Specific features of electrodynamic characteristics for double-row periodic systems based on diffraction bar gratings

Electrodynamic characteristics of double-row periodic systems which are formed by metal bar gratings of rectangular cross-section under their excitation by dielectric waveguide disposed along their longitudinal axis are described. The possibility of effective adjustment of the power level of emitted harmonics and of oscillation selection by changing the longitudinal and angular coordinates of a double-row periodic structure is presented.