多约束条件下的阵列天线方向图可重构设计

介绍了一种多个约束条件下的阵列天线方向图可重构设计方法。在阵列激励功率种类与仅相位加权等条件的限制下,优化后的阵列天线多种方向图均满足了预设目标。首先,建立了多目标优化求解模型;然后,针对不同的问题采用了不同的优化方法进行求解。优化后的阵列采用了三种不同的功率组件,并在同一功率激励情况下采用不同的相位分布分别实现了低副瓣笔形波束、45°余割平方与22°扇形方向图的可重构设计,而且优化后的总输入功率较相同副瓣电平下的泰勒加权的总功率增加了约13%。

Reconfigurable Design of Array Antenna Patterns with Multiple Constraints

A reconfigurable design method of array antenna pattern under multiple constraints is presented. Under the constraints of array excitation power type and phase weighting only, the optimized array antenna pattern satisfies the preset target. Firstly, the multi-objective optimization model is established, and then different optimization methods are used to solve different problems. The optimized array uses three different power components, and reconfigurable design of pencil-shaped low sidelobe beam, 45 degree cosecant square and 22 degree sector pattern with different phase distribution under the same power excitation is realized . The total input power of the optimized array increases by about 13% compared with the Taylor-weighted total power at the same sidelobe level.