轴向输出相对论磁控管真空室过渡段设计  

Design of Vacuum Chamber Transition Section in Relativitistic Magnetron with Axial Diffraction Output

作　　者：徐张[1] 李天明[1] 

机构地区：[1]电子科技大学国家863计划强辐射重点实验室,成都610054

出　　处：《微波学报》2010年第S2期113-116,共4页Journal of Microwaves

摘　　要：相对于径向输出相对论磁控管而言,轴向输出相对论磁控管具有结构紧凑、高阻抗、角向均匀性、工作模式稳定以及高功率输出等一系列优点。但由于外加磁体对轴向输出端半径的限制,导致真空室的轴向长度大于磁控管的轴向长度,为了实现工程应用,一段较短的轴向输出过渡段被设计。文中主要是通过仿真软件仿真找到较为有效的过渡段设计以实现在S波段π模工作模式下的轴向输出相对论磁控管的能量有效输出。整个器件的轴向输出段的总长度为378 mm,输出端圆柱波导的半径为73.8 mm。在三维粒子模拟下得到一种较为有效的过渡段结构,功率转换效率为28.7%,相应的输出功率为1.371GW,辐射模式为TE_(01)模。Compared with relativistic magnetron with radial diffraction output,relativistic magnetron with axial diffraction output has series of advantages,such as compact structure,high impedance,azimuthal symmetry,steady mode and high output power. However,as the external magnet limits radius of axial output,lead to the axial length of the vacuum chamber is greater than the axial length of the magnetron,a short transition section is designed for application.So the main task of this paper is to find appropriate transition section through simulation,improving power transmission efficiency in S-bandπ-mode operating.The length of axial output section is 378 mm,the radius of cylindrical waveguide is 73.8 mm in output section.A effective transition section is achieved in three-dimensional particle-in-cell(PIC),power conversion efficiency can reach 28.7%corresponding to 1.371GW output and radiation mode is TE_(01).

关 键 词：轴向输 相对论磁控管 过渡段设计 S波段 

分 类 号：TN123[电子电信—物理电子学]