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采用分区求解场及边界场匹配方法推导出含有吸收介质波导的色散方程及突变结构高频腔体混合模式的场匹配方程。将解析分析与数值计算结合 ,对回旋速调管放大器高频腔体进行了数值计算 ,研究了吸收层对波导传播、衰减特性及谐振腔的谐振特性、损耗特性、Q值、场分布的影响。给出了数值模拟主要结果。
The field matching equations for the dispersion equation of the waveguide containing the absorption medium and the mixed mode of the high-frequency cavity with the mutation structure are deduced by the method of zoning field and boundary field matching. Combining analytical and numerical calculations, the high frequency cavity of the gyrotron klystron amplifier is numerically calculated. The influence of the absorption layer on the propagation and attenuation characteristics of the waveguide and the resonance, loss characteristics, Q value and field distribution of the resonant cavity are studied. . The main results of numerical simulation are given.