Author: John Frank Hunka
Publisher:
ISBN:
Category :
Languages : en
Pages : 240
Book Description
Electromagnetic Scattering by Two Bodies of Revolution
Electromagnetic Scattering from a Homogeneous Body of Revolution
Author: Joseph R. Mautz
Publisher:
ISBN:
Category : Electromagnetic theory
Languages : en
Pages : 84
Book Description
Publisher:
ISBN:
Category : Electromagnetic theory
Languages : en
Pages : 84
Book Description
Dual-surface Magnetic- and Electric-field Integral Equations for Bodies of Revolution in Electromagnetic Scattering
Author: James L. Schmitz
Publisher:
ISBN:
Category : Scattering (Physics)
Languages : en
Pages : 364
Book Description
Publisher:
ISBN:
Category : Scattering (Physics)
Languages : en
Pages : 364
Book Description
Measurement and Calculation of Electromagnetic Scattering by Buried Bodies of Revolution
Electromagnetic Scattering by Conducting by Bodies of Revolution-- Solution Using Sub-Domain and Entire-Domain Basis Functions
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 43
Book Description
In this work, the problem of electromagnetic scattering of a plane wave incident on a conducting body of revolution is considered. The body is assumed to be situated in infinite homogeneous space. The problem is solved using the method of moments. Use of two different types of expansion and testing functions, namely, sub-domain type and entire-domain type is considered. Results obtained using sub-domain pulse functions and entire-domain Gaussian functions are presented. The relative advantages and disadvantages of each type of basis functions is discussed. Keywords: Electromagnetic scattering, Method of moments, Bodies of revolution, Entire domain functions, Subdomain functions.
Publisher:
ISBN:
Category :
Languages : en
Pages : 43
Book Description
In this work, the problem of electromagnetic scattering of a plane wave incident on a conducting body of revolution is considered. The body is assumed to be situated in infinite homogeneous space. The problem is solved using the method of moments. Use of two different types of expansion and testing functions, namely, sub-domain type and entire-domain type is considered. Results obtained using sub-domain pulse functions and entire-domain Gaussian functions are presented. The relative advantages and disadvantages of each type of basis functions is discussed. Keywords: Electromagnetic scattering, Method of moments, Bodies of revolution, Entire domain functions, Subdomain functions.
Application of Integral Equation and Finite-difference Methods to Electromagnetic Scattering by Two-dimensional and Body of Revolution Geometries
Author: James Joseph Kattoor
Publisher:
ISBN:
Category :
Languages : en
Pages : 256
Book Description
The theoretical and numerical studies of electromagnetic scattering and radiation from perfectly conducting as well as dielectric bodies are of great importance in the design of various systems, such as airborne targets and antennas. This thesis is an attempt to investigate integral equation and partial differential equation techniques as tools for numerical solution of such problems. These techniques are analyzed and some improvements to existing methods are presented. Some scattering problems involving two-dimensional and body of revolution geometries are solved using these techniques to demonstrate their capabilities and to point out their limitations. The first topic that this thesis addresses is the method of moments technique. To demonstrate the techniques developed, electromagnetic scattering from perfectly conducting as well as dielectric bodies of revolution is considered. There are two major issues addressed in this thesis, in this context. First, the use of quasi-entire-domain basis functions, as an alternative to the more traditional sub-sectional basis functions, is considered. It is shown that using the quasi-entire-domain basis functions results in a reduction in the size of the matrix that needs to be solved. The second major topic that Chapter 2 considers is the problem of electromagnetic scattering from layered and partially coated bodies of revolution. The formulation used to solve these problems as well as some results, are presented. The partial differential equation technique that this thesis considers is the finite-difference method. Chapter 3 discusses the finite-difference method in the frequency domain, while Chapter 4 focuses on the solution of Maxwell's equations in the time domain. Chapter 3 solves the problem of scattering by a conducting body of revolution using the finite-difference method in the frequency domain. The procedure outlined uses the coupled azimuthal potentials introduced by Morgan, Chang, and Mei (20) to obtain two coupled partial differential equations. These equations are then solved over a domain discretized using a boundary-fitted curvilinear coordinate system. The main contribution of this thesis in this respect is the application of the boundary-fitted curvilinear coordinate system to this class of problems. It is demonstrated that using this system eliminates the need for using the staircase approximation that is typically required in the finite-difference methods. Chapter 4 focuses on circumventing the problem of staircase approximation that is traditionally used to model material boundaries in finite-difference time-domain algorithms. In this context, two methods are presented. The first one, referred to in this thesis as the modified stencil approach, allows the use of arbitrarily-shaped quadrilateral grids. The second is similar to the boundary-fitted curvilinear coordinate approach presented in Chapter 3. The methods are compared and contrasted, and the advantages and disadvantages of each method are pointed out.
