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A method to efficiently apply Domain-Decomposition (DD) to the MoM via the Synthetic Function eXpansion (SFX) is presented. Special emphasis is placed on the automatic generation of block subdivision of an arbitrary structure, which is key for all DD approaches. The DD-SFX approach is integrated within an FFT-based fast solver. Numerical experiments are presented in order to validate the method.
This paper introduces a new type of entire-domain basis functions for the analysis of the scattering from 3D polyhedral bodies. A non-redundant set of basis functions is determined a priori by explicit approximate formulas either for currents or radiated field representation. Numerical results are presented to shown the accuracy of the method.
The basic idea of this work is to eliminate the Green's function singularity, without affecting the stability and the accuracy of the integrals, through a proper windowing of the employed Green's function spectrum.
The Green's function of the background medium is the kernel of the integral equation (IE), and it diverges when observation and source points coincide; this is the origin of difficulties in accurately computing the entries of the Method of Moments (MoM) matrix. The basic idea of this work is to eliminate the Green's function singularity, without affecting the stability and the accuracy of the integrals,...
In this work a new multi-resolution (MR) basis is presented for the analysis of PEC structures large in terms of wavelength lambda, via the method of moments (MoM) applied to the Electric Field Integral Equation (EFIE). The conductor is discretized with triangular cells and the proposed basis is a linear combination of the standard Rao-Wilton-Glisson (RWG) functions defined on the mesh.
In the electric field integral equation (EFIE) solved by the method of moments (MoM), it is well known that to avoid the ldquolow frequency breakdownrdquo the unknown current must be separated into a solenoidal part and a non-solenoidal remainder. In our previous works, we have posed more attention in generating an efficient Multi-Resolution (MR) basis for the non-solenoidal part of the current, keeping...
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