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回旋行波管放大器是高功率毫米波雷达发射系统最重要的候选者.通过对回旋行波管放大器中的绝对不稳定性、回旋返波振荡以及电子注_波互作用的研究,讨论了回旋行波管的稳定性、寄生模式的抑制和工作参数的优化等问题,给出了W波段TE01模回旋行波管放大器的模拟设计结果.PIC粒子模拟结果表明,在电子注电压100kV、电流10A、工作磁场3·52T时,94GHz的基波回旋行波管放大器可获得大于250kW的输出功率、40dB的增益、大于25%的效率和约5%的带宽.
The gyro-traveling-wave tube amplifier is the most important candidate for the high-power millimeter-wave radar transmitting system.By studying the absolute instability, the gyro-to-back oscillation and the electronic injection-wave interaction in the gyro-TWT amplifier, The stability of traveling wave tube, the suppression of parasitic mode and the optimization of working parameters, the simulation results of the W-band TE01 mode gyrotron traveling-wave tube amplifier are given.PIC particle simulation results show that at the electron injection voltage of 100kV, the current of 10A , The working magnetic field of 3. 52T, 94GHz Fundamental Gyro TWT amplifier can be more than 250kW output power, 40dB gain, more than 25% efficiency and about 5% bandwidth.