基于双环CCTA的双电路的实际问题研究:阻带的有限衰减

2013 8th International Conference on Electrical and Electronics Engineering (ELECO) Pub Date : 2013-11-01 DOI:10.1109/ELECO.2013.6713932

J. Jerabek, R. Sotner, Z. Kincl, T. Dostál, K. Vrba

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引用次数: 4

摘要

在这篇关于电流型有源滤波器的论文中，提出并论证了现代有源功能模块中被忽视的潜在问题。讨论的问题是多功能频率滤波器在阻带内的不理想转移。它是由电路中与有源元件的小信号参数(阻抗电平)有关的几种情况引起的。在某些情况下，它会导致寄生反馈和电路中的不良转移。以khn型滤波器为例，讨论了采用新颖的电流输送跨导放大器(CCTA)的问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Study of practical problems in two-loop CCTA based biquad: Finite attenuations in stop bands

Quite neglected and underlying problem of modern active functional blocks is presented and demonstrated in this contribution on a current-mode active filter. The discussed problem is an undesirable transfer in stop band of multifunctional frequency filters. It is caused by several occasions related to small-signal parameters of active elements (impedance levels) in the circuit. In some cases it leads to parasitic feedback and undesirable transfers in circuit. Problems are discussed on example with KHN-type filter where quite novel active element known as Current Conveyor Transconductance Amplifier (CCTA) is used.

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2013 8th International Conference on Electrical and Electronics Engineering (ELECO)

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