行波管中慢电磁行波与电子注非线性互作用普遍理论

在同时考虑多信号输入和相对论效应的情况下，利用波导激励理论获得了行波管中慢电磁行波与电子注非线性互作用的全三维自洽工作方程组，包括激发方程、运动方程、能量转化方程、相位演化方程等，适合大部分行波管中慢电磁行波与电子注的非线性互作用过程.利用该理论具体分析了一个宽带螺旋线行波管在多信号输入时的交叉调制，并与实验结果进行了比较，验证了理论和计算的正确性.另外，还模拟了一个相对论盘荷波导行波管中的非线性注波互作用过程.关键词：行波管慢电磁行波非线性注波互作用交叉调制

General theory of nonlinear beam-wave interaction in traveling-wave tubes

Using the theory of waveguide excited, the full three-dimensional self-consistent working equations of interaction between slow electromagnetic traveling wave and electronic beam have are obtained in traveling-wave tubes, considering multi-signal inputs and relativistic effect. The equations include excited equation, motion equations, energy conversion equation, phase evolving equation etc., which can be applied to simulate most of nonlinear interactions between slow electromagnetic traveling wave and electronic beam in traveling wave tubes (TWT). The crossmodulation in a wide-band helix TWT is simulated using this theory, and is compared with the experimentation results to confirm the theory. The nonlinear beam-wave interaction processes in a relativistic disk-loaded waveguide TWT are also been simulated using the theory.