A high power TM01 circular to TE10 rectangular waveguide mode converter

A TM₀₁ wave is incident in a cylindrical waveguide in which only the TE₁₁ and TM₀₁ modes can propagate. This incident TM₀₁ field is disturbed by a short at the end of the waveguide toward which the incident wave travels. Two identical apertures in the waveguide wall cause additional disturbances. Opposite each other, these apertures feed two identical rectangular waveguides. The lateral walls of the rectangular waveguides butt up against the edges of the apertures. The short edge of each aperture is parallel to the axis of the cylinder. Only the TE₁₀ dominant mode can propagate in the rectangular waveguides. Each rectangular waveguide is terminated with an arbitrary load. The load that terminates one rectangular waveguide may be different from the load that terminates the other rectangular waveguide