Electromagnetic Wave Diffraction on a Metal Diaphragm of Finite Thickness

Abstract

Abstract: The two-dimensional problem of the diffraction of an electromagnetic wave by a metal diaphragm of finite thickness in an infinite rectangular waveguide is solved and investigated. Using the method of the integral-series identity, the problem is reduced to an infinite system of linear algebraic equations. Through computational experiments, it was shown that the expansion coefficients of the vectors of the diffracted electromagnetic field from the spectral parameter are of a resonant nature. Based on this, it was concluded that the waveguide region corresponding to the hole in the diaphragm is resonant. Moreover, the resonant frequencies of this region are close to the natural frequencies of the corresponding resonator without holes.