无介质基片直线渐变式槽缝天线辐射特性的分析  

Research on Copolar and Cross-Polar Radiation of Linearly Tapered Slot Antenna Without Dielectctric Substrate

作　　者：张旭春[1] 甄蜀春[1] 张学礼[1] 

机构地区：[1]空军工程大学导弹学院制导雷达工程系,三原713800

出　　处：《电子对抗技术》2003年第2期33-36,共4页

摘　　要：根据电磁场的等效原理 ,基于半无限大导电平面上磁流元的并矢格林函数 ,给出了无介质基片直线渐变式槽缝天线 (TEM LTSA)远区辐射场的主极化及交叉极化分量的理论公式 ,各极化分量只需计算一维的数值积分。分析天线张角、天线长度的各种结构的TEM -LTSA的交叉极化辐射特性 。The formulas calculating copolar and cross-polar radiation patterns of the air dielectric linearly tapered slot antenna (LTSA) are given, based on the dyadic Green function of magnetic current in the presence of a conducting half-plane. The formulas are reduced to one dimensional integrals. Design curves of the difference between the maximum copolar level and the maximum cross-polar level in the diagonal plane as the function of the flare angel(7°～22°), with the antenna length(L/λ 0=3～6) as a parameter, are presented.

关 键 词：介质基片 辐射特性 直线渐变式槽缝天线 并矢格林函数 交叉极化 TEM-LTSA 

分 类 号：TN823.24[电子电信—信息与通信工程]