First, we use variation method and Bessel function orthogonality to deduce the dispersion function of the slow-wave structure under the condition of neglecting the thickness of disk.

• 首先完善了忽略膜片厚度时同轴交错膜片加载慢波线的理论分析,采用变分法和贝塞尔函数的正交性导出其色散方程,并对理论结果进行了数值计算。