一种基于CFA实现的n阶滤波器  

A n-order filter based on CFA implementation

作　　者：曾菊员[1] 彭良玉[2] 

机构地区：[1]罗定职业技术学院电子信息系,广东罗定527200 [2]湖南师范大学物理与信息学院,湖南长沙410081

出　　处：《电气传动自动化》2016年第2期55-57,46,共4页Electric Drive Automation

基　　金：广东省教育厅基金项目(20120302042)

摘　　要：提出了以一种采用信号流图为基本原理,基于阻抗元件与电流反馈放大器实现的n阶电流模式滤波器。只需变换阻抗元件,无需改变滤波电路结构,就可以实现高通与低通滤波功能。设计了一个四阶滤波器,并对此电路进行PSPICE仿真,仿真结果与理论分析相一致,证明了提出的方法是可行的。Based on the signal flow graph as the foundation,the n-order filter realization method based on CFA implementation is proposed. The structure of realizing the functions of the n-order filter by using CFA and impedance element is given. The filter can realize the low-pass and the high-pass filtering functions by only transforming the impedance components without changing its structure. It is also given that taking the 4-order filter as the simulation example. The PSPICE simulation results agree with the theoretical analysis,which verifies the feasibility of the proposed method.

关 键 词：电流反馈放大器 信号流图 N阶滤波器 电流模电路 

分 类 号：TN713[电子电信—电路与系统]