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E波段折叠波导行波管集成极靴结构设计及仿真
李思睿, 李天一, 陈 辑, 蔡 军, 冯进军, 闫铁昌
北京真空电子技术研究所 微波电真空器件国家级重点实验室,北京 100015
摘要:
为进一步提升毫米波折叠波导行波管的输出功率,通过整体加工的工艺方法,将折叠波导慢波结构和周期永磁聚焦系统在母材上同时加工,形成一种集成极靴结构。基于圆形注电子光学系统,设计了E波段折叠波导行波管的集成极靴结构。利用三维电磁场模拟软件(CST)的微波工作室,设计并模拟了慢波结构的冷特性参数,并根据慢波结构尺寸设计周期永磁聚焦系统。通过电磁工作环境仿真软件(OPERA)对磁场进行仿真验证,最终整管粒子数值模拟(PIC)计算结果表明,在61~71 GHz频带内可获得大于1 kW的饱和输出功率。该集成极靴结构在提供强轴向磁场的同时,具有结构紧凑、散热性好等优点。
关键词:  E波段  折叠波导  集成极靴  行波管
DOI:10.11805/TKYDA2019321
分类号:
基金项目:
Design and simulation of integrated pole piece structure for E-band Folded Waveguide TWT
LI Sirui, LI Tianyi, CHEN Ji, CAI JUN, FENG Jinjun, YAN Tiechang
National Key Laboratory of Science and Technology on Vacuum Electronics,Beijing Vacuum Electronics Research Institute,Beijing 100015,China
Abstract:
It is an effective way to use the integrated pole piece structure in order to improve the output power of millimeter wave Folded Waveguide(FWG) Traveling Wave Tube(TWT). Based on the circular beam electron optical system, an integrated pole piece structure is designed for E-band folded waveguide TWT. In this paper, the cold characteristic parameters of slow wave structure are designed and simulated by using the Computer Simulation Technology(CST), and the integrated pole piece focusing system is designed. The magnetic field is simulated and verified by Operating Environment for Electromagnetic Research and Analysis(OPERA). The final Particle-In-Cell(PIC) simulation calculation results show that the output power of more than 1 kW can be obtained in the frequency band of 61-71 GHz. The integrated pole piece structure not only provides strong axial magnetic field, but also has the advantages of compact structure and good heat dissipation.
Key words:  E-band  Folded Waveguide  integrated pole piece  Traveling Wave Tube

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