基于遗传算法的单层宽频带微带天线优化设计  

Designs of single layer broadband microstrip antennas using genetic algorithm

作　　者：欧阳骏[1] 杨峰[1] 聂在平[1] 赵志钦[1] 

机构地区：[1]电子科技大学电子工程学院

出　　处：《电波科学学报》2008年第3期434-437,共4页Chinese Journal of Radio Science

基　　金：国家自然科学基金资助项目(No.10476005;60771042)

摘　　要：宽带微带天线,尤其是单层宽带天线的设计较为困难。然而U型和E型微带天线提示我们,通过适当去除传统微带天线表面一些特殊位置的金属部分,可以展宽天线带宽。本文阐述了该类天线的工作原理,并详细描述通过采用遗传算法作为优化工具,以及在程序中直接调用IE3D的求解器(MOM)进行计算、提取相关参数进行GA优化的全过程。通过对普通方形贴片微带天线的仿真和实验,我们得到的天线带宽是优化前天线带宽的3倍多,证明了方法的可靠性和高效性。It is difficult to design broadband microstrip antenna especially on single layer. However, U and E-shape microstrip antennas tell us that the operating band of an antenna can be broaden by properly taking out some parts of metal surface on the traditional microstrip antenna plane. The principle of this antenna is presented in this paper. We also describe an optimization procession in which genetic algorithm （GA） is used as an optimization tool by calling the IE3D MOM solution for calculation and parameters extraction. The reliability and efficiency of this algorithm is proved by optimizing and measuring a traditional square microstrip antenna. The optimized microstrip antenna achieves more than three times improvement in impedance bandwidth.

关 键 词：遗传算法 宽频带 微带天线 

分 类 号：TP301[自动化与计算机技术—计算机系统结构]