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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 35301. Отображено 100.
02-02-2012 дата публикации

Apparatus and method for low voltage radio transmission

Номер: US20120028591A1
Автор: Antonio Montalvo
Принадлежит: Analog Devices Inc

Apparatus and methods are disclosed related to low-voltage radio transmitters with high spectral purity. One such apparatus includes a baseband path with a predistortion stage, a programmable filter, and an upconverter core. In an embodiment, the programmable filter is placed between the predistortion stage and the upconverter core. In an embodiment, the programmable filter is configured by a controller to reject out-of-band noise introduced at the predistortion stage or earlier.

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Номер записи: 1
15-03-2012 дата публикации

Data management device and recording medium

Номер: US20120062764A1
Автор: Akira Shinozawa, Shusaku Nagasaki, Yoshiyuki Imai
Принадлежит: Fujitsu Ltd

A data management device includes an input controller which accepts an input of a data acquisition instruction in a state in which a folder image relating to a folder in which data is to be stored is displayed on a display unit, a data acquisition controller which acquires data from a data acquisition unit in accordance with the data acquisition instruction accepted by the input controller and a data management unit which stores the data acquired by the data acquisition unit in a data storage unit with associating the acquired data with a folder specified by the folder image displayed on the display unit when the data acquisition instruction is accepted.

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Номер записи: 2
12-04-2012 дата публикации

Wireless transceiver with amplifier bias adjusted based on modulation scheme and transmit power feedback

Номер: US20120088510A1
Автор: Fraidun Akhi, Vusthla Sunil Reddy
Принадлежит: Apple Inc

An electronic device may contain a transceiver that transmits and receives radio-frequency signals through antenna structures. Power amplifier circuitry may amplify the radio-frequency signals that are being transmitted. An adjustable voltage supply may supply an adjustable power amplifier bias voltage to the power amplifier circuitry. The power amplifier circuitry may include multiple power amplifiers each of which may handle signals transmitted using a different cellular telephone standard. For each cellular telephone standard, multiple modulation schemes may be supported. A power detector may provide real time measurements of output power. Control circuitry can adjust the transceiver circuitry based on the measurements of output power and can adjust the adjustable power amplifier bias voltage in real time to select an optimum power amplifier bias voltage based on the current cellular telephone standard, modulation scheme, power amplifier gain state, and operating frequency in use.

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Номер записи: 3
28-06-2012 дата публикации

Cross-read resolution method for use in a radio frequency identification system

Номер: US20120161930A1
Автор: Nilan Solanki, Panchapakesan V. Subramanian, Robert C. Arneson
Принадлежит: Symbol Technologies LLC

A radio frequency identification system comprises a tag, a back-end system, and a plurality of readers, each reader having at least one antenna coupled thereto. In a cross-read resolution method performed by a first reader, the first reader receives a first tag read of the tag having a tag identifier. The first reader determines a first metric for the first tag read, and transmits the first metric and the tag identifier to a second reader. The first reader receives a second metric and the tag identifier from the second reader, wherein the second metric is determined by the second reader based on a second tag read of the tag by the second reader. The first reader executes an algorithm, based at least in part, on the first metric and the second metric, to determine whether the first reader will report the tag identifier to the back-end system.

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Номер записи: 4
28-06-2012 дата публикации

Encoded Micro Pattern

Номер: US20120162145A1
Автор: Brian L. Hastings, David C. Rohn, David D. Bohn, Derek Leslie Knee, Justin E. Forrester, Randall T. Crane
Принадлежит: Microsoft Corp

In embodiments, an encoded micro pattern includes segments of encoded bits that can be optically-imaged by a digitizer. The position of each segment in the encoded micro pattern can be determined from the encoded bits in a segment. Each of the segments of the encoded micro pattern also includes a fiducial marker that indicates an orientation of a segment in the encoded pattern. The encoded bits of the encoded micro pattern can be integrated into a display surface of a display device, or integrated in a display screen that is positioned over the display surface of a display device.

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Номер записи: 5
05-07-2012 дата публикации

Communication method and apparatus for phone having voice recognition function

Номер: US20120173233A1
Автор: Joung-Min Seo
Принадлежит: Individual

A method and apparatus for communicating through a phone having a voice recognition function are provided. The method of performing communication using a phone having a voice recognition function includes converting to an incoming call notification and voice recognition mode when a phone call is received; converting to a communication connection and speakerphone mode when voice information related to a communication connection instruction is recognized; performing communication using a speakerphone; and ending communication when voice information related to a communication end instruction is recognized during communication using the speakerphone. Therefore, when a phone call is received, a mode of a phone is converted to a speakerphone mode with a voice instruction using a voice recognition function, and thus communication can be performed without using a hand.

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Номер записи: 6
16-08-2012 дата публикации

System for enhanced barcode decoding and image recognition and method therefor

Номер: US20120205436A1
Автор: Andrew Thomas Bolton, Edmund Michael DelGUERCIO, Edward B. Jordan, Glen Thomas, Joshua Tyler Inman, Scott Michael Palconer
Принадлежит: Augme Technologies Inc

A system for enhanced barcode decoding and image recognition and method therefor. Target image data and ancillary image data are received at a server from a client device. Using the target image data and the ancillary image data, enhancement parameters are chosen to augmenting and/or enhanced the target image data. A code database is queried using the augmented/enhanced image data to identify codes that that match the target image. When multiple possible matching codes are returned in response to the query, a trending pattern associated with at least one of the target image data and the ancillary image is identified and is used to select the most probable match from the multiple possible matches.

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Номер записи: 7
23-08-2012 дата публикации

Metering infrastructure smart cards

Номер: US20120211554A1
Автор: Jesus Acosta-Cazaubon
Принадлежит: General Electric Co

A metering infrastructure having smart devices that utilize smart cards. An infrastructure having a plurality of smart devices is disclosed wherein each smart device is adapted to be controlled by a removable smart card, and wherein each removable smart card includes a computational platform capable of storing and executing program code and a set of application programs capable of being executed on the computational platform, wherein each of the set of application programs is implemented to control an aspect of an associated smart device into which the removable smart card is inserted.

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Номер записи: 8
08-11-2012 дата публикации

Transceiver Arrangement and Method for Processing a Signal

Номер: US20120282867A1
Автор: Zdravko Boos
Принадлежит: Intel Mobile Communications GmbH

A transceiver arrangement includes a first receive path including a first connection and a first receive amplifier, and a second receive path including a second connection, a second receive amplifier, and a frequency conversion device. The transceiver also includes a controllable coupling device configured to couple an output of the first receive amplifier to an input of the frequency conversion device on the second signal path, and a control circuit configured to provide a control signal to the coupling device for selectively combining signals delivered by the first and second receive amplifiers in the correct phase based on a parameter which is derived from a signal present at the first connection or second connection, or both. The parameter derived from the received signal represents whether a signal strength of the received signal or a signal quality of the received signal exceeds a first predetermined threshold.

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Номер записи: 9
22-11-2012 дата публикации

Compact wide dynamic range transmitter for point to point radio

Номер: US20120295561A1
Автор: David C. Schafer, James Laudolff, Thanh H. Nguyen, Todd Nichols, Travis Mashburn, YING Shen
Принадлежит: Aviat US Inc

A radio frequency transmitter comprising a modem which receives one or more input data signals and an adaptive predistortion signal and provides a baseband in-phase signal and a baseband quadrature signal. The transmitter may comprise a power amplifier module which receives the in-phase and quadrature phase signals and provides a radio frequency output signal. A predistortion module receives the radio frequency signal, downconverts the radio frequency signal to an intermediate frequency signal, and downconverts the intermediate frequency signal to a baseband feedback signal. The transmitter samples the feedback signal and provides an adaptive predistortion signal to the modem.

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Номер записи: 10
27-12-2012 дата публикации

Method, terminal, server, and system for providing a service

Номер: US20120326848A1
Автор: Sang-Bum Lee
Принадлежит: KT Corp

A method, terminal, server, and a system for providing a service are provided. In a method of providing a plurality of applications pursuant to identifying a tag by a user terminal, the user terminal identifies the tag to obtain tag information and transmits a request for a service to a service providing server, which then obtains a plurality of application identification information corresponding to the tag information and generates and provides to the user terminal an applications list corresponding to the plurality of application identification information.

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Номер записи: 11
10-01-2013 дата публикации

Mobile wireless communications device with reduced harmonics resulting from metal shield coupling

Номер: US20130012261A1
Автор: George Mankaruse, Lizhong Zhu, Michael Corrigan
Принадлежит: Research in Motion Ltd

A mobile wireless communications device includes a housing, antenna, and circuit board carried by the housing and having radio frequency (RF) circuitry operative with the antenna for receiving and transmitting RF signals through the antenna. A power amplifier is connected within a transmission line for amplifying RF signals to be transmitted over the transmission line to the antenna. An antenna switch is connected to the antenna and RF circuitry. An RF shield surrounds the power amplifier and antenna switch and isolates the power amplifier and antenna switch from the antenna and RF circuitry. A low pass filter is connected to the power amplifier and antenna switch for reducing any RF coupling of voltage standing waves of upper harmonic frequencies from the power amplifier into the antenna switch through the RF shield while maintaining transmission of signals through the transmission line at a desired fundamental frequency.

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Номер записи: 12
14-02-2013 дата публикации

Card key

Номер: US20130039024A1
Автор: Keiichi Sugimoto, Mitsuru Nakagawa
Принадлежит: Denso Corp

A card key has a molded body and an upper and a lower housings. The molded body has a circuit board, to which electronic parts for communicating with an in-vehicle equipment are mounted and which is covered with resin. The molded body is formed in a plate shape. The upper and the lower housings are fixed to each other so that the molded body is arranged between them. An external appearance of the card key is defined by the upper and the lower housings.

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Номер записи: 13
21-02-2013 дата публикации

Alerting a smart card reader of probable wireless communication

Номер: US20130045691A2
Автор: Herbert Little, Neil Adams
Принадлежит: Research in Motion Ltd

A wireless device may alert a wireless smart card reader that communication of data between the wireless device and the wireless smart card reader is probably imminent by sending an activation alert. Upon receipt of the activation alert, if the wireless smart card reader is in a low-power state, the wireless smart card reader may enter a higher-power state. If the wireless smart card reader is in the higher-power state upon receipt of the activation alert, the wireless smart card reader may remain in the higher-power state until a timeout period has expired. The wireless device may instruct the wireless smart card reader to enter the low-power state by sending a deactivation alert if the wireless device detects that communication of data between the wireless device and the wireless smart card reader is not likely to occur within a specified period of time.

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Номер записи: 14
21-02-2013 дата публикации

Mobile terminal and operation control method thereof

Номер: US20130047060A1
Автор: Chungha Yun, Eunyoung Moon, Joonho Kwon
Принадлежит: LG ELECTRONICS INC

Embodiments discussed herein relate to a mobile terminal providing a user interface capable of more conveniently searching a user's visited web pages. To this end, a mobile terminal according to an embodiment discussed herein may include a storage unit configured to store link information between a first web page and a second web page when the second web page is approached from the first web page; a display unit configured to display a first indicator indicating the first web page and a second indicator indicating the second web page together with the link information; and a controller configured to control the display unit to display a web page corresponding to the selected indicator when either one of the first indicator and second indicator is selected.

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Номер записи: 15
07-03-2013 дата публикации

Terminal and method for executing function using human body communication

Номер: US20130057415A1
Автор: Hee Chan Choi, Hyung Tae Kim
Принадлежит: SAMSUNG ELECTRONICS CO LTD

Methods and apparatus for human body communication are provided. A communication signal for transmission through the human body is generated. The communication signal is transmitted when the terminal is in contact with the human body. The touch is detected, and a communication signal is determined based on a number of the touch and a duration of the touch. A function corresponding to the communication signal is executed.

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Номер записи: 16
07-03-2013 дата публикации

Radio-Frequency Power Amplifier Circuitry with Power Supply Voltage Optimization Capabilities

Номер: US20130059546A1
Автор: Nicholas W. Lum, Ronald W. Dimpflmaier, William J. Noellert
Принадлежит: Apple Inc

Electronic devices with wireless communications capabilities are provided. The electronic device may include storage and processing circuitry, power amplifier circuitry, power supply circuitry, etc. The storage and processing circuitry may direct the power amplifier circuitry to operate using a desired power mode, in allocated resource blocks within a particular frequency channel, and at a given output power level. The power supply circuitry may bias the power amplifier circuitry with a power supply voltage. The electronic device may be subject to in-band emissions requirements and adjacent channel leakage requirements that restrict the power levels produced by the device on frequencies that are not allocated to the device. The electronic device may optimize the power amplifier supply voltage based on allocated resource blocks by minimizing the supply voltage to reduce power consumption while ensuring that emissions requirements are satisfied.

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Номер записи: 17
14-03-2013 дата публикации

Mobile device for multi-channel sound collection and output using common connector, and driving method thereof

Номер: US20130064381A1
Автор: Hyo-Sun JANG, Ju-Hee CHANG, Sung-Hoon Jeong
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A mobile device for providing multi-channel sound collection and output using a common connector, and a driving method thereof are provided. A mobile device having a sound compressor and a sound decompressor includes a connector slidably receiving a sound collector plug or a sound output plug, a plug identification unit for, if one of the sound collector plug and the sound output plug is coupled to the connector, identifying if the plug coupled to the connector is the sound collector plug or is the sound output plug, a switching unit for electrically coupling the plug coupled to the connector, to the sound compressor, or electrically coupling the plug coupled to the connector, to the sound decompressor, and a controller for controlling switching of the switching unit according to the identification outcome.

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Номер записи: 18
04-04-2013 дата публикации

TRANSMITTING DEVICE AND METHOD FOR TRANSMITTING SIGNALS IN A WIRELESS COMMUNICATION SYSTEM, RECEIVING DEVICE AND METHOD FOR RECEIVING SIGNALS IN A WIRELESS COMMUNICATION SYSTEM

Номер: US20130084815A1
Автор: STIRLING-GALLACHER Richard, WANG Zhaocheng
Принадлежит: Sony Deutschland GmbH

A transmitting device for transmitting signals carrying data in a wireless communication system, including at least two beam antennas, each beam antenna having a main beaming direction at a different angle; a generator configured to generate a number of signal streams to be transmitted over a wireless communication channel within the wireless communication system, wherein each of the signal streams includes a different version of the data and the number of signal streams corresponds to the number of the at least two beam antennas, wherein each signal stream is transmitted over the wireless communication channel via a different beam antenna of the at least two beam antennas; and a cyclic delay diversity unit configured to cyclically shift each different version of data and to use cyclic delay diversity. 1. A transmitting device for transmitting signals carrying data in a wireless communication system , comprising:at least two beam antennas, each beam antenna having a main beaming direction at a different angle;a generator configured to generate a number of signal streams to be transmitted over a wireless communication channel within the wireless communication system, wherein each of the signal streams includes a different version of the data and said number of signal streams corresponds to the number of said at least two beam antennas, wherein each signal stream is transmitted over the wireless communication channel via a different beam antenna of the at least two beam antennas; anda cyclic delay diversity unit configured to cyclically shift each different version of data and to use cyclic delay diversity.2. A transmitting device for transmitting signals carrying data in a wireless communication system , comprising:at least two beam antennas, each beam antenna having a main beaming direction at a different angle;a generator configured to generate a number of signal streams to be transmitted over a wireless communication channel within the wireless communication ...

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Номер записи: 19
11-04-2013 дата публикации

LOW COMPLEXITY MAXIMUM LIKELIHOOD DETECTION OF CONCATENATED SPACE CODES FOR WIRELESS APPLICATIONS

Номер: US20130089162A1
Автор: Alamouti Siavash, Poon Patrick, Tarokh Vahid
Принадлежит:

Good transmission characteristics are achieved in the presence of fading with a transmitter that employs a trellis coder followed by a block coder. Correspondingly, the receiver comprises a Viterbi decoder followed by a block decoder. Advantageously, the block coder and decoder employ time-space diversity coding which, illustratively, employs two transmitter antennas and one receiver antenna. 1. An apparatus comprising:a trellis encoder that generates a first symbol and a second symbol; anda block encoder coupled to receive the first and second symbol and generate a block of symbols, the block of symbols including the first symbol, the second symbol, a complex conjugate of the first symbol and a negative complex conjugate of the second symbol; andwherein the complex conjugate of the first symbol and the first symbol are coupled to be transmitted over different ones of a first and a second antenna and the second symbol and the negative complex conjugate of the second symbol are coupled to be transmitted over different ones of the first and the second antenna.2. The apparatus as recited in further comprising the first and second antennas.3. The apparatus as recited in wherein the first and second symbols are transmitted during a first time interval over different ones of the first and second antennas and the complex conjugate of the first symbol and the negative complex conjugate of the second symbol are transmitted during a second time interval over different ones of the first and second antennas.4. A method comprising:trellis encoding received data to generate a first symbol and a second symbol;block encoding the first and second symbols to generate a block of symbols that includes the first and second symbols, a negative complex conjugate of the second symbol, and a complex conjugate of the first symbol; andsupplying the block of symbols for transmission over a plurality of antennas.5. The method as recited in wherein the plurality of antennas comprises a first and ...

