Scattering from arbitrarily shaped microstrip patch antennas using the theory of characteristic modes

A full-wave MoM solution to the problem of plane wave scattering by an arbitrarily shaped patch printed on a dielectric slab, using the theory of characteristic modes, is presented. Computed current distributions for the microstrip patch are presented. The method proposed seems promising for the exact analysis of arrays of microstrip antennas reducing the number of unknowns and the corresponding computational effort.