Ultra-compact 4-port MIMO antenna with defected ground structure and SAR analysis for 28/38 GHz 5G mobile devices

Al Gburi, Ahmed Jamal Abdullah and Elabd, Rania Hamdy (2024) Ultra-compact 4-port MIMO antenna with defected ground structure and SAR analysis for 28/38 GHz 5G mobile devices. Journal of Electromagnetic Waves and Applications, 38 (9). pp. 1000-1025. ISSN 0920-5071

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Abstract

To tackle the challenge of keeping 5G mobile devices compact while supporting millimeter-wave bands, we've created an ultra-compact 4-port dual-band MIMO antenna with a defected ground structure (DGS). This design minimizes mutual coupling and covers a broad frequency range. Built on a Rogers TMM4 substrate with dimensions of 17.76×17.76 mm2, the antenna includes four planar patch antennas positioned perpendicularly at the corners. Each antenna operates at 28/38 GHz and features a rectangular patch with four rectangular slots and a full ground plane. The patches are separated by 0.5 λo, with the DGS further reducing mutual coupling. Both simulations and measurements indicate a significant reduction in mutual coupling (−39 to −60 dB), improving ECC, TARC, MEG, and DG. Time-domain and SAR analyses confirm the antenna's efficiency and its suitability for 5G devices.

Item Type:	Article
Uncontrolled Keywords:	4-port; 5G, Defected ground structure (DGS), Equivalent circuit model, Millimeter-wave, Mobile devices, Multiple-input multiple-output (MIMO), Mutual coupling (MC)
Divisions:	Faculty Of Electronics And Computer Technology And Engineering
Depositing User:	Sabariah Ismail
Date Deposited:	25 Jul 2024 10:50
Last Modified:	25 Jul 2024 10:50
URI:	http://eprints.utem.edu.my/id/eprint/27431
Statistic Details:	View Download Statistic

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