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Номер записи: 20
18-04-2013 дата публикации

POWER-SAVING RECEIVER CIRCUITS, SYSTEMS AND PROCESSES

Номер: US20130093496A1
Автор: RAGHUPATHY Arun, Ramasubramanian Karthik, WATERS Deric Wayne
Принадлежит: TEXAS INSTRUMENTS INCORPORATED

An electronic circuit includes a receiver circuit (BSP) operable to perform coherent summations having a coherent summations time interval, and a power control circuit () coupled to said receiver circuit (BSP) and operable to impress a power controlling duty cycle (T, T) on the receiver circuit (BSP) inside the coherent summations time interval. Other circuits, devices, systems, methods of operation and processes of manufacture are also disclosed. 1. A power management circuit for controlling a process having a maximum available interval for coherent summations , the power management circuit comprisinga power gating circuit operable to turn power on and off to at least one portion of the process; anda control circuit operable to establish a rate of turning the power on and off by said power gating circuit so that the rate equals or exceeds the reciprocal of the maximum available interval for coherent summations.2. The power management circuit claimed in wherein said power gating circuit is configurable and said control circuit is operable to configure said power gating circuit.3. The power management circuit claimed in wherein power is gated by at least part of said power gating circuit to said control circuit itself.4. The power management circuit claimed in wherein said control circuit is further operable to establish an on-time interval for said power gating circuit at the established rate.5. The power management circuit claimed in further comprising a voltage supply circuit operable to regulate power to said power gating circuit.6. The power management circuit claimed in wherein said control circuit has an input for at least one signal representing signal-to-noise ratio.7. The power management circuit claimed in wherein said control circuit has an input for at least one signal representing user application information.8. The power management circuit claimed in wherein said control circuit has an input for at least one signal representing Doppler difference.9. ...

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Номер записи: 21
18-04-2013 дата публикации

Anti-collision system and method for reducing the collision of data transmitted by rfid tags

Номер: US20130093571A1
Автор: Jongho Park, Tae Jin Lee
Принадлежит: Sungkyunkwan University Research and Business Foundation

Provided are an anti-collision system and method which address the mobility of radio frequency identification (RFID) tags. An RFID reader may transmit an identification start command to identify a plurality of RFID tags in an identification area of the RFID reader. The RFID tags compare the number of collisions of each RFID tag receiving the identification start command with a collision threshold C th and attempt to be identified in a binary tree section of a frame or in a framed slotted ALOHA (FSA) section of the frame based on the comparison.

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Номер записи: 22
18-04-2013 дата публикации

TRANSPONDER WITH RECEIVING MEANS HAVING A LOW ELECTRICAL CONSUMPTION IN A LISTENING MODE

Номер: US20130095780A1
Автор: Fehle Jürgen, Prazan Michal, Prokes Michal
Принадлежит: EM MICROELECTRONIC-MARIN SA

The transponder comprises an antenna and a receiver circuit () for receiving RF signals, this receiver circuit is implemented with a control mechanism to activate it at least periodically in a listening mode. This receiver circuit is comprises a decoding circuit (), formed at least by a demodulator () and a decoder (), and a wake-up circuit (B) to analyze received RF signals in the listening mode and arranged for controlling the activation of the decoding circuit in this listening mode. The wake-up circuit comprises a frequency discriminator () and a digital modulation or preamble detector () downstream from a field clock generator (). The wake-up circuit receives as entry an alternating signal branched from the signal chain through the receiver circuit upstream from the demodulator and it activates the decoding circuit only when a modulation or a preamble is detected in a received RF signal by the digital modulation or preamble detector. 1. A transponder comprising an antenna and a receiver circuit for receiving Amplitude Modulated RF signals (AM-RF signals) , this receiver circuit comprising a wake-up circuit and further at least a demodulator , the receiver circuit being associated to a control mechanism of the transponder activating this receiver circuit at least periodically in a listening mode in which the wake-up circuit analyzes received RF signals and controls the activation of at least the demodulator in function of these received RF signals , wherein this wake-up circuit receives as entry an alternating signal branched from the signal chain through the receiver circuit upstream from said demodulator and having the carrier frequency of the received RF signals , wherein the wake-up circuit comprises a frequency discriminator arranged for detecting if said carrier frequency is within a given frequency range , wherein the wake-up circuit further comprises a field clock generator and a digital modulation or preamble detector downstream from this field clock ...

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Номер записи: 23
25-04-2013 дата публикации

Bar-code Assignment System for Medical & Other Uses

Номер: US20130098983A1
Автор: Robert A. Neff
Принадлежит: Siemens Medical Solutions USA Inc

A bar code generation and processing system for medical and other use comprises at least one repository and a bar code processor. The at least one repository of information includes, identification data of multiple bar code scanners and also associates a bar code displayed in an image associated with an executable application and presented on a device with, the executable application and at least one of, (a) the device and (b) a data destination associated with the application. The bar code processor receives identification data of a bar code scanner and data representing the bar code displayed in the image and uses the information in associating the bar code with the data destination associated with the application and a particular bar code scanner of the multiple bar code scanners. The bar code processor communicates data acquired using the particular bar code scanner to the data destination in response to the association.

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Номер записи: 24
25-04-2013 дата публикации

SEMICONDUCTOR DEVICE

Номер: US20130100999A1
Автор: Akamine Yukinori, FURUTA Yoshikazu, Hori Kazuaki
Принадлежит: RENESAS ELECTRONICS CORPORATION

In a transmission portion of a semiconductor device, a first amplification portion receives a digital baseband signal and amplifies the signal with a first gain through digital processing. A digital-to-analog conversion portion converts the digital baseband signal amplified by the first amplification portion into an analog baseband signal. A modulation portion generates a transmission signal by modulating a local oscillation signal with the analog baseband signal. A second amplification portion amplifies the transmission signal with a variable second gain. A control unit receives information representing a transmission mode and adjusts the first gain in accordance with the transmission mode. 1. A semiconductor device capable of transmitting data in accordance with each of a plurality of transmission modes , comprising:a first amplification portion receiving a first digital baseband signal and generating a second digital baseband signal by amplifying said first digital baseband signal with a first gain, the first gain being variable;a digital-to-analog conversion portion for converting said second digital baseband signal generated by said first amplification portion into an analog baseband signal;a modulation portion for generating a transmission signal by modulating a local oscillation signal with said analog baseband signal;a second amplification portion for amplifying said transmission signal with a variable second gain; anda control unit receiving information representing any of said plurality of transmission modes and adjusting said first gain in accordance with said information.2. The semiconductor device according to claim 1 , whereinsaid control unit further adjusts said second gain in accordance with said information.3. The semiconductor device according to claim 2 , whereinsaid control unit adjusts said first and second gains such that a minimum amount of change in said first gain is less than a minimum amount of change in said second gain.4. The ...

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Номер записи: 25
25-04-2013 дата публикации

METHOD AND DEVICE FOR SENDING/RECEIVING ELECTROMAGNETIC SIGNALS RECEIVED/SENT ON ONE OR MORE FIRST FREQUENCY BANDS

Номер: US20130101299A1
Автор: Bellot Laurent, Blanc stéphane, Boukour Tariq, El Sayed Jawad, Plumecoq Jean-Christophe
Принадлежит: E-Blink

In order to send electromagnetic signals received on one or more first frequency bands, the method applies a transformation to the signals, by performing the following actions: selecting first frequency subbands, forming a first set of frequency subbands of the first frequency band(s); using organization rules to associate one or more second sets of frequency subbands, forming one or more second frequency bands, with each first frequency subband of the first set; and using optimization rules to determine frequency translations to transpose the signals received in the first frequency subbands into signals sent in the second frequency band(s). 1. A method for transmitting electromagnetic signals received in one or more first frequency bands , comprising:selecting first frequency sub-bands as a first set of frequency sub-bands of the first frequency band(s);in accordance with organizational rules, associating with each first frequency sub-band of the first set, one or more second sets of frequency sub-bands of one or more second frequency bands; anddetermining, for each first frequency sub-band selected, frequency translations for transposing the signals received in the first frequency sub-bands to signals transmitted in the second frequency band(s) in order to defragment the first frequency set in the second frequency band(s) by reducing width of the second frequency band.2. The method according to claim 1 , including selecting only the first frequency sub-bands in which electromagnetic signals considered wanted are received.3. The method according to claim 1 , wherein the organizational rules include rules of associating a second frequency sub-band with a segment covering all or part of a first frequency sub-band.4. The method according to claim 1 , wherein the optimization rules include rules for building a second set of frequency sub-bands adjacent to at least one other frequency sub-band of the set.5. The method according to claim 1 , used in a cellular ...

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Номер записи: 26
02-05-2013 дата публикации

Antenna Tuning Using the Ratio of Complex Forward and Reflected Signals

Номер: US20130107914A1
Автор: DAKSHINAMURTHY Sriraman, Fujimoto William, Lorenz Robert, Park Bongseok
Принадлежит:

Embodiments operate to reduce impedance mismatch between the PA and the antenna in a transceiver, thereby reducing the VSWR at the PA output and improving both the delivered power to the antenna and receiver sensitivity. In embodiments, an antenna tuner is placed between the PA and the antenna. The antenna tuner includes programmable components that can be tuned in order to effect an impedance translation between the antenna and the PA output, thereby reducing reflections seen by the PA. In an embodiment, the antenna tuner is adapted dynamically based on changes in the impedance of the antenna. Accordingly, the PA is operated very close to its optimal load impedance. In another embodiment, the antenna tuner is controlled based on measurement of the voltage reflection coefficient S 1. A method for controlling an antenna tuner coupled between a power amplifier (PA) and an antenna in a wireless device , comprising:measuring forward and reflected signal components at an output of the PA, wherein the forward and reflected signal components result from applying an input signal to a transmit path of the wireless device;generating amplitude and phase information from each of the measured forward and reflected signal components;estimating a voltage reflection coefficient using the generated amplitude and phase information; andadjusting the antenna tuner based on the voltage reflection coefficient to reduce an impedance mismatch between the PA and the antenna.2. The method of claim 1 , wherein measuring the forward and reflected signal components comprises selectively controlling a directional coupler coupled to the output of the PA.3. The method of claim 1 , wherein generating the amplitude and phase information from each of the measured forward and reflected signal components comprises separately down-converting and digitizing the forward and reflected signal components to generate respectively forward digital baseband in-phase (I) and quadrature (Q) signals and reflected ...

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Номер записи: 27
02-05-2013 дата публикации

CONTACTLESS SIGNAL SPLICING

Номер: US20130109303A1
Автор: Kyles Ian A., McCormack Gary D.
Принадлежит: WAVECONNEX, INC.

A first electronic device may include a first electronic circuit and a second electronic circuit is provided. The first electronic device may include an internal communication link providing a signal path for conducting communication signals between the first electronic circuit and the second electronic circuit. An interface circuit may be operatively coupled to the internal communication link. The interface circuit may include an extremely high frequency (EHF) communications circuit configured to receive an EHF electromagnetic signal from another EHF communications circuit of a second electronic device. This EHF electromagnetic signal may enable the second electronic device to control or monitor the first electronic device. 1. An electronic device comprising:a first electronic circuit;a second electronic circuit;an internal communication link providing a signal path for conducting communication signals between the first electronic circuit and the second electronic circuit; andan interface circuit operatively coupled to the internal communication link and including an extremely high frequency (EHF) communications circuit configured to receive an EHF electromagnetic signal from an external device and generate from the received EHF electromagnetic signal a receive communication signal, the interface circuit selectively applying the receive communication signal to the internal communication link.2. The electronic device according to further comprising a second EHF communications circuit configured to generate an EHF electromagnetic signal from an internal communication signal conducted on the internal communication link claim 1 , and transmit the generated EHF electromagnetic signal to the external device.3. The electronic device according to claim 2 , wherein the transmitter is configured to transmit a modulated EHF signal representing communication signals between the first electronic circuit and the second electronic circuit.4. The electronic device according to ...

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Номер записи: 28
02-05-2013 дата публикации

Methods and Systems for Pre-Emphasis of an Envelope Tracking Power Amplifier Supply Voltage

Номер: US20130109442A1
Автор: DAKSHINAMURTHY Sriraman, Lorenz Robert
Принадлежит:

Embodiments provide systems and methods for producing an envelope tracking (ET) PA supply voltage with minimum headroom relative to the desired RF output signal of the PA. In an embodiment, the PA supply voltage is generated by applying an ET signal to an ET path of the wireless device, and by further applying pre-emphasis to the ET signal to compensate for a frequency response of the ET path. Embodiments operate by estimating the frequency response of the ET path and determining the pre-emphasis based on the estimate of the frequency response of the ET path. In embodiments, the pre-emphasis is applied using a pre-emphasis filter, which may be within or outside of the ET path. Further, the pre-emphasis may be applied to the ET signal in digital or analog form. 1. A method for controlling a power amplifier (PA) in a wireless device , comprising:generating an envelope tracking (ET) signal based on an envelope of a complex transmit signal;applying the ET signal to an ET path of the wireless device to generate a supply voltage signal;applying pre-emphasis to the ET signal, wherein the pre-emphasis compensates for a frequency response of the ET path of the wireless device; andproviding the supply voltage signal to the PA.2. The method of claim 1 , wherein generating the ET signal comprises computing a magnitude of the complex transmit signal and compensating the computed magnitude.3. The method of claim 1 , wherein applying the ET signal to the ET path of the wireless device comprises up-sampling the ET signal to reduce digital-to-analog converter (DAC) produced images of the ET signal.4. The method of claim 1 , wherein applying the ET signal to the ET path of the wireless device comprises applying the ET signal to a power supply that produces the supply voltage signal.5. The method of claim 1 , further comprising:(a) applying tone samples of a pre-determined frequency to the ET path;(b) sampling the supply voltage signal, resulting from the applied tone samples, to ...

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Номер записи: 29
09-05-2013 дата публикации

Lightweight electronic system for automotive applications and method

Номер: US20130114234A1
Автор: Chris R. Snider, Mark A. Jackson
Принадлежит: Delphi Technologies Inc

A lightweight audio player for vehicular application is virtually “fastenerless” and includes a fold-up case formed of polymer based material molded to provide details to accept audio devices, as well as the circuit boards required for electrical control and display. The case is of composite structure, including an insert molded electrically conductive wire mesh screen. The wire mesh provides shielding and grounding of the circuit boards via exposed wire mesh pads and adjacent ground clips. Side wall closure members define self-engaging attachment features for affixing to the case, providing electrical self-grounding with the wire screen and thermal grounding with internal power devices. The major components and subassemblies are self-fixturing during the final assembly process, eliminating the need for dedicated tools, fixtures and assembly equipment.

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Номер записи: 30
09-05-2013 дата публикации

CREST FACTOR REDUCTION (CFR) USING ASYMMETRICAL PULSES

Номер: US20130114652A1
Автор: Azadet Kameran, Li Chengzhou, Molina Albert
Принадлежит: LSI Corporation

Crest factor reduction (CFR) techniques are provided using asymmetrical pulses. A crest factor reduction method comprises obtaining one or more data samples; detecting at least one peak in the one or more data samples; performing peak cancellation on the at least one detected peak by applying an asymmetric cancellation pulse to the at least one detected peak: and providing processed versions of the one or more data samples. The asymmetric cancellation pulse is generated, for example, by a minimum phase filter and has a substantially minimum group delay. New peaks associated with peak re-growth are introduced substantially only to the one side of the asymmetric cancellation pulse. The process can optionally rewind by an amount greater than or substantially equal to a group delay of the asymmetric cancellation pulse to address the limited number of pre-cursors that may be present in the asymmetric cancellation pulse. 1. A crest factor reduction method , comprising:obtaining one or more data samples;detecting at least one peak in said one or more data samples;performing peak cancellation on said at least one detected peak by applying an asymmetric cancellation pulse to said at least one detected peak; andproviding processed versions of said one or more data samples.2. The method of claim 1 , wherein said asymmetric cancellation pulse is generated by a minimum phase filter and has a substantially minimum group delay.3. The method of claim 1 , wherein said asymmetric cancellation pulse comprises side taps substantially only to one side of a center tap of the asymmetric cancellation pulse claim 1 , wherein said one side is in a direction said one or more samples are processed.4. The method of claim 3 , wherein said asymmetric cancellation pulse introduces new peaks associated with peak re-growth substantially only to said one side of said asymmetric cancellation pulse.5. The method of claim 1 , further comprising the step of rewinding said method by an amount greater than ...

