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An innovative antenna array with high inter element isolation for sub-6 GHz 5G MIMO communication systems
Univ Carlos III Madrid, Dept Signal Theory & Commun, Madrid 28911, Spain..
London Metropolitan Univ, Ctr Commun Technol, Sch Comp & Digital Media, London N7 8DB, England..
London Metropolitan Univ, Ctr Commun Technol, Sch Comp & Digital Media, London N7 8DB, England..
Amman Arab Univ, Fac Aviat Sci, Amman 11953, Jordan..
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2022 (English)In: Scientific Reports, E-ISSN 2045-2322, Vol. 12, no 1, article id 7907Article in journal (Refereed) Published
Abstract [en]

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 x 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.

Place, publisher, year, edition, pages
NATURE PORTFOLIO , 2022. Vol. 12, no 1, article id 7907
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering Telecommunications Computer Systems
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URN: urn:nbn:se:kth:diva-313071DOI: 10.1038/s41598-022-12119-2ISI: 000795163100120PubMedID: 35550585Scopus ID: 2-s2.0-85130015008OAI: oai:DiVA.org:kth-313071DiVA, id: diva2:1661644
Note

QC 20220530

Available from: 2022-05-30 Created: 2022-05-30 Last updated: 2023-06-08Bibliographically approved

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Dalarsson, Mariana

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