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Título : | Dual-band RFID tags based on folded dipole antennas loaded with spiral resonators |
Autor : | Paredes Marco, Ferran Zamora González, Gerard Herraiz Martínez, Francisco Javier Martín Antolín, Ferran Bonache Albacete, Jordi |
Fecha de publicación : | 5 |
Editorial : | Sin editorial (Tucson, Estados Unidos de América) |
Resumen : | The purpose of this paper is to demonstrate the possibility of implementing folded dipole antennas operative at two closely spaced frequencies of interest, for instance, in ultra-high-frequency radio frequency identification (UHF-RFID) applications. The dual-band functionality is achieved by coupling a spiral resonator to the antenna, which operates as an unbalanced transmission line. This modifies the impedance of the antenna and dual-band functionality can be achieved by virtue of the conjugate matching between the antenna and the chip at the frequencies of interest. Two prototype devices have been designed and fabricated: a mono-band folded dipole UHF-RFID tag, and a dual-band UHF-RFID tag based on a spiral resonator coupled to a folded dipole antenna. The measured read ranges at the operating frequencies are in the vicinity of 6 m. The read ranges of the designed tags have been also measured by attaching them to different objects (a CD-ROM box and a plastic ID card). A certain frequency shift is obtained, but this shift can be corrected by merely modifying the distance between the resonator and the antenna. |
Descripción : | Capítulos en libros |
URI : | http://hdl.handle.net/11531/35670 |
Aparece en las colecciones: | Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
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IIT-12-180A.pdf | 1,01 MB | Adobe PDF | Visualizar/Abrir Request a copy |
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