Miniaturized wide-band dual-polarized tightly coupled array for 5G millimeter-wave smartphones

Chan Bai, Shuai Zhang, Zixuan Song, Yuguo Liu and Zepu Wang

Journal of Electromagnetic Waves and Applications, 2024, vol. 38, issue 1, 49-65

Abstract: This paper presents a miniaturized wide-band dual-polarized tightly coupled dipole antenna for 5G millimeter-wave smartphones. The proposed antenna realizes miniaturization to avoid any grating lobes and achieves feed port reduction to reduce cost by utilizing the wideband balanced feeding of planar balun. The operating bandwidth of pol-x is 19.95-45.78 GHz and of pol-y is 20.11-46.32 GHz, which contains the entire dominant 5G millimeter-wave bands for mobile communication. The proposed 1 × 8 array is 23.8 mm × 3.5 mm × 1.297 mm which adapt to the size-limited of 5G smartphones. The peak gain of pol-x is 11.71 dBi and of pol-y is 12.45 dBi. The scanning performance of proposed 1 × 8 array is measured through the test feed powers dividers, which achieve wide beam scanning of around ±60°. The experimental results demonstrate that the proposed array with good performances exhibits great potential for 5G millimeter-wave smartphones application.

Date: 2024
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DOI: 10.1080/09205071.2023.2270562

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