新型半矩形环螺旋线慢波结构高频特性  

High-frequency characteristics of half rectangular ring helix slow wave structure

作　　者：夏伟 魏望和[1] 魏彦玉[2] 卢敏[1] Xia Wei;Wei Wanghe;Wei Yanyu;Lu Min(School of Science,Jiangxi University of Science and Technology,Ganzhou 341000,China;School of Electronic Science and Engineering,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]江西理工大学理学院,江西赣州341000 [2]电子科技大学电子科学与工程学院,成都610054

出　　处：《强激光与粒子束》2020年第4期84-88,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(61761022);江西省教育厅科技项目(GJJ160622)

摘　　要：针对行波管更高工作频率和更大输出功率的发展需要,提出了一种半矩形环螺旋线慢波结构。基于三维电磁仿真软件HFSS的模拟研究表明:调控慢波结构的尺寸可以获得合适的色散特性和互作用阻抗,与现有技术的半圆环螺旋线慢波结构相比较,半矩形环螺旋线慢波结构的色散变化很小,但是具有更高的互作用阻抗值。新结构具有平坦色散、高互作用阻抗、与微细加工技术相兼容以及方便与带状电子束互作用的综合优点。A novel half rectangular-ring helix slow-wave structure(SWS) is proposed for the design of wide bandwidth and high power traveling-wave tubes. The numerical calculation by 3 D electromagnetic simulation software HFSS shows that proper dispersion and coupling impedance can be obtained by reasonably setting the geometrical parameters of the SWS. Meanwhile, compared with the half circular ring helix slow wave structure, slight variation in dispersion and remarkable improvement in coupling impedance have been observed in the numerical calculation of the half rectangular ring helix SWS. The half rectangular-ring helix slow-wave structure has the combined advantages of flatten dispersion, high interaction impedance, easy fabrication and convenience for interaction with sheet beam.

关 键 词：半矩形环螺旋线慢波结构 微细加工技术 带状电子束 色散特性 互作用阻抗 

分 类 号：TN124[电子电信—物理电子学]