Mutual Coupling Reduction in 5G Multiple Input Multiple Output Microstrip Patch Antenna

Bilal Ur Rehman; Jabir Ullah; Bilal Ahmad; Maaz Ullah; Kifayat Ullah Bangash; Humayun Shahid; Muhammad Amir; Muhammad Iftikhar

Authors

Bilal Ur Rehman Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, University of Engineering & Technology, Peshawar, KPK, Pakistan.
Jabir Ullah Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, University of Engineering & Technology, Peshawar, KPK, Pakistan.
Bilal Ahmad Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, University of Engineering & Technology, Peshawar, KPK, Pakistan.
Maaz Ullah Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, University of Engineering & Technology, Peshawar, KPK, Pakistan.
Kifayat Ullah Bangash Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, University of Engineering & Technology, Peshawar, KPK, Pakistan.
Humayun Shahid Department of Telecommunication Engineering, University of Engineering & Technology, Taxila, Pakistan.
Muhammad Amir Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, University of Engineering & Technology, Peshawar, KPK, Pakistan.
Muhammad Iftikhar Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, University of Engineering & Technology, Peshawar, KPK, Pakistan.

Keywords:

5G communication, T-shaped gap, Mobile device integration, Urban communication systems, Gain enhancement

Abstract

This study delineates the design and performance assessment of a small 28 GHz single-band Multiple-Input Multiple-Output (MIMO) antenna designed for fifth-generation (5G) wireless communication systems. The proposed antenna employs T-shaped gaps among radiating elements to mitigate mutual coupling, a critical issue in compact MIMO systems. Simulation results demonstrate a significant increase in isolation, with the Return Loss (RL) improved from −17 dB to −46 dB. Furthermore, the overall radiation efficiency increases from 71.5% to 76.8%, indicating an improvement in system performance. The design incorporates polarisation variety to alleviate multipath fading, a common challenge at millimeter-wave frequencies. The proposed antenna, characterized by its exceptional isolation, improved gain, and compact design, is well suited for integration into modern mobile devices and 5G-enabled platforms, including Internet of Things (IoT) networks, autonomous systems, and densely populated urban communication environments.

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