基于实数编码遗传算法的多波束天线优化设计

Optimized Design of Multi-beam Antenna Based on Real-coded Genetic Algorithm

为了在服务区内获得良好的多波束性能,提出了一种新的单口径单馈源多波束天线设计方法。通过采用对反射面进行赋形的方法来解决传统单口径单馈源多波束中交叠增益与旁瓣电平之间的矛盾。在对反射面优化的过程中将反射面的形变量作为优化变量,然后利用实数编码遗传算法对其进行优化从而实现更高的增益和载干比(C/I)性能。最终利用该算法对一个服务区为某区域的多波束天线进行了优化设计和分析,仿真结果说明了该优化方法的有效性。

To achieve good performance in the service area,a new design of shaped multi-beam antenna is presented in this paper. The inconsistency between the side lobe and beam width is resolved by shaping the surface of the reflector. In the optimization course,the distortions of the surface are set as variables,and then the real-coded genetic algorithm is used to get good performances. In the end,a simulation is performed to illustrate the efficiency of the method.