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The Method of Moments in Electromagnetics
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In this article, the Fast Multipole Method (FMM) was used to solve the problem of two-dimensional problems with three-dimensional surfaces, and the Matrix-Vector Product Addition Theorem (MVPIT) was applied to solve it.Abstract:
PREFACE Computational Electromagnetics Computational Electromagnetics Algorithms A Brief Review of Electromagnetics Maxwell's Equations Electromagnetic Boundary Conditions Formulations for Radiation Vector Potentials Near and Far Fields Equivalent Problems Surface Integral Equations The Method of Moments Electrostatic Problems The Method of Moments Common Two-Dimensional Basis Functions Solution of Matrix Equations Thin Wires Thin Wire Approximation Thin Wire Excitations Solving Hallen's Equation Solving Pocklington's Equation Thin Wires of Arbitrary Shape Examples two-dimensional Problems Two-Dimensional EFIE Two-Dimensional MFIE Examples Bodies of Revolution BOR Surface Descriptions Surface Current Expansion on a BOR EFIE for a Conducting BOR MFIE for a Conducting BOR Notes on Software Implementation Examples three-dimensional Problems Representation of Three-Dimensional Surfaces Surface Currents on a Triangle EFIE for Three-Dimensional Conducting Surfaces MFIE for Three-Dimensional Conducting Surfaces Notes on Software Implementation Considerations for Modeling with Triangles Examples The Fast Multipole Method The Matrix-Vector Product Addition Theorem FMM Matrix Elements One-Level Fast Multipole Algorithm Multilevel Fast Multipole Algorithm Notes on Software Implementation Preconditioning Examples Integration One-Dimensional Integration Integration over Triangles INDEX References appear at the end of each chapter.read more
Citations
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Aerosol light absorption and its measurement: A review
TL;DR: In this paper, the authors used Mie theory for spherical particles and with more complicated numerical methods for other particle shapes to calculate aerosol light absorption in the atmosphere, which contributes to solar radiative forcing through absorption of solar radiation and heating of the absorbing aerosol layer.
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Discontinuous electromagnetic fields using orthogonal electric and magnetic currents for wavefront manipulation
TL;DR: In this paper, the authors introduce the idea of discontinuous electric and magnetic fields at a boundary to design and shape wavefronts in an arbitrary manner, and show how to arbitrarily refract a beam using a set of impedance and admittance surfaces.
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A nonlocal operator method for partial differential equations with application to electromagnetic waveguide problem
TL;DR: In this paper, a nonlocal operator theory based on the variational principle is proposed for the solution of partial differential equations, which allows assembling of the tangent stiffness matrix with ease and simplicity, which is necessary for the eigenvalue analysis such as the waveguide problem.
Journal ArticleDOI
A Survey of Radio Propagation Modeling for Tunnels
TL;DR: The main modeling approaches used for propagation in tunnels are reviewed, namely, numerical methods for solving Maxwell equations, waveguide or modal approach, ray tracing based methods and two-slope path loss modeling.
Journal ArticleDOI
Modeling of Grounding Electrodes Under Lightning Currents
TL;DR: In this paper, a model and a simple formula that combine the electromagnetic approach, suitable for high-frequency analysis, with the method that accounts for the soil ionization effects, recommended by the International Council on Large Electric Systems (CIGRE) and the IEEE Working Groups, are used for the parametric analysis.
References
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Book
Antenna theory and design
TL;DR: The CEM for Antennas: Finite Difference Time Domain Method (FDTDM) as mentioned in this paper is a CEM-based method for measuring the time domain of an antenna.
Book
Fast and Efficient Algorithms in Computational Electromagnetics
TL;DR: The book introduces you to new advances in the perfectly matched layer absorbing boundary conditions, and offers a thorough understanding of error analysis of numerical methods, fast-forward and inverse solvers for inverse problems, hybridization in computational electromagnetics, and asymptotic waveform evaluation.
Journal ArticleDOI
Calculation of CFIE impedance matrix elements with RWG and n/spl times/RWG functions
Pasi Ylä-Oijala,Matti Taskinen +1 more
TL;DR: In this article, the singularity extraction method was used to evaluate the impedance matrix elements of the combined field integral equation (CFIE) with these basis and test functions, and all singularities were extracted and calculated in closed form and numerical integration was applied only for regular functions.