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High isolation and compact MIMO antenna system with defected shorting wall

Published online by Cambridge University Press:  24 April 2014

Xi-Wang Dai Open the ORCID record for Xi-Wang Dai [Opens in a new window] ,
Long Li ,
Zhen-Ye Wang  and
Chang-Hong Liang
Xi-Wang Dai*
Affiliation:
National Laboratory of Science and Technology on Antennas and Microwaves, Xidian University, Xi'an 710071, Peoples Republic of China. Phone: +86-029-88204068
Long Li
Affiliation:
National Laboratory of Science and Technology on Antennas and Microwaves, Xidian University, Xi'an 710071, Peoples Republic of China. Phone: +86-029-88204068
Zhen-Ye Wang
Affiliation:
National Laboratory of Science and Technology on Antennas and Microwaves, Xidian University, Xi'an 710071, Peoples Republic of China. Phone: +86-029-88204068
Chang-Hong Liang
Affiliation:
National Laboratory of Science and Technology on Antennas and Microwaves, Xidian University, Xi'an 710071, Peoples Republic of China. Phone: +86-029-88204068
*
Corresponding author: X.-W. Dai Email: [email protected]
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Abstract

In this paper, a compact multiple-input multiple-output (MIMO) antenna system with high isolation is proposed for 2.4 GHz wireless local area network (WLAN) application. The system is composed of two aperture-coupled shorted patch antennas with a spacing of 4 mm (only 0.032λ). The antenna is fed with an H-shaped coupling slot, and the defected shorting wall is used for high isolation. The proposed MIMO system exhibits an isolation of better than −20 dB and a maximum isolation of −43 dB at the central frequency. The envelope correlation coefficient is less than 0.01. The simulated and measured results show that the proposed antenna is a good candidate for MIMO system with higher isolation and better diversity.

Keywords

High isolationDefected shorting wallAperture-coupled
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 7 , Issue 2 , April 2015 , pp. 167 - 172
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2014 

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References

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