一种基于MOCCCII和CCII-实现的n阶低通滤波器

An n-Order Low-Pass Filter Based on MOCCCII and CCII-

提出了用信号流图法设计n阶基于多端输出的电流控制第二代电流传输器(current controlled sec-ond generation current conveyor with multiple outputs,简记为MOCCCII)和第二代电流传输器(the second genera-tion current conveyor,简称CCII)电流模式低通滤波器的方法.由该方法导出的滤波器所需元件较少,n阶滤波器仅需1个CCII-、n个MOCCCII和n个电容,所有电容均接地,便于集成且与VLSI工艺兼容.该滤波器可用于通信、电子测量与仪器仪表的信号处理.该文给出了2、3和4阶滤波器的设计实例,PSPISE仿真结果与理论分析相吻合,验证了该方法的可行性.

A new way to design n-order MOCCCII and CCⅡ- current-mode low-pass filter by signal flow graph is presented. The filter has some advantages such as fewer components, all the capacitors being grounded. The n-order filters only composed by one ccii- and n MOCCCIIs and capacitors. The circuit is integrated conveniently and is compatible with VLSI technology. The filter can be applied to signal processes of communication and electronic measure and instrument. The second,third and 4th-order filter, are designed. PSPISE simulation results are obtained to verify the theoretical analysis and to demonstrate its effectiveness.