Electromagnetic scattering from a dielectric-coated elliptic cylinder

1988 ◽  
Vol 66 (12) ◽  
pp. 1115-1122 ◽  
Author(s):  
H. A. Ragheb ◽  
L. Shafai
Keyword(s):  
Plane Wave ◽  
Electromagnetic Scattering ◽  
Line Source ◽  
Elliptic Cylinder ◽  
Geometrical Parameters ◽  
Wave Excitation ◽  
Type Curves ◽  
Boundary Value Method ◽  
Design Type ◽  
Source Excitation

An exact treatment using the boundary-value method for solving the problem of scattering of a line-source field or a plane wave by a perfectly conducting elliptic cylinder coated with a confocal dielectric elliptical shell is presented. For the line-source excitation the total field is calculated, while for the plane-wave excitation the echo width is obtained. A sample and interesting results for the backscattering echo width versus different geometrical parameters are obtained and presented. A set of design-type curves, which are useful for locating the maximum or minimum backscattering echo width, are also provided.

scholarly journals Rigorous Solution to Plane Wave Scattering by an Arbitrary-Shaped Particle Embedded into a Cylindrical Cell of Similar Material

2009 ◽  
Vol 2009 ◽  
pp. 1-6 ◽  
Author(s):  
Constantine A. Valagiannopoulos
Keyword(s):  
Plane Wave ◽  
Electromagnetic Scattering ◽  
Hypergeometric Functions ◽  
Integral Formula ◽  
Scattering Problem ◽  
Double Series ◽  
Infinite Cylinder ◽  
Shaped Particle ◽  
Plane Wave Scattering ◽  
Good Agreement

An infinite cylinder of arbitrary shape is embedded into a circular one, and the whole structure is illuminated by a plane wave. The electromagnetic scattering problem is solved rigorously under the condition that the materials of the two cylinders possess similar characteristics. The solution is based on a linear Taylor expansion of the scattering integral formula which can be useful in a variety of different configurations. For the specific structure, its own far field response is given in the form of a double series incorporating hypergeometric functions. The results are in good agreement with those obtained via eigenfunction expansion. Several numerical examples concerning various shape patterns are examined and discussed.

scholarly journals Electromagnetic Scattering from Surfaces with Curved Wedges Using the Method of Auxiliary Sources (MAS)

2020 ◽  
Vol 10 (7) ◽  
pp. 2309 ◽  
Author(s):  
Vissarion G. Iatropoulos ◽  
Minodora-Tatiani Anastasiadou ◽  
Hristos T. Anastassiu
Keyword(s):  
Plane Wave ◽  
Electromagnetic Scattering ◽  
Wave Scattering ◽  
Transverse Magnetic ◽  
Numerical Results ◽  
Circular Arcs ◽  
Artificial Surface ◽  
Method Of Auxiliary Sources ◽  
Plane Wave Scattering ◽  
Auxiliary Source

The method of auxiliary sources (MAS) is utilized in the analysis of Transverse Magnetic (TM) plane wave scattering from infinite, conducting, or dielectric cylinders, including curved wedges. The latter are defined as intersections of circular arcs. The artificial surface, including the auxiliary sources, is shaped in various patterns to study the effect of its form on the MAS accuracy. In juxtaposition with the standard, conformal shape, several deformations are tested, where the auxiliary sources are forced to approach the tip of the wedge. It is shown that such a procedure significantly improves the accuracy of the numerical results. Comparisons of schemes are presented, and the optimal auxiliary source location is proposed.

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