Design of circularly polarized unidirectional antenna using probe-excited circular ring antenna above the square reflector with inserted metallic slabs

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dc.contributor.authorPhongcharoenpanich, Chuwong
dc.contributor.authorLertsakwimarn, Kittima
dc.contributor.authorSukkamat, Rungsinee
dc.contributor.authorMhudtongon, Nattaset
dc.contributor.authorKosulvit, Sompol
dc.contributor.authorAkkaraekthalin, Prayoot
dc.date.accessioned2026-08-06T10:15:52Z
dc.date.available2026-08-06T10:15:52Z
dc.date.issued2017-01-17
dc.description.abstractThis 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 S<inf>11</inf> ≤ -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.
dc.identifier.citationIsap 2016 International Symposium on Antennas and Propagation, 962-963, 2017
dc.identifier.other2-s2.0-85013202265
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/7442
dc.sourceIsap 2016 International Symposium on Antennas and Propagation
dc.subjectCircular polarization (CP)
dc.subjectCircular ring
dc.subjectUHF-RFID
dc.subjectUnidirectional pattern
dc.titleDesign of circularly polarized unidirectional antenna using probe-excited circular ring antenna above the square reflector with inserted metallic slabs
dc.typeConference Paper

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