Isolation Enhancement Techniques for MIMO Antenna: A Review

Bakale, Ravindra S.; Nandgaonkar, Anil; Deosarkar, S. B.

doi:10.1109/icsidempc49020.2020.9299655

Cited by 2 publications

(1 citation statement)

References 22 publications

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“…In recent years, significant attention has been paid to mitigating mutual coupling interference in a multiple antenna system [1,3,[7][8][9][10]. For this purpose, many decoupling techniques have been proposed: decoupling networks [9,[11][12][13], neutralization lines [2,14], parasitic resonant elements [15], defected ground structures [16], pattern diversity [1,17], metamaterials [18][19][20][21][22] and others [10,23,24].…”

Section: Introductionmentioning

confidence: 99%

Low-Profile FSS Design Methodology to Increase Isolation between Vehicle-Borne Multifrequency Antennas

et al. 2023

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The present work describes a new approach for the design of a Frequency-Selective Surface (FSS) in the context of frequency filters to increase isolation between two vehicle-borne antennas. A compact FSS design based on nested square meandered resonators is optimized for multifrequency operation. Furthermore, a design workflow is proposed. In general, the measurement of low-profile FSS does not correspond to simulation through Floquet modes based on periodic boundary conditions due to the lack of uniformity of mutual coupling among the FSS unit cells. The proposed method demonstrates the agreement between the infinite simulation and the measurement of the finite prototype once a convenient scale factor is applied, which facilitates the design workflow. In this case, an FSS is used as an efficient filter to increase the isolation between antennas by 6 dB in three representative bands (3GPP, WiFI I and II). In this way, multifrequency antennas can be placed at approximately half their actual distance with the same performance in spatial-constrained vehicular environments.

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