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
CountryFrance
CityLyon
Period10/06/0714/06/07

Keywords

  • UHF RFID
  • sensor

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  • Cite this

    Pursula, P., Marjonen, J., Ronkainen, H., & Jaakkola, K. (2007). Wirelessly powered sensor transponder for UHF RFID. In Proceedings: 14th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2007 (pp. 73-76). IEEE Institute of Electrical and Electronic Engineers. https://doi.org/10.1109/SENSOR.2007.4300074