广西科技大学学报2025，Vol.36Issue(6)：26-32,7.DOI:10.16375/j.cnki.cn45-1395/t.2025.06.004
W波段折叠波导行波管过渡波导结构的设计与分析
Design and analysis of transition waveguide structures in W-band folded-waveguide traveling-wave tubes
摘要
Abstract
With the rapid development of radar and communication technology,the demand for folded waveguide traveling wave tubes with W-band and above frequencies is increasing day by day.In these traveling wave tubes,the transition waveguide serves as a key coupling structure between the folded waveguide traveling wave tube and the external circuit,and its design is crucial to the overall performance of the traveling wave tube.In this article,three types of transition waveguides were designed to smoothly transition a folded waveguide with dimensions of 1.90 mm×0.30 mm to a WR-10 standard waveguide(dimensions of 2.54 mm×1.27 mm).Using CST simulation software,three types of transition waveguide structures were compared.The focus of the research is to analyze how these structural and length parameters affect the voltage reflection coefficient(S11)and voltage standing wave ratio(VSWR),in order to optimize the performance of the transition waveguide.The results show that in the frequency range of 80.0 GHz to 110.0 GHz,for the central axis symmetric straight tapered transition waveguide and the plane symmetric straight tapered transition waveguide,the longer the transition waveguide length,the lower the VSWR and S11 at the same frequency,the better the impedance matching,and the higher the system efficiency.However,the performance of the four-step transition waveguide of S11 and VSWR is not like that of the previous two.There is even a situation where the values of VSWR and S11 in a larger range are lower than those when the transition waveguide length is longer when the transition waveguide length is the shortest,and there is no situation where both VSWR and S11 decrease as the length of the transition waveguide increases.In summary,this paper provides an important reference for the design of high-performance folded waveguide traveling wave tubes through the in-depth design and analysis of the W-band folded waveguide traveling wave tube transition waveguide structure,which is helpful to promote the further development of radar and communication technology.关键词
W波段/行波管过渡波导/矩形波导/传输特性/电压驻波比(VSWR)/S参数Key words
W-band/traveling wave tube transition waveguide/rectangular waveguide/transmission characteristics/voltage standing wave ratio(VSWR)/S parameter分类
信息技术与安全科学引用本文复制引用
马晓光,李勇滔,李含雁,王荷..W波段折叠波导行波管过渡波导结构的设计与分析[J].广西科技大学学报,2025,36(6):26-32,7.基金项目
国家自然科学基金项目(62041402,61474139)资助 （62041402,61474139）
