有源C带阻滤波器
AN ACTIVE C NOTCH FILTER
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摘要: 本文提出了一种新的由两个运放、五个电容组成的有源C带阻滤波器,该滤波器能实现低通、低通带阻、带通、对称带阻网络功能,其极点参数0和Q可以独立调整。文中不但给出了实验结果和计算实例,还分析了在0点衰减为有限值的原因。
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关键词:
- 滤波器; 有源滤波器; 有源C带阻滤波器
Abstract: A new active C notch filter circuit with two operational amplifiers and five capacitors is presented. The circuit can fulfil the second-order lowpass, band-pass, band-stop and symmetrical band-stop functions. Its pole parameters Q and (0 can be adjusted independently. Design examples and experimental results are given. It is investigated why the attenuation is not infinite at notch frequency 0. -
R. Schaumann, J.R. Brand, Proc IEE. Part G; 128(1981), 19-24.[2]石田,村冈等,电子通信学会论文志,J68-A(11), 1985,1269-1270.[3]赵述江,电子学报,1984年,第1期,第64-70页.[4]石田,副井等,电子通信学会论文志,J68-A(7), 1985,700-701. -
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