一种八单元圆环阵实现多波束的方法

A Method of Realizing Multibeam by a Eight-unit Circular Array

给出了一种用改进的Butler八单元圆环阵实现固定多波束天线阵的方法。天线阵由八个垂直地面放置的半波振子组成,通过改变馈电端口来控制波束的指向。由于添加了八个额外的移相器,可产生八个并行波束实现对水平面的完全覆盖,并可用于信号到达角的粗略估计。

A circular array realizing multibeam is gived by modified traditional Bulter network.The array is made up of vertical eight half-wavelength antennas.Changing the feedingport,it can control the beam direction.Because of additional eight phase splitters,the array can provided eight parallel beam covered the whole horizontal surface,and use for estimation of DoA.