Siberian Federal University

Issue

Journal of Siberian Federal University. Engineering & Technologies. 2026 19 (6)

Authors

Azarov, Maksim V.

Contact information

Azarov, Maksim V. : National Research University of Electronic Technology (Zelenograd, Russian Federation);

Keywords

metasurface; OAM; orbital angular momentum; backscattering reduction; thin-film metasurface; conformity

Abstract

The results of a numerical study of the conformal properties of a thin-film reflecting metasurface forming an orbital angular momentum (OAM) to reduce monostatic backscattering are presented. Full- wave modeling in the CST Studio Suite was performed for smooth cylindrical (one axis) and spherical (two axes) bends with radii from ∞ to 2.5λ, as well as for the oblique incidence of a plane wave with left circular polarization in the frequency range 9–10 GHz. A comparison with a reference metasurface containing the same meta-atoms without azimuthal rotations made it possible to identify the contribution of the OAM profile. It is shown that the characteristic intensity dip in the backscattering diagram persists up to a radius of 2.5λ, and at radii ≥4λ, the suppression is at least 10 dB. With an inclined drop of up to 60°, the maximum backscatter reduction reaches 23 dB without additional side lobes. The results confirm the robustness of the OAM phase distribution to geometric distortions and the possibility of using such metasurfaces as coatings for surfaces of double curvature

Pages

793–802

EDN

KHYHQX

Paper at repository of SibFU

https://elib.sfu-kras.ru/handle/2311/159360

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).