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Abstract
A 4*4 multiple-input multiple-output (MIMO) antenna with compact size and good isolation is presented for UWB applications. The concept of polarization diversity is here discussed and employed to satisfy contemporary wireless communication systems requirements. In the proposed antenna, the utilization of a novel circular ripple-shaped decoupling structure and a matching structure are presented to minimize mutual coupling of the inter-elements and enhance adaptation. Experimental results show a bandwidth range from 2.96 to 11.4 GHz with a good reflection coefficient which is S11 < −12 dB, high isolation S21 and S31 < −20 dB, good Envelope Correlation Coefficients ECC21 and ECC31 < 0.03, Diversity Gain DG21 and DG31 equal to 8.75, and a Total Active Reflection Coefficient (TARC) less than −12 dB. The antenna also exhibits a maximum gain of about 4 dBi with a maximum efficiency of 70% which proves that this antenna is a potential candidate for UWB applications.
Acknowledgements
This research was partially supported by National School of Applied Sciences, under sciences and advanced technologies laboratory, Abdelmalek Essaadi University, Tetuan, Morocco.
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All data generated during this study are included in this published article.
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No potential conflict of interest was reported by the author(s).
Correction Statement
This article has been republished with minor changes. These changes do not impact the academic content of the article.
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Notes on contributors
Aicha Mchbal
Aicha Mchbal is a phd student, her doctoral research invetigates the enhancement of MIMO antenna performances, she holds a master's degree in telecommunication systems enginneering from the abdelmalek essaadi university of Tetuan,Morocco.she authored the article “mutual coupling reduction using a protruded ground branch structure in a compact UWB owl-shaped MIMO antenna.
Naima Amar Touhami
Naima Amar Touhami received DESA in instrumentation and electronics, also she received phD degrees in electronics and telecommunication from abdelmalek essaadi university in 2002 and 2009, respectively. She received the AECID scholarship from the Spanish ministry of forein affairs (2005–2008) and she participated in several research projects.currently she is a professor of electronics and telecommunications at abdelmalek essaadi university and a member of EIRT.SHE has supervised Master and Bachelor's students. She has over than twenty journal papers and forty conference papers. She has participated in several conferences and events organization. Her research interests include synthesis od advanced high performance active and passive circuits such as antennas, filters, diplexer, amplifier, mixer.
Hanae Elftouh
Hanae Elftouh was born in 1987, Tetuan, Morocco. She received a master degree in telecommunication systems engineering from abdelmalek essaadi university of Tetuan, Morocco in 2010. She received a phd degree in microwave circuits in 2016 at the same university. Her research interests mainly on miniaturization of printed microwave circuits (antennas and filters). She has authored and co-authored several papers in different indexed journals and conferences in microwave communications technology field.
Aziz Dkiouak
Aziz Dkiouak was born in December 1985, in Tayjoute town, 30 Km from Chefchaouen, Morroco. He received the Master's degree in Electronics and Telecommunications at the Faculty of Sciences, Abdelmalek Essaadi University, Tetouan, Morocco in 2010. He is currently working on a Ph.D. degree and His research focuses on the design and realization of MIMO antennas with low mutual coupling for wireless applications.