W波段阶梯型交错双栅慢波结构行波管的研究  

Research on W band step-type staggered double vane slow wave structure traveling wave tube

作　　者：王海龙[1,2] 石先宝[3] 王战亮 宫玉彬[1] WANG Hai-Long;SHI Xian-Bao;WANG Zhan-Liang;GONG Yu-Bin(School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu610054,China;The 29^th institute of CETC,Chengdu610000,China;The 41^th institute of CETC,Qingdao266555,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]中国电子科技集团公司第二十九研究所,四川成都610000 [3]中国电子科技集团公司第四十一研究所,山东青岛266555

出　　处：《红外与毫米波学报》2018年第6期784-789,共6页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金(61531010)~~

摘　　要：为了提高传统交错双栅慢波结构行波管的性能,提出了一种阶梯型交错双栅慢波结构,并基于此新型慢波结构,提出了新型输入输出耦合结构.在此基础上,设计了一只工作在W波段的带状电子注阶梯型交错双栅慢波结构行波管.计算结果显示,阶梯型交错双栅慢波结构行波管的耦合阻抗更高,从而使行波管在更短的互作用电路长度里,实现更高的饱和增益和互作用效率.在90～100GHz频率范围内,阶梯型交错双栅慢波结构的耦合阻抗大于4Ω,高于传统交错双栅慢波结构;W波段带状电子注行波管高频结构的反射系数(S11)小于-15dB;并且行波管的饱和输入功率仅约为0.7W,可以实现最高输出功率约800W,相应的效率大于7.8%,增益大于30.6dB.In order to improve the performance of traditional staggered double vane(SDV)traveling wave tube(TWT),a new kind of step-type staggered double vane(SSDV)slow wave structure(SWS)is proposed,and a new type of input/output coupling structure is designed based on this novel SWS.Moreover,a W band sheet electron beam SSDV SWS TWT is designed in this work.The calculation results show that the SSDV SWS TWT has a higher interaction impedance,so that it can achieve a higher saturated gain and higher interaction efficiency in a less interaction circuit length.In the frequency range of 90~100 GHz,the interaction impedance of SSDV SWS is greater than 4Ω,which is higher than the traditional SDV SWS.The reflect ratio(S11)of high frequency structure of W band sheet electron beam TWT is less than-15 dB.Moreover,the saturated input power of the traveling wave tube is only about 0.7 W,and the maximum output power can be about 800 W,the corresponding efficiency is more than 7.8%,and the gain is more than 30.6 dB.

关 键 词：阶梯型交错双栅慢波结构 带状电子注行波管 低饱和输入功率 高饱和增益 

分 类 号：O46[理学—电子物理学]