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Four-element MIMO antenna for X-band applications

Published online by Cambridge University Press:  07 January 2021

Ali Eslami Open the ORCID record for Ali Eslami [Opens in a new window] ,
Javad Nourinia Open the ORCID record for Javad Nourinia [Opens in a new window] ,
Changiz Ghobadi  and
Majid Shokri Open the ORCID record for Majid Shokri [Opens in a new window]
Ali Eslami*
Affiliation:
Department of Electrical Engineering, Urmia University, Urmia, Iran
Javad Nourinia
Affiliation:
Department of Electrical Engineering, Urmia University, Urmia, Iran
Changiz Ghobadi
Affiliation:
Department of Electrical Engineering, Urmia University, Urmia, Iran
Majid Shokri
Affiliation:
Department of Electrical Engineering, Urmia University, Urmia, Iran
*
Author for correspondence: Ali Eslami, E-mail: [email protected]
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Abstract

This study presents a new design of a four-element multiple-input multiple-output (MIMO) antenna, which is suitable for X-band applications. The circular polarization (CP) operation in this work is attained by using Tai Chi-shaped patches and L-shaped feeds. The proposed four-element MIMO antenna achieves two resonant frequencies, the first one at around 7.75 GHz and the second one with CP radiation is at approximately 10.15 GHz frequency. The measured isolations between ports with 46.7 × 46.7 mm2 total dimensions are <−20 dB. Due to the experiments, the envelop correlation coefficient for the orthogonal and parallel ports of the proposed MIMO antenna is <0.003 and 0.005, respectively. Additionally, the presented antenna has a circularly polarized performance in the frequency band of 9.75–10.41 GHz and the average realized peak gain almost 2 dBic. The investigated antenna in this work is fabricated and tested in which the results are in a good agreement.

Keywords

Circular polarizationMIMO antennaX-band
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 13 , Issue 8 , October 2021 , pp. 859 - 866
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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