A New Type of Highly Efficient, Second Harmonic, Broadband Tunable Gyrotron Device Utilizing a Hybrid Interaction Scheme
新型高效率二次谐波宽带可调复合互作用回旋管

Based on the beam-wave mode-coupling theory, a principle of gyrotron device utilizing a hybrid interaction scheme of Backward-Wave Oscillator, Klystron Ballistic-Bunching and Traveling-Wave Tube (Gyro-BWO-KBB-TWT) is presented in this paper. Theoretical analysis of a Ka-band second harmonic tunable gyro-BWO-KBB-TWT indicates that the device efficiency of 40% and magnetic tuning bandwidth of 10% are achieved. A gyrotron oscillator employing the hybrid interaction scheme can realize highly efficient, high-power output and broadband continuous magnetic tuning in millimeter wave band.