Author: Omar Mohamad Al-BundakPublisher:
ISBN:
Category : Dielectrics
Languages : en
Pages : 192
Book Description
Electromagnetic Scattering of Arbitrarily Shaped Inhomogeneous Cylinders Whose Cross-sections are Modeled by Triangular Patches
Author: Omar Mohamad Al-BundakPublisher:
ISBN:
Category : Dielectrics
Languages : en
Pages : 192
Book Description
Electromagnetic Scattering and Radiation of Arbitrarily-shaped Surfaces by Triangular Patch Modeling
Author: Sadasiva Madiraju RaoPublisher:
ISBN:
Category : Electromagnetic theory
Languages : en
Pages : 356
Book Description
Electromagnetic Scattering Analysis of Arbitrarily Shaped Material Cylinder by FEM-BEM Method
Author: M. D. DeshpandePublisher:
ISBN:
Category : Boundary element methods
Languages : en
Pages : 38
Book Description
A hybrid method that combines the finite element method (FEM) and the boundary element method (BEM) is developed to analyze electromagnetic scattering from arbitrarily shaped material cylinders. By this method, the material cylinder is first enclosed by a fictitious boundary. Maxwell's equations are then solved by FEM inside and by BEM outside the boundary. Electromagnetic scattering from several arbitrarily shaped material cylinders is computed and compared with results obtained by other numerical techniques.
Proceedings
Author: Publisher:
ISBN:
Category : Electromagnetic fields
Languages : en
Pages : 194
Book Description
Electromagnetic Scattering and Radiation of Arbitrarily-shaped Surfaces by Triangular Patch Modeling
Author: Sadasiva M. RaoThe Electromagnetic Scattering from Arbitrarily Shaped Bodies at Very Low Frequency Range Using Triangular Patch Modeling
Author: Joongsoo LimPublisher:
ISBN:
Category : Electromagnetic waves
Languages : en
Pages : 182
Book Description
Electromagnetic Scattering by Surface of Arbitrary Shape
Author: Donald R. WiltonPublisher:
ISBN:
Category :
Languages : en
Pages : 68
Book Description
The electric field integral equation (EFIE) is used with the moment to develop a simple and efficient numerical procedure for treating problems of scattering by arbitrarily-shaped objects. The objects are modeled for numerical purposes by planar triangular surface patch models. Because the EFIE formulation is used, the procedure is applicable to both open and closed bodies. Crucial to the formulation is development of a set of special subdomain basis functions defined on pairs of adjacent triangular patches. The basis functions yield a current representation which is free of line or point charges at subdomain boundaries. A second approach using the magnetic field integral equation (MFIE) and employing the same basis functions is also developed. Although the MFIE applies only to closed bodies, the moment matrix of the MFIE is also needed in dielectric scattering problems and in the so-called combined field integral equation used to eliminate difficulties with internal resonances present in the MFIE and EFIE formulations. The EFIE approach is applied to the scattering problems of plane wave illumination of a flat square plate, a bent square plate, a circular disk, and a sphere. Comparisons of surface current densities are made with previous computations or exact formulations and good agreement is obtained in each case. The MFIE approach is also applied to the sphere and reasonable agreement with exact calculations is obtained.
Radar Cross Sections of Complex Objects
Author: W. Ross StonePublisher: Institute of Electrical & Electronics Engineers(IEEE)
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 554
Book Description
International Aerospace Abstracts
Author: The Method of Moments in Electromagnetics
Author: Walton C. GibsonPublisher: CRC Press
ISBN: 1000412482
Category : Mathematics
Languages : en
Pages : 510
Book Description
The Method of Moments in Electromagnetics, Third Edition details the numerical solution of electromagnetic integral equations via the Method of Moments (MoM). Previous editions focused on the solution of radiation and scattering problems involving conducting, dielectric, and composite objects. This new edition adds a significant amount of material on new, state-of-the art compressive techniques. Included are new chapters on the Adaptive Cross Approximation (ACA) and Multi-Level Adaptive Cross Approximation (MLACA), advanced algorithms that permit a direct solution of the MoM linear system via LU decomposition in compressed form. Significant attention is paid to parallel software implementation of these methods on traditional central processing units (CPUs) as well as new, high performance graphics processing units (GPUs). Existing material on the Fast Multipole Method (FMM) and Multi-Level Fast Multipole Algorithm (MLFMA) is also updated, blending in elements of the ACA algorithm to further reduce their memory demands. The Method of Moments in Electromagnetics is intended for students, researchers, and industry experts working in the area of computational electromagnetics (CEM) and the MoM. Providing a bridge between theory and software implementation, the book incorporates significant background material, while presenting practical, nuts-and-bolts implementation details. It first derives a generalized set of surface integral equations used to treat electromagnetic radiation and scattering problems, for objects comprising conducting and dielectric regions. Subsequent chapters apply these integral equations for progressively more difficult problems such as thin wires, bodies of revolution, and two- and three-dimensional bodies. Radiation and scattering problems of many different types are considered, with numerical results compared against analytical theory as well as measurements.