About Waveguide Rotary Joints

Used in microwave communication applications, a waveguide rotary joint allows one part to be rotated while connected to a fixed part. An example is a rotating radar antenna

In the moving parts, the electrical continuity is achieved using λ/4-chokes which do away with metal contacts.

Waveguide rotary joint facilitates the continuous and regular flow of radio frequency with low insertion loss and well enhanced power-handling capabilities.

Waveguide rotary joint is used in all the high-frequency transmission systems like satellite communication, radars, air traffic control, and surveillance systems.

Different waveguide rotary joints are available which can handle various frequency ranges up to 40 GHz.

Top-quality waveguide rotary joint are now available with very low VSVR -voltage standing wave ratio- and low insertion loss.

Waveguide rotary joint can be custom designed to suit different applications.

The most common mechanical configurations of the waveguide rotary joints are;

U-style-where both the ports are at a right angle to the rotation axis,

L-style-where one port is at a right angle to the rotating axis.

I-style-both transmission lines are in straight lines.

F-Style-One port at right angle rotates and the in-line port is fixed into housing.

These configurations bring versatility and freedom electrical connections.

Raditek Inc. offers all types of  Waveguide rotary joints check out their website.