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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 6. Отображено 6.
29-08-2017 дата публикации

Piezoelectric particle accelerator

Номер: US0009750124B2
Автор: Mark A. Kemp, Erik N. Jongewaard, Andrew A. Haase, Matthew Franzi, KEMP MARK A, JONGEWAARD ERIK N, HAASE ANDREW A, FRANZI MATTHEW, Kemp Mark A., Jongewaard Erik N., Haase Andrew A., Franzi Matthew
Принадлежит: The Board of Trustees of the Leland Stanford Junior University, UNIV LELAND STANFORD JUNIOR

A particle accelerator is provided that includes a piezoelectric accelerator element, where the piezoelectric accelerator element includes a hollow cylindrical shape, and an input transducer, where the input transducer is disposed to provide an input signal to the piezoelectric accelerator element, where the input signal induces a mechanical excitation of the piezoelectric accelerator element, where the mechanical excitation is capable of generating a piezoelectric electric field proximal to an axis of the cylindrical shape, where the piezoelectric accelerator is configured to accelerate a charged particle longitudinally along the axis of the cylindrical shape according to the piezoelectric electric field.

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Номер записи: 1
17-11-2016 дата публикации

Piezoelectric Particle Accelerator

Номер: US20160338186A1
Автор: Mark A. Kemp, Erik N. Jongewaard, Andrew A. Haase, Matthew Franzi, KEMP MARK A, JONGEWAARD ERIK N, HAASE ANDREW A, FRANZI MATTHEW, Kemp Mark A., Jongewaard Erik N., Haase Andrew A., Franzi Matthew
Принадлежит:

A particle accelerator is provided that includes a piezoelectric accelerator element, where the piezoelectric accelerator element includes a hollow cylindrical shape, and an input transducer, where the input transducer is disposed to provide an input signal to the piezoelectric accelerator element, where the input signal induces a mechanical excitation of the piezoelectric accelerator element, where the mechanical excitation is capable of generating a piezoelectric electric field proximal to an axis of the cylindrical shape, where the piezoelectric accelerator is configured to accelerate a charged particle longitudinally along the axis of the cylindrical shape according to the piezoelectric electric field. 1) A particle accelerator comprising:a) a piezoelectric accelerator element, wherein said piezoelectric accelerator element comprises a hollow cylindrical shape; andb) an input transducer, wherein said input transducer is disposed to provide an input signal to said piezoelectric accelerator element, wherein said input signal induces a mechanical excitation of said piezoelectric accelerator element, wherein said mechanical excitation is capable of generating a piezoelectric electric field proximal to an axis of said cylindrical shape, wherein said piezoelectric accelerator is configured to accelerate a charged particle longitudinally along said axis of said cylindrical shape according to said piezoelectric electric field.2) The particle accelerator according to claim 1 , wherein said piezoelectric accelerator element comprises a material selected from the group consisting of Lithium Niobate claim 1 , Lithium Tantalate claim 1 , Quartz claim 1 , and Lead Zirconate Titanate.3) The particle accelerator according to claim 1 , wherein said piezoelectric accelerator element comprises a plurality of said hollow tubes claim 1 , wherein said plurality of hollow tubes are configured in an arrangement selected from the group consisting of a monolithic claim 1 , single hollow ...

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Номер записи: 2
07-03-2019 дата публикации

Piezoelectric Transmitter

Номер: US20190074578A1
Автор: Franzi Matthew A., Jongewaard Erik N., Kemp Mark A., Nanni Emilio A.
Принадлежит:

A piezoelectric dipole transmitter is provided that includes a piezoelectric element comprising a mechanical resonance frequency, an insulating support disposed at a midpoint of the piezoelectric element, an external capacitance actuator driver, and an external capacitance actuator disposed proximal to one end of the piezoelectric element, where the capacitance actuator is driven by the external capacitance actuator driver to output a capacitive drive signal excites a length-extensional acoustic mode of the piezoelectric element to resonate at a piezoelectric element resonance frequency, where the piezoelectric element radiates energy as an electric dipole. 1) A piezoelectric dipole transmitter , comprising:a) a piezoelectric element comprising a mechanical resonance frequency;b) an insulating support disposed at a midpoint of said piezoelectric element;c) an external capacitance actuator driver; andd) an external capacitance actuator disposed proximal to one end of said piezoelectric element, wherein said capacitance actuator is driven by said external capacitance actuator driver to output a capacitive drive signal excites a length-extensional acoustic mode of said piezoelectric element to resonate at a piezoelectric element renonance frequency, wherein said piezoelectric element radiates energy as an electric dipole.2) The piezoelectric dipole transmitter of claim 1 , wherein said piezoelectric element comprises a cylindrical piezoelectric rod claim 1 , a cuboid rod claim 1 , or a shape that resonates in said length-extension mode.3) The piezoelectric dipole transmitter of claim 1 , wherein said external capacitance actuator comprise a plurality of concentric capacitor rings claim 1 , or an external conductor having a controllable capacitance-to-ground that are disposed proximal to one end of said piezoelectric element.4) The piezoelectric dipole transmitter of claim 1 , wherein said piezoelectric radiating element has an output signal voltage in a range of at ...

