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Performance enhancement of a circularly polarized patch antenna for radio frequency identification readers using an electromagnetic band‐gap ground plane
Author(s) -
Pflaum Sylvain,
Thuc Philippe Le,
Kossiavas Georges,
Staraj Robert
Publication year - 2013
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.27642
Subject(s) - ground plane , axial ratio , ultra high frequency , microwave , patch antenna , physics , optics , impedance matching , bandwidth (computing) , frequency band , antenna (radio) , circular polarization , electrical impedance , electrical engineering , microstrip , telecommunications , engineering , quantum mechanics
A miniaturized circularly polarized (CP) patch antenna with wide impedance matching and axial ratio bandwidths and a good efficiency using an electromagnetic band gap (EBG) ground plane is presented. CP is obtained with the truncated corners technique applied on a square patch and size reduction of this radiating element is based on the slow wave phenomenon created in the EBG structure. This antenna is fabricated on a 117 × 117 × 4 mm 3 FR‐4 substrate (ε T = 4.4 and tan δ = 0.22) and dedicated to the European UHF radio frequency identification band (865–868 MHz). The measured bandwidth, realized gain, and total efficiency are 14.4%, 3.7 dBi, and 79%, respectively. Experimental and theorical results are presented and discussed. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1599–1602, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27642