L波段大功率全带宽波导盒型窗  

High power full band waveguide pill-box window

作　　者：汪海洋[1] 李家胤[1] 李明光[1] 于秀云[1] 

机构地区：[1]电子科技大学物理电子学院国家强辐射实验室,成都610054

出　　处：《强激光与粒子束》2008年第11期1887-1891,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(60501013)

摘　　要：由于鬼模振荡的存在,普通波导盒型窗很难获得宽频带输出,其相对带宽一般只有20%-30%。提出一种新的适用于大功率螺旋线行波管非对称全带宽波导盒型窗设计思路,通过3维电磁仿真设计与优化,获得了L波段相对带宽达41.4%盒型窗结构设计参数,且频带内无鬼模振荡,考虑匹配过渡段后整个盒型窗驻波系数模拟计算小于1.1。采用此功率输出结构研制的S波段大功率行波管连续波输出功率达3kW以上,整管实测驻波系数小于1.6。A general waveguide pill-box window could provide maxim relative bandwidth no more than 30% because of the ghost mode effects. A new full band waveguide high power asymmetric pill-box window without ghost mode simulation and optimized approach is presented. This type pill-box window has broad band, no ghost mode and excellent voltage standing wave ratio （VSWR） characters and specially suits for high power helix TWT with kW level output. An L-band pill-box window 3-D simulation prototype connected with impedance match waveguide is obtained according to this method, which has a relative bandwidth up to 41.4% without ghost mode and the VSWR is lower than 1.1

关 键 词：高功率微波 行波管 全波导带宽 盒型窗 仿真设计 鬼模 

分 类 号：TN814[电子电信—信息与通信工程]