Circular TE₀₁ mode transducer at V-band

In this paper, the V-band circular TE01 mode transducer consisting of a TE10-TE20 mode converter and a TE20-TE01 mode converter is studied. This paper describes a novel TE10-TE20 mode transducer utilizing an H-plane right-angled corner composed of a standard waveguide and an overmoded one. According to the electric field characteristic of the TE0,1 mode, we achieve TE20 rectangular waveguide mode to a TE01 circular waveguide mode by oval-waveguide. The calculation results obtained from the HFSS show that the transducer maximum conversion efficiency could reach 99.08% at 43.4 GHz with a purity of 99.20%，the bandwidth for conversion efficiency beyond than 95% with mode purity over than 98% is about 4.2 GHz. The transducer has high conversion efficiency, simple structure, and it is easy to fabricate. a design can be applied to the low-power test for the high-power microwave devices.