Propagation of electromagnetic wave in a lossy cylindrical waveguide

被引：6
|
作者：
Jiao Chong-Qing [1 ]
Luo Ji-Run
机构：
[1] Chinese Acad Sci, Inst Elect, Beijing 100080, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
来源：
ACTA PHYSICA SINICA | 2006年 / 55卷 / 12期
关键词：
lossy cylindrical waveguide; phase constant; attenuation constant; dispersion equation;
D O I：
10.7498/aps.55.6360
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Based on the dispersion equation of electromagnetic mode, the propagation characteristics in a lossy cylindrical waveguide are studied. The analytic formula of propagation constant for all modes in the waveguide is presented, which includes the effects of the thickness of the lossy layer. A large uumber of numerical calculations using the analytic formula and the dispersion equation have been carried out on the relations of the attenuation and phase constant with wave frequency, thickness and conductivity of the lossy layer. The analytic calculation results are in good agreement with those of the dispersion equation. This research is useful for selecting appropriate distributed wall losses for the stable and wide-band operation of gyrotron traveling wave amplifiers.
引用
收藏
页码：6360 / 6367
页数：8
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