Analysis of scattering from complex, electrically large structures using the generalized method of moments

This paper analyses scattering from PEC structures using a novel methodology based on the Generalized Method of Moments (GMM). The GMM has been introduced as a framework that permits a useful decoupling between the basis functions and the underlying tessellation, a feature that has been the hallmark of the standard Rao-Wilton-Glisson (RWG) basis scheme. This paper extends this method, to include a locally smooth approximation, that accepts any geometry description, from point clouds to standard triangulations. The scheme detailed here has the ability to construct patches of arbitrary sizes and corresponding basis functions, enabling the easy analysis of very complex, realistic geometries. Results will be presented that validate the method and showcase its advantages.