【作者】 赵柳； 刘庆想； 李相强； 李军；

【Author】 ZHAO liu, LIU Qing-xiang, LI Xiang-qiang, LI jun (College of Science, Southwest Jiaotong University, Chengdu 610031 China)

【机构】 西南交通大学理学院；

【摘要】 径向线阵列天线以其轴向长度短、体积小、重量轻、口径效率高等优点为高功率微波的发射提供了一种新的技术手段。本文在此背景下对径向波导的各种模式进行了研究。首先通过分离变量法在圆柱坐标系中求解径向波导的场方程,从而得到其高阶模式的场分量和截止波数的表达式;然后探讨了径向波导的截止波数与半径之间的依赖关系以及径向波导高阶模式的传输特点,并给出了TEM模完整的单模传输条件,这将有助于径向线阵列天线的设计和功率容量的提高。更多还原

【Abstract】 It’s a new way to radiate high power microwave by radial line planar array antenna which has smaller size and higher efficiency. This paper describes the mode characteristics in radial waveguide. The field components of higher-order modes and the whole condition of single-mode (TEM) propagation are presented. Due to the cross sections transverse to the transmission direction are not identical with one another, we give the association between cutoff wave numbers and radius, which is helpful to the design of radial line planar array antenna.更多还原