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
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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,本文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90GHz~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 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 GHz ~ 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 -15dB. Moreover, the saturated input power of the traveling wave tube is only about 0.7W, and the maximum output power can be about 800W, the corresponding efficiency is more than 7.8%, and the gain is more than 30.6dB.
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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