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A New Multiple Slot Antenna System for Sub 6 GHz Smartphones

Parchin, Naser Ojaroudi; Amar, Ahmed S.I.; Darwish, Mohammad; See, Chan Hwang; Abd-Alhameed, Raed A.; Almslmany, Amir; El-Hennawy, Hadia


Ahmed S.I. Amar

Mohammad Darwish

Raed A. Abd-Alhameed

Amir Almslmany

Hadia El-Hennawy


This work presents a sub-6 GHz multiple-input multiple-output (MIMO) antenna array with sufficient characteristics for mobile phone applications. At the four corners of the mobile phone mainboard, there are eight compact hook-shaped slot antennas mounted. The mainboard size of the smartphone is chosen such that it fits inside 5-inch phones or larger, the size of the antenna board is 150 mm x 70 mm. The proposed antenna design is built on an FR-4 substrate material with a thickness of 0.8 mm. For maximum area utilization purposes, the proposed antenna elements occupy a small area with respect to the whole board area. The presented MIMO smartphone antenna covers an 800 MHz bandwidth from 3.2 GHz to 4 GHz. The MIMO performance, critical characteristics of the introduced monopole antenna array design, and the impact of the user's hand on the radiation pattern are studied. The reflection coefficient (Snn) of the designed MIMO monopole array is below-10 dB. The reported radiation efficiency characteristic is higher than 85%, and a total efficiencies level is more than 60% as well. The values of the envelope correlation coefficient (ECC) are quite low. The obtained results make the presented MIMO antenna a very good candidate for 5G sub-6 GHz applications.

Presentation Conference Type Conference Paper (Published)
Conference Name 2022 International Telecommunications Conference (ITC-Egypt)
Start Date Jul 26, 2022
End Date Jul 28, 2022
Acceptance Date Apr 20, 2022
Online Publication Date Aug 19, 2022
Publication Date 2022
Deposit Date Sep 6, 2022
Publisher Institute of Electrical and Electronics Engineers
Book Title 2022 International Telecommunications Conference (ITC-Egypt)
Keywords 5G; MIMO; mobile-phone applications; slot antenna; sub 6 GHz spectrum
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