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Title: A super-wideband and high isolation MIMO antenna system using a windmill-shaped decoupling structure
Authors: Yu, Chenyin
Yang, Shuhui
Chen, Yinchao
Wang, Wensong
Zhang, Li
Li, Bin
Wang, Ling
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2020
Source: Yu, C., Yang, S., Chen, Y., Wang, W., Zhang, L., Li, B., & Wang, L. (2020). A super-wideband and high isolation MIMO antenna system using a windmill-shaped decoupling structure. IEEE Access, 8, 115767-115777. doi:10.1109/ACCESS.2020.3004396
Journal: IEEE Access
Abstract: In this paper, a novel super-wideband multiple-input multiple-output (SWB-MIMO) antenna system with high isolation has been proposed, each antenna element consisting of a spade-shaped radiation patch, a defected ground structure (DGS) as well as a windmill-shaped decoupling structure. The elliptical slot etched on the radiation patch and the rectangular DGS are jointly utilized to make better the radiation performance and impedance bandwidth. Both of four-element and eight-element SWB-MIMO antenna systems are simulated and analyzed, respectively. A prototype of the four-element SWB-MIMO antenna system with total dimensions of 58 mm ×58 mm ×1 mm was fabricated to verify the concept of design using an FR4 material substrate. Measurement and simulation results indicate that the proposed SWB-MIMO antenna system can work in the frequency band ranging from 2.9 to 40 GHz with a mutual coupling of lower than-17 dB. Also, excellent performance has been achieved with a low envelop correlation coefficient (ECC) of lower than 0.04, high multiplexing efficiency (ηmux ) of more than-3.0 dB, stable gain of up to 13.5 dBi as well as quasi-omnidirectional radiation properties. This design provides an important guideline for obtaining a super-wide MIMO antenna.
ISSN: 2169-3536
DOI: 10.1109/ACCESS.2020.3004396
Schools: School of Electrical and Electronic Engineering 
Rights: © 2020 IEEE. This journal is 100% open access, which means that all content is freely available without charge to users or their institutions. All articles accepted after 12 June 2019 are published under a CC BY 4.0 license, and the author retains copyright. Users are allowed to read, download, copy, distribute, print, search, or link to the full texts of the articles, or use them for any other lawful purpose, as long as proper attribution is given.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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