Passage of electromagnetic wave through a rectangular wave guide with an active rectangular film

The proposed work examines the passage of the electromagnetic wave through a rectangular wave guide with active film and magnetized ferritic layers. Ferrimagnetic layers are located between metal planes with perfect conductivity. A dispersion equation has been obtained to calculate the constant spread in the structure in question. The dispersion equation was solved by the Jeeves–Hook method. The graphs obtained at different parameters of the film and at different values of the magnetizing field are presented.