CCII的n阶电压模式低通滤波器的系统设计  

Systematic Design of nth-order Voltage-mode Low-pass Filters Based on CCII

作　　者：王春华[1] 沈光地[2] 

机构地区：[1]湘潭大学信息工程学院,湖南湘潭411105 [2]北京工业大学电子信息与控制工程学院北京光电子技术实验室,北京100022

出　　处：《北京工业大学学报》2003年第4期428-432,共5页Journal of Beijing University of Technology

基　　金：国家重点基础研究发展规划基金资助项目(G20000683-02);湖南省教育厅科技基金资助项目(01C080)

摘　　要：提出了一种n阶多环反馈(multiple-loop feedback,简称MF)CCII(第二代电流传输器)电压模式滤波器的系统总体设计理论和设计方法.利用该理论和方法可产生出多种不同结构的多环反馈低通滤波器.所产生的滤波器由2n个CCII、n个电容及2n个电阻构成.由于输入信号仅从CCII的y端输入,所以所产生的滤波器具有高输人阻抗.并且所有的RC元件均接地,该电路便于集成.给出了截止频率为1 MHz的四阶巴特沃思滤波器的设计举例及PSPICE计算机模拟结果.The authors presents a systematic theory and method of designing nth-order CCII (second generation current conveyor) filter with multiple-loop feedback. Various kinds of filter structures can be produced according to this theory and method. The produced filter is constructed by 2n CCIIs, n capacitors and 2n resistors. Because the input signal is only joint to circuit from y terminal of CCII, the filters have very high input impedance. Because all the RC elements are connected to ground, the filters are integrated conveniently. The design example of 4th-order Butterworth filter whose cutoff frequency is 1 MHz and its computer PSPICE simulation results are also given.

关 键 词：多环反馈 第二代电流传输器 滤波器 

分 类 号：TN713.4[电子电信—电路与系统]