Diversity characteristics of four-element ring slot-based MIMO antenna for sub-6-GHz applications

This paper proposes four-ring slot resonator-based MIMO antennas of 75×150 mm2 without and with CSRR structures in the sub-6-GHz range. These orthogonal-fed antennas have shown diverse characteristics with dual polarization. L-shaped parasitic structures have increased the isolation (i.e., >40 dB...

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Bibliographic Details
Published inETRI journal Vol. 45; no. 4; pp. 581 - 593
Main Authors Vipul Kaushal, Amit Birwal, Kamlesh Patel
Format Journal Article
LanguageKorean
Published 한국전자통신연구원 31.08.2023
ETRI
Subjects
ECC
MIMO antenna
channel capacity loss
S-parameters
TARC
MEG
sub-6 GHz
mutual coupling
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Summary:This paper proposes four-ring slot resonator-based MIMO antennas of 75×150 mm2 without and with CSRR structures in the sub-6-GHz range. These orthogonal-fed antennas have shown diverse characteristics with dual polarization. L-shaped parasitic structures have increased the isolation (i.e., >40 dB) in the single-element antenna over the band of 3.4 GHz-3.8 GHz. A set of three CSRR structures in the MIMO antenna reduced the coupling between antenna ports placed in an inline arrangement and enhanced the isolation from 12 dB to 20 dB and the diversity characteristics. The S-parameters of both MIMO antennas are measured and used to evaluate MIMO parameters like ECC, TARC, MEG, and channel capacity loss. The simulation results show the variations in the gain and directivity on exciting linear and dual polarizations. The diversity performance of the reported MIMO antennas is suitable for 5G applications.
Bibliography:KISTI1.1003/JNL.JAKO202364360059601
ISSN:1225-6463
2233-7326