Advances in EM modeling of complex and electrically large structures

摘要

In the first part the paper describes general method for analysis of arbitrary structures made of conductors and part by part homogeneous materials in the frequency domain. Formulation of the problem is based on surface equivalence principle. The unknown quantities, surface electric and magnetic currents and charges are determined by application of the Galerkin method to field integral equations (PMCHW+EFIE). Geometrical modelling is performed by right truncated cones (for wires) and bilinear surfaces (for plates and dielectric surfaces). Approximation of currents is performed using polynomial entire-domain expansions that automatically satisfy continuity of currents and ends and junctions. In the second part the paper considers advanced techniques for efficient analysis of electrically large structures. In particular, out-of-core solution, parallelization, smart reduction of expansion orders and iterative and MLFMM techniques are presented with more details.