6~18GHz百瓦级宽带行波管二次谐波抑制的优化设计  

Optimization Design of Second Harmonic Suppression for 6~18 GHz Hundred-Watt Wideband Traveling-Wave Tubes

作　　者：曹绅 李强斌 周忠正 崔建玲[1] 常田颖 CAO Shen;LI Qiang-bin;ZHOU Zhong-zheng;CUI Jian-ling;CHANG Tian-ying(Beijing Vacuum Electronics Research Institute,Beijing 100015,China;The 29th Research Institute of China Electronics Technology Group Corporation,Chengdu 610036,China)

机构地区：[1]中国电子科技集团公司第十二研究所,北京100015 [2]中国电子科技集团公司第二十九研究所,四川成都610036

出　　处：《真空电子技术》2021年第4期68-71,共4页Vacuum Electronics

摘　　要：本文主要介绍了6~18 GHz百瓦级宽带螺旋线行波管二次谐波抑制的仿真优化设计。利用仿真分析软件,对比分析了螺旋线螺距、螺距跳变等因素对行波管慢波结构高频性能及注-波互作用性能的影响,并通过使用双跳变螺距分布的螺旋线优化了行波管谐波抑制比及效率等参数,将行波管在9 GHz频点处的二次谐波由-7.2提升至-11.3 dBc,且工作频带内二次谐波优于-8.1 dBc。根据仿真分析结果,成功研制出了百瓦级6~18 GHz螺旋线行波管样管,样管的二次谐波在9 GHz频点处为-11.2 dBc,且工作频带内二次谐波优于-7.4 dBc。This article mainly introduces the optimization design of second harmonic suppression of wideband helix traveling-wave tubes(TWTs)within the range of 6~18 GHz.By using simulation analysis software,the influence of helical pitch and pitch jump on high frequency performance and beam-wave interaction performance of the slow wave structure are compared and analyzed.The harmonic suppression ratio and efficiency of the TWT are optimized by using a double-hop variable pitch helix.The optimal result shows that the second harmonic decreases from-7.2 to-11.3 dBc at 9 GHz,and it is better than-8.1 dBc in the whole frequency range.According to the simulation analysis results,a hundred-watt 6~18 GHz helix TWT is successfully developed.The second harmonic of it is-11.2 dBc at 9 GHz,and is better than-7.4 dBc in whole frequency range.

关 键 词：行波管 慢波结构 输出功率 二次谐波 

分 类 号：TN124[电子电信—物理电子学]