Dual-Band UHF-RFID Tags Based on Meander Line Antennas Loaded with Spiral Resonators Articles uri icon

authors

  • Paredes Marco, Ferran
  • Zamora Gonzalez, Gerard
  • HERRAIZ MARTINEZ, FRANCISCO JAVIER
  • Bonache Albacete, Jordi
  • Martin Antolin, Ferran

publication date

  • January 2011

start page

  • 768

end page

  • 771

volume

  • 10

International Standard Serial Number (ISSN)

  • 1536-1225

Electronic International Standard Serial Number (EISSN)

  • 1548-5757

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.