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Design and Experimental Evaluation of Modified Square Loop Feeding for UHF RFID Tags

Author

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  • Md Rokunuzzaman
  • Mohammad Tariqul Islam
  • Haslina Arshad
  • Mandeep Jit Singh
  • Norbahiah Misran

Abstract

This paper addresses the performance evaluation of a modified square loop antenna design for UHF RFID applications that is excited through a narrow feed line connected to a square loop, an impedance matching network. The square loop dimensions are modified to reach a conjugate impedance matching. A gap is fixed between the feed-lines to link the chip. To achieve impedance matching, the structures of the feed-line are optimized accordingly. In addition, the antenna consists of a straightforward geometry. An 11.9-meter maximum read range is achieved using a compact size of 80 × 44 mm2 and 3.2 W for the effective isotropic radiated power. Additional findings reveal that the proposed tag antenna is able to provide a stable resonance response in the near field of a large metallic surface.

Suggested Citation

  • Md Rokunuzzaman & Mohammad Tariqul Islam & Haslina Arshad & Mandeep Jit Singh & Norbahiah Misran, 2015. "Design and Experimental Evaluation of Modified Square Loop Feeding for UHF RFID Tags," PLOS ONE, Public Library of Science, vol. 10(7), pages 1-18, July.
    • Handle: RePEc:plo:pone00:0132530
    DOI: 10.1371/journal.pone.0132530
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