| 一种新颖的电压模式N阶CFA低通滤波器的系统设计 |
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| 引用本文： | 吴先明,刘慧,齐绍忠,何怡刚.一种新颖的电压模式N阶CFA低通滤波器的系统设计[J].电路与系统学报,2010,15(1). |
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| 作者姓名： | 吴先明 刘慧 齐绍忠 何怡刚 |
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| 作者单位： | 1. 吉首大学,物理科学与信息工程学院,湖南,吉首,416000;湖南大学,电气与信息工程学院,湖南,长沙,410082
2. 湖南大学,电气与信息工程学院,湖南,长沙,410082 |
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| 基金项目： | 国家自然科学基金资助(60876022);;国家杰出青年科学基金资助(50925727) |
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| 摘 要： | 提出了一种基于电流反馈放大器(CFA)的n阶电压模式多环反馈(multiple-loop feedback,简称MF)低通滤波器的系统设计方法,推导了系统的设计公式,利用该方法可导出n阶不同结构的低通滤波器,所产生的滤波器由n个CFA、n个电容、n个电阻构成。以三阶Butterworth低通滤波器为例阐述了设计过程,并用pspice进行仿真分析,设计和仿真结果表明,系统设计理论是正确的,设计方法是可行的。
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| 关 键 词： | 电压模式 多环反馈 电流反馈放大器 Butterworth低通滤波器 |
Novel systematic design of voltage-mode Nth-order CFA low-pass filter |
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| WU Xian-ming,LIU Hui,QI Shao-zhong,HE Yi-gang.Novel systematic design of voltage-mode Nth-order CFA low-pass filter[J].Journal of Circuits and Systems,2010,15(1). |
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| Authors: | WU Xian-ming LIU Hui QI Shao-zhong HE Yi-gang |
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| Institution: | 1. College of Physics Science and Information Engineering;Jishou University;Jishou 416000;China;2. College of Electrical and Information Engeering;Hunan University;Changsha 410082;China |
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| Abstract: | A systematic design method for nth-order voltage-mode multiple-loop feedback (MF) low-pass filter based on CFA is presented. The systematic design formula derivation is performed firstly. The nth-order low-pass filters with different structure are obtained by this method, which include n CFAs, n capacitors and n resistances. As an example, a new third-order Butterworth low-pass filter is designed by the systematic design method and simulated in PSPICE. The simulation results show that our systematic design ... |
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| Keywords: | voltage-mode multiple-loop feedback current feedback amplifier Butterworth low-pass filter |
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