RF rotary joint HR32-2-SMA-4.5

HR32-2-SMA-4.5 RF rotary joints are designed according to the skin effect of high frequency signals and the structure of coaxial cable. Support single or multi-channels to transfer DC~18GHz RF signals, also can be integrated electric and other signals. HF rotary joint high frequency signal use 50Ω characteristic impedance RF coaxial structure.


ParametersChannel 1 ValuesChannel 2 Values
Frequency RangeDC-4.5DC-4.5
Standing Wave Ratio1.50:12.00:1
Standing Wave Ratio Fluctuation0.050.25
Max Insertion Loss0.50dB1.0dB
Insertion Fluctuation0.05dB0.25dB
Average Power5W5W
Degree of Isolation<―40dB―><―40dB―>
Maximum Speed300 rpm300 rpm
Torque8 OZ.-in.8 OZ.-in.
Estimated Life Cycle25*10revs25*10revs

Typical drawing

RF slip ring draw


◆ Frequency: DC~18GHz

◆ Can be combine with power and signal transmission

◆ Low insertion loss and voltage standing wave ratio

◆ Support 1 or 2 RF channels

Model designation

name of rf slip ring