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Номер записи: 31
09-05-2013 дата публикации

MULTI-STAGE CREST FACTOR REDUCTION (CFR) FOR MULTI-CHANNEL MULTI-STANDARD RADIO

Номер: US20130114761A1
Автор: Azadet Kameran, Molina Albert
Принадлежит: LSI Corporation

Multi-stage crest factor reduction (CFR) techniques are provided for multi-channel multi-standard radio (MSR). A multi-stage crest factor reduction method comprises applying one or more data samples associated with at least one channel of a first technology type to a first individual crest factor reduction block; applying one or more data samples associated with at least one channel of a second technology type to a second individual crest factor reduction block; aggregating outputs of the first and second individual crest factor reduction blocks to generate an aggregated output; and applying the aggregated output to a composite crest factor reduction block. The individual crest factor reduction blocks can be implemented using a sampling rate appropriate for the corresponding technology type. The composite crest factor reduction block operates at a higher sampling rate than the individual crest factor reduction blocks. 1. A multi-stage crest factor reduction method , comprising:applying one or more data samples associated with at least one channel of a first technology type to a first individual crest factor reduction block;applying one or more data samples associated with at least one channel of a second technology type to a second individual crest factor reduction block;aggregating outputs of said first and second individual crest factor reduction blocks to generate an aggregated output; andapplying said aggregated output to a composite crest factor reduction block.2. The method of claim 1 , wherein said technology type comprises one or more of Global System for Mobile Communications (GSM) claim 1 , Wideband Code Division Multiple Access (WCDMA) claim 1 , Code Division Multiple Access (CDMA) claim 1 , Worldwide interoperability for Microwave Access (WiMAX) and Long Term Evolution (LTE).3. The method of claim 1 , wherein said individual crest factor reduction blocks are implemented using a sampling rate appropriate for said corresponding technology type.4. The ...

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Номер записи: 32
09-05-2013 дата публикации

RECURSIVE DIGITAL PRE-DISTORTION (DPD)

Номер: US20130114762A1
Автор: Azadet Kameran, Molina Albert
Принадлежит: LSI Corporation

Recursive digital pre-distortion (DPD) techniques are provided. Digital pre-distortion is performed by applying a signal to a recursive system to generate a state vector; providing the state vector as a feedback value to the recursive non-linear system; and applying the state vector to a second function to generate an output signal, wherein at least one of the recursive system and the second function comprise a non-linear function. The recursive non-linear system can be initialized to a known initial value. The recursive system is defined by a system of non-linear differential equations. 1. A digital pre-distortion method , comprising:applying a signal to a recursive system to generate a state vector;providing said state vector as a feedback value to said recursive non-linear system; andapplying said state vector to a second function to generate an output signal, wherein at least one of said recursive system and said second function comprise a non-linear function.2. The method of claim 1 , wherein said recursive system is defined by a system of non-linear differential equations.4. The method of claim 3 , wherein said non-linear functions f and g are determined by a digital pre-distortion parameter estimation phase.5. The method of claim 1 , further comprising the step of initializing said recursive non-linear system.6. The method of claim 1 , wherein said state vector is initialized to a known initial value.7. A digital pre-distortion system claim 1 , comprising:a memory; andat least one hardware device, coupled to the memory, operative to:apply a signal to a recursive system to generate a state vector;provide said state vector as a feedback value to said recursive non-linear system; andapply said state vector to a second function to generate an output signal, wherein at least one of said recursive system and said second function comprise a non-linear function.8. The digital pre-distortion system of claim 7 , wherein said recursive system is defined by a system of ...

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Номер записи: 33
09-05-2013 дата публикации

System and Method for Radio Antenna Sharing in an Information Handling System

Номер: US20130115896A1
Автор: Finn Larry William, Sultenfuss Andrew T., Utz James R.
Принадлежит: DELL PRODUCTS, LP

An information handling system includes a processing system with a radio output, another processing system with a radio output, and a radio selector operable to couple an antenna to a selected one of the radios. A radio selector board includes a radio, a selector switch with an input terminal coupled to the radio, another input terminal coupleable to another radio, a control input coupleable to a control module, and an output coupleable to an antenna. In response to a control signal from the control module, the selector switch connects the first radio to the antenna, and in response to another control signal, the selector switch connects the other radio to the antenna. 1. A method comprising:coupling a first radio associated with a first processing system of an information handling system to a first switch of a radio selector board, wherein the first processing system is operable to control the first radio;coupling a second processing system to a second radio of the radio selector board, wherein the second radio is associated with the second processing system, and wherein the second processing system is operable to control the second radio;coupling the second radio to the first switch;coupling a first antenna to the first switch;in response to operating the first processing system in a first low-power mode, connecting the second radio to the first antenna; andin response to operating the second processing system in a second low-power mode, connecting the first radio to the first antenna.2. The method of claim 1 , further comprising:coupling the first radio to a second switch;coupling the second radio to the second switch;coupling a second antenna to the second switch;in response to operating the first processing system in the first low-power mode, connecting the second radio to the second antenna; andin response to operating the second processing system in a second low-power mode, connecting the first radio to second antenna.3. The method of claim 1 , further ...

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Номер записи: 34
09-05-2013 дата публикации

POWER MANAGEMENT OF RADIO TRANSCEIVER ELEMENTS

Номер: US20130115908A1
Автор: Karaoguz Jeyhan
Принадлежит: BROADCOM CORPORATION

A radio receiver includes a power control module for selectively powering down and powering up radio receiver elements in between known communication periods according to one aspect of the present invention. According to a second aspect of the invention, the radio receiver operates in a low power mode of operation and periodically “sniffs” to determine whether an access point has messages or communication signals to transmit to it. 1. A radio receiver , comprising:a plurality of radio receiver circuit elements; and identifying a receiver inactivity time corresponding to a time period between received RF signals in an established communication link;', 'identifying one or more elements of the plurality of radio receiver circuit elements that can be powered down and back up within the receiver inactivity time to reduce power consumption; and', 'identifying a restoration time for at least one element of the one or more elements, wherein the restoration time is a time at which the at least one element should automatically be powered on in order to achieve an operational mode steady state prior to the expiration of the receiver inactivity time., 'a power control module for2. The radio receiver of claim 1 , wherein the power control module further:powers down the at least one element during the receiver inactivity time; andpowers the at least one element of the radio receiver back to an operational mode based upon the restoration time such that the at least one element reaches a steady state of operation by the expiration of the receiver inactivity time.3. The radio receiver of claim 1 , wherein the power control module determines the receiver inactivity time based upon known and defined communication periods claim 1 , a number of communication beacons claim 1 , or a known amount of time until an allocated time slot in a time divided communication system.4. The radio receiver of claim 1 , wherein the at least one element comprises at least one of an RF front end claim 1 , ...

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Номер записи: 35
09-05-2013 дата публикации

Communications Chip with Multi-Port Distributed Antenna

Номер: US20130116016A1
Автор: Rofougaran Ahmadreza, Rofougaran Maryam
Принадлежит: BROADCOM CORPORATION

Methods and systems for power combining in a multi-port distributed antenna are disclosed and may include power combining signals from power amplifiers (PAs) on a chip. The PAs may be coupled to a single distributed antenna via antenna ports. A phase of each of the signals may be matched at the antenna ports via phase-matching circuitry. A characteristic impedance may be configured at the ports based on a location of the ports. The PAs may be impedance matched to the antenna ports via impedance matching elements. A power level of the power-combined signals may be monitored via a power detector coupled to the distributed antenna. The power detector may include an envelope detector, such as a diode. The antenna may be integrated on the chip or may be located external to the chip. The signals may include RF signals and the antenna may include a microstrip antenna. 120-. (canceled)2127-. (canceled)28. A wireless communications chip comprising:at least one circuit comprising a plurality of power amplifiers, said plurality of power amplifiers being coupled to a microstrip antenna via a plurality of antenna ports;said at least one circuit being operable to produce at least one combined signal from said plurality of power amplifiers.29. The wireless communications chip of claim 28 , wherein said at least one circuit is operable to match a phase of said at least one combined signal.30. The wireless communications chip of claim 28 , wherein said at least one circuit is operable to configure a characteristic impedance at least at one of said plurality of antenna ports.31. The wireless communications chip of claim 28 , wherein said at least one circuit comprises an impedance matching element operable to impedance match at least one of said plurality of power amplifiers to one of said plurality of antenna ports.32. The wireless communications chip of claim 28 , wherein said at least one circuit comprises a power detector coupled to said distributed antenna claim 28 , said power ...

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Номер записи: 36
16-05-2013 дата публикации

Low complexity frequency selective iq mismatch digital rx balancer and tx inverse balancer for non-ideal rf front-end

Номер: US20130121388A1
Автор: Ching-Yih Tseng, Wen-Sheng Cheng
Принадлежит: Acrospeed Inc

A system for reducing a mismatch between an in-phase (I) signal and a quadrature phase (Q) signal is disclosed. The system includes a phase compensation block comprising an infinite impulse response (IIR) filter configured to reduce a first portion of a mismatch between an I signal and a Q signal, wherein the first portion includes frequency selective phase mismatch. The system further includes a gain compensation block comprising a finite impulse response (FIR) filter configured to reduce a second portion of the mismatch, wherein the second portion includes frequency selective gain mismatch. The phase compensation block and the gain compensation block are calibrated at least in part based on a loopback signal, wherein the loopback signal is routed from a transmitting portion of a radio frequency (RF) circuitry back to a receiving portion of the RF circuitry.

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Номер записи: 37
16-05-2013 дата публикации

Apparatus, Methods, Computer Programs and Computer Readable Storage Mediums for Wireless Communications

Номер: US20130122829A1
Автор: Hujanen Arto Tapio, Hyvonen Lassi Pentti Olavi, Krogerus Joonas Veli-Allan, Li Pei, Somersalo Matti Kalevi
Принадлежит: Nokia Corporation

An apparatus including a first port configured to receive signals from a transceiver and to receive a first antenna; a second port configured to receive signals from a transceiver and to receive a second antenna; a first reactive component coupled to the first port; a second reactive component coupled to the first reactive component at a first junction and to the second port, wherein at least the first reactive component is configured to have an impedance that shifts the phase of a first signal, in a second operational resonant frequency band, received from the first antenna, and the second reactive component is configured to have an impedance that shifts the phase of a second signal, in the second operational resonant frequency band, received from the transceiver, so that the first signal and the second signal at least partially destructively interfere with one another at the first junction. 1. An apparatus comprising:a first port configured to receive signals from a transceiver and to receive a first antenna, the first antenna being configured to operate in a first operational resonant frequency band;a second port configured to receive signals from a transceiver and to receive a second antenna, the second antenna being configured to operate in a second operational resonant frequency band;a first reactive component coupled to the first port;a second reactive component coupled to the first reactive component at a first junction and to the second port, wherein at least the first reactive component is configured to have an impedance that shifts the phase of a first signal, in the second operational resonant frequency band, received from the first antenna, and the second reactive component is configured to have an impedance that shifts the phase of a second signal, in the second operational resonant frequency band, received from the transceiver, to cause at least partial destructive interference between the first signal and the second signal at the first junction.2. An ...

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Номер записи: 38
16-05-2013 дата публикации

RADIO FREQUENCY PACKAGE ON PACKAGE CIRCUIT

Номер: US20130122833A1
Автор: Ciccarelli Steven C, Hadjichristos Aristotele, Holenstein Christian, Lane Ryan D, Sahota Gurkanwal Singh, Shah Milind P, Wilding David J
Принадлежит: QUALCOMM INCORPORATED

A radio frequency package on package (PoP) circuit is described. The radio frequency package on package (PoP) circuit includes a first radio frequency package. The first radio frequency package includes radio frequency components. The radio frequency package on package (PoP) circuit also includes a second radio frequency package. The second radio frequency package includes radio frequency components. The first radio frequency package and the second radio frequency package are in a vertical configuration. The radio frequency components on the first radio frequency package are designed to reduce the effects of ground inductance. 1. A radio frequency package on package circuit comprising:a first radio frequency package comprising radio frequency components; anda second radio frequency package comprising radio frequency components, wherein the first radio frequency package and the second radio frequency package are in a vertical configuration, and wherein the radio frequency components on the first radio frequency package are designed to reduce the effects of ground inductance.2. The radio frequency package on package circuit of claim 1 , wherein the first radio frequency package comprises passive radio frequency components.3. The radio frequency package on package circuit of claim 1 , wherein the second radio frequency package comprises active radio frequency components.4. The radio frequency package on package circuit of claim 1 , wherein each of the radio frequency components on the first radio frequency package are passive radio frequency components.5. The radio frequency package on package circuit of claim 1 , wherein each of the radio frequency components on the second radio frequency package are active radio frequency components.6. The radio frequency package on package circuit of claim 1 , wherein the first radio frequency package comprises active radio frequency components.7. The radio frequency package on package circuit of claim 1 , wherein the second radio ...

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Номер записи: 39
23-05-2013 дата публикации

RF Power Transmission, Modulation, and Amplification, Including Direct Cartesian 2-Branch Embodiments

Номер: US20130129019A1
Автор: RAWLINS Gregory S., RAWLINS Michael W., SORRELLS David F.
Принадлежит: PARKERVISION, INC.

Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion. 1. A method of amplification , comprising:receiving a representation of a desired output signal;generating first and second substantially constant envelope signals based on the representation of the desired output signal;phase-shifting the first or the second substantially constant envelope signals;amplifying the first and second substantially constant envelope signals;summing the first and second substantially constant envelope signals to generate an output signal.2. The method of claim 1 , wherein receiving a representation comprises receiving in-phase (I) and quadrature (Q) phase components of a baseband information signal.3. The method of claim 2 , further comprising generating amplitude information based on the received I and Q components of the baseband information signal.4. The method of claim 3 , wherein the first and second substantially constant envelope signals are generated using the amplitude information.5. The method of claim 1 , wherein receiving a representation comprises receiving a magnitude and a phase of the desired output signal.6. The method of claim 1 , further comprising generating a normalized clock signal based on a received clock signal.7. The method of claim 6 , ...

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Номер записи: 40
30-05-2013 дата публикации

RADIO COMMUNICATION SYSTEM

Номер: US20130136206A1
Автор: FURUKAWA Hideto
Принадлежит: FUJITSU LIMITED

A transmission apparatus in a radio communication system which simultaneously uses a plurality of different radio frequencies to transmit signals. The apparatus includes a radio format setting portion, which is provided for each transmission frequency of the plurality of different radio frequencies and separately sets a radio format of transmission signals for each transmission frequency; and a transmitter, which is provided for each transmission frequency of the plurality of different radio frequencies and transmits signals at each of said transmission frequencies. Each radio format setting portion sets a pilot length of the transmission signals separately for each transmission frequency of the plurality of different radio frequencies. 1a radio format setting portion, which is provided for each transmission frequency of the plurality of different radio frequencies and separately sets a radio format of transmission signals for each transmission frequency; anda transmitter, which is provided for each transmission frequency of the plurality of different radio frequencies and transmits signals at each of said transmission frequencies,wherein each radio format setting portion sets a pilot length of the transmission signals separately for each transmission frequency of the plurality of different radio frequencies.. A transmission apparatus in a radio communication system which simultaneously uses a plurality of different radio frequencies to transmit signals, comprising: This application is a Divisional Application of U.S. application Ser. No. 11/819,410, filed on Jun. 27, 2007, now pending, which is a continuation of International Patent Application PCT/JP2005/000057, filed Jan. 6, 2005, the contents of each are herein wholly incorporated by reference.The present invention relates to a radio communication system which uses multiple bands or a plurality of different radio frequencies, and in particular relates to a radio communication system, and a transmission apparatus ...

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Номер записи: 41
30-05-2013 дата публикации

LINEAR FET FEEDBACK AMPLIFIER

Номер: US20130137383A1
Автор: Kobayashi Kevin Wesley
Принадлежит: RF MICRO DEVICES, INC.

