Numerical analysis of finite antenna arrays using the Domain Green´s Function Method

This paper considers the efficient numerical analysis of arbitrary finite antenna array structures using the Domain Green´s Function Method (DGFM). The DGFM is implemented in the comprehensive 3D electromagnetic field solver, FEKO [1], and uses the Method-of-Moments (MoM) formulation. The technique is based on that initially presented in [2] and is a perturbation approach where mutual coupling between antenna array elements is accounted for during the formulation of the Green´s function for each element. The DGFM takes into account the edge effects attributed to the finite size of the array, complex excitations with non-linear phase shift and is not limited to periodic array configurations.