WAVEGUIDE POLARIZATION SELECTOR WITH REDUCED LONGITUDINAL SIZE Russian patent published in 2019 - IPC H01P1/161 

FIELD: radio engineering; electronics.

SUBSTANCE: invention relates to radio engineering, specifically to microwave engineering, and can be used in waveguide channels of antenna systems for excitation and polarization selection of two main waves with orthogonal linear polarizations. According to the invention, the first section of the waveguide has a cross-section in the form of an oval, the minor axis of which is parallel to the longitudinal axis of the second section of the rectangular waveguide, and the major axis is parallel to the longitudinal axis of the third segment of the rectangular waveguide. Second section of rectangular waveguide is configured to operate in range (λ_1min, λ_1max), where λ_1min and λ_1max respectively the minimum and maximum wavelengths of the first range, and the transverse dimension A₁ wide walls. Third section of rectangular waveguide is configured to operate in range (λ_2min, λ_2max), where λ_2min and λ_2max is respectively the minimum and maximum wavelengths of the second range, and the transverse dimension A₂ wide walls, wherein λ_1max<λ_2min and A₂≥A₁. Distance S between longitudinal axes of the second and third sections of rectangular waveguides is in range of 0.9(A₁+A₂)/2<S<1.1(A₁+A₂)/2. First diaphragm is located with maximum displacement from end metal wall, and second diaphragm is located with maximum displacement to end metal wall. First longitudinal metal plate has lengthwise dimension L₁ in range (0.4–0.5)A₁ and oval holes, which small axes coincide with longitudinal axis of first section of waveguide, and large axes are perpendicular to it. Second longitudinal metal plate is connected to end metal wall and has lengthwise dimension L₂ in range (0.25–0.45)A₂. On the end metal wall there is a third longitudinal metal plate, which is parallel to the first longitudinal metal plate, and has lengthwise dimension L₃ in range (0.25–0.45)A₂.

EFFECT: use of the invention reduces the longitudinal size of the waveguide polarization selector.

9 cl, 20 dwg