A circuit that includes a Darlington transistor pair having an input transistor and an output transistor configured to generate an output signal at an output node in response to an input signal received through the input node is disclosed. The circuit has a resistor-inductor-capacitor (RLC) type frequency bias feedback network communicatively coupled between the output transistor and the input node for providing biasing to the Darlington transistor pair as well as for adjusting at least one characteristic of an amplified version of the input signal that passes through the input transistor and into the frequency bias network. The circuit further includes a feedback coupling network coupled between the output node and the input node for feeding back to the input node a portion of the amplified version of the input signal that passes through the input transistor. 1. A circuit comprising:a Darlington transistor pair having an input transistor and an output transistor configured to generate an output signal at an output node in response to an input signal received through an input node; a bias transistor coupled between a feedback coupling network and a fixed voltage node; and', 'a resistor-inductor-capacitor (RLC) tuning network that is tunable within a range that increases a third order intercept point (IP3) to improve an upper frequency band linearity; and, 'a frequency bias feedback network communicatively coupled between the output transistor and the input node for providing biasing to the Darlington transistor pair as well as for adjusting at least one characteristic of an amplified version of the input signal that passes through the input transistor and into the frequency bias feedback network, wherein the frequency bias feedback network comprisesthe feedback coupling network coupled between the output node and the input node for feeding back to the input node a portion of the amplified version of the input signal that passes through the input transistor.2. The ...

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Номер записи: 42
13-06-2013 дата публикации

RADIO FREQUENCY TRANSCEIVER

Номер: US20130148703A1
Автор: CHOI Kihwa, KIM Ikgon
Принадлежит: SAMSUNG ELECTRONICS CO. LTD.

A radio frequency transceiver which can support various frequency conversion schemes is provided. The radio frequency transmitter includes a first low pass filter, a second low pass filter, a first filter input port connected to an input terminal of the first low pass filter, a second filter input port connected to an input terminal of the second low pass filter, a first filter output port connected to an output terminal of the first low pass filter, a second filter output port connected to an output terminal of the second low pass filter, an I/Q modulator, an I input port connected to an I input terminal of the I/Q modulator, a Q input port connected to a Q input terminal of the I/Q modulator; and a Radio Frequency (RF) output port connected to an output terminal of the I/Q modulator. 1. A radio frequency transmitter comprising:a first low pass filter;a second low pass filter;a first filter input port connected to an input terminal of the first low pass filter;a second filter input port connected to an input terminal of the second low pass filter;a first filter output port connected to an output terminal of the first low pass filter;a second filter output port connected to an output terminal of the second low pass filter;an I/Q modulator;an I input port connected to an I input terminal of the I/Q modulator;a Q input port connected to an Q input terminal of the I/Q modulator; anda Radio Frequency (RF) output port connected to an output terminal of the I/Q modulator.2. The radio frequency transmitter of claim 1 , wherein the radio frequency transmitter is implemented as a chip claim 1 , and the first filter input port claim 1 , the second filter input port claim 1 , the first filter output port claim 1 , the second filter output port claim 1 , the I input port claim 1 , the Q input port claim 1 , and the radio frequency output port are implemented as a pin mounted on the chip.3. The radio frequency transmitter of claim 2 , further comprising an amplifier unit ...

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Номер записи: 43
20-06-2013 дата публикации

SINGLE CHANNEL FULL DUPLEX WIRELESS COMMUNICATION

Номер: US20130155913A1
Автор: Sarca Octavian
Принадлежит: REDLINE COMMUNICATIONS INC.

A single channel full duplex wireless communication system includes a processor, a transmitter, a receiver, a secondary transmission path, a combining element, a primary transmission feedback path and a secondary transmission feedback path. The transmitter transmits a transmission signal via a transmission path. The receiver receives a received signal via a reception path. The transmitter and the receiver utilize one channel to transmit and receive signals. The transmission signal causes self-interference. The processor estimates a first transfer function and feeds the secondary transmission path with the transmission signal adjusted by the first transfer function to reduce the transmission signal leaked to the reception path. The combining element combines the transmission signal with the adjusted secondary transmission path signal to remove the self-interference. The primary transmission feedback path output is modified by a second transfer function. The secondary transmission feedback path output is modified by a third transfer function. 1. A single channel full duplex wireless communication system , comprising:a processor;a transmitter coupled to the processor, the transmitter transmitting a transmission signal via a transmission path;a receiver coupled to the processor, the receiver receiving a received signal via a reception path, wherein the transmitter and the receiver utilize one channel, at the same time, to transmit and receive said transmission and received signals, the transmission signal causing self-interference;a secondary transmission path coupled to the transmitter; andthe processor estimating a first transfer function and feeding the secondary transmission path with the transmission signal adjusted by the first transfer function in such a way that the secondary transmission path signal reduces the transmission signal leaked to the reception path;a combining element coupled to the receiver, the combining element being configured to combine the ...

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Номер записи: 44
20-06-2013 дата публикации

WIRELESS COMMUNICATION APPARATUS AND CONTROL METHOD THEREFOR

Номер: US20130157586A1
Автор: Saito Katsuo
Принадлежит: CANON KABUSHIKI KAISHA

A wireless communication apparatus for performing wireless communication using an antenna selected from a plurality of antennas. A received power detection unit detects received power received by an antenna selected from the plurality of antennas. A reflected power detection unit detects transmitted reflected power of the selected antenna. A switching unit switches an antenna used for communication to another antenna based on a variation of the received power detected by the received power detection unit and an amount of electric power of the reflected power detected by the reflected power detection unit. 1. A wireless communication apparatus for performing wireless communication using an antenna selected from a plurality of antennas comprising:a received power detection unit which detects received power received by an antenna selected from the plurality of antennas;a reflected power detection unit which detects transmitted reflected power of the selected antenna; anda switching unit which switches an antenna used for communication to another antenna based on a variation of the received power detected by the received power detection unit and an amount of electric power of the reflected power detected by the reflected power detection unit.2. The apparatus according to claim 1 , wherein when the variation of the received power detected by the received power detection unit exceeds a first threshold claim 1 , the switching unit switches the antenna used for communication to another antenna.3. The apparatus according to claim 1 , wherein when the reflected power detected by the reflected power detection unit exceeds a second threshold claim 1 , the switching unit switches the antenna used for communication to another antenna.4. The apparatus according to claim 1 , further comprisinga contact detection unit which detects contact of an object at a predetermined position from the selected antenna on a housing of the wireless communication apparatus,wherein when the contact ...

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Номер записи: 45
20-06-2013 дата публикации

TRANSMISSION-RECEPTION DEVICE

Номер: US20130157589A1
Автор: Morita Tadashi, Shirakata Naganori
Принадлежит: Panasonic Corporation

A transmission-reception device includes a radio frequency section that performs a frequency conversion on a signal which is modulated using a single carrier transmission system, a correction coefficient multiplier that multiplies a frequency domain signal by a distortion correction coefficient in the frequency conversion of the radio frequency section to correct a distortion, a first transformer that converts a time domain signal into a frequency domain signal at a time of reception, and converts the frequency domain signal which is distortion-corrected by the correction coefficient multiplier into a time domain signal at a time of transmission, and a second transformer that converts a time domain signal into a frequency domain signal at a time of transmission, and converts the frequency domain signal which is distortion-corrected by the correction coefficient multiplier into a time domain signal at a time of reception. 1. A transmission-reception device , comprising:a radio frequency section that performs a frequency conversion on a signal which is modulated using a single carrier transmission system;a correction coefficient multiplier that multiplies a frequency domain signal by a distortion correction coefficient in the frequency conversion of the radio frequency section to correct a distortion;a first transformer that converts a time domain signal into a frequency domain signal at a time of reception, and converts the frequency domain signal which is distortion-corrected by the correction coefficient multiplier into a time domain signal at a time of transmission; anda second transformer that converts a time domain signal into a frequency domain signal at a time of transmission, and converts the frequency domain signal which is distortion-corrected by the correction coefficient multiplier into a time domain signal at a time of reception.2. The transmission-reception device according to claim 1 , whereinthe first transformer converts a loopback signal from a ...

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Номер записи: 46
20-06-2013 дата публикации

Methods for Reducing Near-Field Radiation and Specific Absorption Rate (SAR) Values in Communications Devices

Номер: US20130157592A1
Автор: Caimi Frank M., Chen Li, JR. Paul A., Kishler Mark W., Montgomery Mark T., Tornatta
Принадлежит: SkyCross, Inc.

A method is provided for reducing near-field radiation and specific absorption rate values in a communications device that includes a multimode antenna structure transmitting and receiving electromagnetic signals and circuitry for processing signals communicated to and from the antenna structure. The method includes adjusting the relative phase between signals fed to neighboring antenna ports of the antenna structure such that a signal fed to the one antenna port has a different phase than a signal fed to the neighboring antenna port to provide antenna pattern control and to increase gain in a selected direction toward a receive point. The method features using a transmit power lower than the transmit power used in a non-pattern control operation of the antenna structure such that the communications device obtains generally equivalent wireless link performance with the receive point using reduced transmit power compared to the non-pattern control operation, thereby reducing the specific absorption rate. 1. A method of reducing near-field radiation and specific absorption rate (SAR) values in a communications device , said communications device including a multimode antenna structure transmitting and receiving electromagnetic signals and circuitry for processing signals communicated to and from the antenna structure , said antenna structure comprising: a plurality of antenna ports operatively coupled to the circuitry; a plurality of antenna elements , each operatively coupled to a different one of the antenna ports; and one or more connecting elements electrically connecting the antenna elements at a location on each antenna element that is spaced apart from an antenna port coupled thereto to form a single radiating structure and such that electrical currents on one antenna element flow to a connected neighboring antenna element and generally bypass the antenna port coupled to the neighboring antenna element , the electrical currents flowing through the one antenna ...

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Номер записи: 47
27-06-2013 дата публикации

Rfid material tracking method and apparatus

Номер: US20130162407A1
Автор: Scott E. Moore
Принадлежит: Round Rock Research LLC

A method and apparatus for tracking items automatically is described. A passive RFID (Radio Frequency IDentification) tag is used with a material tracking system capable of real-time pinpoint location and identification of thousands of items in production and storage areas. Passive RFID tags are attached to the item to be tracked, remote sensing antennas are placed at each remote location to be monitored, interrogators with several antenna inputs are connected to the sensing antennas to multiplex the antenna signals, and a host computer communicates with the interrogators to determine item locations to an exacting measure.

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Номер записи: 48
27-06-2013 дата публикации

Apparatus and method for controlling screen brightness in a mobile terminal

Номер: US20130162611A1
Автор: Eo-Jin LIM, Sung-Hwan Baek
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An apparatus and a method for controlling screen brightness in a mobile terminal are provided. Particularly, an apparatus and a method for providing information regarding a currently set screen brightness degree and simplifying a process for changing a brightness control mode in a mobile terminal are provided. A sensing unit of the terminal determines an amount of ambient light during an automatic brightness control mode that controls the screen brightness, and a screen manager controls the screen brightness according to either a user mode or an automatic mode where the transition from the automatic mode to the user mode is simplified.

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Номер записи: 49
27-06-2013 дата публикации

OUTPUT STAGE FOR WIRELESS TRANSMITTER

Номер: US20130165055A1
Автор: Castello Rinaldo, ROSSI Paolo, Sacchi Enrico
Принадлежит: MARVELL WORLD TRADE LTD

In one embodiment, an apparatus includes a first block configured to decompose an input signal into a positive component and a negative component. The apparatus further includes a second block configured to generate a mixer positive driver component from the positive component and a mixer negative driver component from the negative component and input the mixer positive driver component and the negative driver component into a mixer for a wireless transmitter. 1. An apparatus comprising:a first block configured to decompose an input signal into a positive component and a negative component; anda second block configured to generate a mixer positive driver component from the positive component and a mixer negative driver component from the negative component and input the mixer positive driver component and the negative driver component into a mixer of a wireless transmitter.2. The apparatus of claim 1 , further comprising a buffer including an input to receive the input signal.3. The apparatus of claim 2 , wherein the buffer includes a first input to receive a positive current in the input signal and a second input to receive a negative current in the input signal.4. The apparatus of claim 1 , wherein the first block and the second block include transistors of a first type and a second type.5. The apparatus of claim 4 , wherein the second block comprises:a first output branch including a first transistor of the first type and a second transistor of the second type; anda second output branch including a third transistor of the first type and a fourth transistor of the second type,wherein the first current passes through the first transistor and the third transistor and the second current passes through the second transistor and the fourth transistor.6. The apparatus of claim 5 , wherein:the first output branch is coupled to a first input of the mixer, andthe second output branch is coupled to a second input of the mixer.7. The apparatus of claim 5 , wherein:a gate of ...

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Номер записи: 50
04-07-2013 дата публикации

Micro FM Audio Transmitter

Номер: US20130170526A1
Автор: Yung-Yu LEE
Принадлежит: Individual

A micro FM audio transmitter comprises a base male terminal receiving power and data transmissions from a digital product and providing audio output, a base female terminal receiving external charge and transferring data to said digital product, and a FM signal conversion transmitter receiving audio output from the base male terminal, transferring it into FM signals and transmitting it. Besides, an audio low-pass control circuit, a dual-frequency selection circuit and a power dependent audio switching circuit are installed, so reducing of volume and preventing electromagnetic interference are achieved.

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Номер записи: 51
04-07-2013 дата публикации

System and method of duplex wireless audio link over broadcast channels

Номер: US20130171947A1
Автор: Hangwei GUO, Peiqi XUAN, Yifeng Zhang
Принадлежит: Quintic Holdings USA

A device and method of duplex audio communication over a broadcast channel are disclosed. The device and method disclosed in the present invention use the clear channel technique to automatically select an un-occupied channel for the transmit side and utilizes an identification embedded in a sub-channel to allow the receiver to automatically tune to the channel used by the transmitter. The clear channels may be determined by respective transceivers or determined by a master transceiver.

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Номер записи: 52
11-07-2013 дата публикации

TRANSMITTER, CONTROL METHOD, COMPUTER PROGRAM AND DELTA-SIGMA MODULATOR

Номер: US20130177062A1
Автор: Hayashi Toshio, HORI Shinichi, Nagai Daisuke
Принадлежит: NEC Corporation

In order to improve radio characteristic in a transmitter, there are included a ΔΣ modulation means that ΔΣ modulates a given input signal; and a control means that changes parameters of the ΔΣ modulation means in accordance with a given condition. 1. A transmitter comprising:a Δ-Σ modulation means which performs Δ-Σ modulation of a predetermined input signal; anda control means which changes a parameter of said Δ-Σ modulation means in accordance with a predetermined condition, whereinsaid Δ-Σ modulation means includes an adding means and a quantization means,a signal inputted to said Δ-Σ modulation means is inputted to said adding means,a signal outputted from said quantization means, after a predetermined signal processing, which includes a signal processing provided by said adding means, is fed back to said quantization means, andsaid signal outputted from said quantization means is outputted from said Δ-Σ modulation means.2. The transmitter according to claim 1 , wherein said Δ-Σ modulation means performs Δ-Σ modulation of an orthogonal radio signal generated at a baseband or of an envelope signal extracted from said orthogonal radio signal.3. The transmitter according to claim 1 , wherein said parameters is at least one of a threshold value of a quantization means constituting said Δ-Σ modulation means and an output value of said quantization means.410.-. (canceled)11. The transmitter according to claim 1 , further comprising a multiplication means claim 1 , whereinsaid parameters is a multiplication coefficient of a multiplication means.12. The transmitter according to claim 1 , wherein said predetermined condition is at least one of a transmission signal type of said input signal claim 1 , a back-off request value to an amplification means constituting said transmitter claim 1 , a modulation method of said input signal claim 1 , a magnitude of transmission power measured by said transmitter claim 1 , an ACPR (Adjacent Channel leakage Power Ratio) claim 1 , an ...

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Номер записи: 53
18-07-2013 дата публикации

Method and apparatus for controlling brightness of display in mobile device

Номер: US20130181960A1
Автор: Eelhyoung CHOI, Hyungtaek RYOO, Jinsoo Kim, Seungkoo JEONG
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A method and an apparatus for automatically controlling the brightness of a display unit in a mobile device according to external illuminance are provided. The brightness control method includes measuring a gradient of the mobile device, measuring an external illuminance through at least one of an illuminance sensor and a camera, depending on the measured gradient of the mobile device, and regulating the brightness of the mobile device, based on the measured external illuminance.

