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Calculation of shielding efficiency of a conducting spherical shell using MoM SIE based code is presented in this paper. Theorem of surface equivalence is used in order to minimize propagation of numerical error through the walls of the shell. Accuracy is further improved by using advanced matrix equilibration and special integration methods for highly accurate evaluation of MoM matrix elements. Simulation...
The paper presents a method for the efficient full wave analysis of electrically large transparent radomes. MoM SIE based code is used for the analyses and the special technique is used for reduction of number of unknown coefficients. Namely, only the part of the radome which is illuminated by main and significant side lobes is taken into account, while remaining parts are excluded from the analysis...
WIPL-D Pro is Method of Moments based simulator offering state of the art performances in full wave EM simulation. The code efficiency is based on: higher order basis functions, quadrilateral mesh, in-house optimum mesh tool, efficient GPU/CPU parallelization on inexpensive platforms, numerous techniques to reduce simulation but preserve accuracy. Monostatic RCS simulation of fighter aircrafts is...
Analysis of the accuracy of EM simulations of antenna arrays and arrays in vicinity of complex structures, where array elements are modeled by using far field sources, is presented in this paper. Antenna arrays with strong mutual coupling between the elements are the main problem under consideration. It is shown that if the antenna elements are minimum scattering antennas fed by current generators,...
We outline an approach for full 3-D electromagnetic analysis of stochastically generated trees. It starts from the stochastic model of trees assembled of cylinders with circular cross-section of different radii followed by processing that model in CAD tool, specifically tailored and coded for all-quad meshing. The final closed-surface dielectric model is simulated using a desktop computer equipped...
A simple methodology for the estimation of mutual coupling in antenna arrays which consist of minimum scattering antennas is presented in this paper. The method is based on full 3-D analysis of an element of analyzed array and post-processing of obtained results for input impedance, radiation pattern and electromagnetic field on position of other antennas of the array. Validation is performed by comparing...
We present one application of using of surface equivalence theorem for calculation the electromagnetic shielding efficiency. The problem we concerned is conductive spherical shell illuminated by an incident plane wave. The model is simulated by using MoM SIE based code, where theorem of surface equivalence is used in order to minimize propagation of numerical error through walls of the cavity. Simulation...
EM simulation of complex CAD models, described by a quadrilateral mesh, using higher order method of moments offers significant benefits in terms of computational efficiency. In order to exploit these benefits, a robust algorithm for automatic generation of a well-structured quadrilateral mesh is needed. The paper gives new variants of algorithm for quadrilateral meshing, which starts from triangular...
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