一种基于平衡输出OTA多功能滤波器  

A Versatile Filter Based on Dual Output Transconductance Amplifiers

作　　者：曾菊员[1] 彭良玉[1] 韩英[2] 

机构地区：[1]湖南师范大学物理与信息学院,湖南长沙410081 [2]湖南师范大学工学院,湖南长沙410081

出　　处：《南昌大学学报（工科版）》2006年第2期144-146,154,共4页Journal of Nanchang University(Engineering & Technology)

基　　金：湖南省教育厅资助项目(04C347)

摘　　要：提出了一种新的基于平衡输出的运算跨导放大器(Operational Transconductance Amp lifier,OTA)的多功能滤波电路,它能实现一阶高通、低通、二阶高通、带通和低通滤波功能.电路结构简单,便于集成且与VLSI工艺兼容.比基于单输出OTA的滤波电路具有更好的高频特性.该滤波器可用于通信、电子测量与仪器仪表的信号处理.PSPICE仿真表明,所提出的电路是可行的.A new versatile filter based on dual output transconductance amplifiers is presented in this paper. The filter is proposed which implements the first order low-pass and high-pass transfer functions and the second order low-pass, high-pass and band-pass transfer functions. The proposed circuit has simple structure, excellent high-frequency performance. 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 results of PSPISE simulation demonstrate the feasibility of the proposed circuit.

关 键 词：电流模式电路 运算跨导放大器 多功能滤波器 

分 类 号：TN713[电子电信—电路与系统]