多注速调管双重入式谐振腔的解析计算与仿真

 发展了一种计算多注速调管双重入式谐振腔的计算方法。根据场的等效原理将（模型等效后）腔体划分为二个规则区域，每个区域上的场由公共界面上的虚设磁流所激发。利用格林函数积分法可求得各场的分布，由相邻区域公共边界场的匹配条件得到场匹配方程，从而求解出腔体谐振频率，并采用微扰法对计算数据予以修正,同时可得到腔体另一重要参数特性阻抗。另外使用HFSS软件仿真腔体，并给出计算、仿真、实测数据比较。

Analysis and simulation for double reentrant cavity of multiple-beam klystron

An analysis method used for the double reentrant cavity of multiple-beam klystron is developed in this paper. According to the field equivalent principle, the equivalent model cavity is divided into two regular regions. The field of each region is stimulated by virtual surface magnetic current density on the common surface and can be expressed by integral of Green functions. The resonant frequency can be obtained by solving the field matching equation. With the HFSS field computation code, the theoretical result is compared with the simulation one.