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Применить Всего найдено 8. Отображено 8.
09-06-2015 дата публикации

Wideband LC voltage controlled oscillator

Номер: KR0101527291B1
Автор: 최재혁, 윤희인
Принадлежит: 국립대학법인 울산과학기술대학교 산학협력단

... 본 발명은 전압제어 발진기에 관한 것이다. 본 전압제어 발진기는, 주파수를 발진하는 LC 공진 회로와 발진 주파수를 증폭하는 증폭 회로를 포함하는 제1 회로부, 스위칭 저항 성분에 의한 전압 강하를 보상하는 회로와, 제1 회로부와 연결시 전체 트랜스 컨덕턴스를 증가시키기 위한 회로를 포함하는 제2 회로부, 및 제1 회로부와 제2 회로부의 연결을 단속하는 스위칭부를 포함한다. 본 발명에 따르면, 주파수 대역이 확장된 광대역 전압제어 발진기가 제공된다.

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Номер записи: 1
05-06-2015 дата публикации

WIDEBAND LC VOLTAGE CONTROLLED OSCILLATOR

Номер: KR1020150062038A
Автор: CHOI, JAE HYOUK, YOON, HEE IN
Принадлежит:

The present invention relates to a voltage controlled oscillator. The voltage controlled oscillator includes a first circuit part which includes an LC resonance circuit to oscillate a frequency and an amplification circuit to amplify an oscillating frequency, a second circuit part which includes a circuit which compensates a voltage drop due to a switching resistance element and a circuit which increases the whole transconductance in the connection of the first circuit part, and a switching unit which controls the connection between the first circuit part and the second circuit part. According to the present invention, provided is the wideband voltage controlled oscillator to increase a frequency band. COPYRIGHT KIPO 2015 ...

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Номер записи: 2
26-07-2018 дата публикации

INJECTION LOCKING-BASED CLOCK MULTIPLYING APPARATUS AND METHOD

Номер: KR1020180085164A
Автор: CHOI, JAE HYOUK, LEE, YONG SUN, YOON, HEE IN
Принадлежит:

The present invention relates to an injection locking-based clock multiplier. More particularly, frequency shifting is converted into a voltage value and is cumulatively integrated in a voltage domain to determine the frequency shifting and correct a unique frequency of a voltage controlled oscillator (VCO). A differential structure is used to solve a problem caused by a current mismatch in the cumulative integration in the voltage domain and to increase the accuracy of the determination of the frequency shifting. Accordingly, the present invention can reduce phase noise and spurious elements. COPYRIGHT KIPO 2018 (110) Generating VCO unique frequency shifting (120) Converting the frequency shifting into a voltage value (130) Integrating the voltage value (140) Determining the frequency shifting (150) Correcting a VCO unique frequency ...

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Номер записи: 3
28-08-2015 дата публикации

APPARATUS FOR PVT VARIATION CALIBRATION OF RING OSC BASED ON INJECTION LOCKING SYSTEM AND THE METHOD THEREOF

Номер: KR0101548256B1
Автор: 최재혁, 이용선, 윤희인
Принадлежит: 국립대학법인 울산과학기술대학교 산학협력단

... 인젝션 락킹 기반 링오실레이터의 피브이티 변화 교정을 위한 장치 및 방법이 개시된다. 본 발명은 기준클럭생성부에서 생성된 기준클럭을 입력받아 주입펄스를 생성하는 주입펄스생성기와, 상기 주입펄스생성기의 주입펄스를 입력받아 소정 주파수를 출력하는 제1의 링형태의 VCO와, 제2의 링형태의 VCO 및 상기 기준클럭생성부에서 생성된 기준클럭과 상기 제2의 VCO의 출력주파수(Fvco)를 입력받아 디지털 보정을 행하여 상기 제1 및 제2의 VCO 제어전압으로 입력하는 피드백회로를 포함하여 구성함으로써, PVT 변화에 대해 안정적인 체배된 주파수를 생성할 수 있다.

