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Eight-port multiband MIMO antenna design with high isolation for 5G smartphones

Published online by Cambridge University Press:  07 November 2024

A. Vincy Lumina ,
Sangeetha Manoharan Open the ORCID record for Sangeetha Manoharan [Opens in a new window]  and
Sachin Kumar
A. Vincy Lumina
Affiliation:
Department of Electronics and Communication Engineering, SRM Institute of Science and Technology, Kattankulathur, India
Sangeetha Manoharan*
Affiliation:
Department of Electronics and Communication Engineering, SRM Institute of Science and Technology, Kattankulathur, India
Sachin Kumar
Affiliation:
Department of Electronics and Communication Engineering, SRM Institute of Science and Technology, Kattankulathur, India
*
Corresponding author:Sangeetha Manoharan;Email: [email protected]
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Abstract

This paper presents the design and analysis of a compact eight-port multiband multiple-input–multiple-output (MIMO) antenna for 5G smartphones. The proposed antenna structure is designed using meandering elements, as radiator, on the FR4 substrate of 150 × 80 × 0.8 mm with loss tangent (tan δ) of 0.02 and relative permittivity (εr) of 4.4. The proposed antenna resonates at 2.4, 3.5, and 5.5 GHz, and it covers the bandwidth of 2%, 6.28%, and 2.53%, respectively. The measured results provide an omnidirectional radiation pattern with 58%–78% of efficiency in all operating bands. The eight-port multiband MIMO design provides a high isolation of 17.5 dB, envelope correlation coefficient < 0.04, diversity gain of 9.98 dB, total active reflection coefficient < −10 dB, and channel capacity loss of <0.25 bits/s/Hz. Also, the hand phantom is designed to analyze the reflection coefficients and efficiency of the proposed antenna.

Keywords

hand phantomisolationmeandered radiatormultiband antennasmartphones
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 16 , Issue 8 , October 2024 , pp. 1316 - 1330
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Copyright
© The Author(s), 2024. Published by Cambridge University Press in association with The European Microwave Association.

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