DocumentCode
933105
Title
A tunable filter using amplifier pole
Author
Swamy, M.N.S. ; Rao, K. Sankara
Author_Institution
Concordia University, Montreal, P.Q., Canada
Volume
63
Issue
1
fYear
1975
Firstpage
197
Lastpage
199
Abstract
A circuit consisting of two periodically operated switches, potentiometers, resistors, and compensated operational amplifiers, but not containing external capacitors, is proposed for the realization of a second-order bandpass and low-pass filter. The filter is electronically tunable and the natural frequency of the filter varies linearly with the width of the pulses controlling the FET switches.
Keywords
Band pass filters; Low pass filters; Operational amplifiers; Potentiometers; Pulse amplifiers; Resistors; Switched capacitor circuits; Switches; Switching circuits; Tunable circuits and devices;
fLanguage
English
Journal_Title
Proceedings of the IEEE
Publisher
ieee
ISSN
0018-9219
Type
jour
DOI
10.1109/PROC.1975.9719
Filename
1451649
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