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Open AccessArticle

A Low-Profile and High-isolated MIMO Antenna for 5G Mobile Terminal

College of Electronic Engineering, Chengdu University of Information Technology, Chengdu 610225, China
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Author to whom correspondence should be addressed.
Micromachines 2020, 11(4), 360; https://doi.org/10.3390/mi11040360
Received: 21 February 2020 / Revised: 24 March 2020 / Accepted: 27 March 2020 / Published: 30 March 2020
An eight-element multiple-input multiple-output (MIMO) frame antenna array in the 3.5 GHz band (3400–3600 MHz) for 5G mobile terminal systems was presented. By using the adjacent grounding and electromagnetic coupling feeding technology, the loop antenna element could generate two resonant frequencies, thus effectively expanding its bandwidth. By adopting double-sided parallel strip line (DSPSL) technology, the electromagnetic coupling inside the loop antenna could be adjusted, and the size of the loop antenna could be effectively reduced so that the MIMO antenna array could obtain a low-profile structure. The total size of the MIMO array was 150 mm × 75 mm × 5.3 mm. Without additional isolation measures, the measured −6 dB impedance bandwidth (BW) was 3400–3660 MHz, and the minimum isolation between antenna elements was better than −20 dB. The proposed antenna was expected to be applied to 5G mobile terminals based on its low-profile, high-isolated characteristics, and good MIMO performance. View Full-Text
Keywords: 5G communication; mobile terminal; multiple-input multiple-output (MIMO) antenna; high isolation 5G communication; mobile terminal; multiple-input multiple-output (MIMO) antenna; high isolation
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MDPI and ACS Style

Li, R.; Mo, Z.; Sun, H.; Sun, X.; Du, G. A Low-Profile and High-isolated MIMO Antenna for 5G Mobile Terminal. Micromachines 2020, 11, 360. https://doi.org/10.3390/mi11040360

AMA Style

Li R, Mo Z, Sun H, Sun X, Du G. A Low-Profile and High-isolated MIMO Antenna for 5G Mobile Terminal. Micromachines. 2020; 11(4):360. https://doi.org/10.3390/mi11040360

Chicago/Turabian Style

Li, Rongqiang; Mo, Zixu; Sun, Haoran; Sun, Xiaofeng; Du, Guohong. 2020. "A Low-Profile and High-isolated MIMO Antenna for 5G Mobile Terminal" Micromachines 11, no. 4: 360. https://doi.org/10.3390/mi11040360

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