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성과물

특허 검색
구분 출원국
출원년도 ~ 키워드

상세정보

등록 가변 고차 베셀 저역 통과 필터

가변 고차 베셀 저역 통과 필터
이미지 확대
발명자
명승일, 임상규, 김광준, 이정찬
출원번호
10858925 (2004.06.01)
공개번호
20050134398 (2005.06.23)
등록번호
7049902 (2006.05.23)
출원국
미국
초록
A tunable high-order Bessel low pass filter which is applied to a multi-rate duobinary generation system of an optical communication system. The tunable Bessel low pass filter comprises a variable inductor circuit including a plurality of variable inductors connected in series between an input signal terminal and an output signal terminal and controlled respectively by corresponding inductance control signals, a variable capacitor circuit including a plurality of variable capacitors connected respectively between corresponding connection nodes of the plurality of variable inductors of the variable inductor circuit and a ground terminal and controlled respectively by corresponding capacitance control signals, and a variable capacitor/inductor controller for outputting the corresponding capacitance control signals to the variable capacitors of the variable capacitor circuit and the corresponding inductance control signals to the variable inductors of the variable inductor circuit on the basis of preset values according to a given data rate, respectively. When the data rate of an application system is changed, the tunable Bessel low pass filter controls its filtering characteristics most appropriately to the changed data rate, so as to extend its application range and enhance performance and efficiency of the application system.
KSP 제안 키워드
Application System, Capacitor circuit, Communication system, Control Signal, Enhance performance, Filtering characteristics, Generation system, Input signal, Low Pass Filter, Multi-rate, Variable Inductor, connected in series, data rate, high order, low pass, optical communication systems, optical communications, variable capacitor