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Design of a compact MIMO antenna system with reduced mutual coupling

Published online by Cambridge University Press:  02 October 2014

Mohammed Younus Talha ,
Kamili Jagadeesh Babu  and
Rabah W. Aldhaheri
Mohammed Younus Talha
Affiliation:
Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia
Kamili Jagadeesh Babu*
Affiliation:
Department of ECE, St. Ann's College of Engineering and Technology, Chirala, AP, India
Rabah W. Aldhaheri
Affiliation:
Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia
*
Corresponding author: K.J. Babu Email: [email protected]
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Abstract

A novel compact multiple-input–multiple-output (MIMO) antenna system operating from 5 to 7.3 GHz is proposed for wireless applications. It comprises of two similar antennas with microstrip feeding and radiating patches developed on a reduced ground plane. The developed antenna system resonates at a dual-band of 5.4 and 6.8 GHz frequencies, giving an impedance bandwidth of 38% (based on S11 < −10 dB). The unique structure of the proposed MIMO system gives a reduced mutual coupling of −27 dB at 5.4 GHz resonant frequency and −19 dB at 6.8 GHz resonant frequency and in the entire operating band the coupling is maintained well below −16 dB. The envelope correlation coefficient of the proposed MIMO system is calculated and is found to be less than 0.05 in the operating band. The measured and simulation results are found in good agreement.

Keywords

MIMO systemsImpedance bandwidthMutual couplingEnvelope correlation coefficient
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 1 , February 2016 , pp. 117 - 124
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2014 

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