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Номер записи: 54
18-07-2013 дата публикации

SCALABLE HIGH-BANDWIDTH CONNECTIVITY

Номер: US20130183903A1
Автор: Kyles Ian A., McCormack Gary D.
Принадлежит:

A scalable, high-bandwidth connectivity architecture for portable storage devices and memory modules may utilize EHF communication link chip packages mounted in various two-dimensional and three-dimensional configurations on planar surfaces such as printed circuit boards. Multiple electromagnetic communication links between devices distributed on major faces of card-like devices may be provided with respectively aligned pairs of communication units on each device. Adjacent communication units on a printed circuit board may transmit or receive electromagnetic radiation having different polarization, such as linear or elliptical polarization. Power and communication between communication devices may both be provided wirelessly. 1. An EHF communication unit comprising a die including a transmitter circuit and a receiver circuit; a first antenna operatively connected to the transmitter circuit; a second antenna operatively connected to the receiver circuit; and dielectric material encapsulating and holding in relative spaced relationship the first antenna , the second antenna , and the die , the first and second antennas transmitting or receiving electromagnetic radiation having different respective polarization characteristics.2. The communication unit of claim 1 , wherein the first and second antennas transmit or receive linearly polarized electromagnetic radiation and a first polarization direction vector of radiation transmitted by the first antenna is oriented orthogonally to a second polarization direction vector of radiation received by the second antenna.3. The communication unit of claim 1 , wherein the first antenna transmits one of right-handed and left-handed polarized electromagnetic radiation claim 1 , and the second antenna receives the other of right-handed and left-handed polarized electromagnetic radiation.4. The communication unit of claim 1 , wherein the die has a length and a width; the first antenna is located at a first port disposed at a point ...

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Номер записи: 55
18-07-2013 дата публикации

Modified switching ripple for envelope tracking system

Номер: US20130183916A1
Автор: Michael R. Kay, Nadim Khlat
Принадлежит: RF Micro Devices Inc

Radio frequency (RF) transmitter circuitry, which includes an RF power amplifier (PA) and an envelope tracking power supply, is disclosed. The RF PA receives and amplifies an RF input signal to provide an RF transmit signal using an envelope power supply signal. The envelope tracking power supply provides the envelope power supply signal, which has switching ripple. Further, the envelope tracking power supply operates in either a normal switching ripple mode or a modified switching ripple mode, such that during the normal switching ripple mode, the envelope power supply signal has normal switching ripple, and during the modified switching ripple mode, the envelope power supply signal has modified switching ripple. When the modified switching ripple is required, the envelope tracking power supply operates in the modified switching ripple mode.

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Номер записи: 56
25-07-2013 дата публикации

IMAGE READING AND WRITING USING A COMPLEX TWO-DIMENSIONAL INTERLACE SCHEME

Номер: US20130188166A1
Автор: Sandstrom Torbjorn
Принадлежит: MICRONIC MYDATA AB

The current invention relates to writing or reading a pattern on a surface, such as in microlithography or inspection of mircrolithographic patterns. In particular, Applicant discloses systems recording or reading images by scanning sparse 2D point arrays or grids across the surface, e.g., multiple optical, electron or particle beams modulated in parallel. The scanning and repeated reading or writing creates a dense pixel or spot grid on the workpiece. The grid may be created by various arrays: arrays of light sources, e.g., laser or LED arrays, by lenslet arrays where each lenslet has its own modulator, by aperture plates for particle beams, or arrays of near-field emitters or mechanical probes. For reading systems, the point grid may be created by a sparse point matrix illumination and/or a detector array where each detector element sees only one spot. The idea behind the use of large arrays is to improve throughput. However, the throughput does not scale with the array size, since above a certain size of arrays, previously known schemes fall into in their own tracks and start repeating the same data over and over again. This application discloses methods to scan workpieces with large arrays while preserving the scaling of throughput proportional to array size, even for very large arrays, in fact essentially without limits. 1. A method of relaying pattern information in pulses between an array of more than 100 by 100 elements to spots on a surface of a workpiece , the method including:moving the array between pulses by a displacement vector that creates a regular distribution of a predetermined number of interstitial spots within a cell on the surface, the cell having corners defined by spots projected from the elements with the array in a first position, with a substantial balancing of the regular distribution of the interstitial spots, having an imbalance of no more than a 3:2 ratio along major and minor axes of distribution.2. The method of claim 1 , wherein ...

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Номер записи: 57
25-07-2013 дата публикации

INTEGRATED CIRCUIT DEVICE, WIRELESS COMMUNICATION UNIT AND METHOD OF MANUFACTURE THEREFOR

Номер: US20130189937A1
Автор: Gauthier Laurent
Принадлежит: Freescale Semiconductor, Inc.

An integrated circuit device comprising at least one radio frequency (RF) transceiver module. The at least one RF transceiver module includes a plurality of low noise amplifiers (LNAs) operably coupled to external contacts of the integrated circuit device and arranged to receive an RF signal from the respective external contact, amplify the received RF signal, and to output the amplified RF signal. Each transceiver module further includes a plurality of power amplifier (PA) modules operably coupled to the external contact of the integrated circuit device, and arranged to receive an RF signal to be transmitted, amplify the received RF signal to be transmitted, and output the amplified signal. The plurality of LNAs and the plurality of PAs are selectively configurable to operate in at least a first, multi-antenna configuration and a second, single antenna high transmit power configuration. 1. An integrated circuit device comprising: a plurality of low noise amplifiers (LNAs) having respective input ports operably coupled to at least one external contact of the integrated circuit device and arranged to receive a first RF signal from the at least one external contact and output an amplified received first RF signal, and', 'the plurality of LNAs and the plurality of PAs are selectively configurable to operate in at least a first, multi-antenna configuration and a second, single antenna high transmit power configuration.', 'a plurality of power amplifiers (PAs) having respective output ports operably coupled to the at least one external contact of the integrated circuit device, and arranged to receive at respective power amplifier input ports a second RF signal and output an amplified second RF signal to be transmitted, wherein'}], 'at least one radio frequency (RF) transceiver module, wherein the at least one RF transceiver module comprises2. The integrated circuit device of wherein the plurality of LNAs and the plurality of PAs are selectively configurable to operate in ...

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Номер записи: 58
25-07-2013 дата публикации

TRANSMISSION DEVICE

Номер: US20130189938A1
Автор: Kaneko Michito, Nakatani Koji, Sakakibara Sigeki, Yamada Shu
Принадлежит: THE YOKOHAMA RUBBER CO., LTD.

The transmission device is constituted by transmitting units which are accommodated within a case in a state so that, in an xyz orthogonal coordinate system, in the z axis direction only two transmitting units are disposed adjacently and so that planar conducting plates are opposed to each other; in the x axis direction, two adjacent transmitting units are disposed so that one end portion of one unit and the other end portion of the other unit are adjacent; and in the y axis direction, two adjacent transmitting units are disposed so that one end portion of one unit and the other end portion of the other unit are adjacent. 1. A transmission device in which a plurality of transmitting units are adjacently disposed , comprising:the transmitting units having;first and second rectangular printed circuit boards disposed so that surfaces thereof are mutually parallel and surfaces on one side of each of the first and second printed circuit boards are in mutual opposition;a plurality of columnar connecting conductors furnished between the first printed circuit board and the second printed circuit board, the columnar connecting conductors being adapted for affixing one of the printed circuit boards to the other of the printed circuit boards with a predetermined interval therebetween, and conductively connecting a printed wiring of one of the printed circuit boards and a printed wiring of the other of the printed circuit boards;an electronic component forming a transmission circuit being mounted at one end portions of the first and second printed circuit boards in a lengthwise direction;a coil-shaped antenna that has a center axis extending in a width direction of the first and second printed circuit boards at the other end portions of the first and second printed circuit boards in the lengthwise direction; anda planar conductor plate affixed to the first printed circuit board, parallel to the other surface of the first printed circuit board at the other end portion thereof, ...

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Номер записи: 59
01-08-2013 дата публикации

OPTIMAL SWITCHING FREQUENCY FOR ENVELOPE TRACKING POWER SUPPLY

Номер: US20130194979A1
Автор: Levesque Chris
Принадлежит: RF MICRO DEVICES, INC.

A radio frequency (RF) communications system, which includes an RF power amplifier (PA) and an envelope tracking power supply, is disclosed. The RF communications system processes RF signals associated with at least a first RF communications band, which has a first bandwidth. The RF PA receives and amplifies an RF input signal to provide an RF transmit signal using an envelope power supply signal. The envelope tracking power supply provides the envelope power supply signal, which has switching ripple based on a programmable switching frequency. The programmable switching frequency is selected to be greater that the first bandwidth. 1. A radio frequency (RF) communications system adapted to process RF signals associated with at least a first RF communications band and comprising:an RF power amplifier (PA) adapted to receive and amplify an RF input signal to provide an RF transmit signal using an envelope power supply signal; and the first RF communications band has a first bandwidth;', 'the envelope power supply signal has switching ripple based on a programmable switching frequency; and', 'the programmable switching frequency is selected to be greater than the first bandwidth., 'an envelope tracking power supply adapted to provide the envelope power supply signal, such that2. The RF communications system of wherein the programmable switching frequency is further selected claim 1 , such that the programmable switching frequency is high enough to allow the envelope power supply signal to at least partially envelope track the RF transmit signal.3. The RF communications system of wherein the envelope tracking power supply comprises frequency synthesis circuitry adapted to provide a switching clock signal having the programmable switching frequency.4. The RF communications system of wherein control circuitry is adapted to select the programmable switching frequency.5. The RF communications system of further comprising the control circuitry.6. The RF communications system ...

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Номер записи: 60
01-08-2013 дата публикации

SIGNAL PROCESSING SYSTEM AND SIGNAL PROCESSING METHOD

Номер: US20130195221A1
Автор: LOZHKIN Alexander Nikolaevich
Принадлежит: FUJITSU LIMITED

A signal processing system is provided. The signal processing system includes: a peak-to-average ratio (PAPR) reducer that reduces a peak-to-average ratio (PAPR) of an input signal x(n), a clipping noise processing system that generates an equivalent clipping noise signal ε*(n) that is defined as a weighted sum of a weighted in-band clipping signal W*ε(n) and a weighted out-of-band clipping signal W*ε(n) to be used for determining functions of a predistorter that suppresses out-of-band spectrum caused during peak-to-average power reduction process and for generating an input signal of an amplifier which input signal has reduced clipping noise and be distorted so as to compensate nonlinearity of the amplifier. 1. A communication signal processing system , comprising:a peak-to-average ratio (PAPR) reducer that reduces a peak-to-average ratio (PAPR) of an input signal to generate a PAPR reduced signal, wherein generation of a clipping noise signal is occurred in the PAPR reducer;a clipping noise processing system that splits the clipping noise signal into an in-band clipping signal and an out-of-band clipping signal, and generates an equivalent clipping noise signal that is defined as a weighted sum of a weighted in-band clipping signal and a weighted out-of-band clipping signal, wherein the weighted in-band clipping signal is generated by weighting the in-band clipping signal with a first weight, and the weighted out-of-band clipping signal is generated by weighting the out-of-band clipping signal with a second weight;a reduced noise signal generator that generate a reduced noise signal that has a further reduced peak-to-average power level using the equivalent clipping noise signal ε*CL(n);a predistorter that distorts the PAPR reduced signal and the reduced clipping noise signal to generate a distorted signal and a distorted noise signal by applying an approximated inverse of an amplification function on the PAPR reduced signal and the reduced noise signal, ...

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Номер записи: 61
08-08-2013 дата публикации

SEMICONDUCTOR DEVICE AND COMMUNICATION SYSTEM INCLUDING THE SAME

Номер: US20130203361A1
Автор: HIJIOKA Kenichiro, Yamaguchi Koichi
Принадлежит: RENESAS ELECTRONICS CORPORATION

Disclosed is a semiconductor device including a semiconductor chip and a semiconductor package. The semiconductor package includes an antenna formed of a lead frame, a first wire that connects the antenna and a first electrode pad of the semiconductor chip, and a second wire that connects the antenna and a second electrode pad of the semiconductor chip. The semiconductor chip is disposed in one of four regions in the semiconductor package sectioned by line segments connecting midpoints of two pairs of opposing sides of the semiconductor package. A centroid of the semiconductor chip is positioned outside a closed curve composed of a straight line segment connecting a first connection point where the antenna and the first wire are connected and a second connection point where the antenna and the second wire are connected, and a line connecting the first and second connection points along the antenna. 1. A semiconductor device comprising:a semiconductor chip; anda semiconductor package that seals the semiconductor chip and has a substantially rectangular planar shape, wherein first and second electrode pads; and', 'at least one of a transmission circuit that transmits a signal via the first and second electrode pads and a reception circuit that receives the signal via the first and second electrode pads,, 'the semiconductor chip comprises an antenna formed of a lead frame;', 'a first wire that connects the antenna and the first electrode pad; and', 'a second wire that connects the antenna and the second electrode pad,, 'the semiconductor package comprisesthe semiconductor chip is disposed in one of four regions in the semiconductor package that are sectioned by line segments connecting midpoints of two pairs of opposing sides of the semiconductor package, anda centroid of the semiconductor chip is positioned outside a closed curve that is composed of a line segment connecting by a straight line a first connection point where the antenna and the first wire are connected ...

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Номер записи: 62
08-08-2013 дата публикации

VARIABLE-SIZE MIXER FOR HIGH GAIN RANGE TRANSMITTER

Номер: US20130203366A1
Автор: MOREIRA Jose Pedro
Принадлежит:

Implementations of a high gain range transmitter with variable-size mixers are described. 1. An apparatus to provide an output frequency signal , comprising:a digital to analog converter (DAC) component to receive and convert a digitally processed baseband signal, and to output a first analog baseband signal and a second analog baseband signal;a first sub-mixer component to modulate the first analog baseband signal and a frequency signal to generate a first modulated signal;a second sub-mixer component to modulate the second analog baseband signal and the frequency signal to generate a second modulated signal;a component to receive the first modulated signal and the second modulated signal and to provide the output frequency signal, wherein at least one of the first and second sub-mixer components is switchable.2. The apparatus of claim 1 , wherein at least one of the first and second sub-mixer components is ON/OFF switchable.3. The apparatus of claim 1 , wherein each of the first and second sub-mixer components is switchable.4. The apparatus of claim 1 , wherein the first sub-mixer component and the second sub-mixer component are independently switchable.5. The apparatus of claim 1 , wherein the DAC component includes multiple DAC cells.6. The apparatus of claim 5 , wherein the DAC component includes the multiple DAC cells that are subdivided to form N sub-DAC components connected to N sub-mixer components.7. The apparatus of claim 1 , wherein causing at least one of the first and second sub-mixer components to switch is determined by at least one of the following: by transmitted power level based on the digitally processed baseband signal claim 1 , or by an instantaneous value of the first analog baseband signal and the second analog baseband signal claim 1 , wherein the analog baseband signals vary due to amplitude modulation.8. The apparatus of claim 1 , wherein the first sub-mixer component and the second sub-mixer component are connected in parallel.9. The ...

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Номер записи: 63
15-08-2013 дата публикации

MICRO ANTENNA FEEDER FOR WIDE BAND

Номер: US20130210372A1
Автор: LEE Jun Hee, Park Chan Goo
Принадлежит: WIWORLD CO., LTD

The present invention relates to a micro wideband antenna feeder, and more particularly, to a micro wideband antenna feeder in which a quad scheme antenna and a cross dipole antenna are coupled to each other. The micro wideband antenna feeder includes: a quad scheme antenna; and a cross dipole antenna installed orthogonal to the quad scheme antenna and irradiating current distribution orthogonal to current distribution irradiated from the quad scheme antenna. According to preferred embodiments of the present invention, since phases 0, 90, 180, and 270 can be shifted by being designed as a feeding network PCB, a circularly polarized wave can be implemented. 1. A micro wideband antenna feeder , comprising:a quad scheme antenna; anda cross dipole antenna installed orthogonal to the quad scheme antenna and irradiating current distribution orthogonal to current distribution irradiated from the quad scheme antenna.2. The micro wideband antenna feeder of claim 1 , further comprising:a transmission circuit substrate coupled to the quad scheme antenna or the cross dipole antenna; anda reception circuit substrate coupled to the quad scheme antenna or the cross dipole antenna,wherein both transmission and reception bands meet wideband circularly polarized characteristics.3. The micro wideband antenna feeder of claim 2 , wherein the quad scheme antenna or the cross dipole antenna share the same transmission/reception focus and space as an assembled parabola dish.4. The micro wideband antenna feeder of claim 2 , wherein the transmission circuit substrate includes a transmission circuit pattern substrate and a transmission circuit cover substrate and the reception circuit substrate includes a reception circuit pattern substrate and a reception circuit cover substrate claim 2 ,wherein the transmission circuit pattern substrate and the reception circuit pattern substrate include:a signal inputting unit;a signal distributing and phase shifting unit distributing a signal generated ...

