Author: G. A. Grinberg Publisher: ISBN: Category : Differential equations Languages : en Pages : 40
Book Description
While the question of electromagnetic wave propagation from an arbitrary system of radiators in a space of two or more homogeneous, isotropic media with plane-parallel separating surfaces can be considered completely solved, the analogous problem, corresponding to the case of two or a larger number of media with plane but not parallel, separating surfaces appears to be incomparably more complex. Up until the present, a rigorous solution has not been given successfully, even for the simplest problem of this type - the problem of the diffraction of electromagnetic waves by a wedge of material, possessing finite conductivity, in a vacuum or in a homogeneous medium.
Author: Graeme L. James Publisher: IET ISBN: 9780863410628 Category : Science Languages : en Pages : 312
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.
Author: Prabhakar Harihar Pathak Publisher: ISBN: Category : Electric waves Languages : en Pages : 174
Book Description
A ray-fixed coordinate system is introduced and used to derive a new, compact form of the dyadic diffraction coefficient for an electromagnetic wave incident on a perfectly-conducting wedge. This diffraction coefficient is merely the sum of two dyads; furthermore, with the use of simple correction factors which have the same form for plane, cylindrical, conical or spherical waves incident on the edge, the dyadic diffraction coefficient is valid in the transition regions of the shadow and reflection boundaries. (Author).
Author: Sam Karp Publisher: ISBN: 9781332120789 Category : Science Languages : en Pages : 32
Book Description
Excerpt from Diffraction by a Tipped Wedge: With Applications to Blunt Edges Diffraction By a Tipped Wedge: With Applications to Blunt Edges was written by Sam Karp. This is a 32 page book, containing 4745 words and 8 pictures. Search Inside is enabled for this title. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Pyotr Ya. Ufimtsev Publisher: John Wiley & Sons ISBN: 0470109009 Category : Science Languages : en Pages : 349
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.
Author: Y. M. Hwang Publisher: ISBN: Category : Antennas (Electronics) Languages : en Pages : 102
Book Description
The diffraction of an electromagnetic wave by a perfectly-conducting right-angled wedge with one surface covered by a dielectric slab or absorber is considered. The effect of the coated surface is approximated by a uniform surface impedance. The solution of the normally incident electromagnetic problem is facilitated by introducing two scalar fields which satisfy a mixed boundary condition on one surface of the wedge and a Neumann of Dirichlet boundary condition on the other. A functional transformation is employed to simplify the boundary conditions so that eigenfunction expansions can be obtained for the resulting Green's functions. The eigenfunction expansions are transformed into the integral representations which then are evaluated asymptotically by the modified Pauli-Clemmow method of steepest descent. A far zone approximation is made to obtain the scattered field from which the diffraction coefficient is found for scalar plane, cylindrical or sperical wave incident on the edge. With the introduction of a ray-fixed coordinate system, the dyadic diffraction coefficient for plane or cylindrical EM waves normally indicent on the edge is reduced to the sum of two dyads which can be written alternatively as a 2 X 2 diagonal matrix.
Author: G. A. Grinberg
Author: Graeme L. James
Author: Bernard Earl Kalensher
Author: Prabhakar Harihar Pathak
Author: Sam Karp
Author: Vladimir Andreevich Borovikov
Author: Pyotr Ya. Ufimtsev
Author: Y. M. Hwang
Author: Ming-Cheng Liang
Author: Robert Arthur Yates