New Self-Isolated Wideband MIMO Antenna System for 5G mm-Wave Applications using Slot Characteristics

Oludayo Sokunbi, Hussein Attia, Abubakar Hamza, Atif Shamim, Yiyang Yu, Ahmed Kishk

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


This paper proposes a simple novel technique for self-isolating a MIMO antenna for mm-wave applications. MIMO antenna elements with inter-element separation of 0.2 mm (0.023λ at 35 GHz) and measured high isolation (> 50 dB) are presented. By observing the concentration of surface waves on the radiating patch, several rigorously optimized slots of different shapes, positions, and dimensions are etched on the patch to enhance the inter-element isolation and increase the bandwidth within 28-37.5 GHz. The circuit models of the reference and proposed antennas have been presented. The coupling is measured by the level of the differences in the output voltage in both antennas. The novel mm-wave antenna exhibits high impedance bandwidth (> 29%), high isolation (> 50 dB), high efficiency (> 90%), and low envelope correlation coefficient (
Original languageEnglish (US)
Pages (from-to)1-1
Number of pages1
JournalIEEE Open Journal of Antennas and Propagation
StatePublished - Jan 5 2023

Bibliographical note

KAUST Repository Item: Exported on 2023-01-09
Acknowledgements: This paper is based upon work supported by King Fahd University of Petroleum & Minerals (KFUPM). The authors at KFUPM acknowledge the Interdisciplinary Research Center for Communication Systems and Sensing for the support received under Grant no. INCS2106. The authors acknowledge Mr Sagiru Gaya from Khalifa University for the valuable discussions during this work.


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