双二次型有源滤波器的状态变量法设计

The design of biquad active filter with state variable method

从二阶滤波器的一个系统方框图出发 ,推导出三种传递函数 ,为了实现函数所表达的滤波功能 ,设计了使用三种不同的有源器件电路 。

Based on a system block diagram of biquad active filter,three transimission functions were dirivied.In order to realize the functions,three kinds of filter circuit were designed.The characteristics of each circuit were analyzed.