Title: Compact solution for metallic item detection in RFID systems by means of artificial magnetic conductor

Authors: Zhonghao Hu, Peter H. Cole, Alfio Grasso

Addresses: Auto-ID Lab Adelaide, The University of Adelaide, South Australia 5005, Australia. ' Auto-ID Lab Adelaide, The University of Adelaide, South Australia 5005, Australia. ' Auto-ID Lab Adelaide, The University of Adelaide, South Australia 5005, Australia

Abstract: The problem of detecting metallic items by UHF RFID systems is investigated. An existing artificial magnetic conductor solution (slitted decoupler) with the merits of low profile and simple structure is introduced. Theoretical analysis of the slitted decoupler is given. Based on the theoretical analysis, some principles are proposed for minimising the size of the decoupler and meanwhile improving its performance. Simulation and experiment are performed to verify these design principles.

Keywords: radio frequency identification; UHF RFID; artificial magnetic conductors; metallic item detection; path antenna; metal detection; metallic items; ultra high frequency; simulation.

DOI: 10.1504/IJRFITA.2011.040994

International Journal of Radio Frequency Identification Technology and Applications, 2011 Vol.3 No.3, pp.195 - 214

Published online: 18 Mar 2015 *

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