2~18 GHz超宽带行波管慢波结构及互作用研究  

Study on slow wave structure and interaction of 2−18 GHz ultra-wide band traveling-wave tube

作　　者：吕俊 郝保良 寇建勇[1] 崔建玲[1] 周忠正 Lü Jun;Hao Baoliang;Kou Jianyong;Cui Jianling;Zhou Zhongzheng(The 12th Research Institute of China Electronics Technology Group Corporation,Beijing 100020,China)

机构地区：[1]中国电子科技集团公司第十二研究所,北京100020

出　　处：《强激光与粒子束》2021年第11期136-144,共9页High Power Laser and Particle Beams

摘　　要：为满足现代信息化战争对超宽带行波管的需求,对2~18 GHz超宽带行波管的高频慢波结构进行了研究分析。在传统宽带行波管的基础上引入非翼片加载段的正常色散特性,首次实现2~18 GHz超宽带高频慢波结构设计,最大带宽达到9∶1。同时输出端螺旋线螺距调整为正渐变分布,能够进一步优化低频段二次谐波抑制比,提高高频段饱和输出功率。结果表明,全频带的基波输出功率达到100 W,二次谐波抑制比优于−3 dBc,2 GHz频点二次谐波抑制比优于−5 dBc,为超宽带大功率器件的设计提供了理论基础。The high-frequency slow-wave structure of 2−18 GHz ultra-wideband traveling-wave tube(TWT)is studied and analyzed to meet the requirements of modern information warfare for TWT.Based on the traditional wideband TWT,the positive dispersion characteristics of non-fin loading section were introduced to realize the 2−18 GHz ultra-wideband high-frequency slow wave structure,with the maximum bandwidth of 9∶1.Results show that the output power of fundamental wave is up to 100 W,the second harmonic suppression ratio is better than−3 dBc in the full frequency band,and the second harmonic suppression ratio is better than−5 dBc at 2 GHz,which provides a theoretical basis for the design of ultra-wideband high-power devices.At the same time,the spiral pitch at the output end is adjusted to a positive gradient distribution to further optimize the low frequency secondary wave suppression ratio and improve the saturation output power of the high frequency band.

关 键 词：超宽带 正常色散 反常色散 螺旋线 行波管 

分 类 号：TN124[电子电信—物理电子学]