摘要
针对E波段宽带应用,文中提出了一种适用于宽带行波管的新型慢波结构——椭圆弯曲折叠波导。与传统的折叠波导相比,该设计将原直波导段弯曲的部分改为椭圆结构,并增加了直波导段的倾斜角度,从而更好地实现宽带性能。利用电磁场仿真软件CST分析了该新型慢波结构各参数对相光速比及耦合阻抗的影响,在71 GHz~96 GHz频段范围内,椭圆弯曲折叠波导结构相较于常规折叠波导结构,在只降低了3.8%耦合阻抗的情况下,提升了77%的相光速比差值,大大改善了宽带性能。
For E-band broadband applications,a novel slow-wave structure suitable for broadband traveling wave tubes is proposed:the elliptical bending folded waveguide.Compared to the traditional folded waveguides,this design modifies the original straight waveguide sections into elliptical structures and introduces an inclined angle to the straight waveguide sections,thereby achieving better broadband performance.Using electromagnetic simulation software CST,the effects of various parameters of this new slow-wave structure on the phase velocity ratio and coupling impedance are analyzed.In the frequency range of 71 GHz~96 GHz,the elliptical bent folded waveguide structure,compared to conventional folded waveguide structures,achieves a 77%increase in the difference of phase velocity ratio while only reducing the coupling impedance by 3.8%,significantly improving broadband performance.
作者
王一哲
蔡军
杜英华
张小青
冯进军
WANG Yizhe;CAI Jun;DU Yinghua;ZHANG Xiaoqing;FENG Jinjun(The 12th Research Institute of China Electronics Technology Group Corporation,Beijing 100015,China)
出处
《微波学报》
北大核心
2025年第1期82-86,共5页
Journal of Microwaves
关键词
椭圆弯曲折叠波导
慢波结构
行波管
E波段
elliptic bending folded waveguide
slow wave structure
traveling-wave tube
E-band
