变厚度非平面介质罩发散系数的计算——几何光学法  

CALCULATION OF THE DIVERGENCE FACTOR OF DIELECTRIC CONFORMAL DOME PHASED ARRAY ANTENNA--GEOMETRIC OPTICS METHOD

作　　者：刘荧[1] 柴舜连[1] 姚德淼[1] 毛钧杰[1] 綦凌飞[1] 

机构地区：[1]国防科技大学电子工程学院,长沙410073

出　　处：《电子科学学刊》1998年第5期689-693,共5页

摘　　要：介质共形顶相控阵天线利用变厚度介质透镜改变相控阵波束扫描方向,理论上来说可到达半空域或更大,是一种适用于弹载、机载雷达系统的天线。本文较详细地讨论了介质罩对电磁波的发散系数的计算,给出了分析非平面变厚度分层介质对电磁波反射、折射的两种有效方法,并进行了比较。Dielectric conformal dome phased array antenna uses the dielectric dome to change the direction of the scanning beam. It is supposed to widen the scan-range of planar phased array to half spherical space or more. It is suitable for missiles and air-borne radars. When analyse its scanning characteristics, the divergence factor(DF) of the dome must be calculated. This paper provides two methods to study the DF which are based on geometrical optics, and compares them. These methods are very useful in studying the reflection and the refraction of the non-planar layered dielectric.

关 键 词：共形阵 相控阵天线 几何光学法 曲率矩阵 

分 类 号：TN821.8[电子电信—信息与通信工程]