Rotary joints are suited for Ku-band SOTM antennas

1st September 2014
Nat Bowers

Expanding the company's range of in-house manufactured microwave rotary joints, Link Microtek has introduced the AMCORJD-Ku dual-channel coaxial device. Typically deployed on military or commercial mobile platforms such as vehicles or aeroplanes, the rotary joints have been designed for low-profile antennas for Ku-band satellite-on-the-move high-data-rate communication systems.

Equipped with right-angled coaxial connectors and a height of only 31.6mm, the rotary joints minimise the vertical space required for cables. A high-current capability on the receive channel allow both the antenna’s LNB and the motors that keep the antenna locked on to the satellite to be powered via the rotary joint. Saving even more space, this eliminates the need for additional slip rings.

Operating over a 13.75-14.5GHz frequency range, the transmit channel provides a power rating of 40W CW, a maximum VSWR of 1.4:1 and a typical insertion loss of just 0.6dB. Capable of DC to 2.15GHz at a microwave power of up to 1W CW, the receive channel features typical VSWR and insertion loss of 1.5:1 and 0.5dB, respectively. The receive channel also has a maximum current rating of 2A at 24VDC.

Comprised of more than 40 separate precision-engineered parts, the AMCORJD-Ku rotary joint measures 36.0x31.6mm excluding the female SMA-type coaxial connectors. The body of the device is fabricated from aluminium with an Iridite finish and incorporates a 63.5mm-diameter bulkhead flange as standard.

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