Low Mutual Coupling Design for 5G MIMO Antennas Using Multi-Feed Technology and Its Application on Metal-Rimmed Mobile Phones

In this paper, an effective method for developing a multi-feed multiple-input multiple-output (MIMO) antenna system using the metal rims of a mobile phone without any structural interruption on the long edge frames is proposed. Instead of traditionally designing MIMO antennas with multiple similar a...

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Autores principales:	Zhongwei Ji, Yuke Guo, Yuqi He, Luyu Zhao, Guan-Long Huang, Chuangzhu Zhou, Qinjuan Zhang, Wei Lin
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	5G mobile communication antenna decoupling mobile phone antenna multiple-input multiple-output (MIMO) multi-feed technology mutual coupling Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/b374aca28387479f878608f2e59731ce
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spelling	oai:doaj.org-article:b374aca28387479f878608f2e59731ce2021-11-17T00:00:47ZLow Mutual Coupling Design for 5G MIMO Antennas Using Multi-Feed Technology and Its Application on Metal-Rimmed Mobile Phones2169-353610.1109/ACCESS.2021.3126640https://doaj.org/article/b374aca28387479f878608f2e59731ce2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9606918/https://doaj.org/toc/2169-3536In this paper, an effective method for developing a multi-feed multiple-input multiple-output (MIMO) antenna system using the metal rims of a mobile phone without any structural interruption on the long edge frames is proposed. Instead of traditionally designing MIMO antennas with multiple similar antenna structures on the mobile phone frame or its ground plane, the MIMO antennas in this work are realized by reasonably constructing feeding points and grounding points on the entire edge frame. The MIMO antenna system established by such multi-feed technique is capable to achieve much simpler structural configuration, excellent isolation and matching performance while multiple antennas are connected. A planar eight-port MIMO antenna system operating in the 5G frequency band of 3.4~3.6 GHz is investigated initially, and subsequently applied to the curved metal-rims which comply with the industry design of a modern flagship mobile phone. The prototypes are fabricated and measured, evaluation results show that isolations among all ports are better than 15 dB with reflection coefficients below −10 dB within the band of 3.4~3.7 GHz and −6 dB within the band of 3.3~3.8 GHz. In addition, more than 57% total efficiency and envelope correlation coefficient (ECC) of less than 0.3 are obtained. The satisfactory performance reveals the proposed design of multi-feed MIMO antennas can be a promising candidate for 5G metal-rimmed mobile phone applications.Zhongwei JiYuke GuoYuqi HeLuyu ZhaoGuan-Long HuangChuangzhu ZhouQinjuan ZhangWei LinIEEEarticle5G mobile communicationantenna decouplingmobile phone antennamultiple-input multiple-output (MIMO)multi-feed technologymutual couplingElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 151023-151036 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	5G mobile communication antenna decoupling mobile phone antenna multiple-input multiple-output (MIMO) multi-feed technology mutual coupling Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	5G mobile communication antenna decoupling mobile phone antenna multiple-input multiple-output (MIMO) multi-feed technology mutual coupling Electrical engineering. Electronics. Nuclear engineering TK1-9971 Zhongwei Ji Yuke Guo Yuqi He Luyu Zhao Guan-Long Huang Chuangzhu Zhou Qinjuan Zhang Wei Lin Low Mutual Coupling Design for 5G MIMO Antennas Using Multi-Feed Technology and Its Application on Metal-Rimmed Mobile Phones
description	In this paper, an effective method for developing a multi-feed multiple-input multiple-output (MIMO) antenna system using the metal rims of a mobile phone without any structural interruption on the long edge frames is proposed. Instead of traditionally designing MIMO antennas with multiple similar antenna structures on the mobile phone frame or its ground plane, the MIMO antennas in this work are realized by reasonably constructing feeding points and grounding points on the entire edge frame. The MIMO antenna system established by such multi-feed technique is capable to achieve much simpler structural configuration, excellent isolation and matching performance while multiple antennas are connected. A planar eight-port MIMO antenna system operating in the 5G frequency band of 3.4~3.6 GHz is investigated initially, and subsequently applied to the curved metal-rims which comply with the industry design of a modern flagship mobile phone. The prototypes are fabricated and measured, evaluation results show that isolations among all ports are better than 15 dB with reflection coefficients below −10 dB within the band of 3.4~3.7 GHz and −6 dB within the band of 3.3~3.8 GHz. In addition, more than 57% total efficiency and envelope correlation coefficient (ECC) of less than 0.3 are obtained. The satisfactory performance reveals the proposed design of multi-feed MIMO antennas can be a promising candidate for 5G metal-rimmed mobile phone applications.
format	article
author	Zhongwei Ji Yuke Guo Yuqi He Luyu Zhao Guan-Long Huang Chuangzhu Zhou Qinjuan Zhang Wei Lin
author_facet	Zhongwei Ji Yuke Guo Yuqi He Luyu Zhao Guan-Long Huang Chuangzhu Zhou Qinjuan Zhang Wei Lin
author_sort	Zhongwei Ji
title	Low Mutual Coupling Design for 5G MIMO Antennas Using Multi-Feed Technology and Its Application on Metal-Rimmed Mobile Phones
title_short	Low Mutual Coupling Design for 5G MIMO Antennas Using Multi-Feed Technology and Its Application on Metal-Rimmed Mobile Phones
title_full	Low Mutual Coupling Design for 5G MIMO Antennas Using Multi-Feed Technology and Its Application on Metal-Rimmed Mobile Phones
title_fullStr	Low Mutual Coupling Design for 5G MIMO Antennas Using Multi-Feed Technology and Its Application on Metal-Rimmed Mobile Phones
title_full_unstemmed	Low Mutual Coupling Design for 5G MIMO Antennas Using Multi-Feed Technology and Its Application on Metal-Rimmed Mobile Phones
title_sort	low mutual coupling design for 5g mimo antennas using multi-feed technology and its application on metal-rimmed mobile phones
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/b374aca28387479f878608f2e59731ce
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_version_	1718426069331083264

Low Mutual Coupling Design for 5G MIMO Antennas Using Multi-Feed Technology and Its Application on Metal-Rimmed Mobile Phones

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