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.
出处
《北京工业大学学报》
CAS
CSCD
北大核心
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)
关键词
多环反馈
第二代电流传输器
滤波器
multiple-loop feedback
second generation current conveyor
filter
