Enlargement of interrogation zone of ZPSL loop antennas for UHF RFID systems

Yunjia Zeng, Zhi Ning Chen, Xianming Qing, Jian Ming Jin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Zero-phase-shift line (ZPSL) loop antennas have recently attracted much interest by virtue of their uniform magnetic field distribution and electrically large size, which make them particularly useful as reader antennas in ultra-high frequency (UHF) near-field radio frequency identification (RFID) systems. Nevertheless, the challenge to theoretically characterize this type of antenna has led to difficulties in optimizing the loop for an electrically large interrogation zone as an RFID reader antenna. In this paper, we present for the first time the design methodology of the ZPSL loop antennas by applying the dispersion characteristics of the ZPSL structures. The perimeter of the loop antenna can be increased up to 3λ0 without current reversal along the loop. Considering the tradeoff between the loop size and the strength of the magnetic field in the interrogation zone, a ZPSL loop prototype with a perimeter up to 2.5λ0 is designed and optimized to verify the modeling and optimization experimentally.

Original languageEnglish (US)
Title of host publication2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages945-946
Number of pages2
ISBN (Electronic)9781509028863
DOIs
StatePublished - Oct 25 2016
Event2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Fajardo, Puerto Rico
Duration: Jun 26 2016Jul 1 2016

Publication series

Name2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings

Other

Other2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016
CountryPuerto Rico
CityFajardo
Period6/26/167/1/16

Keywords

  • RFID
  • UHF
  • loop antenna

ASJC Scopus subject areas

  • Instrumentation
  • Radiation
  • Computer Networks and Communications

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    Zeng, Y., Chen, Z. N., Qing, X., & Jin, J. M. (2016). Enlargement of interrogation zone of ZPSL loop antennas for UHF RFID systems. In 2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings (pp. 945-946). [7696181] (2016 IEEE Antennas and Propagation Society International Symposium, APSURSI 2016 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APS.2016.7696181