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    Spatially Confined UHF RFID Detection With a Metamaterial Grid

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    Wireless Communications Spatially Confined UHF RFID Detection with a Metamaterial Wire Grid - Morgado, T. A.; J. A. Alves; J. Marcos; Maslovski , S.; Costa, J.R.; Fernandes, C. A.; Silveirinha, M.; IEEE Trans. on Antennas and Propagation Vol. 62 , No. 1 , pp. 378 - 384 , January , 2014 . ISSN (print): 0018-926X ISSN (online): 0018-926X Journal Impactor Factor: 2.479 (in 2008) Digital Object Identifier: 0 Abstract The confinement of the detection region is one of the most challenging issues inUltra-High Frequency (UHF) Radio Frequency Identification (RFID) systems.Here, we propose a new paradigm to confine the interrogation zone of standard UHF RFID systems. Our approach relies on the use of an all-planar metamaterial wire grid to block the radiation field (i.e., the far-field) of the reader antenna, and thereby obtain a spatially well-confined detection region in the near-field. This solution is analytically and numerically investigated, and then experimentally verified through near-field and tag-reading measurements, demonstrating its effectiveness and robustness under external perturbations.

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    Title : Spatially Confined UHF RFID Detection With a Metamaterial Grid
    Author(s) : Tiago A. Morgado, Jorge M. Alves, João S. Marcos, Stanislav I. Maslovski, Jorge R. Costa, Carlos A. Fernandes, and Mário G. Silveirinha
    Abstract : Wireless Communications Spatially Confined UHF RFID Detection with a Metamaterial Wire Grid - Morgado, T. A.; J. A. Alves; J. Marcos; Maslovski , S.; Costa, J.R.; Fernandes, C. A.; Silveirinha, M.; IEEE Trans. on Antennas and Propagation Vol. 62 , No. 1 , pp. 378 - 384 , January , 2014 . ISSN (print): 0018-926X ISSN (online): 0018-926X Journal Impactor Factor: 2.479 (in 2008) Digital Object Identifier: 0 Abstract The confinement of the detection region is one of the most challenging issues inUltra-High Frequency (UHF) Radio Frequency Identification (RFID) systems.Here, we propose a new paradigm to confine the interrogation zone of standard UHF RFID systems. Our approach relies on the use of an all-planar metamaterial wire grid to block the radiation field (i.e., the far-field) of the reader antenna, and thereby obtain a spatially well-confined detection region in the near-field. This solution is analytically and numerically investigated, and then experimentally verified through near-field and tag-reading measurements, demonstrating its effectiveness and robustness under external perturbations.
    Keywords : Metamaterials, near-field UHF RFID, radio frequency identification (RFID), wire media

    Subject : Antennas and Propagation
    Area : Electronic Engineering
    Language : English
    Year : 2014

    Affiliations Instituto de Telecomunicações, ISCTE-IUL, Lisbon, Portugal
    Journal : IEEE Transactions on Antennas and Propagation
    Volume : 62
    Issue : 1
    Publisher : IEEE
    Pages : 378-384
    Isbn : 0018-926X
    Doi : 10.1109/TAP.2013.2287027
    Attribution Non-Commercial No Derivatives

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