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Wideband MIMO antenna system with dual polarization for WiFi and LTE applications

Published online by Cambridge University Press:  04 March 2015

Alishir Moradikordalivand ,
Chee Yen Leow ,
Tharek Abd Rahman ,
Sepideh Ebrahimi  and
Tien Han Chua
Alishir Moradikordalivand*
Affiliation:
Faculty of Electrical Engineering, Wireless Communication Center, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia. Phone: + 60172793063 Young Researchers and Elite Club, Arak Branch, Islamic Azad University, Arak, Iran
Chee Yen Leow
Affiliation:
Faculty of Electrical Engineering, Wireless Communication Center, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia. Phone: + 60172793063
Tharek Abd Rahman
Affiliation:
Faculty of Electrical Engineering, Wireless Communication Center, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia. Phone: + 60172793063
Sepideh Ebrahimi
Affiliation:
Department of Engineering, Islamic Azad University, Aligoudarz Branch, Aligoudarz, Iran
Tien Han Chua
Affiliation:
Faculty of Electrical Engineering, Wireless Communication Center, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia. Phone: + 60172793063
*
Corresponding author: A. Moradikordalivand Email: [email protected]
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Abstract

In this paper a wideband multi-input multi-output (MIMO) antenna system for WiFi-LTE wireless access point (WAP) application is proposed. The MIMO antenna system consists of two common element microstrip-fed monopole antennas with dual polarization. Physically closed integration of MIMO antenna elements requires a special technique to increase the isolation between the antennas. A novel structure of parasitic element is introduced to improve the isolation between the antennas. The proposed MIMO antenna system is simulated and optimized using CST Microwave Studio. The designed antenna system is fabricated and measured to verify the simulation results. Reflection coefficient of less than −10 dB and isolation more than 15 dB are achieved in the operating frequency range of 2.3–2.9 GHz which covers WiFi 2.4 GHz and LTE 2.6 GHz bands. The proposed system also provides dual polarization with 10 dB polarization diversity gain and envelope correlation coefficient less than 0.15. Each individual antenna has a gain of 5.1 dB and 68% efficiency.

Keywords

IsolationMicrostrip-fedMultiple-input multiple-outputParasitic elementPrinted monopole antenna
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 3: Journee Nationale des Micro-ondes (JNM) 2015 , May 2016 , pp. 643 - 650
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2015 

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