Automatic tuning of quality factors for VHF CMOS filters
- 1 May 1990
- proceedings article
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 1147-1150
- https://doi.org/10.1109/iscas.1990.112323
Abstract
A VHF transconductance-C filter technique with automatic tuning of the quality factors and the cutoff frequency, based on a voltage controlled oscillator (VCO), is presented. The Q-tuning circuit is very simple and contains no signal carrying nodes, resulting in a well-controlled Q up to very high frequencies (100 MHz). A breadboard realization of the Q-tuning circuit gave good resultKeywords
This publication has 3 references indexed in Scilit:
- A 110MHz CMOS Transconductance-C Low-Pass FilterPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1989
- Linear CMOS transconductance element for VHF filtersElectronics Letters, 1989
- Design and performance of a fully integrated bipolar 10.7-MHz analog bandpass filterIEEE Journal of Solid-State Circuits, 1986