Efficient Analysis of Planar, Arbitrarily Shaped, and (Bi)-Anisotropic Metasurface Antennas

An efficient method of moments (MoM) scheme is presented for the analysis of planar, possibly cascaded metasurfaces (MTSs) implementing high-impedance surfaces. The MTS can be designed on an arbitrarily shaped domain and is accounted for as a set of cascaded electric sheet impedances. In the proposed method, the shaped MTS is included in a larger rectangular domain meshed with rooftop basis functi...