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Open AccessArticle

Flexibly Extensible Planar Self-Isolated Wideband MIMO Antenna for 5G Communications

1
School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
2
School of Computer and Electrical Engineering, Hunan University of Arts and Science, Changde 415000, China
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Author to whom correspondence should be addressed.
Electronics 2019, 8(9), 994; https://doi.org/10.3390/electronics8090994
Received: 12 August 2019 / Revised: 1 September 2019 / Accepted: 2 September 2019 / Published: 5 September 2019
(This article belongs to the Section Microwave and Wireless Communications)
A planar flexibly extensible multiple-input–multiple-output (MIMO) antenna array with a self-isolation property is proposed. The main characteristics of the proposed array are: (i) no extra isolation structure is required to improve isolation between elements; (ii) elements are arranged with each other with a spacing of 0 mm, (iii) the configuration can be flexibly extended to a large antenna array according to actual requirements. For a test example, the practical processing and testing of an eight-element array is conducted. The tested results demonstrate that the proposed design possesses wide impedance bandwidth (IBW) of 65% and very good isolation (>18 dB) across the operating bandwidth, which match well with the simulated ones. Moreover, envelope correlation coefficient (ECC) is calculated to valuate MIMO performance; an acceptable ECC (lower than 0.05) suggests that the proposed configuration has good diversity performance and can be a potential candidate for MIMO communications. View Full-Text
Keywords: MIMO antenna; wideband; extensible; self-isolation MIMO antenna; wideband; extensible; self-isolation
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Li, Q.; Wei, Y.; Tan, M.; Lei, X.; Wu, G.; Huang, M.; Gong, Y. Flexibly Extensible Planar Self-Isolated Wideband MIMO Antenna for 5G Communications. Electronics 2019, 8, 994.

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