Development of high-power and ultra-high-vacuum waveguide coupler working at C/X band

TL;DR

This paper presents the development of high-power, ultra-high-vacuum waveguide directional couplers operating at C/X band frequencies, demonstrating satisfactory performance and qualified microwave measurement results.

Contribution

It introduces a novel design with symmetrical even holes for efficient power coupling in high-power, ultra-high-vacuum waveguide couplers at C/X band frequencies.

Findings

Achieved high-power handling capability

Demonstrated ultra-high-vacuum compatibility

Validated performance through microwave measurements

Abstract

Waveguide directional couplers working at 5.712/11.9924 GHz are developed. Even holes symmetrical to the structure are drilled along the central line of the narrow-wall of waveguide, which are used to couple the electromagnetic power from the main-waveguide to the sub-waveguide. The final prototypes have got satisfactory performances of high-power, ultra-high-vacuum and high-directivity. The microwave measurement results are also qualified.