A Comprehensive Survey on "Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems"
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This paper surveys various techniques for reducing mutual coupling in antenna arrays used in Synthetic Aperture Radar (SAR) and Multiple-Input Multiple-Output (MIMO) systems. It focuses on methods employing metamaterials (MTM) and metasurfaces (MTS) to improve isolation between antenna elements, ultimately enhancing system performance by minimizing interference.
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Scientists found that when many radio antennas are close, they can confuse each other. They discovered special materials that act like tiny walls to stop the confusion, making the antennas hear clearer and work much better.
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This work was supported in part by the Ministerio de Ciencia, Innovación y Universidades, Gobierno de España (MCIU/AEI/FEDER,UE) under Grant RTI2018-095499-B-C31, in part by the Innovation Programme under Grant H2020-MSCA-ITN-2016 SECRET-722424, and in part by the U.K. Engineering and Physical Sciences Research Council (EPSRC) under Grant EP/E022936/1.
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This comprehensive survey offers a valuable overview of various decoupling techniques for antenna arrays in SAR and MIMO systems, with a particular focus on metamaterial and metasurface approaches. The paper covers a wide range of techniques and provides a good starting point for researchers interested in this area. However, it could be improved by including a more detailed comparative analysis, practical examples, and a discussion of future research directions.
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