Waveguide and Coaxial Rotary Joints Assembly

EVERAXIS designs Waveguide and Coaxial Rotary Joints to transmit power and signals between the stationary and rotating parts of radar and satcom systems.

For over 70 years, EVERAXIS has manufactured both single- and multi-channel Waveguide (WG) and Coaxial Rotary Joints. When engineers need a new design, they combine FEM simulations with lab testing to ensure optimal performance.

EVERAXIS tests each high-power unit at maximum peak power before shipment. These joints are well known for providing excellent isolation between channels.

What is a Waveguide and Coaxial Rotary Joint Assembly?

A Coaxial and Waveguide Rotary Joint bridges high-power signals between the revolving and stationary parts of radar or satcom systems.

The inner conductor of the coaxial line is usually hollow. This design allows engineers to run additional coaxial cables through the waveguide section, connecting them to the coaxial modules when building multi-channel joints.

Rotary joints can have different configurations:

• U-style: both waveguide ports orthogonal to the rotational axis

• F or L-style: one port at a right angle, one in line

• I-style: both ports in line

EVERAXIS produces modules for most frequency bands, from L-band to Ku-band, including double ridge bands. Coaxial channels cover DC up to 40 GHz.

Key applications

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 excellent durability

EVERAXIS Coaxial Rotary Joints have broad bandwidth and small dimensions. The coaxial channels are contactless, choke coupled, or contact-based on high grade materials.