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In low-frequency, or dense-mesh problems, the electric field integral equation (EFIE) discretization requires the extraction of the solenoidal part of the current to avoid severe bad conditioning of the method of moments (MoM) matrix. The common approach to do this is using the loop basis functions for the solenoidal part. Here we show that the conventional loop basis has poor performances when applied...
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...
This paper illustrates the application into the MoM technique of a clever formulation to evaluate the array Green's function (AGF) of large finite planar phased array. The procedure is based on the AGF representation in terms of a double spectral integral, whose integration paths are properly deformed to have an exponential attenuation of the integrand. The diffraction integral is evaluated numerically...
In this work we present a new Multi-Resolution (MR) basis for the analysis of a generic 3D conductor via the EFIE-MoM. The (possibly curved) conductor is discretized with (planar) triangular cells, and the MR basis is constructed as a linear combination of the Rao-Wilton-Glisson (RWG) functions defined on the mesh.
For the MoM analysis of complex printed periodic structures, the use of sub-domain basis functions is essential. In this work, triangular mesh and Rao-Wilton-Glisson (RWG) functions are assumed. The aim of this work is to propose a hybridization of the standard spectral- and spatial-domain MoM approaches, through a convenient manipulation of the periodic Green's function (PGF)
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