Combination of multipole and macro basis function approaches for the analysis of finite arrays with dielectric elements

Scattering by finite arrays of dielectric elements is analyzed numerically. This is carried out efficiently with the help of a macro basis functions approach. We show how the reduced Method of Moments (MoM) matrix can be computed very fast with the help of multipole decompositions. The complexity of the method is outlined, and simulation examples are shown for scattering by arrays of dielectric spheres.