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Selectable sectoral antenna array using a quadruple feeding network for item‐level tagging in UHF RFID applications
Author(s) -
Lee WangSang,
Yu JongWon
Publication year - 2015
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.29137
Subject(s) - ultra high frequency , beamwidth , antenna (radio) , antenna array , fan beam antenna , microwave , radio frequency identification , engineering , antenna measurement , electronic engineering , computer science , electrical engineering , telecommunications , periscope antenna , computer security
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 × 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°, respectively. Compared with the conventional antennas, the proposed antenna array provides the improved tag identification with the dead zone avoidance in the reading range. © 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:1523–1526, 2015
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