ANOMALOUS TRANSMISSION OF A GAUSSIAN WAVE BEAM THROUGH EXORBITANT RECTANGULAR HOLES IN A FLAT SCREEN OF FINITE THICKNESS SUPPORTING A TRAPPED-MODE

An anomalous transmission mode and a trapped-mode are considered for scattering of a three-dimensional Gaussian wave beam on a two-dimensional two-element periodic semi-transparent array of rectangular wave guides segments. Results for a case of normal incidence of linearly polarized beam of circula...

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Bibliographic Details
Published in:Radio physics and radio astronomy (Print) 2014-03, Vol.19 (1), p.48-56
Main Authors: Gribovsky, A. V., Yeliseyev, O. A.
Format: Article
Language:English
Subjects:
directional pattern
electrodynamic behavior
three-dimensional gaussian wave beam
two-dimensional periodic structures
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Summary:An anomalous transmission mode and a trapped-mode are considered for scattering of a three-dimensional Gaussian wave beam on a two-dimensional two-element periodic semi-transparent array of rectangular wave guides segments. Results for a case of normal incidence of linearly polarized beam of circular cross-section on an array with a rectangular mesh are presented. Power reflection coefficients dependence is investigated vs. wave length in a trapped-mode and for the case of anomalous transmission. Distinctions in behavior of dependences of reflection coefficients for a plane wave and wave beam with different linear sizes are shown and analyzed. Dependence of the reflected and passed beam shapes in a far zone is shown vs. wave length. The effect of narrowing of the directional pattern of a scattered field, as against that of an incident beam field, is explained.
ISSN:1027-9636
2415-7007
DOI:10.15407/rpra19.01.048