An annular microstrip antenna with sectoral slots for RFID reader

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dc.contributor.authorSuwalak, Rattapong
dc.contributor.authorPongpaibool, Pornanong
dc.contributor.authorPhongcharoenpanich, Chuwong
dc.contributor.authorKrairiksh, Monai
dc.date.accessioned2026-08-06T09:59:07Z
dc.date.available2026-08-06T09:59:07Z
dc.date.issued2009-12-01
dc.description.abstractThis paper presents an annular microstrip antenna with two sectoral slots fed by a coaxial probe on a square vertical ground plane. The proposed microstrip antenna can support the dual-band operation (UHF and microwave RFID bands). From the results, the antenna has the magnitude of S11 less than -10 dB along the bandwidth of 32 MHz (3.51%) for UHF band and 140 MHz (5.76%) for microwave band. The unidirectional beam can be achieved by the proposed microstrip antenna. The beamwidth in xz- and yz-planes is 82.8 and 89 degrees at the center frequency of 922.5 MHz and beamwidth in xz- and yz-planes is 39.8 and 28 degrees at the center frequency of 2.45 GHz, respectively. This antenna has efficiently high directivity for both bands. The simulation and measurement results are shown. ©2009 IEEE.
dc.identifier.citationAPMC 2009 Asia Pacific Microwave Conference 2009, 1040-1043, 2009
dc.identifier.doi10.1109/APMC.2009.5384362
dc.identifier.other2-s2.0-77950644457
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/2733
dc.sourceAPMC 2009 Asia Pacific Microwave Conference 2009
dc.subjectDual-band
dc.subjectMicrostrip antenna
dc.subjectRFID
dc.titleAn annular microstrip antenna with sectoral slots for RFID reader
dc.typeConference Paper

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