Dual circular slot ring triple-band MIMO antenna for 5G applications

Anand Kumar; Santosh Kumar Mahto; Rashmi Sinha; Arvind Choubey

doi:10.1515/freq-2020-0138

Published by De Gruyter December 14, 2020

Dual circular slot ring triple-band MIMO antenna for 5G applications

Anand Kumar , Santosh Kumar Mahto , Rashmi Sinha and Arvind Choubey

From the journal Frequenz

https://doi.org/10.1515/freq-2020-0138

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Abstract

A Triple-band Multiple-Input-Multiple-Output (MIMO) antenna for 5G mobile terminal applications is proposed in this paper. The design comprises four-port/two resonators, each having two concentric circular slot ring radiators etched on a ground plane of size 50 mm × 50 mm. The antenna is fed by perpendicularly arranged 50 Ω microstrip line feeds on the top layer. Decoupling techniques were used to suppress mutual coupling between the two resonators. The perpendicular arrangement of the feed lines and port reduces mutual coupling between the two ports and increases isolation. The antenna operates in multiple bands: 3.35–3.69 GHz, 24–28 GHz, and 37–40 GHz frequency range with central frequencies at 3.5 GHz, 26 GHz, and 38 GHz, respectively allocated for 5G. The antenna provides a gain of 2.7–7.8 dB and a radiation efficiency of 0.49–0.85 in the operating bands. Diversity performance is studied in terms of the Envelop Correlation Coefficient (ECC), Diversity Gain (DG), and Total Active Reflection Coefficient (TARC) were found to be less than 0.01, greater than 9.99 dB, and less than −10 dB respectively. The proposed antenna offers good S-parameters, voltage standing wave ratio (VSWR), TARC, radiation pattern, high gain, and low ECC. The antenna was fabricated and tested. The measured results and simulated results are in good agreement. It possesses sufficient potential for 5G mobile terminal and smart wearable applications.

Keywords: antenna; defective ground structure (DGS); 5G; multiple-input-multiple-output (MIMO)

Corresponding author: Anand Kumar, Department of Electronics Engineering, IIT (ISM), Dhanbad, India, E-mail: anandkumar.2307@gmail.com

Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2020-08-26

Accepted: 2020-11-30

Published Online: 2020-12-14

Published in Print: 2021-03-26

Dual circular slot ring triple-band MIMO antenna for 5G applications

Abstract

References

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