A fast technique for Finite Array analysis applicable to metallic as well as printed antennas is proposed using an Infinite Array approach. In view of that, the Dyadic form of Periodic Array Green's function for the case of dielectric medium are computed in spectral domain. The extraction of the periodic singularities is carried out by subtracting the contribution from an Infnite Array solution for an average medium in space-spectral domain with exponential convergence
Jha, S. N., Ozdemir, N. A., Craeye, C., & et al. (2011). On the Relationship between Finite and Infinite Arrays in the Context of Radiation and Scattering Problems. Progress in Electromagnetics Research Symposium (PIERS 2011), Marrakesh (Morocco). https://hdl.handle.net/2078.5/227574