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This paper presents a 0.22THz big beam-tunnel folded-waveguide (FWG) traveling-wave tube (TWT) with a phase-velocity taper. The big beam tunnel was applied in order to reduce the processing difficulty and increase the capability of the direct current power. And the input and output coupling structures and attenuator were simulated and the entire tube transmission characteristic was analyzed by employing...
Analysis of a Ka-band relativistic sheet beam traveling-wave-tube (RTWT) by simulation method is presented in this paper. The single grating rectangular waveguide is chosen for its slow wave structure (SWS) due to its flat shape, better transmission characteristics and superiority for fabrication, mechanical robustness. The high-frequency characteristic of the single-grating rectangular, the transmission...
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