Fig. 3From: A C-band broadband ortho-mode transducer for radioastronomy polarimetryA cut-section view of the main part of the OMT body. Showing: 1 the square waveguide; 2 the septum; 3 smooth square-to-rectangular transition; 4 rectangular waveguide; 5 the aperture directional coupler and 6 tuning back-shortBack to article page