To meet with the requirements of designing a wide bandwidth, wide beam Ku-Band microwave antenna, parallel Genetic Algorithms (GA) and an improved software NEC2 are used in this article. The parallel computing system in this design is composed of several PCs and the message passing protocols among PCs are MPI. The NEC2 software based on the method of moments is used as a numerical calculation method. Designing a wide bandwidth, wide beam width and circularly-polarized microwave Ku-Band antenna by the traditional methods is difficult [1]. However, the single-branch Ku-Band antenna with 7-segments which is designed by parallel Gas in a very short design period in this article, has an excellent performance in both patterns and VSWR.%针对一种宽波束、宽带微波Ku波段卫星天线的设计要求,本文采用了并行化遗传算法(GA)和改进的NEC2软件来进行天线综合.所设计的遗传算法并行计算平台由多台微机组成,它们之间的消息传递采用MPI来实现,天线的电磁数值计算采用改进的基于矩量法的NEC2软件完成.宽波束、宽带圆极化天线可以应用于空间广播通信等领域,使用传统手工方法进行这种天线设计有一定困难[1].采用并行GA设计出来的一种单支7折线Ku波段天线,不仅满足了要求,方向图的特性优良,而且减小了整个天线的设计周期.
展开▼
