Date of Award

5-7-2024

Document Type

Thesis

School

School of Electrical & Electroncis Engineering

Programme

Ph.D.-Doctoral of Philosophy

First Advisor

Dr.G.Venkat Babu

Keywords

5G, Mobile Phone, Multi Input, Multi Output, Antenna, Channel Capacity, Envelope Correlation Coefficient, Specific Absorption Rate

Abstract

The rapid progress of wireless communication systems has been driven by the persistent demand for higher data rates, improved connectivity, and seamless user experiences. The introduction of fifth-generation (5G) wireless technology introduces fresh challenges and possibilities within the domain of antenna design, particularly concerning Multiple-Input Multiple-Output (MIMO) systems operating in the sub-6 GHz frequency range. This thesis conducts a comprehensive exploration and conceptualization of MIMO antennas expressly crafted for smooth integration into mobile phones, with a particular emphasis on addressing the distinctive requisites of sub-6 GHz 5G communication.

The proposed antenna designs effectively harnesses the advantages inherent in multiple-input multiple-output (MIMO) technology to amplify data speeds and reliability through the utilization of spatial diversity. In response to the constraints imposed by the physical dimensions of mobile phone devices and the frequency spectrum below 6 GHz, the antennas are meticulously crafted to uphold compact forms while ensuring efficacious radiation capabilities. The design process entails thorough analysis of modelling, optimization, and assessment methodologies to attain desirable features encompassing impedance matching, radiation patterns, and reduction of the envelope correlation coefficient (ECC).

Furthermore, this research inspects the influence employed by diverse multiple-input multiple-output (MIMO) configurations specifically, 6x6 and 10x10 on the complete system performance. A thorough investigation is undertaken to measure antenna properties such as isolation, diversity gain, and channel capacity, thereby evaluating the benefits of deploying MIMO antennas in mobile devices tailored for sub-6 GHz 5G applications.

The proposed designs are validated through simulations and measurements, duly spotlighting its feasibility and appropriateness for seamless integration into commercially intended mobile devices. The findings underscore the considerable potential of the suggested MIMO antenna configuration in strengthening the capacity and reliability of sub-6 GHz 5G networks, all while navigating the limitations imposed by the physical dimensions of mobile phones. This study presents a noteworthy contribution to the ongoing efforts aimed at refining wireless communication systems, offering valuable insights into the workings of MIMO antenna design for forthcoming mobile devices operating within the sub-6 GHz frequency realm.

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