摘要
为获得高交叉极化隔离度性能,基于极小极大值算法对单偏置赋形反射面天线进行了优化设计。在赋形优化过程中采取了两个措施来提高天线的交叉极化隔离度,一个是利用归一化的电场来构建目标函数,以消除设计增益对优化过程的影响;另一个就是适当增大反射面的焦距。为了证明所述方法的有效性,以产生一个覆盖美国全部领土的赋形波束为例对天线进行了优化设计。数值仿真结果表明,在服务区内主极化增益都高于30dBi,交叉极化隔离度都在30 dB以上。
To realize the high cross polarization isolation, the optimal design of a kind of single offset reflector antennas based on Minimax method is addressed. In the process of optimization, two measures is adopted. One is using the normalized electric field to construct the objective function to eliminate the interference of the devised gain, and the other is increasing the focal length properly, To illustrate the validity of methods, the contoured beam covering the American territory is optimized. The results show that the copolar gain is above 30 dBi and the cross polarization isolation is better than 30 dB in all coverage areas.
出处
《火力与指挥控制》
CSCD
北大核心
2012年第11期187-190,194,共5页
Fire Control & Command Control
