S波段低电压宽带前向波放大管设计研究  

Design of an S-Band Low Voltage Broadband Forward-Wave Amplifier

作　　者：朱程[1] 黎深根[1] 雷雪峰[1] 刁爽 ZHU Cheng;LI Shen-gen;LEI Xue-feng;DIAO Shuang(Beijing Vacuum Electronics Research Institute,Beijing 100015,China)

机构地区：[1]北京真空电子技术研究所,北京100015

出　　处：《真空电子技术》2022年第3期35-41,共7页Vacuum Electronics

摘　　要：前向波放大管是一种低电压、高效率、低噪声、可瞬时启动的正交场放大器,本文介绍了一种S波段低电压宽频带前向波放大管的模拟设计。从慢波结构色散特性、驻波系数、插入损耗等方面讨论了单螺旋耦合翼片慢波结构;定性分析了正交场器件冷启动技术,重点介绍前向波管冷阴极启动性能、阴极材料以及目前技术水平,并讨论了前向波放大管可以低电压工作的主要原因;在理论分析的基础上,建立了S波段前向波放大管仿真模型,通过优化设计了S波段低电压宽频带前向波放大管,在工作电压9.8 kV、工作磁场0.32 T的条件下,当激励功率为3 kW时,阳极脉冲电流小于12.0 A,输出脉冲功率超过60 kW,效率大于50%,增益大于13 dB,相对带宽超过10%。The forward-wave amplifier is a low voltage,high efficiency,low noise and instant startup crossed-field amplifier(CFA).An S-band low voltage broadband forward-wave amplifier is presented.Single helix-coupled vane is discussed in terms of dispersion characteristics,VSWR factor and insertion loss of slow wave structure.The cold-startup technology for crossed-field devices is qualitatively analyzed,the startup performance,cathode material and current technical level of the cold cathode are introduced importantly,and the main reasons for low voltage operating of forward-wave amplifier are also discussed.Based on theoretical analysis,a simulation model is established and an S-band low voltage broadband forward-wave amplifier is optimal designed.With the anode voltage of 9.8 kV and magnetic field of 0.32 T,when the drive power is 3 kW,the anode current is less than 12.0 A,the peak power is over 60 kW,the efficiency is greater than 50%,the gain is greater than 13 dB and the relative bandwidth exceeds 10%.

关 键 词：前向波管 螺旋耦合翼片 冷阴极 前向波 

分 类 号：TN123[电子电信—物理电子学]