折叠波导行波管切断匹配的设计  

Design of sever for folded waveguide traveling wave tubes

作　　者：巩华荣[1] 宫玉彬[1] 唐涛[1] 徐进[1] 王文祥[1] 

机构地区：[1]电子科技大学物理电子学院,大功率微波电真空器件技术重点实验室,成都610054

出　　处：《强激光与粒子束》2011年第2期445-448,共4页High Power Laser and Particle Beams

基　　金：大功率微波电真空器件技术重点实验室基金项目;教育部博士点(新教师)基金项目(20070614041);国家自然科学基金青年科学基金项目(60901021)

摘　　要：利用电磁模拟软件,计算得到了H面渐变与E面渐变的楔形衰减器匹配效果,指出在相同渐变长度下,E面渐变匹配效果优于H面渐变。H面渐变衰减器反射主要来源于电场集中处,而E面渐变衰减器主要来源于渐变前部尖端处。在此基础上设计出了一种变形的匹配衰减器,即在E面渐变衰减器渐变开始处向前延伸一块薄片。计算结果与测试结果表明:与H面渐变和E面渐变的楔形衰减器相比,所设计衰减器在近截止频率处的匹配效果得到了明显的改善。H-plane and E-plane tapered wedge-shaped severs were designed and analyzed by electromagnetic simulation software.The result shows that the matching of the E-plane tapered wedge-shaped sever is better,and the reflected electromagnetic wave mostly results from the place of the centralized electric field,i.e.the sharp end of the wedge-shape for both kinds of severs.A deformed sever is designed based on the E-plane tapered severed.The simulation and experiment results show that,the matching of the deformed sever is much better than that of the H-plane and E-plane tapered wedge-shaped severs near the cut-off frequency.

关 键 词：行波管 折叠波导 切断 匹配 电压驻波比 

分 类 号：TN124.2[电子电信—物理电子学]