High gain triple-band metamaterial-based antipodal Vivaldi MIMO antenna for 5G communications

Saeidi, T., Ismail, I., Noghanian, S., Alhawari, A. R.H., Abbasi, Q. H. , Imran, M. A. , Zeain, M.Y. and Ali, S. M. (2021) High gain triple-band metamaterial-based antipodal Vivaldi MIMO antenna for 5G communications. Miscromachines, 12(3), 250. (doi: 10.3390/mi12030250)

Abstract

This paper presents a miniaturized dual-polarized Multiple Input Multiple Output (MIMO) antenna with high isolation. The antenna meets the constraints of sub-6 GHz 5G and the smartphones’ X-band communications. A vertically polarized modified antipodal Vivaldi antenna and a horizontally polarized spiral antenna are designed and integrated, and then their performance is investigated. Three frequency bands of 3.8 GHz, 5.2 GHz, and 8.0 GHz are considered, and the proposed dual-polarized antenna is studied. High isolation of greater than 20 dB is obtained after integration of metamaterial elements, and without applying any other decoupling methods. The proposed triple-band metamaterial-based antenna has 1.6 GHz bandwidth (BW) (2.9 GHz–4.5 GHz), 13.5 dBi gain, and 98% radiation efficiency at 3.8 GHz. At 5.2 GHz it provides 1.2 GHz BW, 9.5 dBi gain, and 96% radiation efficiency. At 8.0 GHz it has 1 GHz BW, 6.75 dBi gain, and 92% radiation efficiency. Four antenna elements (with eight ports) were laid out orthogonally at the four corners of a mobile printed circuit board (PCB) to be utilized as a MIMO antenna for 5G communications. The performance of the MIMO antenna is examined and reported.

• Item Type: Articles
• Additional Information: The financial support and access to the laboratory facilities given by Universiti Teknologi PETRONAS are acknowledged.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Abbasi, Professor Qammer and Imran, Professor Muhammad
• Authors: Saeidi, T., Ismail, I., Noghanian, S., Alhawari, A. R.H., Abbasi, Q. H., Imran, M. A., Zeain, M.Y., and Ali, S. M.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering; College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: Miscromachines
• Publisher: MDPI
• ISSN: 2072-666X
• ISSN (Online): 2072-666X
• Published Online: 28 February 2021
• Copyright Holders: Copyright © 2021 The Authors
• First Published: First published in Micromachines 12(3): 250
• Publisher Policy: Reproduced under a Creative Commons License