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%.
作者
许多
王少萌
邵伟
何腾龙
王禾欣
唐涛
巩华荣
路志刚
王战亮
段兆云
魏彦玉
冯进军
宫玉彬
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)
出处
《红外与毫米波学报》
SCIE
EI
CAS
CSCD
北大核心
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)。
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
overmoded traveling wave tube
planar slow wave structure
broadband amplifier
folded coaxial waveguide
