Design of a WR10 Rotary Joint with Two 3D-printed TE01 Mode Transducers

This paper describes the design and construction of a rotary joint based on two 3D-printed TE
₀₁
mode transducers. The achieved operating bandwidth of the rotary joint is 25 GHz from 82 GHz to 107 GHz. The attenuation over the whole achieved bandwidth never falls below -4 dB at an amplitude variation of 1.25 dB over a whole rotation. The phase variation is less than 14.8° over a whole rotation, which makes this rotary joint suitable for channel-sounding and measurement purposes.