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Design of circularly polarized unidirectional antenna using probe-excited circular ring antenna above the square reflector with inserted metallic slabs
Author(s)
Lertsakwimarn, Kittima
Sukkamat, Rungsinee
Mhudtongon, Nattaset
Kosulvit, Sompol
Akkaraekthalin, Prayoot
Date Issued
January 17, 2017
Type
Conference Paper
Abstract
This paper proposes a circularly polarized unidirectional antenna using a probe excited circular ring with inserted perpendicular slabs above the square reflector for UHF-RFID system. The measured S11 ≤ -10 dB covers 884-1000 MHz or 12.31% bandwidth, and 3-dB AR bandwidth of 900-1000 MHz or 10.53% bandwidth. The maximum gain is 8.35 dBic. The half-power beamwidths in xz-and yz-planes are 66.3 and 66.7 degrees, respectively.
Citation
Isap 2016 International Symposium on Antennas and Propagation, 962-963, 2017