Products / RF Rotary Joints

Waveguide Rotary Joints


Waveguide Rotary Joints are used for the rotary transmission of power and signal between the stationary and rotating parts of a radar or satcom system.

EVERAXIS has designed and produced single and multi channel Waveguide (WG) Rotary Joints since 1958. Every new design is simulated in FEM software as well as physically tested for optimal performance. Each high power Waveguide Rotary Joint is tested at maximum peak power before shipment.

A Waveguide Joint is the high power connection between the rotating part and the stationary part of a radar and satcom system.

The basic design for the Everaxis Waveguide Rotary Joints is two waveguide to coaxial transitions with a coaxial line in between. This coaxial part is symmetrically circular, allowing for free rotation without affecting performance.

The inner conductor of the coaxial line is usually hollow, allowing further coaxial cables to be put through the wave guide part and to be used with the coaxial modules when building multi-channel Rotary Joints.

The Rotary Joints can have both waveguide ports at a right angle to the rotational axis (« U-style »), one waveguide port at a right angle and one in line (« L-style » or » F-style ») or both waveguide ports in line (« I-style »).

Waveguide Rotary Joint modules are available from EVERAXIS on most frequency bands from L-band to Ku-band, including double ridge bands.

EVERAXIS Waveguide Rotary Joints are used where the following requirements are critical:

• High isolation for less interference between channels

• Low insertion loss to improve radar performance

• High power capability for maximizing radar range

• Long life and exellent durability

These WG’s are non-contacting, choke coupled for high power and low loss performance.