Passive UHF RFID enabled temperature sensor tag on cork substrate

Sergi Rima, Apostolos Georgiadis, Ana Collado, Ricardo Gonçalves, Nuno Borges Carvalho

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The design of a fully passive RFID enabled temperature sensor implemented on cork substrate is presented. A passive UHF RFID tag is designed based on a commercial RFID chip and a 3D meandered dipole antenna. The antenna is fabricated by milling the radiating structure on copper tape and gluing it on a cork substrate of rectangular prism shape leading to a low profile design. The matching network of the tag chip is modified to include a thermistor element. It is optimized using electromagnetic simulation to maximize its impedance sensitivity to temperature variations thus successfully implementing a passive antenna based temperature sensor. A variation in temperature leads to a modification of the tag read range in frequency, which can be detected by a reader with frequency or power sweep capability. A UHF prototype is fabricated and measurements are presented demonstrating the sensing operation.

Original languageEnglish
Title of host publication2014 IEEE RFID Technology and Applications Conference (RFID-TA)
PublisherIEEE
Pages82-85
Number of pages4
ISBN (Electronic)978-1-4799-4680-8
DOIs
Publication statusPublished - 2014
Event2014 IEEE RFID Technology and Applications Conference - Tampere, Finland
Duration: 8 Sep 20149 Sep 2014

Conference

Conference2014 IEEE RFID Technology and Applications Conference
Abbreviated titleRFID-TA 2014
CountryFinland
CityTampere
Period8/09/149/09/14

Keywords

  • RFID
  • antenna sensing
  • temperature sensor
  • cork

Cite this

Rima, S., Georgiadis, A., Collado, A., Gonçalves, R., & Carvalho, N. B. (2014). Passive UHF RFID enabled temperature sensor tag on cork substrate. In 2014 IEEE RFID Technology and Applications Conference (RFID-TA) (pp. 82-85). IEEE. https://doi.org/10.1109/RFID-TA.2014.6934205