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本文首次运用螺旋坐标系给出了带状螺旋线缝隙内的电磁场解，并据此计算了带状螺旋慢波结构的色散特性文中采用了严格的边界条件，并以傅立叶展开进行了严格的数学处理．另外还首次对有介质区域内各层的径向传输系数作了区别本文使用这种方法计算了我们已研制的一些宽带高功率行波管所用的慢波线结构的色散特性，理论与实验符合得很好我们还计算了不同结构参数对色散特性的影响，并与实验作了对照，发现本文的理论有一定的普适性
In this paper, the spiral field coordinate system is used for the first time to give the solution of the electromagnetic field in the ribbon spiral gap. Based on this, the dispersion characteristics of the ribbon spiral slow wave structure are calculated. The strict boundary conditions are adopted in this paper. deal with. In addition, for the first time, the radial transfer coefficient of each layer in the medium region is distinguished. In this paper, the dispersion characteristics of the slow-wave line structure used in some broadband high-power traveling wave tubes we have developed are calculated in this paper. The theoretical and experimental results are consistent We also calculated the effect of different structural parameters on dispersion characteristics and compared them with the experiment and found that the theory of this paper has a certain universal