METHOD OF DETERMINING ELECTROPHYSICAL PARAMETERS OF METAMATERIALS Russian patent published in 2020 - IPC G01N22/00 G01R27/26 

FIELD: physics.

SUBSTANCE: invention can be used for analysis of metamaterials. Method of determining electrophysical parameters of metamaterials involves placing a plate of the analyzed material on a metal substrate, exciting along the metal substrate electromagnetic wave with vertical polarization, falling on the plate of the analyzed material at an angle to the normal drawn along the metal substrate to the interface "metal substrate – analyzed material", determining the belonging of the analyzed plate to the metamaterial by the position of the refracted beam of the electromagnetic wave relative to the normal to the boundary of the "analyzed material – metal substrate" interface and determining its refraction index, electromagnetic wave with vertical polarization, incident on the plate of the analyzed material at an angle to the normal drawn along the metal substrate to the boundary of the "analyzed material – metal substrate" interface, is excited in series at frequencies increasing from ƒ_i to ƒ_N with a discrete pitch in frequency Δƒ, attenuation coefficient α(ƒ_i), α(ƒ_i+1)…α(ƒ_N) of each electromagnetic wave is measured over the surface of the analyzed material along a line perpendicular to its surface along the side of the normal to the interface of the "analyzed material – metal substrate", where is located and incident electromagnetic wave, attenuation coefficients are compared to zero value, if α(ƒ_i)>0, then a decision is made that the plate at frequency ƒ_i is a metamaterial using two values of attenuation coefficients at two adjacent frequencies α(ƒ_i) and α(ƒ_i+1), on which the plate is a metamaterial, provided that determine its value effective dielectric permittivity ε_eff and magnetic permeability μ_eff solving the system of two dispersion equations.

EFFECT: providing the possibility of increasing the accuracy of determining the boundaries of the frequency range, where the analyzed material is a metamaterial, as well as improving accuracy and reliability of measuring its values of effective dielectric and magnetic permeabilities.

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