基于MO-OTA-C的n阶通用电流模式滤波器  

n-order universal current mode filter based on MO-OTA-C

作　　者：谭子尤[1] 梁平原[1] 唐圣学[1] 向晓燕[1] 

机构地区：[1]吉首大学物理科学与信息工程学院,湖南吉首416000

出　　处：《电子元件与材料》2008年第12期54-56,共3页Electronic Components And Materials

基　　金：湖南省教育厅科学研究资助项目(No.07C526)

摘　　要：以OTA-C为基本模块,在其输入端加入一个电流信号,使输出电流受其控制,然后利用多端输出(MO)的OTA-C实现n阶通用电流模式滤波器的设计。该滤波器能实现低通、高通、带通、带阻和全通功能,n阶滤波器仅需要n个OTA和n个电容,便于集成。以三阶Butterworth滤波器为例,进行低通、带通和高通仿真。理论分析与Spice仿真表明,所设计的滤波器结构正确可行。Using OTA-C as the basic template, its input was added a current signal to control output currents, then n-order universal current mode filter was designed using the multi-output OTA-C. The filter can be used to realize low-pass, high-pass, band-pass, notch and all-pass function. A n-order filter needs only n OTA and n capacitors of being grounded easy to integrate. For instance, 3 order Butterworth filter was progressed low-pass, band-pass and high-pass simulation, theoretical analysis and Spice simulation indicate that the designed structure of filter is correct and feasible.

关 键 词：滤波器 电流模式 运算跨导放大器 MO-OTA-C的n 阶通用电流模式滤波器 

分 类 号：TN713[电子电信—电路与系统]