Wirelessly powered sensor transponder for UHF RFID

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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 publication4th 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
Event4th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2007 - Lyon, France
Duration: 24 Sep 2007 → …

Conference

Conference4th International Conference on Solid-State Sensors, Actuators and Microsystems, TRANSDUCERS and EUROSENSORS 2007
Abbreviated titleTRANSDUCERS and EUROSENSORS 2007
CountryFrance
CityLyon
Period24/09/07 → …

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Keywords

  • UHF RFID
  • sensor

Cite this

Pursula, P., Marjonen, J., Ronkainen, H., & Jaakkola, K. (2007). Wirelessly powered sensor transponder for UHF RFID. In Proceedings: 4th 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