Design of G-band Folded Waveguide Traveling-wave Tube

Abstract

When it comes to the terahertz band, it is a challenging task to design traveling-wave tube. In this paper, the design of G-band folded waveguide traveling-wave tube (FWGTWT) is introduced in detail. The simulation results show that the folded waveguide circuit can produce over 27.5dB gain and over 15W output power within 10GHz bandwidth, when the beam current of the electron optical system (EOS) is 40 mA and the beam transmission rate is 100% with cathode voltage -19.25kV and the first anode -3kV.