METHOD FOR DETERMINING THE ELECTROPHYSICAL PARAMETERS OF DIELECTRIC AND MAGNETODIELECTRIC COATINGS WITH FREQUENCY DISPERSION IN THE MICROWAVE RANGE Russian patent published in 2021 - IPC G01N22/00 

FIELD: measuring equipment.

SUBSTANCE: invention relates to the field of measuring technology, in particular to methods for determining complex dielectric and magnetic permittivity, taking into account their frequency dispersion, as well as the thickness of dielectric and magnetodielectric coatings on the metal surface, and can be used for quality control of coatings during the development and operation of radio-absorbing materials and coatings, as well as in chemical, paint and other industries. The expected result is achieved by creating a microwave electromagnetic field of a traveling surface wave of type E over the dielectric-metal surface in a single-mode mode, as well as additional excitation of surface electromagnetic waves of E-type sequentially at K-wavelengths, after which appropriate measurements and calculations are carried out, which make it possible to find the theoretical values of the complex coating thickness coefficient b. The values of the real and imaginary parts of the complex magnetic permeability, as well as their functional dispersion dependences on the wavelength for the entire studied range λ_k, …, λ_K make it possible to estimate them at any wavelength of interest, while the errors in estimating the complex dielectric and magnetic permeability for the entire studied range do not exceed 7%, and the error in estimating the thickness does not exceed 6%.

EFFECT: increasing the accuracy of determining the complex dielectric and magnetic permittivity of dielectric and magnetodielectric coatings, with their frequency dispersion, as well as their thickness.

1 cl, 3 dwg