RADAR
Key Components of an
Integrated RF Rotating
Subsystem
PROGRESSIVE ROTATING
SUBSYSTEMS
How new technology is restoring life to aging ATC and military rotary joints, and integrating
innovative components into existing subsystems
Ron Lambrecht, Senior Applications Engineer, Diamond Antenna and Microwave
74 AIR TRAFFIC TECHNOLOGY INTERNATIONAL 2020
At the heart of an ATC radar is a
radio frequency rotary joint
subsystem. This subsystem is used to
pass power and signals through the rotating
interface; separating the antenna above and
the radar processing electronics below.
Although complex radio frequency (RF)
rotating subsystems represents just a fraction
of an entire ATC radar, maintenance and
overhaul of these components is key to
successful long-term operation of the radar.
ATC Radar Systems which use RF rotary
joints include Air Route Surveillance Radar
(ARSR), Airport Surveillance Radar (ASR),
Secondary Surveillance Radar (SSR), Airport
Surface Detection Equipment (ASDE) and
Terminal Doppler Weather Radar (TDWR)
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