Coupling Minimization of Dual-Port Meta-Surface MIMO Antenna With Pin Vias for IoT Technology

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dc.contributor.authorSupreeyatitikul, Nathapat
dc.contributor.authorBoonpoonga, Akkarat
dc.contributor.authorPhongcharoenpanich, Chuwong
dc.contributor.authorLerttheerachanchai, Wirote
dc.contributor.authorKonpang, Jessada
dc.date.accessioned2026-08-06T10:49:21Z
dc.date.available2026-08-06T10:49:21Z
dc.date.issued2025-01-01
dc.description.abstractThis study proposed a single-layer, compact, dual-port meta-surface multiple-input multiple-output (MIMO) antenna for Internet of Things (IoT) applications. Coupling between ports is effectively minimized using pin vias, which connects the meta-surface to the ground plane and functions as an LC resonator circuit to suppress useless frequencies. Here, L and C represent inductance and capacitance, respectively. Additionally, pin vias reduces mutual coupling by mitigating concentrated current distributions on the meta-surface components, achieving high isolation. The simulated results reveal a return loss bandwidth (RLBW) spanning 3.76-7.4 GHz (70% at a center frequency of 5.2 GHz) with isolation (S<inf>12</inf>) exceeding 19 dB. Furthermore, the envelope correlation coefficient is below 0.035, and the diversity gain reaches 9.82 dB. The antenna achieves a maximum gain of 5.54 dBi at 4.3 GHz. This demonstrates that the pin vias decoupling technique is highly effective for coupling reduction in meta-surface MIMO antennas.
dc.identifier.citation22nd International Conference on Electrical Engineering Electronics Computer Telecommunications and Information Technology Ecti Con 2025, 2025
dc.identifier.doi10.1109/ECTI-CON64996.2025.11100522
dc.identifier.other2-s2.0-105014351601
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/16497
dc.source22nd International Conference on Electrical Engineering Electronics Computer Telecommunications and Information Technology Ecti Con 2025
dc.subjectDiversity gain
dc.subjectenvelope correlation coefficient
dc.subjectIoT
dc.subjectmeta-surface
dc.subjectMIMO
dc.titleCoupling Minimization of Dual-Port Meta-Surface MIMO Antenna With Pin Vias for IoT Technology
dc.typeConference Paper

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