Rotary Joints (rotary couplers) are used to transmit microwave energy from stationary lines to rotating lines.
The rotary joint is an electro-mechanical device with RF performance dependent upon rigorous electrical and mechanical design.
Available styles are defined by physical geometry as follows:
- I-style - Two in-line arms both collinear with the axis of rotation.
- L-style - One arm is perpendicular to the axis of rotation.
- U-style - Both arms are perpendicular to the axis of rotation.