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특허 검색
구분 출원국
출원년도 ~ 키워드

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등록 주파수 합성기

주파수 합성기
이미지 확대
발명자
민병훈, 유현규
출원번호
12626554 (2009.11.25)
공개번호
20100134160 (2010.06.03)
등록번호
8115525 (2012.02.14)
출원국
미국
협약과제
08MB3200, 차세대 무선 융합 단말용 Advanced Digital RF 기술 개발, 유현규
초록
There is provided a frequency synthesizer. The frequency synthesizer includes a frequency oscillator adjusting an output frequency according to a control bit; a programmable divider having a preset minimum division ratio, the programming divider dividing the output frequency of the frequency oscillator at a variable division ratio; a counter unit receiving an output signal of the programmable divider and a reference frequency to generate a count value by counting rising edges of the output signal of the programmable divider during one cycle of the reference frequency, and outputting a first hit signal when the count value is 1, and outputting a second hit signal when the count value is 2; and a phase detection unit outputting a control bit obtained by subtracting a fractional error of the output signal of the programmable divider from a fractional error at a locked phase obtained from the count value and the reference frequency.
KSP 제안 키워드
Frequency synthesizer, Output frequency, Phase Detection, Reference frequency, one cycle
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