DocumentCode :
1162947
Title :
Continuous-time LMS adaptive recursive filters
Author :
Johns, David A. ; Snelgrove, W. Martin ; Sedra, Adel S.
Author_Institution :
Dept. of Electr. Eng., Toronto Univ., Ont., Canada
Volume :
38
Issue :
7
fYear :
1991
fDate :
7/1/1991 12:00:00 AM
Firstpage :
769
Lastpage :
778
Abstract :
An approach for implementing continuous-time adaptive recursive filters is presented. The resulting filters should be capable of operating on much higher signal frequencies than their digital counterparts since no sampling is required. With respect to implementation problems, the effects of DC offsets are investigated and formulas derived so that these effects can be estimated and reduced. It is shown that the DC offset performance is strongly affected by the choice of structure for the adaptive filter. Experimental results from a discrete prototype are given where accurate adaption is observed and DC offset effects are compared to theoretical predictions
Keywords :
adaptive filters; filtering and prediction theory; least squares approximations; DC offsets; LMS; continuous-time adaptive recursive filters; discrete prototype; signal frequencies; Adaptive filters; Analog circuits; Analog computers; Digital filters; Hardware; Laser sintering; Least squares approximation; Prototypes; Sampling methods; Signal processing;
fLanguage :
English
Journal_Title :
Circuits and Systems, IEEE Transactions on
Publisher :
ieee
ISSN :
0098-4094
Type :
jour
DOI :
10.1109/31.135748
Filename :
135748
Link To Document :
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