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中文摘要：
本文从有源麦克斯韦方程组出发，系统地推导了螺旋波纹波导的色散方程及非线性注波互作用理论，数值计算结果与已有的实验报道基本相符．在此基础上，设计了W波段螺旋波纹回旋行波管，工作电压80kV,工作电流5A，中心频率95GHz，3dB带宽约4．5％，饱和增益52dB，最大输出功率142kW,电子效率达20％-35％．最后，本文计算了电流，电压及输入功率的改变对W波段螺旋波纹波导回旋行波管输出性能的影响．
英文摘要：
Gyro-TWT is one of the most promising candidates for the application of the transmitter microwave source of the next-generation imaging radar; meanwhile, it plays an important role in national security. Gyro-TWT with helical waveguide is capable of generating broad-bandwidth radiation, as well as high stable ability. In this paper, we derive the dispersion equation of helical waveguide and the non-linear theory of calculating the beam-wave interaction. Numerical stimulation results accord with the experimental results. We design a W-band gyro-TWT operating at a 80 keV, 5 A electron beam, which can produce an output power of 142 kW, with 3 dB bandwidth 4.5%, cantral frequency 95 GHz and saturation gain 52 dB. Finally, we calculate the effect of variation of voltage and current on the output performance of gyro-TWT with helical waveguide.
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Nonlinear full-wave-interaction analysis of a gyrotron traveling wave tube amplifier based on a loss
Stabilization of the potential multi-steady-state absolute instabilities in a gyrotron traveling-wav
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