大直径波纹内导体同轴慢波结构特性的研究  

Research on the Characters of Large-Diameter Corrugated-Inner-Conductor Coaxial SWS

作　　者：于新华[1] 蒙林[1] 鄢扬[1] 袁家德[2] 蒲友雷[1] 顾小卫[1] 

机构地区：[1]电子科技大学高能电子科技大学物理电子学院,四川成都610054 [2]南京航天航空大学信息与科学技术学院,江苏南京210016

出　　处：《电子学报》2008年第3期566-569,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60571078);大功率微波电真空器件国防重点实验室基金

摘　　要：提出了易以加工的大直径波纹内导体相对论返波振荡器慢波结构,推导了这种慢波结构的冷色散方程和耦合阻抗计算公式,数值计算并详细分析了相关结构参数对TM0n模式色散曲线分离度以及TM02模式的高频场耦合阻抗的影响.结果表明:慢波结构周期、波纹深度以及电子注平均半径都对高频场耦合阻抗有影响;这种慢波结构在抑制模式竞争、以及在低引导磁场下工作等方面都有较大的优势.An easily-manufactured large-diameter slow-wave structure （SWS） with inner sinusoidal corrugated conductor is investigated in this dissertation. The cold dispersion equations of the SWS and the coupled impedance of high-frequency field in the SWS are derived,calculated and discussed in detail under considering the effect of structure parameters involved on the density of TM0n mode dispersion curves and coupled impedance of TM02 mode. The results show that the period, the wave depth and the beam average radius have influences on the impedance, and that the SWS has some unique advantages：It may suppress mode competition and operate under a low axial guide magnetic field.

关 键 词：波纹内导体慢波结构 模式竞争 耦合阻抗 低磁场 

分 类 号：TN128[电子电信—物理电子学]