A Combined Radioabsorber Based on a Ferrite Layer and Resistive Square Gratings

A radioabsorbing structure shielding a metal plane in the form of a ferrite layer with a dielectric layer containing a grating of resistive squares has been considered. The diffraction problem of a plane electromagnetic wave incident perpendicular to the surface of the structure has been solved. Bas...

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Bibliographic Details
Published in:Technical physics letters 2020-09, Vol.46 (9), p.874-876
Main Authors: Ponomarenko, V. I., Lagunov, I. M.
Format: Article
Language:English
Subjects:
Classical and Continuum Physics
Electromagnetic radiation
Ferrites
Optimization
Physics
Physics and Astronomy
Reflectance
Reflection
Shielding
Wave diffraction
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Summary:A radioabsorbing structure shielding a metal plane in the form of a ferrite layer with a dielectric layer containing a grating of resistive squares has been considered. The diffraction problem of a plane electromagnetic wave incident perpendicular to the surface of the structure has been solved. Based on the solution of the optimization problem, it is shown that, in contrast to the ferrite layer, which has a low reflection coefficient in the decimeter and meter wavelength ranges, a combined structure with a total thickness of less than 5 cm provides low reflection in the centimeter range.
ISSN:1063-7850
1090-6533
DOI:10.1134/S1063785020090084