采用光子晶体的行波管慢波结构高频特性研究  

Application of Photonic Crystal in Traveling-Wave-Tube Slow Wave Structures and Its High Frequency Characteristics

作　　者：徐捷[1] 

机构地区：[1]电子科技大学物理电子学院,成都610054

出　　处：《真空科学与技术学报》2011年第6期721-727,共7页Chinese Journal of Vacuum Science and Technology

摘　　要：提出了一种采用光子晶体作为行波管慢波结构屏蔽筒的新方案,论证了方案的可行性,并进行了模式分析。在充分研究光子晶体禁带特性的基础上,计算了光子晶体慢波结构的色散特性和耦合阻抗,对计算结果的分析表明,光子晶体在行波管慢波结构中起到了定向选模的作用,为行波管实现高次模式工作奠定了基础。Here,we addressed the feasibility of fabricating the shielding tube with 2-dimentional photonic crystal material for the traveling wave tube（TWT） slow wave structure（SWS）.The operation mode of the SWS was analyzed.The dispersion characteristics and the coupling impedance of the SWS,made of photonic crystal,were evaluated,based on the band structure analysis,particularly the forbidden-gap properties,of the photonic crystal.The calculated results show that the photonic crystal plays an important part in oriented mode selection.We suggest that the application of the 2-D photonic crystal in making TWT-SWS may make it possible for the TWT to work in high-order mode.

关 键 词：光子晶体 带结构 慢波电路 行波管 工作模式 

分 类 号：TN124[电子电信—物理电子学]