二阶节有源RC滤波器的最佳电路形式

BEST CIRCUIT FORM OF SECOND-ORDER RC ACTIVE FILTERS

本文根据对3种二阶节有源RC滤波器理论分析的结果作了机助分析和实验,比较三种滤波器国ω_O的偏差和Q的灵敏度及偏差可见,CAB滤波器性能最佳。

This paper analyzes three kinds of active-RC biquads filters (SAB, GIC, CAB) by CAA and experiments. On the basis of theoretical analysis a conclusion is reached that CAB filter is the best of the three in ω_0 deviation, Q sensitivity and its deviation.