The utility model relates to a rotary vehicular antenna for a Beidou navigation system, which relates to a dipole antenna. With 4 of the dipole arm, a support frame, coaxial cable metal reflecting plate; 4 of the dipole arm were divided into two groups, each group of the front rotating dipole arm is provided with a feed point, the feeder cable is provided with inner and outer conductor, the feed point is arm connected in the wire feed point negative arm connected coaxial cable outer conductor, feeding point in each group in the same plane, and the plane has a fourth dipole arm elevation between the feed point and the ground plane is provided with a distance of two groups of rotary dipole for Beidou signal receiving and transmitting respectively, the conducting wire in the external vehicle navigation system, the outer conductor is connected to the reflecting plate, the reflecting plate can be fixed on the vehicle body. The gain performance is good, the bandwidth is large, the echo loss is low, and the omnidirectional radiation characteristic is obtained, and the transmitted signal frequency can cover 1600 + 100MHz, and the received signal frequency is covered by 2500 + 80MHz.
【技术实现步骤摘要】
本专利技术涉及一种偶极子天线,尤其是涉及一种用于卫星导航定位系统的旋转式对称双偶极子车载天线。
技术介绍
2000年,我国发射了 2颗北斗导航试验卫星,建成了北斗卫星导航试验系统,解决了卫星导航系统的有无问题。2004年,启动了北斗卫星导航系统建设,首次开始批量研制生产卫星和运载火箭,密集组网发射,探索航天工业新的发展模式。由于具有导航通信相结合的服务特色,试验系统经过几年的发展,逐步被国内用户认可,在渔业、交通、电力和国家安全等诸多领域得到了应用,特别是在汶川、玉树抗震救灾中发挥了重要作用。在世界卫星导航系统竞争激烈的今天,我们要发展自主的更高性能、更加可靠、更高效益的卫星导航系统。未来10年,全球将出现四大卫星导航系统中国北斗、美国GPS、 俄罗斯GL0NASS和欧洲伽利略共存互补的局面,天上将会有100多颗导航卫星,卫星导航将以更大的规模应用在更广泛的领域,中国的北斗系统必将发挥重要作用。卫星导航应用,将会应用到各个领域。天线设计及制造技术是卫星的核心关键技术之一,天线的各项特性及形态大小, 极大程度地决定了卫星的工作性能及应用领域,随着卫星技术的飞速发展 ...
【技术保护点】
1.用于北斗导航系统的旋转式车载天线,其特征在于设有4对递归S形旋转式偶极子臂、支撑架、馈头、馈电连接导体和金属反射板;4对递归S形旋转式偶极子臂安装在支撑架上,支撑架设于金属反射板上,4对递归S形旋转式偶极子臂呈轴对称,每对递归S形旋转式偶极子臂设有1条递归S形正臂和1条递归S形负臂,4条递归S形正臂和4条递归S形负臂的前端均设有馈电点;所述馈电连接导体设有相互绝缘的内导体和外导体,4条递归S形正臂的馈电点与馈电连接导体的内导体电连接,4条递归S形负臂的馈电点与馈电连接导体的外导体电连接,馈电连接导体的内导体分别外接卫星导航定位系统的信号接收和发射电路,馈电连接导体的外导 ...
【技术特征摘要】
【专利技术属性】
技术研发人员:游佰强,王天石,周志微,周建华,黄天赠,池金燕,陈苗苗,
申请(专利权)人:厦门大学,
类型:发明
国别省市:92
还没有人留言评论。发表了对其他浏览者有用的留言会获得科技券。