基于CCⅡ+/-的三输入单输出电流模式多功能二阶滤波器

Design of Multi-function Second-order Three Inputs One Output Current-mode Filter Based on CCⅡ+/-

提出了一种基于双输出第二代电流传送器的二阶多功能电流模式滤波器,该电路采用三输入单输出的形式,电路结构十分简单,仅有2个有源器件、2个电容和2个阻抗构成;这一结构可以实现高通、带通、低通、全通、带阻滤波器,且电容均接地。此外,所产生的电路具有很低的灵敏度。最后对所引入的第二代多输出电流传输器及提出的滤波器进行了PSpice仿真和理论计算。

This paper presents a circuit configuration of multi- function current- mode second order filter using two CCⅡ＋/-s （dual- output second generation current conveyors）. The circuit is very simple and only consists of two CCⅡ＋/-s and four RC passive components. Using this circuit structure, low- pass, band- pass, high - pass, all - pass and notch filters can be implemented. Simulations for different filters are carried out and the results are given.