一种60GHz微带阵天线的设计优化.pdf

Altair 2015 技术大会论文集 一种60 GHz 微带贴片阵列天线的优化设计 Optimal Design of One Microstrip Patch Array Antenna Operating at 60 GHz Frequency Band 姬帅豪 张舸 浦实 郭茜茜 （武汉理工大学 武汉市 430070） 摘 要: 因60 GHz 频段具有频谱资源丰富、无线传输速率高、安全性高等特点，为未来无 线通信系统计划选取的主要工作频段之一，故在此毫米波工作频段下的小型化、集成化天线 设计成为行内研究热点问题之一。本文基于一般微带贴片阵列结构，特别针对60 GHz 频段 进行了优化设计。具体给出了一种2×2 微带贴片阵列天线，这里对每付矩形贴片其中一组 对角单元进行切角处理，预期实现圆极化特性，并尝试通过调整贴片间距，以实现小型化和 宽频带特性。本文设计采用电磁仿真软件 —— FEKO 进行仿真计算，结果显示，通过本文 优化设计方法，在保持高增益的同时实现了圆极化与宽频带特性，并减小了设备尺寸。 关键词: 60GHz 微带贴片 切角 阵列天线 FEKO Abstract : The 60 GHz frequency band has advantageous properties of abundant spectrum resource, high wireless transmission rate, and high security. As we all know, it has become one of the major working frequency bands chosen for the future wireless communication systems. Hence, the miniaturization and integration design of the antenna working at this frequency band have attracted more interests from the related research fields, especially based on the normal structure of microstrip patch antenna array, the antenna aiming at 60 GHz frequency band will be optimized in this paper. Here, a kind of 2 ×2 microstrip patch array antenna is given. Through partly cutting one pair of the opposite corners on rectangular each patch element, the expected circular polarization characteristic could be realized. Furthermore, after adjusting the gaps between patch elements, some other characteristics like the miniaturization and the wide bandwidth can be also improved. An electromagnetic commercial numerical simulation software —— FEKO is applied in this paper. The results will show that, by employing our design method, the high gain is maintained, while the circular polarization is realized, the operation bandwidth is expanded and miniaturization of antenna dimension