双槽结构模变换器的研究

Research on Mode Converters with Dual-slot Structure

为了能够有效地分析双槽结构模变换器的传输特性,建立了由一段波纹圆波导连接的2个对称模变换器的分析模型,分析了模变换器的等效导纳特性,并由其等效导纳特性优化选取了其槽深、槽宽,深入研究了入口半径、槽数等因素对模变换器传输性能的影响,总结了各因素对模变换器驻波性能影响的规律,优选了入口半径,给出了该模变换器实现TE11模向HE11模平稳过渡所需要的槽数,结论均可用于指导工程设计。

To get the voltage standing wave ratio of the mode converter with dual-slot structure, a special model, which is a corrugated cylindrical waveguide with two symmetrical mode converters and a corrugated waveguide in the middle of them, is created. The effect of the radius at the input and the total number of dual-slots on the voltage standing wave ratio of the mode converter with dual-slot structure is discussed, and the effects of these factors on the voltage standing wave ratio are given. According to the analysis, the radius at the input and the total number of dual-slots are acquired when the voltage standing wave ratio within the dual band is minimal. This conclusion can be used to guide the engineering design.