RC-Active Biquadratic Filter Sections with Two Operational Amplifiers

G. Götz; J. A. Nossek

doi:10.1515/FREQ.1978.32.5.140

RC-Active Biquadratic Filter Sections with Two Operational Amplifiers

Translated title of the contribution: RC-Active Biquadratic Filter Sections with Two Operational Amplifiers

G. Götz, J. A. Nossek

Siemens AG

Research output: Contribution to journal › Article › peer-review

Abstract

Two new second-order active filter sections, capable of realizing high pole-Q's, are presented. The first circuit is an advanced analog computer realization. The other network applies the allpass-loop principle. Design formulae are given. Both canonic niter sections offer low sensitivities and need only two operational amplifiers to realize the general biquadratic transfer function. They allow an economic realization of highly selective filters in a multiple feedback, as well as in a cascade arrangement. The qualities of the new circuits are demonstrated by an example.

Translated title of the contribution	RC-Active Biquadratic Filter Sections with Two Operational Amplifiers
Original language	English
Pages (from-to)	140-145
Number of pages	6
Journal	Frequenz
Volume	32
Issue number	5
DOIs	https://doi.org/10.1515/FREQ.1978.32.5.140
State	Published - 1978
Externally published	Yes

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RC-Active Biquadratic Filter Sections with Two Operational Amplifiers

Abstract

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