Abstract
In this paper, metasurface-based antennas have been analyzed by multilevel Green's function interpolation method (MLGFIM). Layered medium Green's function is used as the kernel to efficiently reduce the number of unknowns. Interpolation of this type of Green's function is then implemented by radial basis functions (RBFs). The interpolation accuracies using Lagrange and RBF interpolations have been compared. A numerical example of a holographic antenna has been given to validate the accuracy and efficiency of the proposed method.
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