The regulation about the radivs of the circular waveguide,curvature of bent circular waveguides,frequency and the bandwidth is obtained.

• 采用不同的相位重匹配方法和选择相应的结构 ；对TM0 1 TE11模式变换器进行了优化分析 ；得出了圆波导半径、弯曲圆波导曲率和频率以及频带宽度之间的变化规律 .