Abstract
A rigorous technique based on the transverse Wave Concept Iterative Procedure (WCIP) and a Fast Mode Transformation (FMT) is used to analyze the Frequency Selective Surface (FSS). These structures are used as filters and reflector antenna as well as deep-space exploration for multi-frequency operations. In order to initialize the iterative procedure, an incident wave is defined in spatial domain with arbitrary angle of incidence. The numerical complexity is studied and compared to the classical MoM. The good agreement between simulated and published data justifies the design procedure.