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In order to improve the power capacity of W-band Travelling Wave Tube (TWT), this paper proposed an overmoded TWT interaction circuit. The mode selection and circuit design was presented. A mode converter was also designed to excite the higher interaction mode. The simulation results show that nearly 1 kilowatts power could be reached in W-band.
A novel slow wave structure (SWS) called sine ridge waveguide (SRWG) has been proposed for a wideband high-power terahertz radiation source. The cold bandwidth of the SRWG is similar to the sine waveguide structure. Meanwhile, the interaction impedance of the SRWG is about 70% higher than sine waveguide at 0.65THz with the same dimensional parameters. Furthermore, it possesses low ohmic losses and...
Design and development of a high power, widebandwidth W-band travelling wave tube (TWT) is presented in this paper. The design and simulation covers folded waveguide (FWG) circuit, electron gun, periodical permanent magnet system, and coupling window with the emphasis on the FWG optimization and particle-in-cell simulation by Computer Simulation Technology (CST) particle studio. Two TWT prototypes...
THz regenerative oscillator by combining folded waveguide TWT with delayed feedback leg was investigated, which included preliminary design and 3D beam/wave simulation to lay a foundation for research and development of THz regenerative oscillator.
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