大功率耦合腔行波管两级降压收集极的设计  

Design of Twice-Depressed Collector for High-Power Coupled-Cavity TWT

作　　者：虞炎秋 刘宇荣[2] 周锋[2] 

机构地区：[1]中电熊猫信息产业集团有限公司,南京210010 [2]南京三乐电子信息产业集团有限公司,南京211800

出　　处：《电子工程》2013年第2期1-4,共4页

摘　　要：介绍某大功率耦合腔脉冲行波管两级降压收集极的CAD分析、结构设计及研制结果。首先，使用2．5维互作用程序软件包对行波管输出端96条电子轨迹的半径，轴向、径向速度进行模拟并分析；设计再聚焦段后。再利用该软件包计算经过再聚焦的96条电子轨迹的半径，轴向、径向速度，判断再聚焦段对电子注层流性的改善情况，然后对两级降压收集极进行光学设计、结构设计和热分析；最后进行了装管试验。试验结果表明，所设计的两级降压收集极各电极电流分配比例、收集极效率等参数数值接近于全频带平均实测值。说明上述方法对设计大功率耦合腔脉冲行波管两级降压收集极有较好的指导意义。The CAD analyses, structural designs and developed result of the twice-depressed collector for high power coupled-cavity travelling wave tube are introduced in this paper. First, a 2.5-dimensional interaction program package is used to simulate and analyze axial, radial velocity and radius of 96 electron trajectories in the output potion of travelling wave tube. After refocusing segment is de- signed, the program package is used again to compute axial, radial velocity and radius of the 96 elec- tron trajectories refocused. The improvement of the flow of electron injection layer after electron trajec- tories pass the refocusing segment is judged, and then optical design, structure design and thermal a- nalysis of the collector are done. At last, a travelling wave tube is assembled for the test. It shows that the proportion of the current distribution in every electrode of the collector designed and the collector ef- ficiency, etc, are close to their average values of measurement within the full-band, which means that the analytical methods above have a good guiding significance to the design of twice-depressed collector for high-power coupled-cavity-pulse travelling wave tube.

关 键 词：大功率 耦合腔脉冲行波管 两级降压收集极 96条电子轨迹 收集极效率 

分 类 号：TN124.02[电子电信—物理电子学]