组合型TM01-TE11弯形圆波导模式转换器研究
Study on a combined TM01-TE11 mode converter of bent circular waveguides
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摘要: 研究了组合型TM01-TE11弯形圆波导模式转换器（两弯曲段中间加一段直圆波导），在保持其输出与输入端口轴线平行的前提下，分别从理论推导、数值计算、软件模拟三个方面对此结构进行了分析，模拟结果与数值计算结果吻合得很好。结果表明：计及功率损耗，频率为3.75 GHz，铜波导内径为9.0 cm，轴向间距为10.57 m时，模式转换器总的功率转换效率为93.8%。Abstract: This paper studies the combined TM01-TE11 mode converter, which consists of two bent circular waveguides with a straight circular waveguide between them. Keeping the axes parallel of both the output and the input ports, its structure is analyzed and power conversion efficiency is calculated by theory and simulation. The results from both methods are in good agreement. Considering of higher-order modes coupling and the power attenuation of the straight circular copper waveguide, the output value of the overall power conversion efficiency is 93.8% at 3.75 GHz when the inner diameter is 9.0 cm and the axial distance between the two ports is up to 10.57 m.
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