Absorption of the Electromagnetic Radiation of the Pyrolyzed Polyacrylonitrile: Model in the 1 to 3 GHz Frequency Range

At the present time the electromagnetic characteristics of composite materials, including polymeric materials, are widely studied for the purpose of their application as radio absorbing coatings and in electronics. One of such materials is pyrolyzed polyacrylonitrile (PPAN). The paper presents a model of electromagnetic radiation absorption by a PPAN layer depending on the layer width and its electrical conductivity.