RC有源滤波器CAD

本文报导了新研制的ＲＣ有源滤波器软件ＦＩＬＴ。它能根据用户指定的设计要求和选定的滤波器类型。自动确定阶数和零极点位置，分析并给出了频域的幅频和相频曲线及对价跃函数和冲击函数的时域响应特性；自动生成ＰＳＰＩＣＥ源文件，并直接用ＰＳＰＩＣＥ元件库中的运放进行特性模拟，ＦＩＬＴ不仅是有实用价值的工程设计软件，而且也是很好的计算机辅助教学软件。

THE COMPUTER AIDED DESIGN OF RC ACTIVE FILTERS

A new software used for RC active filter design is introduced. According to the inputinformation from the user, it can calculate the order of the filter and show the positions ofthe poles and zeros automatically. It can analysis the amplitude and phase frequency char-acteristics and the transient response to both step and impulse function as well. It can alsogive the corresponding circuit structure and PSPICE file. This program (FILT) is not onlya useful engineering software but also a computer aided instruction program.