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- W4361862409 abstract "Scattering characteristics of anisotropic cylindrical phase-gradient metasurfaces (MSs) with various helical Pancharatnam-Berry phase (PB-phase) coding are studied. The efficiencies of the scattering field reduction of circularly polarized (CP) waves in the forward half-space is compared for three different MS models with the same PBphase gradient in the azimuthal direction and different phase gradients in the axial direction. The metasurfaces are conformally located on semi-cylindrical metallic polyhedral prisms. The meta-particles are of the form of triple coupled split-ring resonators. Spiral coding of the PB-phase of MS unit cells in the azimuthal and axial directions is carried out by the rotation of the meta-particles. The effect of constant phase gradients on the frequency characteristics of backscattered fields and bistatic diagrams of scattering of CP-waves in the azimuthal and meridional planes is numerically estimated. It is shown that the axial phase gradient causes more efficient anomalous scattering of co-and cross-polarized CP-waves. It leads to the deviation of intense diffraction lobes from the normal in the meridional plane by a large angle, with a shift of the lobes in the azimuthal plane. Bigradient MSs provide the scattering field reduction of CP-waves by at least 10 dB in the band from 10-12 GHz to 18.5 GHz in almost the entire forward half-space in the azimuthal plane and in the sector of angles up to ± 45° in the meridional plane." @default.
- W4361862409 created "2023-04-05" @default.
- W4361862409 creator A5044978508 @default.
- W4361862409 date "2022-11-23" @default.
- W4361862409 modified "2023-09-24" @default.
- W4361862409 title "Cylindrical Anisotropic Metasurfaces with Pancharatnam-Berry Phase Bigradient Helical Coding and Anomalous Scattering" @default.
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- W4361862409 doi "https://doi.org/10.1109/rmc55984.2022.10079303" @default.
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