A G-band wideband CW folded waveguide TWT

Institute of Applied Electronics has developed a wideband continuous waves (CW) folded waveguide Traveling Wave Tube (FWTWT) amplifier operating at G-band. The design and fabrication on CW FWTWT was presented, including electronic-optical system, folded waveguide slow wave structure (FWSWS) and input/output (I/O) windows system. By the measurement, the amplifier produced the maximum output power 18W at frequency 216GHz with 10GHz -3dB bandwidth at CW work. The maximum gain is 28.2dB.