A variational principle of the electromagnetic wave diffraction problem and its applications

1997 ◽  
Vol 324 (6) ◽  
pp. 365-372
Author(s):  
Sergei Kanaun
Keyword(s):  
Electromagnetic Wave ◽  
Variational Principle ◽  
Wave Diffraction ◽  
Diffraction Problem ◽  
Electromagnetic Wave Diffraction

Electromagnetic wave diffraction using a finite volume method

1997 ◽  
Vol 33 (1) ◽  
pp. 31 ◽  
Author(s):  
P. Bonnet ◽  
X. Ferrieres ◽  
F. Paladian ◽  
J. Grando ◽  
J.C. Alliot ◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Wave Diffraction ◽  
Electromagnetic Wave Diffraction ◽  
Volume Method

Diffractional Nonreciprocity at Electromagnetic Wave Diffraction on a Slit

2018 ◽  
Vol 53 (1) ◽  
pp. 36-40 ◽  
Author(s):  
A. A. Lalayan ◽  
O. S. Yeritsyan ◽  
O. M. Arakelyan ◽  
Sh. K. Yeritsyan
Keyword(s):  
Electromagnetic Wave ◽  
Wave Diffraction ◽  
Electromagnetic Wave Diffraction

scholarly journals OPERATOR METHOD IN THE PROBLEM OF A PLANE ELECTROMAGNETIC WAVE DIFFRACTION BY AN ANNULAR SLOT IN THE PLANE OR BY A RING

2021 ◽  
Vol 26 (4) ◽  
pp. 350-357
Author(s):  
M. E. Kaliberda ◽  
◽  
L. M. Lytvynenko ◽  
S. A. Pogarsky ◽  
◽  
...  
Keyword(s):  
Electromagnetic Wave ◽  
Circular Hole ◽  
Wave Diffraction ◽  
Scattered Field ◽  
Plane Electromagnetic Wave ◽  
Operator Method ◽  
Fredholm Integral Equations ◽  
Fourier Amplitude ◽  
Annular Slot ◽  
Electromagnetic Wave Diffraction

Purpose: The problem of a plane electromagnetic wave diffraction by an annular slot in the perfectly conducting zero thickness plane is considered. As a dual problem, the problem of diffraction by a perfectly conducting zero thickness ring is also considered. The paper aims at developing the operator method for the axially symmetric structures placed in free space. Design/methodology/approach: The problem is considered in the spectral domain. The scattered field is expressed in terms of unknown Fourier amplitudes (spectral functions). The annular slot is given as a unity of two simple discontinuities, namely of a disk and a circular hole in the plane, which interact with each other. The Fourier amplitude of the scattered field is sought as a sum of two amplitudes, the Fourier amplitude of the field of currents on the disk and Fourier amplitude of the field of currents on the perfectly conducting plane with circular hole. The operator equations are written for these amplitudes, which take into account the electromagnetic coupling of the disk and the hole in the plane. The equations use the reflection operators of a single isolated disk and a single hole in the plane. They are supposed to be known and can be obtained for example by the method of moments.The reflection operators can have singularities. After transformations, the equations are obtained, which are equivalent to the Fredholm integral equations of second kind and they can be solved numerically. Findings: The operator equations relative to the Fourier amplitudes of the field scattered by the discussed structure are obtained. The far zone scattered field for an annular slot and a ring for different values of parameters are studied. Conclusions: The rigorous solution of the problem of the electromagnetic wave diffraction by an annular slot in the plane and by a circular ring is obtained. The problem is reduced to the Fredholm integral equations of second kind. The far field distribution for different parameters is studied. The developed approach is an effective instrument for a number of problems of antenna technique to be solved. Key words: circular hole; disk; annular slot; ring; operator method; diffraction

Sign in / Sign up

Export Citation Format

Share Document