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Showing 1 to 9 of 9 for “"magnetic-field integral equation"”.
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Understanding and Improving Moment Method Scattering Solutions
… accuracy of moment method solutions to electromagnetic scattering problems has been studied by many researchers. Error bounds for the moment method have been obtained in terms of Sobolev norms of the current solution. Motivated by the historical origins of Sobolev spaces as energy spaces, it is …
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Electromagnetic simulations in frequency and time domain using adaptive integral method
… to improve the performance of the adaptive integral method (AIM) for effective large scale simulations in both the frequency and the time domain. This is achieved by reducing the storage requirements, decreasing the amount of computational loads and implementing effective parallelization …
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Studies of some issues in solving surface integral equations and the equivalence principle algorithm
… We begin with the formulation for the electric field integral equation (EFIE), and visit the necessary treatment of the magnetic field integral equation (MFIE), the combined field integral equation (CFIE), and the Poggio-Miller-Chu-Harrington- Wu-Tsai (PMCHWT) along with various singularity …
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Wave Scattering from Structures that Display Areas of Small Radii of Curvature in the Presence of an Extended Planar Surface
… Surface features smaller than an electromagnetic wavelength are known to create diffracted fields over a wide range of scattering angles. In this thesis, the significance of such effects at low grazing angles with the presence of an extended planar surface is considered. The magnetic …
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Computationally Modeling the Effects of Surface Roughness on Soft X-Ray Multilayer Reflectors
Electromagnetic scattering from a rough two dimensional homogeneous scatterer has been computationally modeled. The scatterer is intended to simulate reflection from a two interface multilayer. The rough scatterer was created from Gaussian random points centered about an ideal interface. The points …
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A new method to calculate wave scattering from rough surfaces at low grazing angles
… method has been developed to study the electromagnetic fields scattered from one-dimensional perfect electric conducting arbitrarily rough surfaces which are planar in the mean. The technique allows for the calculation of the scattered fields in the low grazing angle regime, i.e., when the …
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Study of Electromagnetic Scattering from Randomly Rough Ocean-Like Surfaces Using Integral-Equation-Based Numerical Technique
A numerical study of electromagnetic scattering by one-dimensional perfectly conducting randomly rough surfaces with an ocean-like Pierson-Moskowitz spectrum is presented. Simulations are based on solving the Magnetic Field Integral Equation (MFIE) using the numerical technique called the Method of …
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Rough Surface Scattering and Propagation over Rough Terrain in Ducting Environments
… of modeling this problem is the parabolic wave equation (PWE) method. In this method, the Helmholtz wave equation is replaced by a PWE under the assumption of predominant forward propagation and scattering. The resulting PWE subjected to the appropriate boundary condition(s) is then solved, …
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Accuracy improvement of the second-kind Fredholm integral equations in computational electromagnetics
In computational electromagnetics, the second-kind Fredholm integral equations (IEs) are known to have very fast iterative convergence but rather poor solution accuracy compared with the first-kind Fredholm integral equations. The loss of the numerical accuracy is mainly due to the discretization …