STRUCTURAL HIGH-TEMPERATURE MATERIAL FOR ABSORBING ELECTROMAGNETIC RADIATION IN A WIDE RANGE OF WAVE LENGTHS Russian patent published in 2018 - IPC H01Q17/00 

FIELD: technological processes.

SUBSTANCE: invention relates to the field of high-temperature broadband structural radio-absorbing materials. High-temperature radio-absorbing composite with a thermal resistance up to 1,000 °C and briefly higher, containing at least two layers with low dielectric losses and at least one layer with high dielectric losses, in which a layer with high dielectric losses is located between the layers with low dielectric losses and contains absorbing elements homogeneously distributed in the inorganic binder. In this case, inorganic binder includes components that make up layers with low dielectric losses, and these layers are fiber reinforced. Components included in the layers with low dielectric losses can be Al₂O₃ and SiO₂, and the absorbing elements in the layer with high dielectric losses can have a prismatic shape and comprise silicon carbide and element Fe. In addition, a layer with high dielectric losses can additionally be characterized by high magnetic losses.

EFFECT: invention can be used to effectively reduce the level of reflected electromagnetic radiation in the range of 1–18 GHz.

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