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Номер записи: 64
15-08-2013 дата публикации

Systems and Methods for Tuning an Antenna for a Frequency Modulation Transceiver

Номер: US20130210373A1
Автор: Dubash Noshir, JR. Thomas E., McConnell Richard J., Ricks
Принадлежит: CSR Technology Inc.

Systems and methods for tuning an antenna for a frequency modulation (FM) transceiver are provided. A representative system includes: a network of electrical adjustable passive components that receives and sends radio frequency (RF) signals to a receiver circuitry via the network of electrical adjustable passive components. The receiver circuitry determines the received signal strength indication (RSSI) of the RF signal. The system further includes a transmitter circuitry that transmits RF signals via the network of electrical adjustable passive components, and a peak detector circuitry that receives and determines a voltage output of the RF signals from the variable capacitors. An auto-tune circuitry receives the RSSI and output value from the receiver circuitry and the peak detector circuitry, respectively. The auto-tune circuitry is configured to adjust capacitance values of at least one of the serial variable capacitor and the parallel variable capacitor based on the RSSI and the voltage output during the reception and transmission of the RF signals, respectively. 1. A handheld device comprising:a receiver circuitry that receives RF signals and determines the received signal strength indication (RSSI) of the RF signals; andan antenna auto-tune circuitry that receives the RSSI, the antenna auto-tune circuitry being configured to adjust a value of at least one of its electrical component based on the RSSI during the reception of the RF signals.2. The handheld device as defined in claim 1 , wherein the at least one of its electrical component includes at least one of the following passive components: one or more variable parallel capacitors claim 1 , one or more variable serial capacitors claim 1 , one or more parallel capacitors claim 1 , one or more serial capacitors claim 1 , one or more variable parallel inductors claim 1 , one or more variable serial inductors claim 1 , one or more parallel inductors claim 1 , one or more serial inductors claim 1 , one or more ...

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Номер записи: 65
22-08-2013 дата публикации

Peak-to-average power reduction method

Номер: US20130215946A1
Автор: Brian Walker, Philipp Schmid
Принадлежит: NAUTEL Ltd

A method of reducing peak-to-average power in a hybrid signal is provided. The method determines peaks in power by defining a sample point by way of a digital vector and an analog vector. The digital and analog vectors are added together to generate a hybrid vector which is used to compare the sample point to the maximum desired peak threshold. An error vector is used to correct the sample point to a desired power level. Once the sample point has been corrected it can be added back to the analog signal and transmitted.

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Номер записи: 66
22-08-2013 дата публикации

Illumination optical system, light irradiation apparatus for spectrometry, and spectrometer

Номер: US20130217327A1
Автор: Katsuhisa Orihara, Masayoshi Kanno, Norio Saito, Satoru Sugita
Принадлежит: Sony Corp

Provided is a portable communication device including a receiver, a transmitter, an adjustment signal generator, an adjustment signal detector, and a control circuit unit. The transmitter transmits an adjustment signal to the receiver in order to adjust a received resonant frequency. The adjustment signal detector detects a parameter including information on a transmission state of the adjustment signal at a time of transmitting the adjustment signal. Then, the control circuit unit corrects a deviation of the received resonant frequency based on a detection result of the adjustment signal detector.

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Номер записи: 67
29-08-2013 дата публикации

Receiving Arrangement of a Motor Vehicle

Номер: US20130223568A1
Автор: SCHNEIDER Steffen
Принадлежит: Bayerische Motoren Werke Aktiengesellschaft

A receiving arrangement of a motor vehicle has a first antenna array disposed at or on the body of the motor vehicle, and having a second antenna array disposed on a window pane of the motor vehicle. The antenna arrays are coupled to a receiving unit for further processing, in particular, for the demodulation and/or decoding of a respective received signal of the antenna arrays. The receiving unit is directly connected with the first and the second antenna array. The receiving unit, during operation, causes a conversion of a respective received analog signal of the antenna arrays to a respective loss-free transportable digital signal, which the receiving unit provides to a control unit of the receiving unit for further processing. 1. An arrangement of a motor vehicle , comprising:a first antenna array disposed on a body of the motor vehicle;a second antenna array disposed on a window pane of the motor vehicle;a receiving unit having a number of receivers, the receiving unit being directly connected with the first array and the second array and, during operation, causing a conversion of respective received signals of the first array and the second array to respective loss-free transportable digital signals; anda control unit operatively coupled to receive the respective loss-free transportable digital signals for processing.2. The arrangement according to claim 1 , wherein the respective received signals of the first and second antenna arrays are further processed via at least one of demodulation and decoding of the respective received signal.3. The arrangement according to claim 1 , wherein the receiving unit with the number of receivers is arranged in an immediate spatial proximity of the first antenna array and the second antenna array.4. The arrangement according to claim 1 , wherein an analog high-frequency signal is transmitted during the operation via a direct connection.5. The arrangement according to claim 1 , wherein the receiving unit is directly connected ...

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Номер записи: 68
29-08-2013 дата публикации

WIRELESS COMMUNICATION DEVICE, METHOD FOR CONTROLLING WIRELESS COMMUNICATION DEVICE, PROGRAM, AND STORAGE MEDIUM

Номер: US20130225098A1
Автор: Ikehata Kazuhiko
Принадлежит: SHARP KABUSHIKI KAISHA

In a wireless communication device (), adjustment means (matching controlling means ()) changes a reactance of a matching section (), determination means (calculation means (), matching controlling means ()) determines whether a resonance frequency of an antenna () exists on a side higher than or lower than the operation frequency of the antenna () on the basis of a change in an intensity of a signal, which change is caused by a change in the reactance and is detected by a signal intensity detection section (), and the adjustment means adjusts the reactance so that the resonance frequency is closer to the operation frequency on the basis of a result of determination of the determination means. 1. A wireless communication device , comprising:an antenna;a wireless controlling section for processing a signal that the antenna transmits and receives;a matching section which is connected between the antenna and the wireless controlling section and has a variable reactance;signal intensity detection means for detecting an intensity of the signal passed between the antenna and the wireless controlling section;adjustment means for changing the variable reactance of the matching section;determination means for determining whether a resonance frequency of the antenna exists on a side higher than or lower than an operation frequency of the antenna on the basis of a change in the intensity which is caused by a change in the variable reactance; anda storage section in which a plurality of matching adjustment values for defining the variable reactance,the adjustment means further adjusting the variable reactance to a value defined by one of the plurality of matching adjustment values so that the resonance frequency is closer to the operation frequency on the basis of a result of determination of the determination means.2. The wireless communication device as set forth in claim 1 , wherein:the operation frequency is a frequency for use in transmission via the antenna; andthe ...

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Номер записи: 69
29-08-2013 дата публикации

Wireless device with filters to support co-existence in adjacent frequency bands

Номер: US20130225107A1
Автор: Chang-Ho Lee, Christian Holenstein, Frederic Bossu, Mahim Ranjan, Mark Vernon Lane, Praveen-Kumar Sampath, Sumit Verma, Wesley Alan Sampson
Принадлежит: Qualcomm Inc

Techniques for using a narrow filter located before a power amplifier to reduce interference in an adjacent frequency band are disclosed. In an exemplary design, an apparatus (e.g., a wireless device) includes the narrow filter and the power amplifier. The narrow filter is for a first frequency band (e.g., Band 40) and has a first bandwidth that is more narrow than the first frequency band. The narrow filter receives and filters an input radio frequency (RF) signal and provides a filtered RF signal. The power amplifier receives and amplifies the filtered RF signal and provides an amplified RF signal. The apparatus may further include a full filter for the first frequency band and located after the power amplifier. The full filter receives and filters the amplified RF signal and provides an output RF signal when it is selected for use.

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Номер записи: 70
12-09-2013 дата публикации

Wideband Power Efficient High Transmission Power Radio Frequency (RF) Transmitter

Номер: US20130235953A1
Автор: Brandolini Massimo, Dauphinee Leonard, GOMEZ Ray (Ramon), Khan Reza Rahman, Koh Dongsoo, Shin Young, Xiao Jianhong, Zhong Chonghua
Принадлежит: BROADCOM CORPORATION

Embodiments provide transmitter topologies that improve the power efficiency and bandwidth of RF transmitters for high transmission power applications. In an embodiment, the common-emitter/source PA of conventional topologies is replaced with a current-input common-base/gate PA, which is stacked on top on an open-collector/drain current-output transmitter. The common-base/gate PA protects the output of the transmitter from large output voltage swings. The low input impedance of the common-base/gate PA makes the PA less susceptible to frequency roll-off, even in the presence of large parasitic capacitance produced by the transmitter. At the same time, the low input impedance of the common-base/gate PA reduces the voltage swing at the transmitter output and prevents the transmitter output from being compressed or modulated, In an embodiment, the DC output current of the transmitter is reused to bias the PA, which results in power savings compared to conventional transmitter topologies. 1. A multi-chip module (MCM) , comprising:a substrate;a transmitter System on Chip (SoC) including a current-output transmitter circuit; anda power amplifier (PA) chip including a current-input PA,wherein the transmitter SoC and the PA chip are located on the substrate.2. The MCM of claim 1 , wherein the substrate includes a package substrate of the transmitter SoC.3. The MCM of claim 1 , wherein transmitter SoC and the PA chip are implemented as flip-chips on the substrate.4. The MCM of claim 1 , wherein the current-output transmitter circuit is configured to generate an output current claim 1 , and wherein the current-input PA is configured to receive the output current and generate a desired output voltage across a load.5. The MCM of claim 1 , wherein the transmitter SoC is implemented using a first process technology and the PA chip is implemented using a second process technology.6. The MCM of claim 5 , wherein the second process technology tolerates higher voltage levels than the ...

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Номер записи: 71
12-09-2013 дата публикации

Memory card connector

Номер: US20130237097A1
Автор: Hidehiro Nakamura
Принадлежит: Kyocera Connector Products Corp

A memory card connector includes a housing including an accommodation portion and contacts, a slider movable between an initial position and a fully-inserted position, a correct-insertion abutting portion and an incorrect-insertion abutting portion provided on the slider, and a stopper-switch leaf spring. A stopper is provided on the stopper-switch leaf spring, wherein the slider is allowed to slidably move from the initial position to the fully-inserted position when the stopper-switch leaf spring is positioned at a stopper-ineffective position, and the slider is prevented from slidably moving from the initial position to the fully-inserted position when the stopper-switch leaf spring is positioned at a stopper-effective position. The stopper-switch leaf spring and the stopper are positioned within the housing when the stopper-switch leaf spring is in a free state.

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Номер записи: 72
19-09-2013 дата публикации

Gain control system

Номер: US20130241654A1
Автор: Hooman Darabi, Mohyee Mikhemar
Принадлежит: Broadcom Corp

A gain control system may include an input terminal that receives an input signal. The gain control system may include a first transistor having a source connected with the input terminal and a drain connected with an output terminal. The gain control system may include a second transistor having a gate connected with the input terminal and the source of the first transistor. The second transistor may have a drain connected with the output terminal. The second transistor may generate a reduction signal. The output terminal may output an output signal based on the input signal and the reduction signal.

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Номер записи: 73
19-09-2013 дата публикации

CLASSIFIER FOR RADIO FREQUENCY FRONT-END (RFFE) DEVICES

Номер: US20130242800A1
Автор: "OShea Helena Deirdre", GRUBER Hans Georg, Holenstein Christian
Принадлежит: QUALCOMM INCORPORATED

A method for classifying radio frequency front-end (RFFE) devices. The method includes enumerating a radio frequency front-end (RFFE) slave device according to at least one classifier bit within the RFFE slave device. The method also includes adjusting an RFFE control interface of an RFFE master device according to slave device configuration information determined from the at least one classifier bit within the RFFE slave device. 1. A method of wireless communication , comprising:enumerating a radio frequency front-end (RFFE) slave device according to at least one classifier bit within the RFFE slave device; andadjusting an RFFE control interface of an RFFE master device according to slave device configuration information determined from the at least one classifier bit within the RFFE slave device.2. The method of claim 1 , in which adjusting further comprises:configuring radio frequency plane control software or hardware of the RFFE master device according to the slave device configuration information.3. The method of claim 1 , in which adjusting further comprises:adjusting a voltage level of the RFFE control interface of the RFFE master device according to the slave device configuration information.4. The method of claim 1 , in which adjusting further comprises:adjusting a clock frequency of the RFFE master device according to the slave device configuration information.5. The method of claim 1 , in which enumerating further comprises reading a plurality of classifier bits from a classifier register within the RFFE slave device.6. The method of claim 1 , in which the slave device configuration information comprises slave device specification information claim 1 , a minimum/maximum clock frequency claim 1 , a minimum/maximum power level claim 1 , slave devices function(s) claim 1 , a preferred RF communication frequency claim 1 , an electromagnetic interference level claim 1 , and/or a device class.7. An apparatus configured for wireless communication claim 1 , the ...

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Номер записи: 74
19-09-2013 дата публикации

SYSTEM AND METHOD FOR DIGITAL MEMORIZED PREDISTORTION FOR WIRELESS COMMUNICATION

Номер: US20130243124A1
Автор: Yang Dali, Yang Jia
Принадлежит: Dali Systems Co. Ltd.

An embodiment of the invention is a system for signal processing in preparation for wireless transmission, the wireless transmission being from a portable wireless communication device and including use of a power amplifier having nonlinear characteristics. The system includes memory for storing digitally-indexed information. The digitally-indexed information models nonlinear characteristics of the power amplifier, and the digitally-indexed information is stored prior to processing of a first signal that reflects information to be communicated. The system further includes first logic, configured to accept the first signal and to retrieve, based on the first signal, a portion of the digitally-indexed information stored in the memory, and second logic, configured to generate a second signal based on the portion of the digitally-accessed information and on the first signal. The second signal pre-compensates for the nonlinear characteristics of the power amplifier, and the second signal is for wireless transmission based on the second signal. 1. A method of operating a power amplifier , the method comprising:initializing the power amplifier;establishing pre-computed distortion contributions by training based on pre-compensation training feedback signals representative of output of the power amplifier;storing the pre-computed distortion contributions in a lookup table;maintaining the lookup table;accepting an original value that reflects information to be communicated;generating a digital lookup-table key based on the original value;retrieving from the lookup table, using the digital lookup-table key, a corresponding pre-computed distortion contribution for the original value;distorting the original value based on the corresponding pre-computed distortion contribution to obtain a distorted value to pre-compensate for the nonlinear characteristics of the power amplifier; andwirelessly transmitting a pre-distorted signal based on the distorted value.2. The method of ...

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Номер записи: 75
19-09-2013 дата публикации

RADIO FREQUENCY ARCHITECTURE FOR SPECTRUM ACCESS NETWORKS

Номер: US20130244592A1
Автор: HU Wendong, Vlantis George A.
Принадлежит: STMicroelectronics, Inc.

Radio frequency (RF) architectures for spectrum access networks are provided. Embodiments of the invention generally provide a radio frequency (RF) architecture for customer premise equipment (CPE) for use in, for example, IEEE 802.22 wireless regional area networks (WRANs). In some embodiments, the CPE RF architecture includes two receive chains with a directional antenna and an omni-directional antenna, respectively. The CPE RF architecture facilitates opportunistic out-of-band spectrum sensing and WRAN signal receiving that are performed in parallel with data transmission. 1. A method of operating a coordinated pair of circuits in a Consumer Premise Equipment (CPE) in a Wireless Regional Area Network (WRAN) comprising:providing an out-of-band sensing circuit comprising: an omnidirectional sensing antenna; a first tunable pre-selective filter coupled to the omnidirectional sensing antenna; a first low noise amplifier coupled to the first tunable pre-selective filter; a first mixer coupled to the low noise amplifier; a first tunable local oscillator coupled to the first mixer; a first channel filter coupled to the first mixer; a first WRAN synchronization demodulator module coupled to the first channel filter; and a sensing scheme module coupled to the first channel filter;the first tunable pre-selective filter and the first tunable local oscillator receiving a first common tuning signal;the first WRAN synchronization demodulator module ignoring in-band signals but detecting other, out-of-band, WRAN signals, either from other WRAN base stations, television channels, or from other Consumer Premise Equipment;providing a transmitting and receiving circuit comprises: a directional antenna operable both as a transmitter and a receiver; a radio frequency (RF) switch coupled to the directional antenna; an in-band demodulation circuit coupled to the RF switch; and an in-band modulation circuit coupled to the RF switch; andthe out-of-band sensing circuit operating at the ...

