周期介质加载大轨道回旋行波管研究  

Research on large⁃orbit gyro⁃TWT with periodic dielectric loading

作　　者：杨锦涛 王峨锋 雷朝军 赵其祥 雷子涵 高东硕 曾旭 冯进军 YANG Jintao;WANG Efeng;LEI Chaojun;ZHAO Qixiang;LEI Zihan;GAO Dongshuo;ZENG Xu;FENG Jinjun(Beijing Vacuum Electronics Research Institute,Beijing 100020,China;China People’s Police University,Langfang 065000,China;Guilin University of Electronic Technology,Guilin 541004,China)

机构地区：[1]北京电真空技术研究所,北京100020 [2]中国人民警察大学,河北廊坊065000 [3]桂林电子科技大学,广西桂林541004

出　　处：《现代电子技术》2024年第8期55-60,共6页Modern Electronics Technique

摘　　要：通过耦合系数、模式竞争和起振条件分析谐波状态下采用大回旋电子注周期性介质加载结构的注波互作用特点,并通过理论分析和PIC粒子模拟,优化设计出一支Ka波段大回旋电子注回旋行波管。该回旋行波管处于二次谐波工作状态,互作用结构采用周期性介质加载结构,结构简单,工艺成熟。仿真结果表明,在电子注为75 kV、电流为9 A、磁场强度仅为0.51 T的工作条件下,所设计的回旋行波管最大输出功率达到了156 kW,3 dB带宽为4.4 GHz,最大增益为47.18 dB,磁场用常规电磁线圈磁体产生即可达到要求。The beam wave interaction characteristics of periodic medium loaded structures using large cyclotron electron beams under harmonic states are analyzed by means of the coupling coefficients,mode competition,and oscillation conditions.A Ka band large large-orbit gyro-TWT(traveling wave tube)is optimized and designed by means of theoretical analysis and PIC particle simulation.The gyro-TWT is in the second harmonic working state,and a periodic dielectric loading structure is applied in the interaction structure,which is simple and mature in technology.The simulation results show that under the working conditions of an electron beam of 75 kV,a current of 9 A,and a magnetic field intensity of only 0.51 T,the designed gyro-TWT has a maximum output power of 156 kW,a 3 dB bandwidth of 4.4 GHz,and a maximum gain of 47.18 dB.The magnetic field can be generated using conventional electromagnetic coil magnets to meet the requirements.

关 键 词：回旋行波管 大回旋电子注 KA波段 二次谐波 周期性介质加载 高频结构 竞争模式 

分 类 号：TN124-34[电子电信—物理电子学]