High-Gain Wideband CP S-shaped Slot Antenna with Metasurface Reflector for UHF-RFID Readers

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dc.contributor.authorSupreeyatitikul, Nathapat
dc.contributor.authorBoonpoonga, Akkarat
dc.contributor.authorPhongcharoenpanich, Chuwong
dc.date.accessioned2026-08-06T10:35:47Z
dc.date.available2026-08-06T10:35:47Z
dc.date.issued2022-01-01
dc.description.abstractThis research proposes a high-gain wideband circularly polarized (CP) S-shaped slot antenna with metasurface (MTS) reflector for UHF-RFID handheld readers. The proposed antenna consisted of the S-shaped slot antenna with coplanar waveguide feed on the upper substrate and 4 × 4 periodically-arranged plus-sign-shaped slot MTS unit cells on the lower substrate functioning as a reflector. The MTS reflector was utilized to realize the high-gain of the CP S-shaped slot antenna. To achieve wide impedance bandwidth (IBW) and axial ratio bandwidth (ARBW), the evolution of the antenna was developed in four stages. The simulated IBW and ARBW of the Antenna IV (proposed antenna) at 0.9 GHz (center frequency) were 37.7% (0.66-1 GHz) and 27.7% (0.72-0.97 GHz), respectively. In addition, the maximum gain was 7.56 dBic at 0.78 GHz with left-hand circular polarization (LHCP) radiation characteristics. The dimension of the proposed antenna was 0.35?0 × 0.35?0 × 0.195?0.
dc.identifier.citationProceedings of the 2022 International Electrical Engineering Congress Ieecon 2022, 2022
dc.identifier.doi10.1109/iEECON53204.2022.9741589
dc.identifier.other2-s2.0-85128231712
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/12893
dc.sourceProceedings of the 2022 International Electrical Engineering Congress Ieecon 2022
dc.subjectcircularly polarized antenna
dc.subjectcoplanar waveguide
dc.subjectmetasurface
dc.subjectslot antenna
dc.subjectUHF-RFID handheld readers
dc.titleHigh-Gain Wideband CP S-shaped Slot Antenna with Metasurface Reflector for UHF-RFID Readers
dc.typeConference Paper

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