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对于亚太赫兹波段扩展互作用振荡器(EIO),本文采用折叠波导作为慢波谐振系统,研究了周期数对高频特性的影响,计算了特征阻抗、起振电流随周期数的变化规律,为有效降低起振电流提供了途径.在此基础上,采用PIC进行模拟研究,探讨了EIO在弱电流连续波和强电流脉冲工作方式下的注波互作用和输出特性,深入分析了EIO的周期数调谐、电压调谐的特性.在连续波工作时,EIO的输出功率约2.5W;在脉冲工作方式下,通过电压调谐,EIO的输出功率约26—50W,激发频率约105.26—105.31GHz.采用慢走丝加工方法,探讨了高频系统的两种加工方式,测试了慢波系统的谐振特性、输出窗的传输特性,并与模拟结果进行了对比分析,验证了该加工方法在该频段的可行性和实用性,为实用型整管研究提高了重要依据.
For the Asia-Pacific Hertzian band-extended oscillator (EIO), the folded waveguide is used as the slow-wave resonance system. The effect of the number of cycles on the high frequency characteristics is studied. The variation of the characteristic impedance and the starting current with the number of cycles is calculated. Which can effectively reduce the start-up current.On the basis of this, the PIC simulation is used to study the wave injection interaction and output characteristics of EIO in the weak current continuous wave and high current pulse operation mode, the cycle of EIO The number of tuning, the characteristics of voltage tuning in the continuous wave work, EIO output power of about 2.5W; in the pulse mode of operation, through voltage tuning, EIO output power of about 26-50W, the excitation frequency of about 105.26-105.31GHz. The paper discusses the two processing methods of high-frequency system, tests the resonant characteristics of the slow-wave system and the transmission characteristics of the output window, and compares with the simulation results to verify the processing method in the frequency band Feasibility and practicality for the practical application of the whole tube to improve the important basis.