Research on W band step-type staggered double vane slow wave structure traveling wave tube
Received:June 09, 2018  Revised:July 01, 2018  download
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Author NameAffiliationE-mail
WANG Hai-Long School of Electronic Science and Engineering,University of Electronic Science and Technology of China aichengdu123@163.com 
SHI Xian-Bao The 41th institute of CETC,Qingdao  
WANG Zhan-Liang School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu  
GONG Yu-Bin School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu ybgong@uestc.edu.cn 
Abstract:In order to improve the performance of traditional staggered double vane (SDV) traveling wave tube (TWT) , a newkind of step-type staggered double vane (SSDV) slowwave structure (SWS) is proposed, and a newtype 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 showthat 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 4 Ω, 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.
keywords:Step-type staggered double vane slow wave structure, Sheet electron beam traveling wave tube, low saturation input power, high saturation gain
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Copyright:《Journal of Infrared And Millimeter Waves》