2026-04-14T05:49:07Zhttps://recercat.cat/oai/request

oai:recercat.cat:2072/4734142025-04-03T10:18:19Zcom_2072_98col_2072_378192

00925njm 22002777a 4500 dc Paredes, Ferran author Zamora González, Gerard author Herraiz-Martínez, Francisco Javier author Martín, Ferran author Bonache Albacete, Jordi author 2011 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 Radio frequency identification (RFID) Spiral resonator (SR) Dual-band Impedance matching Meander line antenna (MLA) Dual-band UHF-RFID tags based on meander line antennas loaded with spiral resonators