Abstract:The field in helix TWT (Traveling Wave Tube) is studied with numerical analysis. By Numerical field analysis, neglected in the theory’s, the phenomenon is that, the master and slave face setting decides the wave propagation direction, and the helix rotation decides the field’s rotation. Also, the cross-section distribution infection in helix with different rods and vanes outsides of helix are also studied. The field cross-section distribution changes very small, almost with the Bessel function. But the impedance changes much because of the electromagnetic energy re-distribution in rods or vanes. On the other hand, accurate spatial harmonious impedance can be obtained by the spatial harmonious field numerical analysis, especially the mostly used spatial harmonious wave, the 0 and -1 spatial harmonious wave. Above this, the accuracy of the forward and backward beam-wave interaction can be improved.
胡玉禄; 杨中海; 李 斌; 李建清; 黄 桃; 金晓林; 梁献普. 螺旋线行波管中场的数值分析[J]. 电子与信息学报, 2010, 32(7): 1721-1725 .
Hu Yu-lu; Yang Zhong-hai; Li Bin; Li Jian-qing; Huang Tao; Jin Xiao-lin; Liang Xian-pu. Numerical Analysis of the Field in Helix Traveling Wave Tube. , 2010, 32(7): 1721-1725 .