Geometrical Theory of Diffraction for Electromagnetic Waves

Geometrical Theory of Diffraction for Electromagnetic Waves PDF Author: Graeme L. James
Publisher: IET
ISBN: 9780863410628
Category : Science
Languages : en
Pages : 312

Get Book Here

Book Description
The purpose of the book, apart from expounding the Geometrical Theory of Diffraction (GTD) method, is to present useful formulations that can be readily applied to solve practical engineering problems.

Geometrical Theory of Diffraction for Electromagnetic Waves

Geometrical Theory of Diffraction for Electromagnetic Waves PDF Author: Graeme L. James
Publisher: IET
ISBN: 9780863410628
Category : Science
Languages : en
Pages : 312

Get Book Here

Book Description
The purpose of the book, apart from expounding the Geometrical Theory of Diffraction (GTD) method, is to present useful formulations that can be readily applied to solve practical engineering problems.

Geometrical Theory of Diffraction

Geometrical Theory of Diffraction PDF Author: Vladimir Andreevich Borovikov
Publisher: IET
ISBN: 9780852968307
Category : Mathematics
Languages : en
Pages : 408

Get Book Here

Book Description
This book details the ideas underlying geometrical theory of diffraction (GTD) along with its relationships with other EM theories.

Theoretical Methods for Determining the Interaction of Electromagnetic Waves with Structures

Theoretical Methods for Determining the Interaction of Electromagnetic Waves with Structures PDF Author: J.K. Skwirzynski
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 936

Get Book Here

Book Description
This volume contains almost complete proceedings of the NATO Advanced Study Institute (ASI) organised in 1979 to bring together principal innovators and numerous users of mathematical techniques for analysing the interaction of electromagnetic waves with engineering and biological structures. The mathematical disciplines which can be brought to bear on these problems necessitate examination of effectiveness, convergence and robustness of the derived analytic and num~rical algorithms. The aim of this ASI was to give a clear and up-to-date tutorial presentation of available techniques, and to bring together interested scientists, engineers and mathematiciaris, to discuss together their experience and to ensure wider familiarity with the subject. Our programme consists of three distinct yet related parts. The first two of these reflect two somewhat different methods applicable for different ranges of L/A, where L represents a characteristic dimension of a structure and A is a representative wavelength-of radiation. The third part deals with the specific problem of biological interaction. In the first part (Low and Intermediate Frequency Applications) we offer tutorial texts and user-oriented discussions on main techniques and problems concerning: radiation, scattering, aperture penetration, inverse scattering, using moment methods and their developments. The approach to the high frequency applications forms the subject of the second part of this volume, concentrating mainly on the geometrical theory of diffraction (GTD). There are three main variants of the GTD: uniform theory of diffraction (UTD), uniform asymptotic theory (liAT) , spectral theory of diffraction (STD).

Application of the Geometrical Theory of Diffraction to Terrestrial LF Radio Wave Propagation

Application of the Geometrical Theory of Diffraction to Terrestrial LF Radio Wave Propagation PDF Author: R.M. Jones
Publisher: Springer-Verlag
ISBN: 3662346796
Category : Technology & Engineering
Languages : de
Pages : 32

Get Book Here

Book Description


Analytical Techniques Used to Calculate the Fields Due to Refraction and Diffraction of Electromagnetic Waves

Analytical Techniques Used to Calculate the Fields Due to Refraction and Diffraction of Electromagnetic Waves PDF Author: J. L. Gribble
Publisher:
ISBN:
Category :
Languages : en
Pages : 97

Get Book Here

Book Description
This thesis provides a compendium of analytical techniques which can be used to calculate the fields that are created when an electromagnetic wave is incident upon a physical object. Quasi-optical techniques (Geometrical Theory of Diffraction and Uniform Theory of Diffraction) are analyzed along with the more classical physical and geometrical optics techniques (Kirchoff Diffraction Theorem, Sommerfeld Diffraction Theorem, Fourier optics, and geometrical optics). The approximations that are used in each technique along with the regions of the electromagnetic spectrum where each technique can be applied are emphasized. Each technique is derived and all are shown to be ultimately dependent upon the validity of Maxwell's equations. The Fourier optics and Geometric Theory of Diffraction techniques are shown to be direct mathematical extensions of the Sommerfeld Diffraction Theorem. Each technique is then applied to a simple example problem. The technique of Fourier optics is shown to be very powerful while remaining mathematically simple. The Fresnel and Fraunhoffer approximations are most readily understood when this technique is used. It is also shown that the Geometric Theory of Diffraction and Uniform Theory of Diffraction are capable of giving accurate results when the physical object has a complex geometry. Keywords include: Diffraction; Millimeter waves; and Microwave optics.

Fundamentals of the Physical Theory of Diffraction

Fundamentals of the Physical Theory of Diffraction PDF Author: Pyotr Ya. Ufimtsev
Publisher: John Wiley & Sons
ISBN: 0470109009
Category : Science
Languages : en
Pages : 349

Get Book Here

Book Description
This book is the first complete and comprehensive description of the modern Physical Theory of Diffraction (PTD) based on the concept of elementary edge waves (EEWs). The theory is demonstrated with the example of the diffraction of acoustic and electromagnetic waves at perfectly reflecting objects. The derived analytic expressions clearly explain the physical structure of the scattered field and describe in detail all of the reflected and diffracted rays and beams, as well as the fields in the vicinity of caustics and foci. Shadow radiation, a new fundamental component of the field, is introduced and proven to contain half of the total scattered power.

