開關電容濾波器的分析與設計

The Analysis and Design of Switched-Capacitor Filters

劉熙海(Hsi-Hai Liu) ； 楊志祥(Chih-Hsiang Yang) ； 徐申勇(Shen-Yung Hsu)

《華岡工程學報》 19期 (2005/06) Pp. 107-110

https://doi.org/10.29987/CCUHKJE.200506.0011

摘要

主動式濾波器有兩個特性使得它們不能做成積體電路的形式：一是它需要大的電容值，二是需要準確的RC時間常數。因此一直有人在找尋濾波器的設計方法，使得它們能夠更自然的適合於IC製作。本文將介紹一種有效的設計方法，而此電路在現今的確是開關電容濾波器電路中最好的。

並列摘要

The active-RC filter circuits have two properties that make their production in monolithic IC form difficult: these are the need for large-valued capacitors and the requirement of accurate RC time constants. The search therefore continued for a method of filter design that would lend itself more naturally to IC implementation. In this paper we shall introduce an efficient method. At the time of this writing it appears to be the best contender for the task.