三频双圆极化北斗天线的设计  

Design of Beidou antenna with tri-band and dual circular polarization

作　　者：张辉[1] 王洪金[1] 郭滨 邢红兵 

机构地区：[1]江苏大学计算机科学与通信工程学院,江苏镇江212013 [2]镇江红宝利电子有限公司,江苏镇江212000

出　　处：《电子元件与材料》2016年第3期67-70,80,共5页Electronic Components And Materials

基　　金：镇江市科技计划项目资助(No.SGY20130002)

摘　　要：设计了一款新型的小型化多频段圆极化北斗天线。天线采用双层层叠结构设计,上层天线采用矩形贴片切角开缝的方法,实现北斗系统L频段的左圆极化;下层天线利用复合左右手传输线结构进行设计,通过在矩形贴片中间位置加入非对称十字和直角折线槽结构,同时在四角位置加入90o折线结构和金属过孔,实现北斗系统B1频段、S频段以及GPS L1频段的右圆极化。天线尺寸为39 mm×39 mm×6.8 mm。仿真结果表明该天线各项指标均满足北斗系统对天线性能的要求。A new type of miniaturized multi-band circularly polarized antenna was designed. The antenna has double layered structure. The upper antenna with corner cutting and slitted rectangular patch, achieved left circularly polarized on L band of Beidou system; The lower antenna using the CRLH transmission line structure was designed. By adding asymmetrical cross and right line groove structure in the middle of the rectangular patch and 90 o line structure with metal vias at four corners, the lower antenna achieved right circularly polarized on B1, S band of Beidou System and L1 band of GPS. Antenna size is 39 mm×39 mm×6.8 mm. The simulation results show that the antenna meets the performance requirements of Beidou system.

关 键 词：微带天线 北斗卫星导航系统 圆极化 多频段 小型化 复合左右手传输线 

分 类 号：TN82[电子电信—信息与通信工程]