Ostankov A. V. (Doctor of Technical Sciences, Professor of the Department of Radio Engineering of Voronezh State Technical University)
| |
Elaboration of the effective versions of microwave antennas diffraction radiation and radiation properties’ optimization of existing ones are relevant. They are largely based on mathematical modeling, anticipating the practical realization of the distribution-radiating system. In this article we obtain the mathematical apparatus within the electromagnetic wave diffraction theory on infinite periodic structures. The elaborated model describes the process of diffraction of a plane-polarized wave on a two-dimensional structure type of "dielectric – air gap – slit conductive grating – dielectric – reflective conductive grating (comb)." Computational algorithm is reduced to solution of a linear algebraic equation system for the complex amplitudes of the spatial (including surface) harmonics of the scattered field. The created model can be easily adapted to the analysis of particular structure configuration cases. One of the geometric versions is gap exclusion between the slit grating and comb, wherein a structure is degenerate into the comb with grooves, partially shielded in the aperture plane. This kind of geometry structure is interesting for its metamaterial properties. Another configuration option corresponds to the ribbon grating shielded dielectric substrate excited by proper wave of planar dielectric waveguide from the top. The geometry is realized by replacing the shielding comb with a smooth metal shield. It’s relevant as the radiating aperture of diffraction radiation antenna.
Keywords:diffraction, periodic structure, antenna, mathematical model.
|
|
| |
|
Read the full article …
|
Citation link:
Ostankov A. V. The solution of the electromagnetic wave diffraction problem on a periodic multilayer comb structure and its application for the analysis of future versions of diffraction radiation microwave antennas // Современная наука: актуальные проблемы теории и практики. Серия: Естественные и Технические Науки. -2015. -№05-06. -С. 20-27 |
|
|
LEGAL
INFORMATION:
