DocumentCode
923594
Title
Highpass and bandpass 2nd-order switched-capacitor filters
Author
Mohan, P. V Ananda ; Ramachandran, V. ; Swamy, M.N.S.
Author_Institution
Concordia University, Department of Electrical Engineering, Montreal, Canada
Volume
130
Issue
1
fYear
1983
fDate
2/1/1983 12:00:00 AM
Firstpage
1
Lastpage
6
Abstract
Highpass and bandpass switched-capacitor filters derived from Sallen and Key, and Bach´s RC active highpass filters have been described. The bandpass filters have been shown to be realisable by simple modification of the highpass filters, using Laker´s method of obtaining 1st-order lowpass filters from 1st-order highpass filters under certain input conditions. A single amplifier version of a recently described bandpass filter has also been discussed. All the realisations have been compared regarding the capacitor spread required to realise desired pole frequency and pole Q for given sampling frequency and optimised for minimal capacitor spread.
Keywords
active filters; band-pass filters; high-pass filters; switched capacitor networks; switched filters; 1st-order lowpass filters; 2nd-order; Laker´s method; RC active highpass filters; bandpass; capacitor spread; pole Q; pole frequency; sampling frequency; single amplifier version; switched-capacitor filters;
fLanguage
English
Journal_Title
Electronic Circuits and Systems, IEE Proceedings G
Publisher
iet
ISSN
0143-7089
Type
jour
DOI
10.1049/ip-g-1:19830001
Filename
4645570
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