Simulation of Two-dimensional Propagation Problems involving Metasurfaces using a Surface Integral Equation Solver

A two-dimensional computational framework is developed to simulate metasurfaces embedded inside a propagation environment that also includes other scatterers. The proposed framework models metasurfaces as infinitely thin sheets within a surface integral equation solver. Tangential components of the electromagnetic fields on each side of this sheet, which are related via the generalized sheet transition conditions, are the unknowns of the interior and exterior equivalent problems. On other surfaces of the scatterers, which are not covered by a metasurface, continuity of the tangential electromagnetic fields is enforced. Numerical experiments demonstrate the applicability of the proposed computational framework.