ELECTROMAGNETIC DIFFRACTION BY HOMOGENEOUS CYLINDERS OF THE FIELD RADIATED BY A DIPOLE - A RIGOROUS COMPUTATION

Citation
E. Ngakosso et al., ELECTROMAGNETIC DIFFRACTION BY HOMOGENEOUS CYLINDERS OF THE FIELD RADIATED BY A DIPOLE - A RIGOROUS COMPUTATION, Journal of electromagnetic waves and applications, 9(9), 1995, pp. 1189-1206
Citations number
NO
Categorie Soggetti
Physycs, Mathematical","Physics, Applied","Engineering, Eletrical & Electronic
ISSN journal
09205071
Volume
9
Issue
9
Year of publication
1995
Pages
1189 - 1206
Database
ISI
SICI code
0920-5071(1995)9:9<1189:EDBHCO>2.0.ZU;2-N
Abstract
Expanding the field radiated by a dipole as a superposition of cylindr ical waves (Fourier transform with respect to the spatial coordinate d escribing the direction of the cylinder axis) permits us to solve the diffraction problem with the help of a rigorous integral method specia lized for the diffraction of an obliquely incident wave by a homogeneo us rod. A linear system is solved for each Fourier component, and the solution is obtained from the superposition of the elementary diffract ed fields. In the complex plane of spatial frequencies, a discrete set of singular values lies along the real axis or close to it, describin g the irregular frequencies, the branch points or the guided modes. In order to perform an accurate integration, special attention is given to the behavior of the transfer function in the neighborhood of such c ritical points.