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RF Rotary Joints

In contacting rotary joints, the inner and outer conductors of the stator and rotor are DC-coupled. The maximum frequency depends on the diameter of the coaxial line. These coaxial rotary joints are used for broadband applications, allowing signal transmission in the frequency range from DC up to 67 GHz. Specially designed slip rings can also be used in some cases for low frequencies. Depending on the unit size, contacting systems of this type can transmit signals from DC up to 120 MHz.

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