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Integrated Rotary Joint and Slip-Ring Assembly

Integrated Rotary Joint and Slip-Ring Assembly
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A compact, integrated rotary joint and slip-ring assembly (RJSA) has been introduced for use in the stabilized antennas of both commercial and military Ka-band satellite-on-the-move (SOTM) communication systems. These systems are deployed on mobile ground vehicles, ships, or aircraft to provide broadband network access for high-data-rate applications such as real-time high-definition video or transmission of telemetry data. By combining the functions of the microwave rotary joint and slip-ring into one device, the AM28RJDSR integrated assembly helps SOTM system manufacturers with the key design consideration of minimizing the height of their antenna radomes. This dual-channel unit uses a central 27.5 to 31.0 GHz channel, implemented in WR28 waveguide and K-type coax, for transmitting RF signals with a power of up to 40W, while a DC to 2.15 GHz SMA coaxial outer channel is provided for L-band receive signals. The integrated slip-ring conveys electrical power from the SOTM system’s stationary pedestal to components on the rotating side, including motors, encoders, and GPS receivers. 

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