天线阵深零位产生的相位控制方法

Phase Control Technique for Design of Pattern with Deep Null

本文研究了阵列天线方向图深零位产生的问题．即在天线阵各单元激励的振幅为固定的情况下，只控制天线阵单元激励的相位，使天线阵辐射的方向图在某方向具有深零位．本文将深零位产生问题转化为非线性规划问题．利用阵列天线的量方向图，通过加权构造一个非线性目标函数燃后运用拟牛顿法给予解决．对２１个单元Ｃｈｅｂｙｓｈｅｖ天线阵的计算机模拟结果说明，本文深零位产生的相位控制方法是有效的．

In the paper,an effiCacious phase control technique is presented to design the array pattern with deep nulls at different positions for an arbitrary array. We employ the weightfunction to construct an effective objective function and apply an iterative method to minimize it.The iterative method is based on the quasi-Newton method to ensure the super-linear convergence.Some numerical results based on a 21-element Chebyshev array are presented to demonstrate theefficiency of our method.