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Frequency-bandwidth-tunable powerline notch filter for biopotential acquisition systems
C.-T. Ma1; P.-I. Mak1; M.-I. Vai1; P.-U. Mak1; S.-H. Pun1; W. Feng1; R.P. Martins1,2
2009-02-12
Source PublicationElectronics Letters
ISSN0013-5194
Volume45Issue:4Pages:197-198
Other Abstract

Presented is a novel powerline notch filter embeddable into a chopper-stabilised instrumentation amplifier for biopotential measurements. The frequency-translation property of the chopper enables the powerline notching to be indirectly implemented by two resonant zeros around the chopper frequency, resulting in substantial silicon area savings. Transistor-level implementation in 90nm CMOS using a pseudo-LC circuit topology with Q-enhancement demonstrates 50 to 60Hz frequency tunability, 25/41dB powerline rejection at 5/30Hz bandwidth, and 1000× relaxation of time constant under a 4kHz chopper frequency. 

DOI10.1049/el:20093704
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000263785200004
PublisherINST ENGINEERING TECHNOLOGY-IET, MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD SG1 2AY, ENGLAND
The Source to ArticleScopus
Fulltext Access
Citation statistics
Cited Times [WOS]:11   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
INSTITUTE OF MICROELECTRONICS
Corresponding AuthorP.-I. Mak
Affiliation1.Faculty of Science and Technology, University of Macau, China
2.Instituto Superior Te´cnico, TU of Lisbon, Portugal
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
C.-T. Ma,P.-I. Mak,M.-I. Vai,et al. Frequency-bandwidth-tunable powerline notch filter for biopotential acquisition systems[J]. Electronics Letters,2009,45(4):197-198.
APA C.-T. Ma.,P.-I. Mak.,M.-I. Vai.,P.-U. Mak.,S.-H. Pun.,...&R.P. Martins.(2009).Frequency-bandwidth-tunable powerline notch filter for biopotential acquisition systems.Electronics Letters,45(4),197-198.
MLA C.-T. Ma,et al."Frequency-bandwidth-tunable powerline notch filter for biopotential acquisition systems".Electronics Letters 45.4(2009):197-198.
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