一种多模印刷四臂螺旋导航天线的设计

Design of A Multi-mode Printed Quadrifilar Helical Navigation Antenna

设计了一款螺旋臂开槽形式的多模四臂螺旋天线,工作频段覆盖四大导航系统(1160~1280 MHz,1559~1616 MHz),圆极化特性良好,且在低仰角处有较好的增益表现。通过加载交叉板反射地面增强了天线对后向多径干扰信号的应对能力,可以作为全球导航卫星系统(GNSS)接收机天线使用。

In this paper,a multi-mode quadrifilar helical antenna based on slotted spiral arm with bands covering four navigation systems(1160~1280 MHz,1559~1616 MHz)is proposed,which has good circular polarization and higher gain at low elevation angles.A cross-plate reflector ground plate is introduced to weaken the backward multipath interference signals.This multi-mode printed quadrifilar helical antenna can be used as a global navigation satellite system(GNSS)receiver antenna.