DocumentCode
1193184
Title
SC leapfrog filters without additional adder stages
Author
Fischer, G. ; Moschytz, G.S.
Volume
32
Issue
8
fYear
1985
fDate
8/1/1985 12:00:00 AM
Firstpage
853
Lastpage
856
Abstract
In an arbitrary SC leapfrog filter, additional adders or inverters must generally be introduced to perform the necessary signal inversions and summations. Thus an additional (third) amplifier per second-order resonator, or biquad, is required. In this paper, we present a simple method of eliminating these extra stages, so that the number of amplifiers and capacitors in the original biquad blocks remains unchanged.
Keywords
Switched-capacitor filters; Adders; Circuit synthesis; Filters; Fourier transforms; Integral equations; Lagrangian functions; Least squares approximation; Least squares methods; MOS capacitors; Newton method;
fLanguage
English
Journal_Title
Circuits and Systems, IEEE Transactions on
Publisher
ieee
ISSN
0098-4094
Type
jour
DOI
10.1109/TCS.1985.1085782
Filename
1085782
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