均匀圆阵列参数分析

针对一个任意指定最大辐射方向的均匀圆阵列,分析了阵列半径和阵元数目对阵列方位面和俯仰面方向图的影响,阵列半径越大,半功率波束宽度越小。但随着半径的增加,阵列所占空间增大,不利于与移动载体共形,所以应当予以平衡考虑。而阵元数目对阵列特性影响很小,所以只需要取能满足设计需求的最小值即可。

Analysis of Parameters of the Uniform Circular Array

In recent years,because of its good system performances,uniform circular array(UCA) antennas have been found broad applications in communication,radar detection,navigation guidance and other fields.In this paper,based on a UCA with a discretionary max-radiation direction,it analyzes the performance of the array pattern with the change of array radius and array unit number.It is found that the greater the radius,the smaller the half power beam width is;however,with the increase in radius,the array occupies more space,which is undeniable for conformal mobile carriers,thus requiring balance.But the number of array units has only minor impact on the array characteristics;therefore it suffices to take the minimum value that can meet the design requirement.