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Dual-band RFID tags based on folded dipole antennas loaded with spiral resonators

F. Paredes, G. Zamora, F.J. Herraiz-Martínez, F. Martín, J. Bonache

International Workshop on Antenna Technology - iWAT 2012, Tucson (Estados Unidos de América). 05-07 marzo 2012


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.


Palabras clave: Dipole antenna, sRadio frequency identification (RFID), Radio navigation, Resonators


DOI: DOI icon https://doi.org/10.1109/IWAT.2012.6178417

Fecha de publicación: marzo 2012.



Cita:
Paredes, F., Zamora, G., Herraiz-Martínez, F.J., Martín, F., Bonache, J., Dual-band RFID tags based on folded dipole antennas loaded with spiral resonators, International Workshop on Antenna Technology - iWAT 2012, Tucson (Estados Unidos de América). 05-07 marzo 2012.


    Líneas de investigación:
  • Tecnologías de la Información y Comunicación (TIC)
  • Comunicaciones digitales
  • Instrumentación electrónica

IIT-12-180A

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