Design of 0.22THz Folded-Waveguide Oscillator

The folded-waveguide oscillator can get higher output power than the BWOs. This paper shows the design results of the 0.22THz folded-waveguide oscillator. The design has been conducted using analytic Pierce theory and time-domain simulations. The simulated results shows the maximum output power of the oscillator can reach 5W with the 18kV/50mA electron beam. The electric tunable bandwidth is about 1GHz in the range of 0. $\pmb{219}\mathbf{THz}\sim \pmb{0.22}\mathbf{THz}$ .