A novel multi-channel and high-power microwave rotary joint

This study proposes a novel multi-channel and high-power microwave rotary joint. A 17-channel microwave rotary joint has been constructed, measurements show every single-channel insertion losses under 0.4 dB, VSWR is under 1.2, and inter-channel isolations exceeding 46dB, high-power transmit channel (20kW, CW) also tested without cooling method, which could avoid excessive temperature rise and reduce the noise temperature of the system.

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