Orthogonally proximity-coupled patch antenna for a passive RFID tag on metallic surfaces

A new wideband rectangular patch antenna for radio frequency identification tags mountable on metallic surfaces is presented. An orthogonally proximity‐coupled feed structure, in which the direction of the microstrip feedline is orthogonal to that of the resonant length of the radiating patch, is ex...

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Bibliographic Details
Published in:Microwave and optical technology letters 2007-03, Vol.49 (3), p.715-717
Main Authors: Son, Hae-Won, Choi, Gil-Young
Format: Article
Language:English
Subjects:
Antennas
Impedance matching
metal tag
Microwaves
Patch antennas
proximity-couple
Radio frequency identification
RFID tag antenna
Simulation
Tags
Wideband
wideband antenna
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Summary:A new wideband rectangular patch antenna for radio frequency identification tags mountable on metallic surfaces is presented. An orthogonally proximity‐coupled feed structure, in which the direction of the microstrip feedline is orthogonal to that of the resonant length of the radiating patch, is explored to perform simple and wideband impedance matching between an antenna and a tag chip without any additional matching networks. The proposed antenna has wideband characteristics and good cross‐polarization, which are validated by simulations and measurements. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 715–717, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22222
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.22222