Numerical advances in the full-wave analysis of periodic multilayered structures with application to reflectarray antennas

A novel hybrid spectral-spatial method of moments (MoM) approach is introduced for the analysis of multilayered periodic structures containing either patches or dipoles in the unit cell. The novel hybrid MoM approach and the pure spectral MoM approach are both applied to the analysis and design of reflectarray antennas made of patches or dipoles under the local periodicity assumption. The results indicate that the hybrid approach is always at least one order of magnitud faster than the spectral approach in the analysis and design of the antennas.