Infinite linear waveguide antenna array with metal-dielectric structures in the "floquet channel"

Abstract

An electrodynamics calculation is performed for an infinite waveguide antenna array in the form of open ends of waveguides, in the near zone of which a metal-dielectric structure is located. This metal-dielectric structure is located in the "Floquet channels" and is a combination of a dielectric coating over the antenna array and horns. In this case, the horns are not a continuation of the waveguides, but are located at some distance from them. The space between the waveguides and the horns is filled with a dielectric. A system of equations that allows calculating the reflection coefficients of incident waves in waveguides is obtained.

Study of electromagnetic wave diffraction by a dielectric coating and metal diaphragm over an endless waveguide antenna array

“…. Based on Green's second formula, the integral representation for the electric field strength in region 2 has the form: The representation for the electric field strengths for the selected regions, the expression for the Green's function of the second region, the boundary conditions for the problem under consideration are given in [7].…”

“…It is quite obvious that a complex metal-dielectric structure (Fig. 1, a), which is located in the "Floquet channel" can significantly change the characteristics of radiation due to the diffraction of the surface wave on this structure [7]. In particular, the magnitude of the modulus of the reflection coefficient of the incident wave in the waveguides can be significantly changed.…”