电流模式N阶CDBA-RC通用滤波器的系统设计  

A Systematic Design of Current-Mode Nth-Order CDBA-RC Universal Filter

作　　者：席燕辉[1] 李鸿[1] 彭良玉[2] 

机构地区：[1]长沙理工大学电气与信息工程学院,长沙410077 [2]湖南师范大学物理与信息学院,长沙410081

出　　处：《电子与信息学报》2007年第3期760-762,共3页Journal of Electronics & Information Technology

基　　金：湖南省教育厅(04C346)资助课题

摘　　要：5该文提出了利用电流差分缓冲放大器CDB A(the Current Differencing Buffered Amplifier)实现n阶电流模式滤波器的方法。基于信号流图给出了系统的设计公式,并举例设计了5阶Butterworth低通、高通及4阶Butterworth带通滤波器。PSPICE仿真表明,结果与理论分析完全吻合。该滤波器不仅电路结构简单,而且用的元件数目很少。A novel method for n-order current-mode filters using the Current Differencing Buffered Amplifier（CDBA） is presented. Based on the signal-flow-graph a systematic design formula is given in this papers. As examples, a new fifth-order butterworth low-pass, high-pass and fourth-order band-pass filters are realized. Simulation results from PSPICE are obtained to verify the theoretical analysis. The proposed filters have the characteristic of simple structure and less number of components.

关 键 词：电流差分缓冲放大器 电流模式 通用滤波器 

分 类 号：TN713[电子电信—电路与系统]