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A novel simple to implement technique to accelerate the method of moments applied to surface integral equations of computational electromagnetics is presented. The method is based on the non-uniform grid algorithm and its precision is enhanced by efficient quadrature rules for the accurate computation of near-field based on the cancellation techniques. The method is an attractive alternative to the...
Complex scattering targets contain metallic structures with junctions and sharp edges that require a special procedure to be analyzed by the Method of Moments. Singular basis functions to mdel junctions with edge profile connected together are considered. At the Conference, we will show how to handle the different geometrical cases together with numerical results that validate the proposed method.
This paper presents the properties and the rules to define subsectional singular divergence-conforming vector bases that incorporate the edge conditions for wedge structures. The use of singular high-order bases in Method of Moment codes provides highly accurate and efficient numerical results for the current and charge density induced on 3D sharp-wedge structures.
The paper summarizes the research results obtained on numerical modeling of the diffraction effects due to abrupt material or geometrical discontinuities of electromagnetic structures. High order polynomial vector bases are often used to numerically model EM problems, but polynomial approximations spoil the convergence properties of the used finite method whenever the physical quantities have singular...
We present new subsectional, singular divergence-conforming vector bases that incorporate the edge conditions for conducting wedges. The bases are of additive kind because obtained by incrementing the regular polynomial vector bases with other subsectional basis sets that model the singular behavior of the unknown vector field in the wedge neighborhood. Singular bases of this kind, complete to arbitrarily...
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