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A waveguide rotary joint is used in microwave communications to connect two different types of RF waveguides. Because coaxial parts are symmetrical in ø direction, free rotation without performance degradation is accomplished. In the rotating part, electrical continuity is achieved by λ/4-chokes eliminating metal contacts. The Rotary Joints can have both waveguide ports at a right angle to the rotational axis, "U-style", one waveguide port at a right angle and one in line, "L-style" or both waveguide ports in line. "I-style". Waveguide Rotary Joint modules are available for all frequency bands. Common materials for waveguide rotary joints include aluminum, brass, bronze, copper, and silver.
References
- www.ecplaza.net "WAVEGUIDE ROTARY JOINTS"
- Drehdurchführung
- Zhiqiang Zhang, Kaibin Xue, Zibing Weng (2022). "A High-Power Radar Rotary Joint". Frontiers in Physics. 10. doi:10.3389/fphy.2022.948570.
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