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从共焦波导的电磁场分布出发,得到共焦波导的色散方程和衍射损耗方程。使用数值分析软件MATLAB对W波段共焦波导回旋行波管高频结构的色散特性和衍射损耗进行理论计算,并且绘制了色散曲线和衍射损耗曲线。利用HFSS电磁仿真软件,采用本征模的求解方法,把主从边界条件应用在共焦波导结构上,对其色散特性进行仿真计算,使用场求解器,仿真计算其衍射损耗率。理论计算和仿真结果相互吻合。
Starting from the electromagnetic field distribution of the confocal waveguide, the dispersion equation and the diffraction loss equation of the confocal waveguide are obtained. Using the numerical analysis software MATLAB, the dispersion characteristics and diffraction loss of high frequency structure of W-band confocal waveguide gyroscope were theoretically calculated, and the dispersion curves and diffraction loss curves were plotted. The HFSS electromagnetic simulation software and the eigenmode solving method are used to apply the principal and subordinate boundary conditions to the confocal waveguide structure. The dispersion characteristics of the confocal waveguide structure are simulated. The field solver is used to calculate the diffraction loss rate. The theoretical calculation and simulation results are consistent with each other.