红外与毫米波学报2020，Vol.39Issue(5)：547-552,6.DOI:10.11972/j.issn.1001-9014.2020.05.003
双共焦波导回旋行波管高频结构的电磁特性研究
Detailed investigations on double confocal waveguide for a gyro-TWT
摘要
Abstract
The electromagnetic characteristics of the double confocal waveguide for a gyro-TWT is investigated indetails. The eigenvalue and the field distribution of two kinds of steady-state modes in a double confocal wave-guide,namely the superposition mode and the ring mode,are calculated with the scalar formulation of Huygens' Principle,the theoretical results agree well with those from the commercial CST software. When the anti-phase superposition mode TE06 mode is chosen as an operating mode in a gyro-TWT,the diffractive loss of the potential parasitic modes is far greater than that of the operating mode. It means that the potential parasitic modes can be suppressed by means of its own diffractive loss in a double confocal waveguide. The mode density in a double confocal waveguide is higher than that in a single confocal waveguide,but far lower than that in a cylindrical waveguide. Compared to the single confocal waveguide,a higher beam-wave interaction efficiency can be ob-tained in the double confocal waveguide for a gyro-TWT,it is an appropriate choice to choose a double confocal waveguide as the beam-wave interaction structure in a gyro-TWT.关键词
双共焦波导/回旋行波管/太赫兹/叠加模/环形模Key words
double confocal waveguide/gyro-TWT/Terahertz/superposition mode/ring mode分类
信息技术与安全科学引用本文复制引用
张晨,周俊,钟任斌,赵陶,龚森,刘盛纲,王维,宋韬,黄杰,曹毅超,刘頔威,胡旻,张开春,吴振华..双共焦波导回旋行波管高频结构的电磁特性研究[J].红外与毫米波学报,2020,39(5):547-552,6.基金项目
Supported in part by the National Key Research and Development Program of China under Grant 2017YFA0701000,in part by the Natu-ral Science Foundation of China(61988102)and the Fundamental Research Funds for the Central Universities under(A03018023601003). （61988102）
