The possibility is shown of a directional change of the dielectric permittivity of carbon foam promising for the use in shielding devices in the microwave frequency range. The frequency dependences of the transmission (T) and reflection (R) coefficients in the Ka-band are experimentally analyzed for the foams with the reticular structure. By the methods of 3D-modeling, the effect of the skeleton conductivity and pore and windows size on the value of electromagnetic shielding provided by such a medium is considered.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 10, pp. 160–166, October, 2016.
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Kuzhir, P.P., Letellier, M., Bychanok, D.S. et al. Electrical Properties of Carbon Foam in the Microwave Range. Russ Phys J 59, 1703–1709 (2017). https://doi.org/10.1007/s11182-017-0964-3
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DOI: https://doi.org/10.1007/s11182-017-0964-3