MODELING OF MICROSTRIP REFLECTARRAYS USING THE CHARACTERISTIC BASIS FUNCTION APPROACH

This paper presents a Method of Moments (MoM) solution to the large-scale electromagnetic simulations of microstrip reflectarrays. A systematic procedure is outlined for the construction of entire-domain liked characteristic basis functions (CBFs) for each of the array element. Using these CBFs, the MoM matrix size can be substantially reduced as only a few basis functions are required to model the surface current on each element, making full-matrix inversion tractable for this large-scale problem.