Dual-Band CP Metasurface-Array Antenna with Sequential-Phase Feed Network for C-Band Operation

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dc.contributor.authorKakhong, Khwanlada
dc.contributor.authorPhaebua, Kittisak
dc.contributor.authorPhongcharoenpanich, Chuwong
dc.contributor.authorSupreeyatitikul, Nathapat
dc.date.accessioned2026-08-06T10:53:51Z
dc.date.available2026-08-06T10:53:51Z
dc.date.issued2026-01-01
dc.description.abstractThis paper presents a four-cluster dual-band circularly polarized (CP) metasurface (MTS)-array antenna integrated with a sequential-phase feed (SPF) network for C-band applications. The antenna is implemented on dual-layer FR-4 substrates, incorporating both big- and small-sized MTS-array elements per cluster, with a tilted square-slot ground plane and microstrip-line feed. The SPF network excites each cluster with equal amplitude and 90<sup>°</sup> phase shifts, significantly enhancing return loss bandwidth (RLBW), axial ratio bandwidth, and realized gain. The simulated results demonstrate RLBW of 3.08 - 4.51 GHz and 4.94 - 8 GHz, and ARBWs of 3.08 - 4.66 GHz and 5.27 - 6.42 GHz for the lower and higher operating bands, respectively. The corresponding highest RHCP gains are 6.15 dBic at 3.8 GHz and 4 dBic at 6 GHz. The proposed antenna design achieves bi-directional radiation patterns and shows substantial performance improvements over conventional dual-band CP MTS-array antennas.
dc.identifier.citation11th International Conference on Digital Arts Media and Technology and 9th Ecti Northern Section Conference on Electrical Electronics Computer and Telecommunications Engineering Ecti Damt and Ncon 2026, 156-159, 2026
dc.identifier.doi10.1109/ECTIDAMTNCON67592.2026.11459995
dc.identifier.other2-s2.0-105036981470
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/17669
dc.source11th International Conference on Digital Arts Media and Technology and 9th Ecti Northern Section Conference on Electrical Electronics Computer and Telecommunications Engineering Ecti Damt and Ncon 2026
dc.subjectAxial ratio bandwidth
dc.subjectcircularly polarized antenna
dc.subjectmetasurface
dc.subjectRHCP
dc.subjectsequential-phase feed network
dc.titleDual-Band CP Metasurface-Array Antenna with Sequential-Phase Feed Network for C-Band Operation
dc.typeConference Paper

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