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Open AccessArticle

A Compact Quad-Element UWB-MIMO Antenna System with Parasitic Decoupling Mechanism

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Department of Telecommunication Engineering, University of Engineering and Technology, Taxila 47050, Pakistan
2
School of Computing and Mathematics, Charles Sturt University, Port Macquarie NSW 2444, Australia
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Department of Telecommunication Engineering, Balochistan University of Information Technology, Engineering and Management Sciences, Quetta 87300, Pakistan
4
Center for Advance Studies in Telecommunications, COMSATS University Islamabad, Park Road, Tarlai, Kalan, Islamabad 45550, Pakistan
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(11), 2371; https://doi.org/10.3390/app9112371
Received: 30 April 2019 / Revised: 16 May 2019 / Accepted: 5 June 2019 / Published: 11 June 2019
(This article belongs to the Special Issue Substrate Integrated Waveguide (SIW) and Its Applications)
This research work proposes a compact four-port multiple-input multiple-output (MIMO) antenna that operates in the whole license free ultra-wideband (UWB) spectrum of 3.1–10.6 GHz. Spatial diversity has been introduced by arranging these antennas in close proximity without developing a strong mutual coupling. Antenna elements are evolved from a conventional rectangular patch antenna whereas a customized decoupling structure is introduced on the back side of the substrate to achieve the desired isolation level. The parasitic decoupling structure consists of different features which are resonant at different frequencies offering a whole UWB coverage. In addition to the decoupling structure a dumbbell shaped stub has also been introduced to the partial ground plane to suppress the mutual coupling. The overall measured isolation among elements is more than 20 dB. Different MIMO performance parameters have also been investigated from the measured results. Whole MIMO system measures 0.41 λo × 0.44 λo at 3.1 GHz. The MIMO system is intended for high data rate and short-range communication devices used in wireless personal area networks. View Full-Text
Keywords: channel capacity loss (CCL); decoupling; envelope correlation coefficient (ECC); isolation; multiple-input multiple-output (MIMO); total active reflection coefficient (TARC); ultra-wideband (UWB) channel capacity loss (CCL); decoupling; envelope correlation coefficient (ECC); isolation; multiple-input multiple-output (MIMO); total active reflection coefficient (TARC); ultra-wideband (UWB)
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MDPI and ACS Style

Amin, F.; Saleem, R.; Shabbir, T.; Rehman, S.; Bilal, M.; Shafique, M.F. A Compact Quad-Element UWB-MIMO Antenna System with Parasitic Decoupling Mechanism. Appl. Sci. 2019, 9, 2371.

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