Dual-band UHF-RFID tags based on meander line antennas loaded with spiral resonators
Paredes, Ferran (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Zamora González, Gerard (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Herraiz-Martínez, Francisco Javier (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Martín, Ferran (Martín Antolín) (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
Bonache Albacete, Jordi (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)

Date:	2011
Abstract:	The purpose of this letter is to implement dual-band tags for ultrahigh-frequency (UHF) radio frequency identification (RFID) applications operative in Europe and the US. Since the regulated bands of UHF-RFID in Europe (867 MHz) and the US (915 MHz) are close, broadband tags might be also considered. However, it is demonstrated in this letter that the performance of dual-band tags designed to operate at the frequency bands of interest is superior to that of broadband (monoband) tags. A meander-line antenna (MLA) has been considered for tag implementation. The dual-band functionality is achieved through a perturbation method consisting of coupling an electrically small resonator [a two-turn spiral resonator (2-SR)] to the antenna. The analysis, design, and fabrication of a dual-band UHF-RFID tag has been carried out. The measured performance of the fabricated prototype is in good agreement with theory. Measured read ranges of 6 and 8 m at the European and US frequency bands, respectively, have been obtained.
Grants:	Ministerio de Ciencia e Innovación TEC2010-17512 Ministerio de Ciencia e Innovación CSD2008-00066 Ministerio de Industria, Turismo y Comercio TSI-020100-2009-778 Ministerio de Industria, Turismo y Comercio TSI-020100-2010-493 Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-421
Rights:	Tots els drets reservats.
Language:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Subject:	Radio frequency identification (RFID) ; Spiral resonator (SR) ; Dual-band ; Impedance matching ; Meander line antenna (MLA)
Published in:	IEEE antennas and wireless propagation letters, Vol. 10 (July 2011) , p. 768-771, ISSN 1536-1225

DOI: 10.1109/LAWP.2011.2162716

Postprint 6 p, 593.9 KB

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