scholarly journals On the diffraction of a plane wave by an infinite plane grating

1954 ◽  
Vol 2 ◽  
pp. 103 ◽  
Author(s):  
Albert E. Heins ◽  
George L. Baldwin
Keyword(s):  
1968 ◽  
Vol 46 (12) ◽  
pp. 1473-1489 ◽  
Author(s):  
S. R. Seshadri

The admittance of an annular slot situated on a perfectly conducting, infinite plane screen covered with an unbounded, uniform magnetoplasma is investigated for the case when an external static magnetic field is perpendicular to the plane of the screen. The slot is assumed to be driven by a coaxial line which in turn is excited in its dominant TEM mode, and the field in the slot is approximated by that incident on it. A generalized plane wave representation for the fields is developed using Bessel transforms, and integral expressions are derived for the admittance of the slot. Extensive numerical results and a detailed discussion of the dependence of the admittance on the strength of the static magnetic field, the complete range of operating frequencies, and the radius and the width of the slot are also included.


1992 ◽  
Vol 70 (8) ◽  
pp. 615-622 ◽  
Author(s):  
I. R. Ciric ◽  
M. F. R. Cooray

An analytic solution is presented for the problem of scattering of a plane wave by a hemispheroidal boss on a perfectly conducting plane. The solution is based on an image technique, by which the original problem is reduced to that of the scattering of two plane waves by a full spheroid, in the absence of the infinite plane. One of these waves is just the given incident plane wave and the other one is chosen such that the boundary conditions in the original problem are satisfied. The field scattered by the hemispheroidal boss on the infinite plane is obtained by the superposition of the fields scattered by the full spheroid in an unbounded space, due to each of the two plane waves. The theory is given for the scattering of both scalar and vector waves. Numerical results are presented for the normalized-scattering cross section in the electromagnetic case for various conducting and dielectric hemispheroidal bosses, of different sizes and axial ratios. From a practical point of view, the solution is significant for the wave scattering by metallic surfaces with various protuberances and by a variety of structures, towers, antennas, and artificial and natural formations on the ground plane.


Author(s):  
Snider W Clint ◽  
Uman Martin A ◽  
Moore Robert C

Mott’s investigation of the scattering of an infinite plane wave by a bare nucleus involves rather delicate considerations of the behaviour of a power series near its circle of convergence, and it therefore appears desirable to obtain his result by a more direct and simple method. Such a method is given in this paper. The scattering power of a nucleus may be defined as the volume density of electricity in the scattered wave when the volume density of the incident wave is unity around the nucleus.


1996 ◽  
Vol 74 (3-4) ◽  
pp. 108-113 ◽  
Author(s):  
A.-K. Hamid

An analytic solution to the problem of scattering of a plane electromagnetic wave by a system of hemispherical bosses on a perfectly conducting ground plane is obtained using the solution of scattering by a system of full spheres and the method of images. The system considered is replaced by a system of complete spheres in the absence of the ground plane, but with the given incident plane wave and also a supplement, image plane wave, chosen such that the boundary conditions for the total field are satisfied at all points where the ground plane is located in the original problem. Numerical results for a different system of simulations are presented for the normalized backscattering cross section versus the angle of incidence.


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