170GHz回旋管准光模式变换器的设计  

Design of a quasi-optical mode converter for a 170GHz gyrotron

作　　者：徐寿喜 杨杰 王虎 耿志辉 张瑞 XU Shou-Xi;YANG Jie;WANG Hu;GENG Zhi-Hui;ZHANG Rui(Key Laboratory of High Power Microwave Sources and Technologies,Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 101400,China;University of Chinese Academy of Sciences,Beijing 100049,China;Hisense Mobile Communication Technology Co.,Ltd.Qingdao 266555,China)

机构地区：[1]中国科学院空天信息创新研究院高功率微波源与技术国防重点实验室,北京100140 [2]中国科学院大学,北京100049 [3]海信移动通信技术有限公司,山东青岛266555

出　　处：《红外与毫米波学报》2022年第3期557-562,共6页Journal of Infrared and Millimeter Waves

基　　金：Supported by the National Natural Science Foundation of China(61571418,61531002)。

摘　　要：针对170 GHz回旋管研究,设计了一种高效Denisov准光模式变换器,该回旋管工作在TE_(31,8)模式。模式变换器由微扰结构的辐射器和镜面系统组成。基于耦合模理论和矢量绕射理论,研究了两级微扰辐射器,优化设计了镜面系统。仿真结果显示,TE_(31,8)模式转换为高斯光束,其输出功率转换效率为93.7%。A high efficiency Denisov-type quasi-optical mode converter for a 170 GHzTE_(31,8)mode gyrotron is presented.The mode converter comprises a dimpled-wall launcher and a mirror system.Based on the coupled mode theory,the advanced launcher having two stages of perturbations is investigated.A mirror system of the converter is optimized and designed by using the vector diffraction theory.Simulation results show that the good Gaussian mode is converted from the circular waveguideTE_(31,8)mode and the mode conversion efficiency of a quasi-optical mode converter is 93.7%.

关 键 词：准光模式变换器 Denisov辐射器 回旋管 

分 类 号：TN12[电子电信—物理电子学]