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Passive wireless permittivity sensor based on frequency-coded chipless RFID tags

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3 Author(s)
David Girbau ; Department of Electronic, Electrical and Automatic Control Engineering. Universitat Rovira i Virgili., 43007 Tarragona, Spain ; Antonio Lázaro ; Ramón Villarino

This paper proposes to integrate the functions of identification and sensing into a passive chipless RFID tag. A frequency-coded tag which contains a dual-band capacitive-loaded resonator is proposed. The first resonance is used for identification and the second one is used for sensing the permittivity of the material attached to the tag. A theoretical model is proposed and simulated and measured results are presented.

Published in:

Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International

Date of Conference:

17-22 June 2012