DocumentCode
1554443
Title
F&H filter: a novel ultra-low power discrete time filter
Author
Tavares, V. M Grade ; Principe, J.C. ; Harris, J.G.
Author_Institution
Dept. of Electr. & Comput. Eng., Florida Univ., Gainesville, FL, USA
Volume
35
Issue
15
fYear
1999
fDate
7/22/1999 12:00:00 AM
Firstpage
1226
Lastpage
1227
Abstract
A new technique for designing filters with long time constants in the discrete time domain is presented. The F&H (filter and hold) methodology halts the state of a continuous time filter every T seconds resulting in a filter implementation with time constants that can be controlled in three distinct ways: by the sampling period T, the duty cycle k=τ/T or the time constant of the continuous time filter prototype. The final filter can be constructed from a typical Gm-C technique with very low power consumption
Keywords
active filters; discrete time filters; low-pass filters; low-power electronics; signal sampling; time-domain synthesis; F&H filter; Gm-C technique; continuous time filter prototype; duty cycle; filter/hold methodology; long time constants; low power consumption; sampling period; ultra-low power discrete time filter;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19990856
Filename
790763
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