Application of the adaptive basis functions/diagonal moment matrix technique to arrays of dielectric scatterers

An improved algorithm suitable for the analysis of arrays of dielectric scatterers using the adaptive basis functions/diagonal moment matrix (ABF/DMM) technique is proposed. The ABFs are constructed using clusters covering a whole array element and represent both electric and magnetic currents on the dielectric object. The ABFs are then used for all the array elements. The resulting MoM matrix equation is highly diagonally dominant, with the self matrices being exactly diagonal. The mutual interaction is taken into account progressively until the interaction between the elements at a certain distance from each other is negligible. Results using the conventional MoM procedure and the proposed algorithm are given, and compared in terms of memory and CPU time requirements.