Dual band two element rim based MIMO antennas with coupling manipulation for low SAR mobile handsets

Jamshed, M. A., Brown, T. W. C. and Heliot, F. (2022) Dual band two element rim based MIMO antennas with coupling manipulation for low SAR mobile handsets. Progress in Electromagnetics Research C, 119, pp. 125-134. (doi: 10.2528/PIERC22022103)

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Abstract

In this paper, the mutual coupling from a multiple-input-multiple-output (MIMO) rim antenna has been utilized to control the level of specific absorption rate (SAR), when the mobile handset comes in close contact to the human body. The proposed antenna is capable of operating at 2.1 GHz and 4.3 GHz, respectively. A periodic defective ground structure (DGS) in conjunction with diodes and capacitors are used to manipulate the coupling between antenna elements. The working of the proposed dual band antenna design is validated using the characteristic mode analysis (CMA), and the current distribution. The MIMO performance is studied by using envelope correlation coefficient (ECC) and loss in capacity analysis. The effect of hand and LCD on the antenna performance is shown. The SAR analysis shows up to 30% reduction, in comparison to the baseline value of the SAR of the proposed antenna design.

Item Type:Articles
Additional Information:This work has been funded by EPSRC under the grant agreement "EP/P005853/1: Electro- magnetic field exposure reduction/avoidance for the next generations of wireless communication systems".
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Jamshed, Dr Muhammad Ali
Authors: Jamshed, M. A., Brown, T. W. C., and Heliot, F.
College/School:College of Science and Engineering > School of Engineering > Autonomous Systems and Connectivity
Journal Name:Progress in Electromagnetics Research C
Publisher:Electromagnetics Academy
ISSN:1937-8718
Copyright Holders:Copyright © 2022 2022 The Electromagnetics Academy
First Published:First published in Progress in Electromagnetics Research C 119:125-134
Publisher Policy:Reproduced with the permission of the publisher

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