Publisher:
ISBN:
Category :
Languages : en
Pages : 256
Book Description
The theoretical and numerical studies of electromagnetic scattering and radiation from perfectly conducting as well as dielectric bodies are of great importance in the design of various systems, such as airborne targets and antennas. This thesis is an attempt to investigate integral equation and partial differential equation techniques as tools for numerical solution of such problems. These techniques are analyzed and some improvements to existing methods are presented. Some scattering problems involving two-dimensional and body of revolution geometries are solved using these techniques to demonstrate their capabilities and to point out their limitations. The first topic that this thesis addresses is the method of moments technique. To demonstrate the techniques developed, electromagnetic scattering from perfectly conducting as well as dielectric bodies of revolution is considered. There are two major issues addressed in this thesis, in this context. First, the use of quasi-entire-domain basis functions, as an alternative to the more traditional sub-sectional basis functions, is considered. It is shown that using the quasi-entire-domain basis functions results in a reduction in the size of the matrix that needs to be solved. The second major topic that Chapter 2 considers is the problem of electromagnetic scattering from layered and partially coated bodies of revolution. The formulation used to solve these problems as well as some results, are presented. The partial differential equation technique that this thesis considers is the finite-difference method. Chapter 3 discusses the finite-difference method in the frequency domain, while Chapter 4 focuses on the solution of Maxwell's equations in the time domain. Chapter 3 solves the problem of scattering by a conducting body of revolution using the finite-difference method in the frequency domain. The procedure outlined uses the coupled azimuthal potentials introduced by Morgan, Chang, and Mei (20) to obtain two coupled partial differential equations. These equations are then solved over a domain discretized using a boundary-fitted curvilinear coordinate system. The main contribution of this thesis in this respect is the application of the boundary-fitted curvilinear coordinate system to this class of problems. It is demonstrated that using this system eliminates the need for using the staircase approximation that is typically required in the finite-difference methods. Chapter 4 focuses on circumventing the problem of staircase approximation that is traditionally used to model material boundaries in finite-difference time-domain algorithms. In this context, two methods are presented. The first one, referred to in this thesis as the modified stencil approach, allows the use of arbitrarily-shaped quadrilateral grids. The second is similar to the boundary-fitted curvilinear coordinate approach presented in Chapter 3. The methods are compared and contrasted, and the advantages and disadvantages of each method are pointed out.
Efficient Solution for Electromagnetic Scattering Using the Dual-surface Magnetic-field Integral Equation for Bodies of Revolution
Author: James L. Schmitz
Publisher:
ISBN:
Category : Electromagnetic waves
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category : Electromagnetic waves
Languages : en
Pages : 0
Book Description
Modern Electromagnetic Scattering Theory with Applications
Author: Andrey V. Osipov
Publisher: John Wiley & Sons
ISBN: 0470512385
Category : Technology & Engineering
Languages : en
Pages : 824
Book Description
This self-contained book gives fundamental knowledge about scattering and diffraction of electromagnetic waves and fills the gap between general electromagnetic theory courses and collections of engineering formulas. The book is a tutorial for advanced students learning the mathematics and physics of electromagnetic scattering and curious to know how engineering concepts and techniques relate to the foundations of electromagnetics
Publisher: John Wiley & Sons
ISBN: 0470512385
Category : Technology & Engineering
Languages : en
Pages : 824
Book Description
This self-contained book gives fundamental knowledge about scattering and diffraction of electromagnetic waves and fills the gap between general electromagnetic theory courses and collections of engineering formulas. The book is a tutorial for advanced students learning the mathematics and physics of electromagnetic scattering and curious to know how engineering concepts and techniques relate to the foundations of electromagnetics
On the Electromagnetic Wave Scatterings by Buried Bodies of Revolution with Arbitrary Orientation
Author: Po-Shin Cheng
Publisher:
ISBN:
Category : Electromagnetic scattering
Languages : en
Pages : 326
Book Description
Publisher:
ISBN:
Category : Electromagnetic scattering
Languages : en
Pages : 326
Book Description
Numerical Computation of Electromagnetic Scattering by Inhomogeneous Dielectric Bodies of Revolution
Author: Michael Allen Morgan
Publisher:
ISBN:
Category : Electromagnetic theory
Languages : en
Pages : 410
Book Description
Publisher:
ISBN:
Category : Electromagnetic theory
Languages : en
Pages : 410
Book Description