W波段阶梯型交错双栅慢波结构行波管的研究
投稿时间:2018-06-09  修订日期:2018-07-01  点此下载全文
引用本文:王海龙,石先宝,王战亮,宫玉彬.W波段阶梯型交错双栅慢波结构行波管的研究[J].红外与毫米波学报,2018,37(6):784~789].WANG Hai-Long,SHI Xian-Bao,WANG Zhan-Liang,GONG Yu-Bin.Research on W band step-type staggered double vane slow wave structure traveling wave tube[J].J.Infrared Millim.Waves,2018,37(6):784~789.]
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作者单位E-mail
王海龙 电子科技大学 电子科学与工程学院 aichengdu123@163.com 
石先宝 中国电子科技集团公司第四十一研究所  
王战亮 电子科技大学 电子科学与工程学院  
宫玉彬 电子科技大学 电子科学与工程学院 ybgong@uestc.edu.cn 
基金项目:国家自然科学基金(61531010)
中文摘要: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.
中文关键词: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
 
Research on W band step-type staggered double vane slow wave structure traveling wave tube
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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