一种设计开关电容滤波器的系统方法
A Systematic Method for Design of Switched Capacitor Filters
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摘要: 提出了一种开关电容滤波器(SCF)设计的系统方法,即利用线性变换原理和压控电源等效变换技术,可以模拟ARF滤波器直接设计成SCF;给出了7个设计SCF的基本积木块。该方法可成功设计各种SCF,特别适宜于带通和低通SCF的设计,并举例说明了该方法的优越性。Abstract: This paper proposes a method for the design of switched capacitor filters (SCF) from analogue ARF filters (ARF) via the line. transformation and the equivalent voltage-controlled sources transformation. Basic building blocks are describled for the design of any general SCF. The method suits the design of bandpass and lowpass SCF well. An example is given to illustrate the technique's efficiency.