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Open AccessArticle

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

School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu 610054, China
School of Computer and Electrical Engineering, Hunan University of Arts and Science, Changde 415000, China
Author to whom correspondence should be addressed.
Electronics 2019, 8(9), 994;
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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