MATHEMATICAL MODEL OF A MICROWAVE ABSORBING MATERIAL

Abstract

In this paper, a mathematical model of a multilayer microwave absorbing coating is proposed, and an analysis of its main characteristics is carried out. The theoretical dependence of the reflection coefficient on the main material characteristics has been determined. The influence of dielectric and magnetic permeabilities on the reflection coefficient of the proposed system has been studied, and optimal system parameters for effective absorption of electromagnetic waves in the frequency range of 2–18 GHz have been identified. The mechanism of electromagnetic energy absorption in a dielectric material within the specified frequency range has been analyzed. Dependencies of the complex dielectric and magnetic permeabilities of the model material have been constructed and analyzed. Reflection coefficient dependencies of the vacuum-material-ideal conductor system have been constructed. The analysis of experimental studies revealed potentially promising composite materials, in particular, graphene foam (CGF), which demonstrates a high level of absorption. Further research should focus on improving the composition and mechanical properties of such materials.