V波段宽杆半矩形环螺旋线行波管的研究  

Investigation on V-Band Wide-Bar Half Rectangular-Ring Helix TWTs

作　　者：钟辉 魏望和[1] 于灿 胡文 ZHONG Hui;WEI Wang-he;YU Can;HU Wen(School of Science,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学理学院,江西赣州341000

出　　处：《真空电子技术》2021年第6期47-51,共5页Vacuum Electronics

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：为满足行波管大功率、高效率、小型化的发展需求,设计了工作于V波段的宽杆半矩形环螺旋线行波管。仿真结果表明:与传统的矩形螺旋线慢波结构对比,宽杆半矩形环螺旋线慢波结构在保持色散平坦度相近的前提下,具有相速值较小、耦合阻抗较高的特点,同时,新结构更加兼容微细加工技术,易于小型化、批量化生产。在采用工作电压8900 V、工作电流0.05 A的带状电子注条件下,宽杆半矩形环螺旋线行波管的最大输出功率为112 W,对应的增益为30.5 dB,电子效率约为25.2%,瞬时3 dB带宽为24 GHz(43~67 GHz)。To meet the developing requirement of high power,high efficiency and small volume,a V-band wide-bar half rectangular-ring helix traveling wave tube(TWT)is designed.The simulation result shows that the wide-bar half rectangular-ring helix slow-wave structure(SWS)has smaller phase velocity,higher coupling impedance and similar dispersion characteristics when compared to conventional rectangular helix SWS.Meanwhile,the new structure has combined advantages of easy fabrication and mass production because of the compatibility with micromachining technology.With a sheet beam voltage of 8900 V and current of 0.05 A,the wide-bar half rectangular-ring helix TWT can provide peak power of 112 W,the corresponding small signal gain is 30.5 dB,the electron efficiency is 25.2% and 3 dB instantaneous bandwidth is 24 GHz(43~67 GHz).

关 键 词：V波段 宽杆半矩形环螺旋线 慢波结构 微细加工技术 注波互作用 带状电子注 

分 类 号：TN124[电子电信—物理电子学]