Abstract
The use of active elements in linear networks offers new degrees of freedom to both network and system designers. A comprehensive report on the Biquad, an active topology based on analog computer concepts, is given. We describe the electrical characteristics of the Biquad that make it a manufacturable realization for precision networks. Analysis and experimental data describe the dependence of Biquad performance on nonideal operational amplifiers. Compensation techniques are derived which allow high-Qoperation at several hundred kilohertz with existing devices. The 8-V rms signal capacity and 80-dB dynamic range of the voice-frequency Biquad are illustrated.
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Authors
Lee C. Thomas
Topics
Analog and Mixed-Signal Circuit DesignRadio Frequency Integrated Circuit DesignAdvancements in PLL and VCO Technologies
About
PublishedJan 1, 1971
TypeArticle
Citations233
References4