W波段低电压宽带过模矩形同轴曲折波导行波管的研究  

Investigation of low-voltage broadband overmoded folded rectangular coaxial waveguide TWT at W-band

作　　者：许多[1] 王少萌 邵伟[1] 何腾龙 王禾欣 唐涛[1] 巩华荣[1] 路志刚[1] 王战亮[1] 段兆云[1] 魏彦玉[1] 冯进军[3] 宫玉彬[1] XU Duo;WANG Shao-Meng;SHAO Wei;HE Teng-Long;WANG He-Xin;TANG Tao;GONG Hua-Rong;LU Zhi-Gang;WANG Zhan-Liang;DUAN Zhao-Yun;WEI Yan-Yu;FENG Jin-Jun;GONG Yu-Bin(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China;Satellite Research Centre,Nanyang Technological University,Singapore 639798;Beijing Vacuum Electronics Research Institute,Beijing 100015,China)

机构地区：[1]电子科技大学电子科学与工程学院,四川成都610054 [2]南洋理工大学卫星研究中心,新加坡639798 [3]北京真空电子技术研究所,北京100015

出　　处：《红外与毫米波学报》2020年第4期422-429,共8页Journal of Infrared and Millimeter Waves

基　　金：Supported by National Natural Science Foundation of China(61531010,61921002);the International Cooperating Project of Sichuan Province(2018HH0132);the National Key Lab Foundation of China(9140A23010415DZ02001)。

摘　　要：提出了一种具有高频率、宽频带和低电压特点的矩形同轴曲折波导慢波结构,所提出的矩形同轴曲折波导工作于过模状态,工作频率较高,同时具有不错的传输特性。设计了一种宽带的双脊加载的波导-同轴转换器,其带宽可以覆盖矩形同轴曲折波导行波管的整个工作频带。所设计的矩形同轴曲折波导行波管工作电压和电流分别为3230 V和150 mA,慢波结构长度为32 mm,PIC仿真结果表明,在76~110 GHz频率范围内,其输出功率超过13.7 W,在108GHz频点,输出功率达到最大值,约为27.4 W,对应的射频效率为5.65%。To develop high frequency,broad bandwidth and low voltage traveling wave tube(TWT),the folded rectangular coaxial waveguide slow wave structure(FRCW-SWS)is proposed in this paper.Operating at over⁃moded condition,the proposed FRCW-SWS has relatively high operating frequency and acceptable transmission characteristics.A double ridge-loaded waveguide-to-coaxial-waveguide converter is designed and applied as the input/output coupler to incorporate the broadband characteristics of the FRCW-SWS.The hot performance of this overmoded FRCW-TWT at W-band is investigated using particle-in-cell(PIC)simulation.The simulation results indicate that the output power can be over 13.7 W in the frequency range of 76~110 GHz,when the length of the SWS,the beam voltage and beam current are 32 mm,3230 V and 150mA,respectively.The maximal output power is about 27.4 W at the frequency of 108 GHz,corresponding to the RF efficiency of 5.65%.

关 键 词：过模行波管 平面慢波结构 宽带放大器 同轴曲折波导 

分 类 号：TN124[电子电信—物理电子学]