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Номер записи: 3
28-03-2019 дата публикации

Piezoelectric Transmitter

Номер: US20190097119A1
Автор: Franzi Matthew A., Haase Andrew A., Jongewaard Erik N., Kemp Mark A., Nanni Emilio A.
Принадлежит:

A piezoelectric dipole transmitter is provided that includes a piezoelectric element, an insulating support disposed at a midpoint of said piezoelectric element, or along the piezoelectric element, an external capacitance driver, and an external modulation capacitance disposed proximal to a first end of the piezoelectric element, where the driver capacitance is driven by a signal appropriate to excite a length-extensional acoustic mode of the piezoelectric element, where the piezoelectric element resonates at a piezoelectric element resonance frequency to radiate energy as an electric dipole. 1) A piezoelectric dipole transmitter , comprising:a) a piezoelectric element;b) an insulating support disposed at a midpoint of said piezoelectric element, or along said piezoelectric element;c) an external capacitance driver; andd) an external modulation capacitance disposed proximal to a first end of said piezoelectric element, wherein said driver capacitance is driven by a signal appropriate to excite a length-extensional acoustic mode of said piezoelectric element, wherein said piezoelectric element resonates at a piezoelectric element resonance frequency to radiate energy as an electric dipole.2) The piezoelectric dipole transmitter of claim 1 , wherein said piezoelectric element comprises a cylindrical piezoelectric rod claim 1 , a cuboid rod claim 1 , or a shape that resonates in said length-extension acoustic mode.3) The piezoelectric dipole transmitter of claim 1 , wherein said external modulation comprises a plurality of concentric capacitor rings claim 1 , or an external conductor having a controllable capacitance-to-ground.4) The piezoelectric dipole transmitter of claim 1 , wherein said piezoelectric element comprises at least an n=2 vibration mode claim 1 , wherein a displacement or the piezoelectric element comprises essentially near zero-displacement at a center of said piezoelectric element.5) The piezoelectric dipole transmitter of claim 1 , wherein said ...

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Номер записи: 4
07-08-2014 дата публикации

Pulsed Depressed Collector

Номер: US20140217885A1
Автор: Kemp Mark A.
Принадлежит:

A high power RF device has an electron beam cavity, a modulator, and a circuit for feed-forward energy recovery from a multi-stage depressed collector to the modulator. The electron beam cavity include a cathode, an anode, and the multi-stage depressed collector, and the modulator is configured to provide pulses to the cathode. Voltages of the electrode stages of the multi-stage depressed collector are allowed to float as determined by fixed impedances seen by the electrode stages. The energy recovery circuit includes a storage capacitor that dynamically biases potentials of the electrode stages of the multi-stage depressed collector and provides recovered energy from the electrode stages of the multi-stage depressed collector to the modulator. The circuit may also include a step-down transformer, where the electrode stages of the multi-stage depressed collector are electrically connected to separate taps on the step-down transformer. 1. A high power RF device comprising:an electron beam cavity having a cathode, an anode, and a multi-stage depressed collector;a modulator configured to provide pulses to the cathode; anda circuit connected to the modulator and to electrode stages of the multi-stage depressed collector,wherein the circuit comprises a storage capacitor that dynamically biases potentials of the electrode stages of the multi-stage depressed collector and provides recovered energy from the electrode stages of the multi-stage depressed collector to the modulator.2. The device of wherein the circuit further comprises a step-down transformer.3. The device of wherein a high-voltage (primary) side of the step-down transformer is coupled to the multi-stage depressed collector claim 2 , wherein a low-voltage (secondary) side of the step-down transformer is coupled to the storage capacitor claim 2 , and wherein the storage capacitor is coupled to the modulator.4. The device of wherein the electrode stages of the multi-stage depressed collector are electrically ...

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Номер записи: 5
24-09-2019 дата публикации

Piezoelectric transmitter

Номер: US10424714B2
Автор: Andrew A. Haase, Emilio A. Nanni, Erik N. Jongewaard, Mark A. Kemp, Matthew A. Franzi
Принадлежит: Leland Stanford Junior University

A piezoelectric dipole transmitter is provided that includes a piezoelectric element, an insulating support disposed at a midpoint of said piezoelectric element, or along the piezoelectric element, an external capacitance driver, and an external modulation capacitance disposed proximal to a first end of the piezoelectric element, where the driver capacitance is driven by a signal appropriate to excite a length-extensional acoustic mode of the piezoelectric element, where the piezoelectric element resonates at a piezoelectric element resonance frequency to radiate energy as an electric dipole.

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Номер записи: 6