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Investigation of 10-port coupled fed slotted MIMO antenna system for 5G mobile handset

Published online by Cambridge University Press:  22 July 2021

D. Rajesh Kumar ,
G. Venkat Babu Open the ORCID record for G. Venkat Babu [Opens in a new window] ,
K.G. Sujanth Narayan  and
N. Raju
D. Rajesh Kumar
Affiliation:
Centre of Excellence in RF System Engineering, SASTRA Deemed to be University, Thanjavur, Tamilnadu, India
G. Venkat Babu*
Affiliation:
Centre of Excellence in RF System Engineering, SASTRA Deemed to be University, Thanjavur, Tamilnadu, India
K.G. Sujanth Narayan
Affiliation:
Centre of Excellence in RF System Engineering, SASTRA Deemed to be University, Thanjavur, Tamilnadu, India
N. Raju
Affiliation:
Centre of Excellence in RF System Engineering, SASTRA Deemed to be University, Thanjavur, Tamilnadu, India
*
Author for correspondence: G. Venkat Babu, E-mail: venkatbabu@ece.sastra.edu
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Abstract

A dual-band 10-port multiple input multiple output (MIMO) antenna array for 5G smartphone is proposed. Each antenna in the MIMO system can work from 3.4 to 3.6 GHz and 5 to 6 GHz with 10 dB (2:1 VSWR) impedance bandwidth. Nevertheless, for a 3:1 VSWR, the antenna operates from 3.3 to 3.8 GHz and 4.67 to 6.24 GHz. The MIMO system is formed by making 10 seven-shaped coupled fed slot antenna elements excited at two different resonant modes and integrated into the system circuit board. By implementing the spatial and polarization diversity techniques, high isolation better than 28 dB between any pair of antenna elements is achieved. The proposed 10-port MIMO antenna array is fabricated and measured. Significant radiation efficiency is obtained, ranging from 65 to 82% for both bands. The antenna gain in the required operating band is substantial, around 3–3.8 dBi. Further, the MIMO parameters such as envelope correlation co-efficient, channel capacity, and total active reflection co-efficient are calculated. The antenna's robustness is estimated by analyzing the user hand effects and specific absorption rate (SAR). The measured results are well agreed with the simulated results.

Keywords

5Gchannel capacityMIMOSARWLAN
Type
Antenna Design, Modelling and Measurements
Information
International Journal of Microwave and Wireless Technologies , Volume 14 , Issue 7 , September 2022 , pp. 892 - 905
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Copyright
Copyright © The Author(s), 2021. Published by Cambridge University Press in association with the European Microwave Association

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