Wirelessly powered sensor transponder for UHF RFID

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    10 Citations (Scopus)

    Abstract

    A transponder for UHF RFID with sensor interface for external capacitive sensors is described. The sensor interface consists of a capacitive voltage divider and a 10 bit successive approximation analog to digital converter. The power consumption is about 30 ìWDC and the transponder is wirelessly powered with RF waves from the reader device. Wireless measurement of capacitance is demonstrated at a distance of 30 cm with 0.5 W erp transmission power. Low operation distance is mostly due to low efficiency of the rectifying Schottky-diodes in the particular BiCMOS process.
    Original languageEnglish
    Title of host publicationProceedings
    Subtitle of host publication14th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2007
    PublisherIEEE Institute of Electrical and Electronic Engineers
    Pages73-76
    ISBN (Print)1-4244-0841-5, 1-4244-0842-3
    DOIs
    Publication statusPublished - 2007
    MoE publication typeA4 Article in a conference publication
    Event14th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS '07 and EUROSENSORS XXI - Lyon, France
    Duration: 10 Jun 200714 Jun 2007

    Conference

    Conference14th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS '07 and EUROSENSORS XXI
    Abbreviated titleTRANSDUCERS '07 and EUROSENSORS XXI
    Country/TerritoryFrance
    CityLyon
    Period10/06/0714/06/07

    Keywords

    • UHF RFID
    • sensor

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