螺旋带径向厚度对色散和耦合阻抗的影响  

Effect of the Radial Thickness of Helix on Dispersion and Coupling Impedance in TWT's

作　　者：樊会明[1,2] 肖刘[1,2] 韩博[1,2] 苏小保[1] 

机构地区：[1]中国科学院电子学研究所 [2]中国科学院研究生院北京100039

出　　处：《电子与信息学报》2007年第2期492-495,共4页Journal of Electronics & Information Technology

摘　　要：该文将有限厚度的实际螺旋带等效为存在无限薄螺旋带的等厚真空层,从场分析和软件模拟两个方面研究了等效慢波结构的色散特性和耦合阻抗。将理论计算、软件模拟和实验测试结果进行了比较,结果表明,用真空层等效有限厚度的实际螺旋带时,将无限薄螺旋带置于等厚真空层的中央,其螺旋慢波结构的色散特性和耦合阻抗的理论计算、软件模拟和实验测试结果三者取得了很好的一致。In this paper, the finite radial thickness tape helix is replaced by the same thickness vacuum layer laid in an infinite thin tape helix. The effect of position of the infinite thin helix on the dispersion and coupling impedance is studied by field analysis and computer simulation. The computed and simulated results are compared to those measured. As a result, if the infinite thin helix lay in the middle of the vacuum, the three results of dispersion and coupling impedance are good agreements when laying an infinite thin tape helix in the middle of the same thickness vacuum layer.

关 键 词：行波管螺旋带 慢波结构 色散特性 耦合阻抗 

分 类 号：TN124[电子电信—物理电子学]