Scattering of a plane wave by a cascade of two frequency-selective structures

Propagation of a plane electromagnetic wave through a multilayer frequency-selective dielectric structure with biperiodic metallization of two interfaces is considered. A method is proposed for calculation of the reflection and transmission coefficients of the structure. Computation results are presented for a structure with gratings consisting of metal rings. The effects of longitudinal and transverse shifts of gratings on the electrodynamic characteristics of the frequency-selective structure are studied. The computation results are compared to experimental data obtained in the microwave band.