Fabrication and cold-test of a wideband Ka-band dielectric-loaded traveling-wave tube

摘要

We have fabricated a Ka-band dielectric loaded traveling-wave tube with high instantaneous bandwidth of 10GHz centered at 33.25GHz. The process of fabrication involves copper and ceramics machining and several hierarchical assembly steps. We report on the fabrication steps and RF system design. We are currently doing cold-test of the TWT using network analyzer and Ka band signal source.