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在耦合波理论的基础上,对圆波导轴线弯曲结构的TE01-TM11模式变换器进行了理论分析。同时使用MATLAB编制了迭代法的计算程序,并进行了大量的数值计算和优化,设计出了一种新型的90°弯曲圆波导TE01-TM11模式变换器,并给出该TE01-TM11模式变换器的最优化结构轮廓。数值计算表明该模式变换器的最高转换效率达到99.55%,转换效率大于95%的带宽超过29%。最后,利用CST仿真软件对该模式变换器进行了仿真验证,仿真结果与数值计算结果一致性较好。
Based on the coupled wave theory, the theoretical analysis of TE01-TM11 mode converter with circular waveguide axis bending structure is carried out. At the same time, the program of iteration method was compiled by using MATLAB, and a great deal of numerical calculation and optimization were done. A new type of TE01-TM11 mode converter with 90 ° bending circular waveguide was designed and the TE01-TM11 mode converter The optimal structure of the outline. Numerical calculation shows that the maximum conversion efficiency of this model converter reaches 99.55% and the conversion efficiency of more than 95% exceeds 29%. Finally, the model converter is verified by CST simulation software. The simulation results are in good agreement with the numerical results.