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Номер записи: 76
19-09-2013 дата публикации

DATA COMMUNICATION TERMINAL APPARATUS

Номер: US20130244596A1
Автор: SOEKAWA Kouji
Принадлежит:

A data communication terminal apparatus is disclosed that includes a printed circuit board, a ground plane formed in the printed circuit board, a connector disposed on an end portion of the printed circuit board, and an antenna configured to have a feeding portion at one end and another end, the other end being connected to the ground plane via a capacitor between the feeding portion and the connector, the antenna forming a loop with the ground plane. 1. A data communication terminal apparatus comprising:a printed circuit board;a ground plane formed in the printed circuit board;a connector disposed on an end portion of the printed circuit board; andan antenna configured to have a feeding portion at one end and another end, the other end being connected to the ground plane via a capacitor between the feeding portion and the connector, the antenna forming a loop with the ground plane.2. The data communication terminal apparatus as claimed in claim 1 , further comprising a main antenna formed on the printed circuit board claim 1 , the main antenna being disposed on an opposite side to that of the end portion of the printed circuit board.3. The data communication terminal apparatus as claimed in claim 1 , wherein the capacitor is a capacitor chip mounted on the printed circuit board claim 1 , or a capacitor formed by a first edge portion of the antenna and a second edge portion of the ground plane claim 1 , the first edge portion and the second edge portion facing each other in plan view.4. The data communication terminal apparatus as claimed in claim 1 , wherein the ground plane is formed in a rectangular shape having a cutoff area which is formed beside the connector in plan view claim 1 , andwherein the antenna forms the loop with an edge of the ground plane, the edge being formed along the cutoff area.5. The data communication terminal apparatus as claimed in claim 1 , wherein the antenna is formed by patterning a conductive layer of the printed circuit board.6. The ...

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Номер записи: 77
26-09-2013 дата публикации

MULTI-BAND WIDE BAND POWER AMPLIFIER DIGITAL PREDISTORTION SYSTEM

Номер: US20130251066A1
Автор: CHO Kyoung-Joon, KIM Wan-Jong, Stapleton Shawn Patrick
Принадлежит: DALI SYSTEMS CO., LTD., Maples Corporate Services Limited

A high performance and cost effective method of RF-digital hybrid mode power amplifier systems with high linearity and high efficiency for multi-frequency band wideband communication system applications is disclosed. The present disclosure enables a power amplifier system to be field reconfigurable and support multiple operating frequency bands on the same PA system over a very wide bandwidth. In addition, the present invention supports multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. 1. A digital predistortion system comprising:a multi-band input signal;at least one power amplifier for providing an amplified output including a distortion characteristic;a feedback signal derived from the amplified output, the feedback signal including a representation of at least a portion of the distortion characteristic; andpredistortion logic responsive to an aliased representation of the feedback signal for generating predistortion coefficients for linearizing the amplified output of the power amplifier, wherein a sampling rate of the aliased representation of the feedback signal is less than twice a maximum bandwidth of the feedback signal.2. The digital predistortion system of wherein the sampling rate of the feedback signal is less than a sampling rate of the multi-band input signal.3. The digital predistortion system of wherein the predistortion logic is responsive to a sampled representation of the multi-band input signal.4. The digital predistortion system of further comprising a digital predistorter that receives the multi-band input signal claim 1 , the digital predistorter effecting the predistortion coefficients derived by the predistortion logic.5. The digital predistortion system of wherein the digital predistorter utilizes an adaptive polynomial-based digital predistortion system claim 5 , the polynomial-based digital predistortion system utilizing the predistortion coefficients generated by the predistortion logic.6. The digital ...

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Номер записи: 78
03-10-2013 дата публикации

Wireless apparatus and distortion compensating method

Номер: US20130259154A1
Автор: Hideharu Shako, Hikaru Ishikawa, Satoshi Matsubara
Принадлежит: Fujitsu Ltd

A wireless apparatus includes amplifying systems each including a storing unit storing a distortion compensation coefficient for compensation for a nonlinear distortion of one or more transmission signals, a compensator compensating for the nonlinear distortion using the distortion compensation coefficient stored in the storing unit, and an amplifier amplifying the transmission signal after distortion compensation. The wireless apparatus further includes a switch that selects feedback signals corresponding to the transmission signals output from the amplifying systems, a subtractor that derives one or more differences between the feedback signal selected in the switch and the transmission signal, a first calculator that derives a distortion compensation coefficient that restricts the difference derived in the subtractor, and a switch controller that controls a length of time during which the feedback signal is selected in the switch depending on magnitude of distortion of the transmission signal output from the amplifying system.

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Номер записи: 79
03-10-2013 дата публикации

TRANSMITTER LINEARIZED IN RESPONSE TO DERIVATIVE SIGNAL AND METHOD THEREFOR

Номер: US20130259159A1
Автор: Brombaugh Eric M., MCCALLISTER RONALD DUANE
Принадлежит: CrestCom, Inc,

A transmitter () includes a low power nonlinear predistorter () that inserts predistortion configured to compensate for a memoryless nonlinearity () corresponding to gain droop and another memoryless nonlinearity () corresponding to a video signal. When efforts are taken to reduce memory effects, such as configuring a network of components () that couple to an HPA () to avoid resonance frequencies substantially throughout a video bandwidth (), high performance linearization at low power results without extending linearization beyond that provided by the memoryless nonlinear predistorter (). A look-up table () has address inputs responsive to a magnitude parameter () of a communication signal (). A pre-distorted communication signal () is responsive to the output of the look-up table, a derivative signal (), and possibly one or more variable bias parameters (). The look-up table () is updated in response to an LMS control loop. 1. A method of linearizing a transmitter having an amplifier which applies a nonlinear amplifier transform to a signal input at said amplifier , said method comprising:providing a complex communication signal;extracting a magnitude parameter from said complex communication signal;{'b': '202', 'taking a derivative () with respect to time of a signal responsive to said magnitude parameter to produce a derivative signal;'}{'b': '204', 'distorting said complex communication signal in response to said derivative signal () to produce a predistorted communication signal; and'}forming said signal input at said amplifier in response to said predistorted communication signal.2. (canceled)3. A method as claimed in wherein said signal responsive to said magnitude parameter is responsive to a polynomial function of said magnitude parameter.4. A method as claimed in wherein said signal responsive to said magnitude parameter is produced by a look-up table.5. A method as claimed in wherein said magnitude parameter is a first magnitude parameter and said ...

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Номер записи: 80
10-10-2013 дата публикации

Rf and high-speed data cable

Номер: US20130265117A1
Автор: Alireza Mahanfar, Kim Schulze, Stanley Yu Tao Ng
Принадлежит: Individual

A cable is disclosed for transmitting high speed digital baseband signals together with analog RF signals between first and second components. The RF signals may be transmitted between an antenna in the first component and an RF transceiver in the second component at operating frequencies such as for example 70 MHz to 6 GHz. In order to reduce cross-talk between the digital and analog lines, the analog signal may be carried over a line including a pair of wires such as a differential signal pair. The pair of wires carrying the analog signal may include baluns at either end to enable delivery over the pair of wires. The baluns may be wideband baluns to support communication over the full range of operating frequencies. In order to further reduce cross-talk, the digital and/or analog lines may be encased within an EMI-absorbing jacket made of extruded ferrite as one example.

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Номер записи: 81
17-10-2013 дата публикации

ANTENNA ASSEMBLY FOR LONG-RANGE HIGH-SPEED WIRELESS COMMUNICATIONS

Номер: US20130271337A1
Автор: HUERTA Gerardo, LEE Jude
Принадлежит:

Various embodiments of antenna assemblies are disclosed herein. In one embodiment, the antenna assembly includes a reflector comprising a center opening, a feed-antenna subassembly situated in front of the reflector, a rear housing situated behind the reflector, and a pole-mounting bracket comprising a base plate situated between the reflector and the rear housing. The feed-antenna subassembly comprises a feed tube that houses at least one of: a transmitter circuit and a receiver circuit. The rear housing is coupled to a front side of the reflector via the center opening. The rear housing comprises a center cavity, and a back end of the feed tube is inserted in and coupled to the center cavity. The base plate is coupled to the reflector and the rear housing in such a way that decoupling between the base plate and the reflector requires a prior decoupling between the feed-antenna subassembly and the rear housing and a prior decoupling between the rear housing and the reflector. 1. An antenna assembly , comprising:a reflector comprising a center opening;a feed-antenna subassembly situated in front of the reflector, wherein the feed-antenna subassembly comprises a feed tube that houses at least one of: a transmitter circuit and a receiver circuit;a rear housing situated behind the reflector, wherein the rear housing is coupled to a front side of the reflector via the center opening, wherein the rear housing comprises a center cavity, and wherein a back end of the feed tube can be inserted in and coupled to the center cavity; anda pole-mounting bracket comprising a base plate and a back plate, wherein the base plate is situated between the reflector and the rear housing, and wherein the base plate can be coupled to the reflector and the rear housing in such a way that decoupling between the base plate the reflector requires a prior decoupling between the feed-antenna subassembly and the rear housing and a prior decoupling between the rear housing and the reflector.2. ...

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Номер записи: 82
17-10-2013 дата публикации

Reducing transient effects when changing transmit chain power

Номер: US20130272168A1
Автор: Brian Clarke Banister, Jong Hyeon Park, Ketan HUMNBADKAR, Mingxia Cheng, Wei-Hao Lin
Принадлежит: Qualcomm Inc

A method, an apparatus, and a computer program product for a wireless communication device are provided. The apparatus determines a receive timing for receiving through at least one receive chain element. The apparatus determines a time to turn on/off at least one transmit chain element based on the determined receive timing and based on receiver impact to the at least one receive chain element caused by turning on/off the at least one transmit chain element. The apparatus reduces receiver impact to the at least one receive chain element by turning on/off the at least one transmit chain element at the determined time.

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Номер записи: 83
17-10-2013 дата публикации

LOW POWER DATA RECOVERY USING OVER-CLOCKING

Номер: US20130272368A1
Автор: Yang Wei-Lien
Принадлежит:

Described herein are apparatus, system, and method for low power data recovery using over-clocking. The apparatus is a receiver that comprises an edge detector to detect a first falling edge and a first rising edge of an input signal received from a transmitter; a counter to count in a first direction in response to detecting the first falling edge, and to count in a second direction in response to detecting the first rising edge of the input signal, the counter to generate a final count value based on the counts in the first and second directions; and a decision unit to determine whether data in the input signal is of logical high or logical low value, the determination made according to the final count value, wherein the receiver and the transmitter are a Mobile Industry Processor Interface (MIPI®) M-PHY receiver and transmitter. 1. A receiver comprising:an edge detector to detect a first falling edge and a first rising edge of an input signal received from a transmitter;a counter to count in a first direction in response to detecting the first falling edge, and to count in a second direction in response to detecting the first rising edge of the input signal, the counter to generate a final count value based on the counts in the first and second directions; anda decision unit to determine whether data in the input signal is of logical high or logical low value, the determination made according to the final count value.2. The receiver of further comprises:an over-sampler, coupled to the counter, to generate an over-sampled clock signal for the counter.3. The receiver of claim 2 , wherein the over-sampler is operable to generate the over-sampled clock signal by generating pulse signals at the rising and falling edges of an input clock signal.4. The receiver of further comprises a flip-flop or a latch to latch an output of the decision unit by one of the rising or falling edges of the input clock signal.5. The receiver of claim 1 , wherein the input signal is a pulse ...

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Номер записи: 84
17-10-2013 дата публикации

OVERSAMPLING DIGITAL RECEIVER FOR RADIO-FREQUENCY SIGNALS

Номер: US20130272453A1
Автор: Gupta Deepnarayan
Принадлежит:

A system and method for receiving a radio frequency signal, comprising a device for digitizing, without prior alteration of frequency, an analog radio frequency representation of each of a plurality of radio frequency signals to produce a respective plurality of digital radio frequency signals having a respective associated radio frequency digital clock, the plurality of digital radio frequency signals having a sufficiently high respective associated clock rate to preserve an information content of an information communication present in the analog radio frequency representation; a switch matrix adapted to concurrently switch the plurality of digital radio frequency signals and associated digital radio frequency clock to ones of a plurality of digital signal processors; and a control adapted to selectively automatically control the concurrent switching of a plurality of digital signals and associated digital clock to the respective plurality of digital signal processors; wherein the digital signal processors produce processed representations of information contained in respective analog radio frequency representations. 1. A method for receiving a radio frequency signal , comprising:digitizing, without prior alteration of frequency, an analog radio frequency representation of each of a plurality of radio frequency signals to produce a respective plurality of digital radio frequency signals having a respective associated radio frequency digital clock, the plurality of digital radio frequency signals having a sufficiently high respective associated clock rate to preserve an information content of an information communication present in the analog radio frequency representation;concurrently switching the plurality of digital radio frequency signals and associated digital radio frequency clock to ones of a plurality of digital signal processors;selectively automatically controlling the concurrent switching of a plurality of digital signals and associated digital clock to ...

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Номер записи: 85
17-10-2013 дата публикации

MULTI-BAND MULTI-PATH RECEIVING AND TRANSMITTING DEVICE AND METHOD, AND BASE STATION SYSTEM

Номер: US20130273975A1
Автор: Li Yulin, Wu Wangjun, Yan Fengqing, Zhang Xiaodong, Zhang Xiwen
Принадлежит:

A multi-band multi-path receiving and transmitting device and method, and a base station system are provided. The multi-band multi-path receiving and transmitting device includes a broadband antenna, at least two multi-frequency couplers, a multi-band transceiver, and a signal processing module. The multi-band transceiver is adopted to decrease the number of the transceivers, thereby reducing the material cost and the mounting cost of the base station system. 1. A multi-band multi-path receiving and transmitting device , comprising a broadband antenna , at least two multi-frequency couplers , a multi-band transceiver , and a signal processing module , whereinthe broadband antenna is configured to receive at least a first frequency band signal and a second frequency band signal, and send the first frequency band signal and the second frequency band signal to the at least two multi-frequency couplers;the at least two multi-frequency couplers comprise a first multi-frequency coupler and a second multi-frequency coupler, the first multi-frequency coupler is configured to receive the first frequency band signal and the second frequency band signal sent by the broadband antenna, and send the first frequency band signal and the second frequency band signal to the multi-band transceiver, and the second multi-frequency coupler is configured to receive the first frequency band signal and the second frequency band signal sent by the broadband antenna, and send the first frequency band signal and the second frequency band signal to the multi-band transceiver;the multi-band transceiver comprises at least two first frequency band receiving branches and at least two second frequency band receiving branches, the at least two first frequency band receiving branches are configured to receive the first frequency band signal sent by the first multi-frequency coupler and the second multi-frequency coupler, and send the first frequency band signal to the signal processing module, and the ...

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Номер записи: 86
17-10-2013 дата публикации

Method and apparatus for authenticating password

Номер: US20130276100A1
Автор: Gun II Ma, Hyun Yi Yi, Jeong Hyun Yi, Si Wan Kim, Tae Jin Kim
Принадлежит: FOUNDATION OF SOONGSIL UNIVERSITY INDUSTRY COOPERATION

Provided is a method and apparatus for authenticating a password, wherein the method includes: generating at least one input grid cell into which a password is input from among a plurality of grid cells realized on a screen of a user terminal; and authenticating the password when the password is identical to a number of identification grid cells included in an authentication range predetermined based on the at least one input grid cell, wherein the identification grid cells are set to authenticate the password from among the plurality of grid cells. Accordingly, password information may be prevented from being exposed to a third person observer since a variable password is input whenever a user tries password authentication in a terminal.

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Номер записи: 87
24-10-2013 дата публикации

SYSTEM FOR ACCEPTING MAIL MATTER

Номер: US20130278947A1
Автор: CHOI Yong Hoon, Jung Hoon, Kim Dong-Ho, Kim Hyongook, Park Jong Heung, Song Jae Gwan
Принадлежит: Electronics and Telecommunications Research Institute

A system for accepting a mail matter is provided, which includes an image processing unit recognizing a mailing address; a weight measurement unit measuring a weight of the mail matter; a mailing address information input unit; a postage information storage unit; a postage settlement unit; an interface unit for selecting mailing addresses of an addresser and an addressee; a labeler printing the mailing addresses of the addresser and the addressee and a registered barcode on a label and attaching the label to the mail matter; a discharger discharging the mail matter; and an integrated control unit settling the postage through the postage settlement unit, attaching the selected mailing addresses of the addresser and the addressee and the registered barcode to the mail matter through the labeler, and discharging the mail matter through the discharger. 1. A system for accepting a mail matter comprising:an image processing unit recognizing a mailing address mentioned on the mail matter through photographing of the mail matter;a weight measurement unit measuring a weight of the mail matter;a mailing address information input unit receiving an input of the mailing address from an external storage device;a postage information storage unit storing postage information;a postage settlement unit settling the postage in association with a financial server;an interface unit displaying the mailing address input from the mailing address information input unit and the mailing address recognized by the image processing unit to make it possible to select mailing addresses of an addresser and an addressee from the mailing address input from the mailing address information input unit;a labeler printing the mailing addresses of the addresser and the addressee and a registered barcode on a label and attaching the label to the mail matter;a discharger discharging the mail matter to which the label is attached through the labeler; andan integrated control unit settling the postage through ...

