太赫兹宽带Denisov型准光模式变换器的设计分析  

Design and analysis of a broadband quasi-optical mode converter with a Denisov launcher

作　　者：边慧琦 杜朝海[2] 潘石 刘濮鲲[2] BIAN Hui-Qi;DU Chao-Hai;PAN Shi;LIU Pu-Kun(Beijing Institution of Radio Measurement,Beijing 100854,China;School of Electronics Engineering and Computer Science,Peking University,Beijing 100871,China)

机构地区：[1]北京无线电测量研究所,北京100854 [2]北京大学电子学系区域光纤通信网与新型光通信系统国家重点实验室,北京100871

出　　处：《红外与毫米波学报》2020年第5期567-575,共9页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金(61531002);"NSAF"联合基金(U1830201);中英人才基金(61861130367);英国皇家学会牛顿高级学者基金(NAF/R1/180121).

摘　　要：研究并设计了一种具有宽频带工作能力的太赫兹准光模式变换器。该准光模式变换器采用具有高效率特性的Denisov辐射器,工作在TE6,2模式,用于实现回旋管内的模式变换。由于Denisov辐射器的参数是影响准光模式变换器宽带性能的主要因素,因此通过对辐射器参数的优化设计,达到增大模式变换器带宽的效果。使用自主开发的准光学模拟程序进行仿真,模式变换器中心频率为94 GHz,带宽达2 GHz。A terahertz quasi-optical mode converter with wide bandwidth was studied and designed.The quasi-optical mode converter used Denisov launcher,which had high efficiency,and worked in TE6,2 mode.It was used to realize mode conversion in gyrotron.As the parameters of Denisov launcher were the main factors affecting the broadband performance of quasi-optical mode converter,the optimal design of the radiator parameters could increase the bandwidth of the mode converter.Using the self-developed quasi-optical simulation program for simulation,the bandwidth of the mode converter can reach 2 GHz(center frequency 94 GHz).

关 键 词：太赫兹 准光 模式变换 宽带 

分 类 号：TN12[电子电信—物理电子学] O441.4[理学—电磁学]