An innovative antenna array with high inter element isolation for sub-6 GHz 5G MIMO communication systems

Alibakhshikenari, Mohammad, Virdee, Bal Singh, Benetatos, Harry, Ali, Esraa Mousa, Soruri, Mohammad, Dalarsson, Mariana, Naser-Moghadasi, Mohammad, See, Chan Hwang, Pietrenko-Dabrowska, Anna, Koziel, Slawomir, Szczepanski, Stanislaw and Limiti, Ernesto (2022) An innovative antenna array with high inter element isolation for sub-6 GHz 5G MIMO communication systems. Scientific Reports, 12 (1). pp. 1-13. ISSN 2045-2322

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Abstract / Description

Abstract: A novel technique is shown to improve the isolation between radiators in antenna arrays. The proposed technique suppresses the surface-wave propagation and reduces substrate loss thereby enhancing the overall performance of the array. This is achieved without affecting the antenna’s footprint. The proposed approach is demonstrated on a four-element array for 5G MIMO applications. Each radiating element in the array is constituted from a 3 × 3 matrix of interconnected resonant elements. The technique involves (1) incorporating matching stubs within the resonant elements, (2) framing each of the four-radiating elements inside a dot-wall, and (3) defecting the ground plane with dielectric slots that are aligned under the dot-walls. Results show that with the proposed approach the impedance bandwidth of the array is increased by 58.82% and the improvement in the average isolation between antennas #1&2, #1&3, #1&4 are 8 dB, 14 dB, 16 dB, and 13 dB, respectively. Moreover, improvement in the antenna gain is 4.2% and the total radiation efficiency is 23.53%. These results confirm the efficacy of the technique. The agreement between the simulated and measured results is excellent. Furthermore, the manufacture of the antenna array using the proposed approach is relatively straightforward and cost effective.

Item Type: Article
Additional Information: ** From Springer Nature via Jisc Publications Router
Uncontrolled Keywords: sub-6 GHz; 5G applications; multiple-input-multiple-output (MIMO) communication systems; antennas
Subjects: 600 Technology > 620 Engineering & allied operations
Department: School of Computing and Digital Media
SWORD Depositor: Pub Router
Depositing User: Pub Router
Date Deposited: 27 May 2022 11:08
Last Modified: 27 May 2022 11:08
URI: http://repository.londonmet.ac.uk/id/eprint/7629

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