Abstract In this paper, an all-metal sectoral waveguide (SWG) mode converter has been proposed for TM01 to TE11 mode conversion, suitable for high-power application with high mode conversion efficiency and beam stability. Describing its operating principle, electromagnetic (EM) analysis has been carried out to observe the propagation behaviour in the different structure regions of the mode converter. A comprehensive design methodology, experimental investigation along with its beam stability performance has been presented. This design methodology has been typically demonstrated for 2.9–3.1 GHz frequency device; the performance of the designed device has been carried out using a commercial simulation code. To validate our design methodology and simulation, the results have been compared with experimental results and found in agreement. The proposed SWG mode converter has exhibited high conversion efficiency (98.4%) along with EM beam stability, suiting for the high-power applications.

中文翻译：

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扇形波导TM01转TE11模式转换器的实验研究与设计

摘要 本文提出了一种全金属扇形波导 (SWG) 模式转换器，用于 TM01 到 TE11 模式转换，适用于具有高模式转换效率和光束稳定性的大功率应用。在描述其工作原理时，已经进行了电磁 (EM) 分析以观察模式转换器不同结构区域中的传播行为。介绍了一种综合设计方法、实验研究及其光束稳定性性能。这种设计方法通常用于 2.9–3.1 GHz 频率设备；所设计设备的性能已使用商业仿真代码进行。为了验证我们的设计方法和模拟，将结果与实验结果进行了比较并发现一致。