阵元排布对线性阵列天线的影响分析

线性阵列作为智能天线的一种阵元排布方式,在第三代移动通信中有着特殊的应用。在相同阵元个数的情况下,采用Matlab软件对均匀线阵、约束最小冗余线阵和最优哥伦布线阵的角度分辨能力和主瓣宽度进行仿真比较。仿真结果表明,最优哥伦布线阵可以获得更佳的角度分辨能力和更窄的主瓣宽度,但是会引起方向图旁瓣电平的升高。

Impact of Array Element Arrangement on Linear Array Antenna

As a method of element arrangement in smart antenna, linear array plays a special application in the third generation mobile communication. The angle resolving capability and main lobe width of uniform linear array, restricted minimum redundancy linear array and optimum Columbus linear array are simulated and compared by using Matlab in the condition of same array element number. The simulation result shows that optimum Columbus linear array can get better angle resolving capability and smaller main lobe width, but it can result in the increase of side lobe level.