Title :
Passive wireless permittivity sensor based on frequency-coded chipless RFID tags
Author :
Girbau, David ; Lázaro, Antonio ; Villarino, Ramón
Author_Institution :
Department of Electronic, Electrical and Automatic Control Engineering. Universitat Rovira i Virgili., 43007 Tarragona, Spain
Abstract :
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.
Keywords :
Load modeling; Microstrip; RFID tags; Resonant frequency; Thickness measurement; capacitive-loaded resonator; chipless tag;
Conference_Titel :
Microwave Symposium Digest (MTT), 2012 IEEE MTT-S International
Conference_Location :
Montreal, QC, Canada
Print_ISBN :
978-1-4673-1085-7
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2012.6259412
