재구성 가능한 전하 샘플러 기반 고차 시간상 이동평균 필터의 구현 및 검증
Design and Verification of Reconfigurable Charge Sampler- Based High-Order Temporal Moving-Average Filter
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초록
재구성 가능한 전하 샘플러 기반 고차 시간상 이동평균 필터의 설계 및 검증을 수행하였다. 설계된 필터는 시간상 이동평균 방법을 이용함으로써 기존의 방식을 이용한 이동평균 필터에 비하여 큰 이득을 가지며, 다양한 크기(N) 및 차수(M)의 이동평균 기능을 지원한다. 이 필터는 샘플링 주파수뿐만 아니라, N과 M을 이용해서도 주파수 응답 특성을 조절할 수 있고, N과 M은 클락 패턴의 변화만으로 쉽게 조절되기 때문에 설계된 필터는 여러 모드를 지원하는 수신기에 적합하다. 설계된 필터는 전류 소모량을 최소화하기 위하여 반전기 기반 가변 트랜스컨덕턴스 증폭기들을 이용하였다. 65-nm CMOS 공정을 이용하여 N=2, M=3과 N=3, M=2인 이동평균을 지원하는 시간상 이동평균 필터를 설계 제작하였으며, 위의 특성들을 검증하였다
Abstract
A reconfigurable charge sampler-based high-order temporal moving-average (MA) filter is designed and verified. Compared to conventional MA filters, the designed filter has a higher gain by using temporal MA method. In addition, the filter is able to support variable MA sizes and MA orders. Frequency response of the filter can be controlled by changing not only the sampling frequency but also the MA size (N) and MA order (M). Since the N and M are easily controlled by changing the clock patterns, the filter is suitable for multimode receivers. This filter adopts inverter-based transconductance amplifiers in order to minimize current consumption. To verify above characteristics, a temporal MA filter that supports MA operations of (N=2, M=3) and (N=3, M=2) is fabricated using 65-nm CMOS technology.
참고문헌 (13)
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