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Номер записи: 4
09-06-2016 дата публикации

PHASE GENERATOR BASED ON DELAY LOCKED LOOP CIRCUIT AND PHASE GENERATING METHOD

Номер: KR101628160B1
Автор: CHOI, JAE HYOUK, LEE, JEONG YOON, YOON, HEE IN
Принадлежит: UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)

The present invention relates to a phase generator based on a delay locked loop circuit and a phase generating method capable of preventing locking errors while realizing broadband by placing a delay timing on an optimal band depending on the result of comparing an input clock and an output clock. The phase generator comprises: a delay control unit for producing and outputting an oscillating control voltage based on the result of comparing a phase of an outer standard clock and feedback clock signals to the frequency; a course setting unit for setting a band region for locking errors based on preventing conditions; a regulator for adjusting a set voltage level corresponding to the band region of the course setting unit and outputting the same; and a voltage control delay line for converting and outputting a phase of at least one output clock and a voltage level based on the set voltage of the regulator and control voltage of the delay control unit. COPYRIGHT KIPO 2016 (10) Phase / frequency ...

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Номер записи: 5
08-02-2017 дата публикации

FREQUENCY DIVISION CIRCUIT

Номер: KR1020170014905A
Автор: KIM, HONG TEUK, TAK, GEUM YOUNG, SONG, SEONG SIK, CHOI, JAE HYOUK, LEE, YONG SUN, YOON, HEE IN
Принадлежит:

The present invention relates to a frequency division circuit capable of generating a pair of output signals with a duty ratio of 50% and an in (I)-phase/quadrature (Q)-phase relation. According to one embodiment of the present invention, the frequency division circuit comprises: a first divider dividing a frequency of an input signal with a duty ratio of 50% into halves to generate a first division signal with a duty ratio of 50% and a second division signal having a differential relation with the first division signal and a duty ratio of 50%; a second divider dividing a frequency of the first division signal into halves to generate an I-phase third division signal with a duty ratio of 50% and dividing a frequency of the second division signal into halves to generate a Q-phase fourth division signal with a duty ratio of 50%; a first corrector applying a first reset signal to the first divider when the first and the second division signal do not satisfy the differential relation; and a ...

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Номер записи: 6
27-04-2018 дата публикации

MULTI-CLOCK GENERATOR AND OPERATING METHOD THEREOF

Номер: KR101852832B1
Автор: CHOI, JAE HYOUK, YOON, HEE IN, PARK, SUN EUI
Принадлежит: UNIST(ULSAN NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY)

The present invention relates to a multi-clock generator. The multi-clock generator according to an embodiment of the present invention can comprise: an oscillator bank having a plurality of digital control oscillators; and one correction circuit which receives a control code sequentially output from the plurality of digital control oscillators and corrects a frequency of a signal output from the digital control oscillator through comparison with a reference signal. COPYRIGHT KIPO 2018 (20) Time-interleaving correction circuit (30) Injection input part (AA) Current K^th control code (BB) Updated K^th control code (CC) Oscillator bank (DD) Injection pulse ...

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Номер записи: 7
21-08-2018 дата публикации

인젝션 락킹 기반 클락 체배 장치 및 방법

Номер: KR0101890512B1
Автор: 최재혁, 이용선, 윤희인
Принадлежит: 울산과학기술원

... 인젝션 락킹 기반 클락 체배기에 연관된다. 보다 구체적으로 주파수 변이를 전압 값으로 변환하고, 전압 도메인에서 누적 적분하여 주파수 변이를 판별하고 VCO(Voltage Controlled Oscillator)의 고유 주파수를 교정한다. 전압 도메인에서의 누적 적분에 있어서 전류 불일치에 의한 문제를 해결하고 주파수 변이의 판별 정확도를 높이기 위해 디퍼렌셜 구조를 이용한다.

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Номер записи: 8