A distributed transducer system for functional electrical stimulation

Publication: Research - peer-reviewArticle in proceedings – Annual report year: 2001



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Implanted transducers for functional electrical stimulation (FES) powered by inductive links are subject to conflicting requirements arising from low link efficiency, a low power budget and the need for protection of the weak signals against strong RF electromagnetic fields. We propose a solution to these problems by partitioning the RF transceiver and sensor/actuator functions onto separate integrated circuits. By amplifying measured neural signals directly at the measurements site and converting them into the digital domain before passing them to the transceiver the signal integrity is less likely to be affected by the inductive link. Neural stimulators are affected to a lesser degree, but still benefit from the partitioning. As a test case, we have designed a transceiver and a sensor chip which implement this partitioning policy. The transceiver is designed to operate in the 6.78 MHz ISM band and consumes approximately 360 μW. Both chips were implemented in a standard 0.5 μm CMOS technology, and use a 3 V supply voltage.
Original languageEnglish
Title of host publicationProceedings on 8th IEEE International Conference on Electronics, Circuits and Systems
Publication date2001
ISBN (print)0-7803-7057-0
StatePublished - 2001
Event8th IEEE International Conference on Electronics, Circuits and Systems - Malta, Spain


Conference8th IEEE International Conference on Electronics, Circuits and Systems
SponsorIEEE CAS; MALTACOM; Air Malta; MITTS; Univ Malta

Bibliographical note

Copyright: 2000 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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