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Design of compact RFID reader antenna with high transmit/receive isolation
Author(s) -
Son HaeWon,
Lee JungNam,
Choi GilYoung
Publication year - 2006
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.22017
Subject(s) - isolation (microbiology) , radio frequency identification , microwave , electrical engineering , antenna (radio) , engineering , electronic engineering , telecommunications , physics , optics , computer science , computer security , microbiology and biotechnology , biology
A radio frequency identification (RFID) reader antenna with high transmit/receive isolation, which consists of two circularly‐polarized radiating patches, is presented. The high isolation is achieved by the symmetric design of the antenna geometry and proper arrangement of four feed points on the patches, which are fed by branch‐line hybrid couplers. The experimental results show the transmit/receive isolation of more than 36 dB in the 860–960 MHz RFID frequency band. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2478–2481, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22017