Frequency-selective properties of the flat screen of a final thickness with coaxial-sector apertures

In this paper, the algorithm of calculation of the generalized matrix of scattering of electromagnetic waves of flat perfectly conducting screen of final thickness with coaxial-sector apertures is developed. The operational method investigates reflectance module of the screen at normal incidence flat linearly polarized TE - and TM - mode as function of frequency, and also reflectance module as function of thickness of the screen are calculated. The contrastive analysis of frequency-selective properties of the screen with coaxial-sector apertures and the screen with rectangular apertures is carried out.