利用电流传送器CCII实现的有源polyphase滤波器设计，ORCAD软件仿真的，可以直接打开，运行-Use of current conveyor CCII achieve active polyphase filter design, ORCAD software simulation, you can directly open and run

基于HSPICE 的开关电容滤波器仿真程序，直接用HSPICE软件打开即可-HSPICE-based switched capacitor filter simulation program can be opened directly by HSPICE software