Unit-cell driven deterministic inverse design of metasurface antennas

This contribution presents a metasurface (MTS) design carried on with a current-only optimization approach. The standard MTS optimization in literature treats the impedance profile as continuous, with subsequent sampling at the center of unit cells. Here, optimization is carried out dividing the MTS surface into isolated subdomains that correspond to the intended unit cells, which will make the final unit cell designed easier. This is compared to the case in which the impedance profile is treated as continuous; results show that the synthesized impedance profile and the resulting radiation pattern are comparable, thus paving the way to a better design of the overall MTS