行波管相位一致性的理论研究与计算机模拟

 采用行波管一维大信号非线性理论，建立了高频参数和外部工作状况零散模型，对影响增益、相位频率特性的主要因素进行了理论分析和数值计算，分析了如何合理地选择相位一致行波管工作点，为新近研制的相位一致行波管提供了计算机模拟并得到了很有价值的计算结果。

Computational investigation of phase and gain matched op erationfor helix traveling-wave tube

Designing an octave bandwidth h el ix traveling wave tube for phase and gain matched operation in the EHF region presents many obstacles, the dimensional controls must be imposed in the design and the fabrication of parallel operating are difficult. Recent advance in th e state of computer modeling offer the possibility to evaluate the effect of the slow wave structure parameter and operating parameter variations, such as man ufa cturing tolerances, this will enable manufacturers to determine the cost effecti veness of controlling the dimensions of the component parts of the TWT. The comp uter code MAFIA is used to determine the effect on dispersion and on axis inter action impedance of several helical slow wave circuit parameter variations. In this paper, computer code Phase Coincidence TWT CAD is programmed, which includ es helical slow wave circuit code and large signal helical TWT interaction cod e. The effect on curve of gain and phase dispersion for frequency, when helical slow wave circuit parameter and operating parameter vary, is analyzed. By using this code it is possible, for the first time, to design a complete TWT via comp uter simulation.