Electromagnetic response from composite radiomaterials based on multiwall carbon nanotubes at microwave frequencies

Kuleshov, G. E.; Zhuravlyova, Yelena; Dotsenko, O. A.

doi:10.1109/sibcon.2015.7147115

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Electromagnetic characteristics of composite materials based on hexaferrite powders and a silicone binder

Vasilenko

Zhabin

Kuleshov

2020

J. Phys.: Conf. Ser.

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This article studies the electromagnetic properties of composite materials based on hexaferrite powders and a silicone binder. The results of this study are presented. Samples of radiomaterials based on hexaferrite powders Z-, W-, M-type and silicone binder were made. The measurements were carried out in a frequency range from 100 MHz to 18 GHz. The frequency dependencies of complex permittivity and permeability are shown. Based on the data obtained, the electromagnetic response for composites of various thicknesses located in free space and on the metal was calculated. The composite located on the metal, which contains 80 wt.% BaCo0.6Zn1.4Fe16O27 and has a thickness of 2 mm, can reduce the level of reflected radiation by more than 100 times in the frequency range from 12.5 to 18 GHz. A composite material containing 80 wt.% BaCo2.4Ti0.4Fe23.2O41 is effective narrowband absorber (reduces reflection by more than 100,000 times) at a frequency of 11.6 GHz, at a thickness of 2.6 mm.

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