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Modified ground and slotted MIMO antennas for 5G sub-6 GHz frequency bands

Published online by Cambridge University Press:  11 July 2022

Neetu Agrawal ,
Manish Gupta  and
Sanjay Chouhan Open the ORCID record for Sanjay Chouhan [Opens in a new window]
Neetu Agrawal
Affiliation:
Department of Electronics and Communication Engineering, GLA University, Mathura, India
Manish Gupta*
Affiliation:
Department of Electronics and Communication Engineering, GLA University, Mathura, India
Sanjay Chouhan
Affiliation:
Department of Electronics and Communication Engineering, Jawaharlal Institute of Technology, Khargone, Borawan, India
*
Author for correspondence: Manish Gupta, E-mail: dr.manish.ece@gmail.com
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Abstract

Multiple input multiple output (MIMO) systems, which use multiple antennas to deliver faster data rates, are one of the promising methods in 5G services. 5G is a popular issue among the world's main telecom firms currently. The sub-6 GHz band for 5G applications in various countries lies between 3 and 5 GHz. The sub-6 GHz 5G bands are 3.4–3.8 GHz in Europe, 3.1–3.55 GHz in the USA, and 3.3–3.6 GHz and 4.8–4.99 GHz in China. This paper presents a two-element slotted octagon-shaped antenna operating in the sub-6 GHz band (3.1–4.5 GHz) for 5G applications. A T-formed isolation structure is placed at a ground plane to minimize mutual coupling between MIMO antennas. The proposed MIMO antenna has physical dimensions of 55 × 38 mm2 and an envelope correlation coefficient or correlation of 0.0004 over the entire operating band. The antenna operates at 3.6 GHz, with a return loss of 40.8 dB at the resonance. An antenna prototype has been investigated and proven to be of excellent quality in terms of performance like isolation >20 dB, efficiency >80%, and mean effective gain <−3 dB over the full operating band.

Keywords

MIMO antennaECCMEG5G application
Type
Antenna Design, Modeling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Issue 5 , June 2023 , pp. 817 - 825
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Copyright
© The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association

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