[Waveguide Dual-Channel Rotary Joint ]WR28 Dual-Channel Rotary Joint for Ka-Band SOTM Systems

To address Ka-Band satellite-on-the-move (SOTM) requirements, Dolph Microwave has added WR28 Dual-Channel Rotary Joint model DH-320WRJUIPMA to its family of microwave rotary joints. This miniature dual-channel device features a high-power transmit channel implemented in a right-angle WR28 waveguide on the fixed (input) side and a female K-type coaxial connector on the rotating (output) side, while the receive channel uses two female SMA connectors.

The central transmit channel of the DH-320WRJUIPMA covers Ka-Band frequencies from 27.5 to 31 GHz and delivers excellent microwave performance, with a maximum power rating of 40 W CW, a typical insertion loss of only 0.5 dB and a maximum VSWR of 1.25:1. The L-Band receive channel uses two female SMA coaxial connectorsand normally operates over the DC to 2.0 GHz frequency range. It offers a microwave power rating of 5 W CW, a maximum DC current rating of 500 mA (for powering the LNB), an insertion loss of 0.25 dB and a typical VSWR of 1.5:1.

WR28 Dual-Channel Rotary Waveguide Joint

• Model：DH-320WRJUIPMA
• Channel 1：WR28
• Operating Frequency：27.5-31.0 GHz
• VSWR (Max)：≤1.50
• Insertion Loss (Max)：0.5 dB
• Insertion loss WOW：0.2 dB
• Average Power：40 W
• Peak Power：0.4 KW
• Flange：FBP320 (Cover) / FBM120 (Grooved)
• Channel 2：Coaxial
• Operating Frequency：DC-2.0 GHz
• VSWR (Max)：≤1.50
• Average Power：5 W
• Insertion Loss (Max)：0.3 dB
• DC Power：20 V, 0.5 Amp
• Isolation Channels：50 dB
• Material：Aluminum
• Inside Finish：Conductive Oxidation
• Outside Finish：Anticorrosion White Paint
• Style：I style
• Temperature Range：-55°C ~ +70°C