摘要
本文研究了一种新型的慢波结构——双注折叠波导。工作于太赫兹波段时,电子注通道的大小对色散影响很大,尤其是对双电子注通道的折叠波导。采用简化模型,将波导弯曲部分等效为直波导,考虑电子注通道的影响。运用弗洛奎定理和场匹配分析方法,推导出双电子注折叠波导场方程组的表达式,进而求得色散曲线。
In this paper,a novel two-beam folded waveguide(FW) is investigated.At the terahertz frequency band,the beam tunnel has a big effect on the dispersion of the FW,especially for the FW with two beam tunnels.Simplified model is adopted,which equivalents the circular bends as straight waveguide and considers the effect of the beam tunnels.Floquet theory and field-matching analysis are applied to derive the expressions of field equations for the two-beam FW.Finally,the dispersion curve can be obtained from the equations.
出处
《微波学报》
CSCD
北大核心
2015年第S2期5-7,共3页
Journal of Microwaves
基金
国家自然科学基金:10905032,11275004
中国科学院知识创新重要方向性项目:YYYJ-1123-5
中国科学院知识创新面上项目:CXJJ-11-M33
国家高技术研究计划项目:2012AA8122007A
关键词
折叠波导
双电子注
色散
场匹配分析
folded waveguide
two-beam
dispersion
field-matching analysis
