一种结合遗传算法和HFSS的天线仿真与优化方法

An Antenna Simulation and Optimization Method by Combination of Genetic Algorithm and HFSS

电磁仿真技术在现代天线设计中发挥着重要作用。讨论了一种结合遗传算法和全波电磁仿真软件HFSS的天线优化设计方法。采用遗传算法进行天线设计,能够直接设计一种新结构天线,并易于对天线的结构进行调整。在介绍了遗传算法基本原理的基础上,阐述了遗传算法在天线仿真和优化设计中的具体应用问题。通过VBS脚本将遗传算法与Ansoft HFSS连接起来,对一种电磁耦合馈电的双极化毫米波微带天线进行了优化设计,展宽了该天线的阻抗带宽,天线指标满足设计要求,表明了采用遗传算法进行天线仿真的可行性。

The electromagnetic simulation technique plays an important role in modern antenna design. This paper discussed an antenna simulation and optimization method combining Genetic Algorithm( GA). The proposed antenna design method employing GA can design a new kind of antenna structure and easily adjust the antenna structure parameter. Based on the introduction of the principle of GA,this paper introduced the application problem of GA in antenna simulation and optimization. Furthermore,this paper used the VBS cript to combine the Genetic Algorithm and the Ansoft HFSS,and optimized a dual polarized millimeter wave microstrip antenna employing electromagnetic coupling feed. The voltage standing wave ratio( VSWR) bandwidth of the discussed antenna was increased and the technical requirements of designed antenna were met,which shows the feasibility of antenna simulation and optimization method based on GA.