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Dual-Band Eight-Element MIMO Array Using Multi-Slot Decoupling Technique for 5G Terminals

Hu, Wei, Qian, Long, Gao, Steven, Wen, Le-Hu, Luo, Qi, Xu, Hang, Liu, Xuekang, Liu, Ying, Wang, Wei (2019) Dual-Band Eight-Element MIMO Array Using Multi-Slot Decoupling Technique for 5G Terminals. IEEE Access, 7 . pp. 153910-153920. ISSN 2169-3536. (doi:10.1109/ACCESS.2019.2948639) (KAR id:80233)

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https://doi.org/10.1109/ACCESS.2019.2948639

Abstract

This paper presents a dual-band eight-element multiple-input multiple-output (MIMO) array using a multi-slot decoupling technique for the fifth generation (5G) mobile communication. By employing a compact dual-loop antenna element, the proposed array obtains two broad bandwidths of 12.2% and 15.4% for sub-6GHz operation. To reduce the mutual coupling between antenna elements, a novel dual-band decoupling method is proposed by employing a multi-slot structure. The proposed MIMO array achieves 15.5-dB and 19.0-dB isolations across the two operating bands. Furthermore, three decoupling modes generated by different bent slots can be independently tuned. Zero ground clearance is also realized by the coplanar arrangement of the antenna elements and decoupling structures. The proposed MIMO array was simulated, fabricated, and measured. Experimental results agree well with the simulations, showing that the dual-band MIMO array has good impedance matching, high isolation, and high efficiency. In addition, the envelope correlation coefficient and channel capacity are calculated and analyzed to validate the MIMO performance of the 5G terminal array. Such a dual-band high-isolation eight-element MIMO array with zero ground clearance is a promising candidate for 5G or future mobile applications.

Item Type: Article
DOI/Identification number: 10.1109/ACCESS.2019.2948639
Uncontrolled keywords: Dual-band decoupling, fifth generation (5G) communication, MIMO antenna, smartphone antenna
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Steven Gao
Date Deposited: 25 Feb 2020 16:41 UTC
Last Modified: 16 Feb 2021 14:11 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/80233 (The current URI for this page, for reference purposes)
Gao, Steven: https://orcid.org/0000-0002-7402-9223
Wen, Le-Hu: https://orcid.org/0000-0001-9757-1114
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