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In this paper, a fast iterative physical optics (FIPO) algorithm is proposed for analysis of scattering from electrically large objects involving multiple reflections. When the scenario to be analyzed is electrically very large, a Fast Far Field Approximation (FaFFA) algorithm, based on a domain decomposition of the scatterer surface, can be conveniently used to greatly speed-up the calculation of...
Full-wave modelling of electrically large antenna arrays made by several hundreds of elements has been one of the most challenging tasks for standard numerical techniques. In principle, the Integral Equation (IE) approach is fully appropriate to the modelling of open problems and for the analysis of complex antenna systems. Nevertheless it is well known that standard techniques are limited by the...
In this paper, we present an incremental multilevel matrix filling and sparsification scheme for the method of moment (MoM) solution of the electric field integral equation at low and very low frequencies. The proposed scheme allows a strong reduction of the memory requirements without a loss in accuracy. Numerical results show the method performance in terms of memory requirements, CPU time and accuracy...
This paper presents a systematic methodology based on the Partial Element Equivalent Circuit method to model aircrafts in order to characterize their current return network. The state-of-the-art of numerical modeling techniques for electrically large structures is used to allow accurate and fast simulations. The comparison of the numerical results with experimental data validates the procedure.
A scaled working policy and some special modelling tools/techniques are presented for the management of wide band interference problems on complex platforms, like IEMI (Intentional ElectroMagnetic Interference) or HIRF (High Intensity Radiated Field), in the frame of industrial processes.
The testing integrals used to discretize surface integral equations by application of the Moment Method are usually considered as regular ‘trivial’ integrals to be computed. This paper discusses some fundamental problems relevant to the numerical evaluation of these integrals and presents several test cases.
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