Energy Characteristics of an Antenna Array of Transverse Slots for Various Combinations of Filling the Waveguide with a Multilayer Dielectric

This work is devoted to the study of the energy characteristics of a waveguide-slot array with transverse slots cut in the wide wall of a waveguide having a multilayer dielectric slowing down structure inside it. The problem is solved by a modified method of successive approximations in combination with the theory of waveguide-slot radiators. Calculations are carried out and the energy characteristics of the system are analyzed in the frequency range for variants of a single-layer, two-layer, and multilayer dielectric slowing down structure filling the waveguide. The calculations were carried out under the condition of equality of the slowdown coefficients at the center frequency of the range under consideration for all the variants of the waveguide filling under study. Comparison of the results of the calculated and experimental studies of the radiation coefficients of the waveguide-slot array with a multilayer dielectric structure is carried out. The possibility and features of the use of a multilayer slowing down structure in waveguide-slot array are shown.