Insightful circuit modeling of FSS with arbitrary scatterers

A physical insightful and quasi-analytical circuit model is here proposed in order to characterize frequency selective surfaces composed by scatterers/apertures of arbitrary geometry. The present work is an extension of the approach previously proposed by some of the authors that dealt only with simple dipole-based periodic surfaces. In order to account for scatterers of more complex shape, their current profile is extracted from a full-wave tool at a single frequency. Our numerical results are validated through comparison with commercial simulators as well as with previously proposed circuit-model approaches.