engleski

Modeling Cascaded Cylindrical Metasurfaces with Spatially-Varying Impedance Distribution

Modeling curved metasurface structures repre-sents a computing challenge due to the complexity of con-sidered designs. This creates a need for specialized effi-cient analysis methods. An approach that combines the spectral-domain field representation and surface sheet impedance concept is proposed. The considered cascaded cylindrical metasurface structures can span across only a part of a canonical surface and unit cell elements can vary along the metasurface, giving a spatially-varying sheet impedance. The analysis method is experimentally verified against a cylindrical metasurface for shaping the feed antenna beam. The problem of manufacturing curved metasurfaces is also discussed in the paper.

metasurfaces, curved metasurfaces, spectral domain approach, sheet impedance, metasurface production technology, high-frequency conductive materials

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