SELECTABLE SECTORAL ANTENNA ARRAY USING A QUADRUPLE FEEDING NETWORK FOR ITEM-LEVEL TAGGING IN UHF RFID APPLICATIONS

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For avoiding a dead zone where the tag cannot be detected in the ultrahigh-frequency (UHF) radio frequency identification (RFID), a SELECTABLE SECTORAL ANTENNA ARRAY USING a QUADRUPLE FEEDING NETWORK FOR ITEM-LEVEL TAGGING IN UHF RFID APPLICATIONS is presented. The proposed antenna array consists of a 2 x 2 circular polarized quadrifilar spiral antenna array and a quadruple feeding network for multiple beams. It generates single, dual, and quad beams with a hemispheric coverage by a beam switching, and its maximum gain and 3 dB beamwidth are approximately 7.8 dBic and 60 degrees, respectively. Compared with the conventional antennas, the proposed antenna array provides the improved tag identification with the dead zone avoidance in the reading range.
Publisher
WILEY-BLACKWELL
Issue Date
2015-07
Language
English
Article Type
Article
Citation

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, v.57, no.7, pp.1523 - 1526

ISSN
0895-2477
DOI
10.1002/mop.29137
URI
http://hdl.handle.net/10203/198770
Appears in Collection
EE-Journal Papers(저널논문)
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