Inverse Design of Metasurface Antennas

This work addresses the inverse design of metasurface antennas through a physically consistent synthesis of tensorial surface reactance profiles. The method relies on solving the Electric Field Integral Equation (EFIE) via the Method of Moments (MoM), assuming an anti-Hermitian tensor surface reactance to ensure passive and reciprocal implementation. A key challenge in this context is recovering a finite-aperture current distribution that radiates a given far-field pattern, i.e. generates a given spectrum over the visible region, despite the inherent ambiguity due to the unspecified spectral content outside this region.