A distributed transducer system for functional electrical stimulation

Gunnar Gudnason, Jannik Hammel Nielsen, Erik Bruun, Morten Haugland

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    Abstract

    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
    Volume1
    Publication date2001
    ISBN (Print)0-7803-7057-0
    DOIs
    Publication statusPublished - 2001
    Event2001 IEEE 8th International Conference on Electronics, Circuits and Systems - , Malta
    Duration: 2 Sep 20015 Sep 2001
    Conference number: 8
    https://ieeexplore.ieee.org/xpl/conhome/7591/proceeding

    Conference

    Conference2001 IEEE 8th International Conference on Electronics, Circuits and Systems
    Number8
    Country/TerritoryMalta
    Period02/09/200105/09/2001
    SponsorUniversity of Malta
    Internet address

    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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