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Compact MIMO antenna with optimized mutual coupling reduction using DGS

Published online by Cambridge University Press:  13 December 2013

Ahmed A. Ibrahim ,
Mahmoud A. Abdalla ,
Adel B. Abdel-Rahman  and
Hesham F. A. Hamed
Ahmed A. Ibrahim
Affiliation:
Faculty of Engineering, El-Minia University, El-Minia, Egypt
Mahmoud A. Abdalla*
Affiliation:
Electrical Engineering branch, MTC College, Cairo University, Cairo, Egypt
Adel B. Abdel-Rahman
Affiliation:
Faculty of Engineering, South Valley University, Qena, Egypt
Hesham F. A. Hamed
Affiliation:
Faculty of Engineering, El-Minia University, El-Minia, Egypt
*
Corresponding author: M. A. Abdalla Email: maaabdalla@ieee.org
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Abstract

A design of low mutual coupling between two microstrip patch antennas for multi input multi output antenna is presented. The two antenna elements operate at 5.8 GHz for wireless applications. The reduction of mutual coupling between the antenna elements is achieved by using a defected ground structure (DGS). The DGS is inserted between the microstrip patch antenna elements to limit the surface waves between them. The separation between the edges of the two elements has been achieved to be only 0.058λ0. The analysis of the correlation coefficient, diversity gain and total active reflection coefficient is presented to validate the performance of the multiple-input–multiple-output (MIMO) antenna. The isolation of the proposed MIMO antenna is 28 dB at 5.8 GHz and the envelope correlation equals 0.003. Owing to these good performances each antenna can operate almost independently. A good agreement is achieved between the simulated and the measured results.

Keywords

MIMO antennaDGSCoupling reduction
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 6 , Issue 2 , April 2014 , pp. 173 - 180
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013 

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