A Macrobasis Function Model for Characterizing Finite Large-Area Metamaterials

An acceleration technique for the MoM solution of large-area metamaterial arrays is proposed that relies on numerical extraction of the modal profile associated with the individual array elements followed by projection of the global system equations onto a judiciously constructed reduced solution space. To further enhance the performance of the underlying MoM computations an IE-FFT engine is developed that is adapted for the underlying JMCFIE formulation and higher order quadrilateral discretization. A number of large-area metamaterial arrays are solved and the computational statistics are presented to reflect the advantage of the the proposed methodology.