GPS接收天线的设计

The Design of GPS Recieving Antenna

本文应用局部等效性原理分析无限长圆锥等角螺旋天线中的波型模式,论述了T_(-1)波的有效辐射区。提出适当压缩T_(-1)波的有效辐射区,把小锥角双臂圆锥等角螺旋天线应用于GPS天线的设计思想。文章阐述了该天线的工程设计方法,并给出了其实测指标及使用情况。为GPS正式投入运行,提供了一种性能良好的接收天线。

This paper applies the principe of local epuivalence to the analysis of the wave-form mode in an infinite conical epuiangular spiral antenna, and discusses the active regi-on of the T_(-1) waveform. The design concept is presented that a two-arm conical equi-angular spiral antenna with small cone angles can be applied to the GPS antenna throughproperly reduced active region of the T_(-1) waveform. The engineering design method ofthe antenna has been introduced, and the performance index and application informationhas been given. It provides a kind of receiving antenna of good properties for the per-fect operation of GPS.