Principles of Optics

Principles of Optics PDF Author: Max Born
Publisher: Elsevier
ISBN: 148310320X
Category : Science
Languages : en
Pages : 871

Get Book Here

Book Description
Principles of Optics: Electromagnetic Theory of Propagation, Interference and Diffraction of Light, Sixth Edition covers optical phenomenon that can be treated with Maxwell’s phenomenological theory. The book is comprised of 14 chapters that discuss various topics about optics, such as geometrical theories, image forming instruments, and optics of metals and crystals. The text covers the elements of the theories of interference, interferometers, and diffraction. The book tackles several behaviors of light, including its diffraction when exposed to ultrasonic waves. The selection will be most useful to researchers whose work involves understanding the behavior of light.

Electromagnetic Radiation, Scattering, and Diffraction

Electromagnetic Radiation, Scattering, and Diffraction PDF Author: Prabhakar H. Pathak
Publisher: John Wiley & Sons
ISBN: 1119810531
Category : Science
Languages : en
Pages : 1156

Get Book Here

Book Description
Electromagnetic Radiation, Scattering, and Diffraction Discover a graduate-level text for students specializing in electromagnetic wave radiation, scattering, and diffraction for engineering applications In Electromagnetic Radiation, Scattering and Diffraction, distinguished authors Drs. Prabhakar H. Pathak and Robert J. Burkholder deliver a thorough exploration of the behavior of electromagnetic fields in radiation, scattering, and guided wave environments. The book tackles its subject from first principles and includes coverage of low and high frequencies. It stresses physical interpretations of the electromagnetic wave phenomena along with their underlying mathematics. The authors emphasize fundamental principles and provide numerous examples to illustrate the concepts contained within. Students with a limited undergraduate electromagnetic background will rapidly and systematically advance their understanding of electromagnetic wave theory until they can complete useful and important graduate-level work on electromagnetic wave problems. Electromagnetic Radiation, Scattering and Diffraction also serves as a practical companion for students trying to simulate problems with commercial EM software and trying to better interpret their results. Readers will also benefit from the breadth and depth of topics, such as: Basic equations governing all electromagnetic (EM) phenomena at macroscopic scales are presented systematically. Stationary and relativistic moving boundary conditions are developed. Waves in planar multilayered isotropic and anisotropic media are analyzed. EM theorems are introduced and applied to a variety of useful antenna problems. Modal techniques are presented for analyzing guided wave and periodic structures. Potential theory and Green's function methods are developed to treat interior and exterior EM problems. Asymptotic High Frequency methods are developed for evaluating radiation Integrals to extract ray fields. Edge and surface diffracted ray fields, as well as surface, leaky and lateral wave fields are obtained. A collective ray analysis for finite conformal antenna phased arrays is developed. EM beams are introduced and provide useful basis functions. Integral equations and their numerical solutions via the method of moments are developed. The fast multipole method is presented. Low frequency breakdown is studied. Characteristic modes are discussed. Perfect for graduate students studying electromagnetic theory, Electromagnetic Radiation, Scattering, and Diffraction is an invaluable resource for professional electromagnetic engineers and researchers working in this area.

Electromagnetic Diffraction Modeling and Simulation with MATLAB

Electromagnetic Diffraction Modeling and Simulation with MATLAB PDF Author: Gökhan Apaydin
Publisher: Artech House
ISBN: 1630817805
Category : Science
Languages : en
Pages : 364

Get Book Here

Book Description
This exciting new resource presents a comprehensive introduction to the fundamentals of diffraction of two-dimensional canonical structures, including wedge, strip, and triangular cylinder with different boundary conditions. Maxwell equations are discussed, along with wave equation and scattered, diffracted and fringe fields. Geometric optics, as well as the geometric theory of diffraction are explained. With MATLAB scripts included for several well-known electromagnetic diffraction problems, this book discusses diffraction fundamentals of two-dimensional structures with different boundary conditions and analytical numerical methods that are used to show diffraction. The book introduces fundamental concepts of electromagnetic problems, identities, and definitions for diffraction modeling. Basic coordinate systems, boundary conditions, wave equation, and Green’s function problem are given. The scattered fields, diffracted fields, and fringe fields, radar cross section for diffraction modeling are presented. Behaviors of electromagnetic waves around the two-dimensional canonical wedge and canonical strip are also explored. Diffraction of trilateral cylinders and wedges with rounded edges is investigated as well as double tip diffraction using Finite Difference Time Domain and Method of Moments. A MATLAB based virtual tool, developed with graphical user interface (GUI), for the visualization of both fringe currents and fringe waves is included, using numerical FDTD and MoM algorithm and High-Frequency Asymptotics approaches.

Theory of Edge Diffraction in Electromagnetics

Theory of Edge Diffraction in Electromagnetics PDF Author: Pyotr Yakovlevich Ufimtsev
Publisher: IET
ISBN: 1891121669
Category : Science
Languages : en
Pages : 452

Get Book Here

Book Description
"This book includes in revised form materials from certain articles by the author and Chapters 1, 4, 6, and 7 of his book on PTD [Metod kraevykh voln v fizicheskoi? teorii difrakt?s?ii]"--Page xv. Revision of title published: Encino, Calif. : Tech Science Press, 2003, in series: Contemporary research on emerging sciences and technology. Supplements Fundamental of the physical theory of diffraction (Wiley, 2007)--P. 4 of cover.