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Номер записи: 88
24-10-2013 дата публикации

SYSTEM AND METHOD FOR IMPLEMENTING A SINGLE CHIP HAVING A MULTIPLE SUB-LAYER PHY

Номер: US20130279551A1
Автор: Fujimori Ichiro, Hoang Tuan, Longo Lorenzo, Tan Ben
Принадлежит:

A system and method are disclosed for supporting 10 Gigabit digital serial communications. Many of the functional components and sublayers of a 10 Gigabit digital serial communications transceiver module are integrated into a single IC chip using the same CMOS technology throughout the single chip. The single chip includes a PMD transmit/receive CMOS sublayer, a PMD PCS CMOS sublayer, a XGXS PCS CMOS sublayer, and a XAUI transmit/receive CMOS sublayer. The single chip supports both 10 Gigabit Ethernet operation and 10 Gigabit Fibre Channel operation. The single chip interfaces to a MAC, an optical PMD, and non-volatile memory. 1. A single-chip multi-sublayer PHY to support 10 Gigabit digital serial communications , said single-chip comprising:a Physical Media Dependent (PMD) transmit/receive Complementary Metal Oxide Semiconductor (CMOS) sublayer supporting at least 10 Gigabit Ethernet operation and10 Gigabit Fibre Channel operation, wherein said PMD transmit/receive CMOS sublayer comprises a PMD transmitter and a PMD receiver; anda 10 Gigabit Attachment Unit Interface (XAUI) transmit/receive CMOS sublayer supporting at least 10 Gigabit Ethernet operation and 10 Gigabit Fibre Channel operation, wherein said XAUI transmit/receive CMOS sublayer comprises a XAUI transmitter and a XAUI receiver,wherein said PMD transmitter and said XAUI transmitter are operable to switch between at least one internally generated reference clock and at least one externally generated reference clock to support the 10 Gigabit digital serial communications based upon an asynchronous mode or synchronous mode, wherein said single-chip operates in said synchronous mode using said at least one internally generated reference clock and said single-chip operates in said asynchronous mode using said at least one externally generated reference clock.2. The single-chip of claim 1 , wherein said PMD transmit/receive CMOS sublayer and said XAUI transmit/receive CMOS sublayer comprise 0.13 micron CMOS ...

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Номер записи: 89
24-10-2013 дата публикации

CIRCUIT AND TRANSMITTER FOR REDUCING TRANSMITTER GAIN ASYMMETRY VARIATION

Номер: US20130279630A1
Автор: FONG Neric, LU Chao, Xu Bing
Принадлежит: MEDIATEK SINGAPORE PTE. LTD.

The present invention provides for a circuit with slicing wherein a gain asymmetry variation is decreased across the plurality of mixer slices. In one or more embodiments, a calibration unit can be provided to determine the characteristics of gain asymmetry variation; and a digital compensation unit can be provided to adjust the gain of the circuit over frequency. 1. A circuit comprising:means for providing a consistent system transfer function of gain of the circuit; anda plurality of mixer slices coupled to the providing means, wherein a gain asymmetry variation is decreased across all of the plurality of mixer slices.2. The circuit of claim 1 , wherein the providing means comprises a plurality of RC filter slices and each of the plurality of RC filters slice coupled to a one of the plurality of mixer slices.3. The circuit of claim 1 , further comprising a calibration unit arranged to determine the characteristics of gain asymmetry.4. The circuit of claim 3 , further comprising a digital compensation unit arranged to adjust the gain of the circuit over frequency.5. The circuit of claim 1 , being operative as a transmitter.6. The circuit of claim 1 , being operative as a receiver.7. The circuit of claim 1 , wherein the system transfer function comprises an alternating current (AC) response of the circuit over gain.8. The circuit of claim 1 , wherein an input signal is sliced at a source that acts as either a voltage source or a current source.9. The circuit of claim 8 , wherein the slicing is a parallel configuration; and an input impedance on each of the mixer slices is scaled up by N claim 8 , where N is the number of mixer slices.10. The circuit of claim 1 , wherein the system transfer function is consistent over temperature.11. A transmitter comprising:a plurality of filter slices;a plurality of mixer slices, wherein each of the plurality of mixer slices coupled to one of the plurality of filter slices, and a gain asymmetry variation is decreased across all of ...

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Номер записи: 90
24-10-2013 дата публикации

METHOD AND APPARATUS FOR CALIBRATING A COMMUNICATION DEVICE

Номер: US20130281032A1
Автор: Boire Daniel, Greene Matthew, Manssen Keith
Принадлежит:

A system that incorporates teachings of the present disclosure may include, for example, a computer-readable storage medium having computer instructions to perform actual measurements of one or more performance parameters of a communication device according to a subset of tuning states of a tunable matching network operable in a communication device, determine estimated measurements of the one or more performance parameters of the communication device for a portion of the tuning states not included in the subset of tuning states according to the actual measurements, identify a data set for each of the one or more performance parameters from at least portions of the tuning states and the actual and estimated measurements, and determine from at least a portion of the date sets one or more tuning states that achieve at least one desirable performance characteristic of the communication device. Additional embodiments are disclosed. 1. A communication device , comprising:an antenna;a transceiver;a tunable matching network coupled with the antenna and the transceiver, the tunable matching network including at least one variable reactance element;a memory to store instructions; anda processor coupled to the memory, wherein execution of the instructions by the processor causes the processor to perform operations comprising:selecting a subset of tuning states for the tunable matching network;performing actual measurements of a plurality of performance parameters of the communication device according to the subset of tuning states;determining estimated measurements of the plurality of performance parameters for at least a portion of the tuning states not included in the subset of tuning states based on the actual measurements of the plurality of performance parameters;identifying data sets for the plurality of performance parameters from the subset of tuning states and the actual and estimated measurements; anddetermining from the data sets one or more tuning states of the ...

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Номер записи: 91
31-10-2013 дата публикации

Media Processing Device, Media Processing System, and Control Method of a Media Processing Device

Номер: US20130285798A1
Автор: Toshiaki Koike
Принадлежит: Seiko Epson Corp

Overwriting information that was correctly written to an IC tag that can communicate wirelessly but is not the IC tag on the medium intended to be processed is prevented so that the wrong information is not stored in the IC tag. When writing write data including uniquely assigned tag ID information to an IC tag ends correctly, the system controller 35 of the media processing device 2 stores information indicating that writing the IC tag was completed. When writing write data to an IC tag, the system controller 35 reads the tag ID information and determines if information matching the read tag ID information is included in the stored tag ID information. If matching information is found, the system controller 35 prohibits writing to the IC tag.

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Номер записи: 92
31-10-2013 дата публикации

Electronic device comprising signal receiving unit

Номер: US20130286605A1
Автор: Hong Li
Принадлежит: Hon Hai Precision Industry Co Ltd, Hongfujin Precision Industry Shenzhen Co Ltd

An electronic device includes a housing having a bottom wall and a front sidewall slantingly extending from the bottom wall, a circuit board received in the housing and parallel to the bottom wall, a sensor window cover secured to the front sidewall, a signal receiving unit secured to the circuit board and corresponding to the sensor window cover, and a supporting mechanism secured to the circuit board. The supporting mechanism supports the signal receiving unit to slant toward the sensor window cover.

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Номер записи: 93
31-10-2013 дата публикации

TRANSCEIVER AND VOLTAGE CALIBRATION METHOD THEREOF

Номер: US20130288614A1
Автор: Wu Chien-Ming
Принадлежит: REALTEK SEMICONDUCTOR CORPORATION

A transceiver and a voltage calibration method thereof are provided. The transceiver includes a transmitting circuit, a receiving circuit, and a processing circuit. The transmitting circuit generates a transmitting voltage. The receiving circuit, which is electrically connected to the transmitting circuit, receives a reference voltage and the transmitting voltage to generate a reference signal, and a measurement signal respectively. The processing circuit, which is electrically connected to the transmitting circuit and receiving circuit, calibrates the transmitting voltage according to the reference signal and the measurement signal. 1. A transceiver , comprising:a transmitting circuit, being configured to generate a transmitting voltage;a receiving circuit, being electrically connected to the transmitting circuit, and being configured to receive a reference voltage and the transmitting voltage respectively and generate a reference signal according to the reference voltage and a measurement signal according to the transmitting voltage; anda processing circuit, being electrically connected to the transmitting circuit and the receiving circuit, and being configured to calculate a calibration value according to the reference signal and the measurement signal and calibrate the transmitting voltage according to the calibration value.2. The transceiver of claim 1 , wherein the transmitting circuit comprises a variable current source claim 1 , the transmitting circuit generates the transmitting voltage according to the variable current source claim 1 , and the processing circuit adjusts the variable current source according to the calibration value so as to calibrate the transmitting voltage.3. The transceiver of claim 1 , further comprising a switch set electrically connected to the receiving circuit and the transmitting circuit claim 1 , wherein the receiving circuit respectively receives the reference voltage and the transmitting voltage via the switch set.4. The ...

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Номер записи: 94
31-10-2013 дата публикации

Semiconductor Device

Номер: US20130288619A1
Автор: Kato Kiyoshi, KOYAMA Jun
Принадлежит:

An object is to achieve low power consumption and a long lifetime of a semiconductor device having a wireless communication function. The object can be achieved in such a manner that a battery serving as a power supply source and a specific circuit are electrically connected to each other through a transistor in which a channel formation region is formed using an oxide semiconductor. The hydrogen concentration of the oxide semiconductor is lower than or equal to 5×10(atoms/cm). Therefore, leakage current of the transistor can be reduced. As a result, power consumption of the semiconductor device in a standby state can be reduced. Further, the semiconductor device can have a long lifetime. 1an antenna;a battery supplying power supply voltage;a demodulation circuit connected to the antenna;a power control circuit connected to the demodulation circuit; anda signal processing portion connected to the demodulation circuit, the power control circuit, and the battery,wherein the signal processing portion comprises a transistor, and{'sup': 19', '3, 'wherein a channel formation region of the transistor comprises an oxide semiconductor with a hydrogen concentration of lower than or equal to 5×10atoms/cm.'}. A semiconductor device comprising: This application is a continuation of U.S. application Ser. No. 12/947,313, filed Nov. 16, 2010, now allowed, which claims the benefit of a foreign priority application filed in Japan as Serial No. 2009-265594 on Nov. 20, 2009, both of which are incorporated by reference.The present invention relates to a semiconductor device, in particular, to a semiconductor device having a wireless communication function.Note that a semiconductor device in this specification refers to all electronic devices which can function by utilizing semiconductor characteristics, and electro-optical devices, semiconductor circuits, and electronic devices are all semiconductor devices.Semiconductor devices having wireless communication functions for transmitting ...

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Номер записи: 95
07-11-2013 дата публикации

Display electronic tagging and setting management method thereof

Номер: US20130292463A1
Автор: Chao-Chin Chen
Принадлежит: Anica Corp

A display electronic tagging and a setting management method thereof are provided. The display electronic tagging comprises a wireless RF module, a display, an encapsulant and a bar code. The wireless RF module is used for receiving a wireless RF signal. The display is electrically connected to the wireless RF module, and used for showing a price of a product. The encapsulant encapsulates the wireless RF module and the display, wherein the display is exposed form the encapsulant. The bar code is located at the encapsulant. A setting module pairs the bar code and the wireless RF module according to a barcode identification signal and a RF identification signal, such that the wireless RF module and the barcode together correspond to the same product.

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Номер записи: 96
21-11-2013 дата публикации

Encoded information reading terminal configured to pre-process images

Номер: US20130306736A1
Автор: Daniel Yeakley
Принадлежит: Honeywell International Inc

An encoded information reading (EIR) terminal can comprise a microprocessor, a memory, and an EIR device including a two-dimensional imager. The EIR device can be configured to output raw message data containing an encoded message and/or outputting a decoded message corresponding to an encoded message. The EIR terminal can be configured, responsive to acquiring an image containing decodable indicia, to pre-process the acquired image and transmit the pre-processed image to an external decoding computer for decoding the decodable indicia.

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Номер записи: 97
21-11-2013 дата публикации

Transmitter with Quantization Noise Compensation

Номер: US20130308725A1
Автор: GUSTAVSSON Ulf, THOREBÄCK Johan
Принадлежит:

The invention discloses a transmitter comprising a pulse encoder for creating pulses from the amplitude of an input signal to the transmitter, a compensation signal generator for cancelling quantization noise caused by the pulse encoder, a mixer or I/Q modulator for mixing an output of the pulse encoder with the phase of an input signal to the transmitter and an amplifier for creating an output signal from the transmitter. In the transmitter, a control signal (C) for controlling a function of the amplifier comprises an output signal from the compensation signal generator, and an input signal to the amplifier comprises an output from the mixer having been modulated to a desired frequency. 15-. (canceled)6. A transmitter comprising:a pulse encoder for producing pulses from the amplitude of a complex input signal to the transmitter;a compensation signal generator operatively coupled to the pulse encoder configured to cancel quantization noise caused by the pulse encoder to generate a first control signal;a first mixer or I/Q modulator operatively coupled to the pulse encoder for mixing an output of the pulse encoder with the phase of the input signal to the transmitter;a second mixer operatively coupled to the first mixer or I/Q modulator for converting the output from the first mixer or I/Q modulator to a desired frequency;an amplifier operatively coupled to the compensation signal generator and the second mixer and configured to provide an amplified signal, in which transmitter the first control signal controls a function of the amplifier, and an input signal to the amplifier comprises an output from the second mixer; anda band pass filter operatively coupled to an output of the amplifier,wherein the first control signal is configured by the compensation signal generator to control a maximum output amplitude of the amplifier or an impedance of an output matching network comprised in the amplifier such that the output of the band pass filter comprises a linear copy of ...

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Номер записи: 98
21-11-2013 дата публикации

HIGH-FREQUENCY SWITCH MODULE

Номер: US20130309984A1
Автор: UEJIMA Takanori
Принадлежит: MURATA MANUFACTURING CO., LTD.

A low pass filter connected between an individual port of a switch device and a high-frequency switch module attenuates the second harmonic and the third harmonic of a transmission signal input to a first transmission signal input terminal. Further, the inductances/capacitances of inductors and capacitors defining the low pass filter are set such that the phase of a harmonic signal generated by a power amplifier is different by 180° from the phase of a harmonic signal produced as a result of the low pass filter shifting the phase of a harmonic signal generated due to distortion in a switch device, in an end portion on the first transmission signal input terminal side. 1. (canceled)2. A high-frequency switch module comprising:a switch device that switches between a first individual port that is connected to a transmission signal input terminal of the high-frequency switch module and a second individual port that is connected to a reception output terminal of the high-frequency switch module so that either the first individual port or the second individual port is connected to a common port that is connected to an antenna connection terminal of the high-frequency switch module; anda filter circuit that includes an inductor connected in series between the transmission signal input terminal and the first individual port and that attenuates a harmonic signal of a transmission signal; whereinthe filter circuit is configured such that a phase of a distortion harmonic signal generated due to distortion in the switch device is different by 180° from a phase of the harmonic signal of the transmission signal at an end of the filter circuit nearer to the transmission signal input terminal.3. The high-frequency switch module according to claim 2 , wherein an electrical length of the filter circuit from an end of the filter circuit nearer to the first individual port to an end of the filter circuit nearer to the transmission signal input terminal is ½ of a wavelength of the ...

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Номер записи: 99
28-11-2013 дата публикации

Display device having enhanced visibility and mobile terminal using the same

Номер: US20130314643A1
Автор: Dongseop Lee
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A display device having enhanced visibility and a mobile terminal including the same are provided. The display device includes a liquid crystal display panel for displaying a predetermined image by selectively transmitting incident light, a backlight unit for providing light for driving the liquid crystal display panel, a diffraction sheet disposed between the liquid crystal display panel and the backlight unit to diffract light from an external light source passing through the liquid crystal display panel and to reapply the light toward a front surface direction from a rear surface of the liquid crystal display panel.

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Номер записи: 100