Vol. 119

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2022-03-24

Dual Band Two Element Rim Based MIMO Antennas with Coupling Manipulation for Low SAR Mobile Handsets

By Muhammad Ali Jamshed, Tim W. C. Brown, and Fabien Héliot
Progress In Electromagnetics Research C, Vol. 119, 125-134, 2022
doi:10.2528/PIERC22022103

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.

Citation


Muhammad Ali Jamshed, Tim W. C. Brown, and Fabien Héliot, "Dual Band Two Element Rim Based MIMO Antennas with Coupling Manipulation for Low SAR Mobile Handsets," Progress In Electromagnetics Research C, Vol. 119, 125-134, 2022.
doi:10.2528/PIERC22022103
http://www.jpier.org/PIERC/pier.php?paper=22022103

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