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中文摘要：
提出了一种新型的毫米波行波管慢波结构——阶梯加载矩形波导栅慢波系统．考虑槽区内场的高次项，利用各阶梯相邻面的阶跃条件以及互作用区和加载区的场匹配条件，获得了该结构的色散方程，并导出耦合阻抗．讨论了主模在其中的传播情况，并分析了系统结构参数变化对慢波电路高频特性的影响．数值计算表明加载阶梯的尺寸对此结构内波的传播特性有很大影响，可以根据不同的要求来选取具体设计参数．该结果为进一步研究和设计此类行波管高频系统提供了理论基础．
英文摘要：
The step-loaded rectangular waveguide grating slow-wave system, a new type slow-wave structure for mm-millimeter TWT, was presented in this study. And the dispersion equation and coupling impedance of this circuit were obtained by means of the approximate field matching theory, in which the high order terms of the field expansion in the groove region were considered, and the jump conditions at the interface of two neighboring steps and the matching conditions at the interface between the loaded region and the interaction region were employed. The high-frequency characteristics of the fundamental wave were discussed and the influence of various circuit parameters on high-frequency characteristics was also investigated. The results of the numerical calculation show that it is very useful for improving the high-frequency characteristics by loading the steps. The specific design-parameters can be selected according to the different needs. The present analysis will be helpful for further study and design of this kind RF system.
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Dielectric effect on the radio-frequency characteristics of a rectangular waveguide grating travelin
A method of designing photonic crystal grating slow-wave circuit for Ribbon-Beam microwave travellin
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