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A tri-band CP Mimo antenna influenced by metasurface for next generation wireless communication

Shaik Abdul Khadar and Sudhakar Sahu

Journal of Electromagnetic Waves and Applications, 2025, vol. 39, issue 15, 1794-1823

Abstract: An innovative triple-band circularly polarized (CP) MIMO antenna inspired by a metasurface, designed for advanced wireless communication systems has been reported in this article. The proposed antenna operates across 2.12 - 3.18 GHz, 4.36 - 5 GHz, and 5.80 - 6.80 GHz with respective bandwidths of 40%, 13.8%, and 15.9%. The axial ratio (AR) bandwidth lies entirely within the impedance bandwidth; ensuring stable CP with average gain approximately 1.92 dBi, 2.04 dBi & 2.40 dBi. Metasurface integration enhances AR bandwidth to 200 MHz, 450 MHz, and 500 MHz, and peak gains are enhanced to 9.5 dBi, 3.97 dBi, and 10.57 dBi. Metamaterial unit cells placed between MIMO elements improve isolation from 15 dB to over 30 dB. The design achieves wideband CP, high gain, and low mutual coupling. Excellent MIMO performance is confirmed through ECC, DG, CCL, and MEG metrics. Simulation and measurement results validate its effectiveness across S- and C-bands, making it ideal for Wi-Fi, WiMax, satellite, and 6G applications.

Date: 2025
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DOI: 10.1080/09205071.2025.2529463

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