程控高阶有源滤波器的研究

Study of Program controled High Order Active Filter

本文提出了一种基于二阶巴氏滤波网络的程控高阶滤波器的实现方法，并具体给出了由单片机实现程控跟踪输入信号频率。

In this paper the author puts forward a method of program-controled high order filter based on second order Butterworth filter network,and designs fourth order low pass filter with its bandwidth be modulatted,its frequencey of inputting signal be program controled and traced by single chip′s.