Mutual Coupling Mitigation Through Parasitic Structure in a Dual-Band Millimeter-Wave Flexible MIMO Antenna
Ahmad J. Hashmi M.
2024Institute of Electrical and Electronics Engineers Inc.
International Conference on Engineering and Emerging Technologies, ICEET
2024Issue 2024
This paper introduces a dual-band millimeter-wave flexible multi-input multi-output (MIMO) antenna for wearable applications, comprising four identical elements in a cross configuration on a flexible Rogers RT5880 substrate. Each element includes a rectangular microstrip patch with an inverted U-shaped slot, facilitating dual-band operation at 28 GHz and 33 GHz. A parasitic structure was added to the MIMO design to reduce mutual coupling. Results indicate that the antenna achieves a bandwidth of 0.28 GHz (27.98-28.26 GHz) in the lower band and 1.01 GHz (32.24-33.25 GHz) in the upper band, with gains of 6.10 dBi at 28 GHz and 9.05 dBi at 33 GHz, and efficiencies of 0.77 and 0.88, respectively. The parasitic structure reduces the mutual coupling to below -20 dB across both bands. The antenna performed stably under extreme bending conditions. The low envelope correlation coefficient (< 0.05) and high diversity gain (approaching 10 dB) confirmed the effectiveness of MIMO communication. This dual-band MIMO antenna offers a promising solution for wearable applications with high isolation and stable performance.
Antenna , dual-band , millimeter-wave band , MIMO , patch
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School of Engineering and Digital Sciences, Nazarbayev University, Department of Electrical and Computer Engineering, Astana, Kazakhstan
School of Engineering and Digital Sciences
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026