一种抑制背向辐射的微带缝隙天线的优化设计  

Optimized Design of Microstrip Slot Antenna to Reduce Backward Radiation

作　　者：耿彦峰[1] 闫永光[1] 徐勇[1] 韩国瑞[1] 张文梅[1] 

机构地区：[1]山西大学物理电子工程学院,山西太原030006

出　　处：《测试技术学报》2015年第3期185-189,共5页Journal of Test and Measurement Technology

基　　金：国家自然科学基金资助项目(61172045;61271160);国家基础科学人才培养基金资助项目(J1103210);山西省自然科学基金资助项目(2012011013-3;2014021021-1)

摘　　要：本文主要针对一种应用于WLAN的微带缝隙天线进行研究和优化设计.通过在天线背面增加EBG结构的方法,对缝隙天线的背向辐射进行抑制,以降低天线的近场干扰.利用HFSS软件进行仿真,其结果表明,在增加EBG结构以后,不仅使得微带缝隙天线的背向辐射从-5dB下降到-25dB,而且微带天线的交叉极化也得到极大的抑制,在5.2GHz时交叉极化低于-25dB,同时使得天线的增益从2.91dBi提高到5.27dBi.In this paper,a novel of microstrip slot antenna applied to WLAN is studied and optimized. Using the mushroom-like EBG structure at back of the slot antenna,the backward radiation is su-pressed,and the antenna near-field interference is reduced.By HFSS,the performance of the microstrip slot antenna is simulated and analyzed.The simulation results show that the backward radiation of the microstrip slot antenna with the mushroom-like EBG structure is reduced from -5 dB to -25 dB.In ad-dition,the cross polarization is less than -30 dB,and at the same time the gain of antenna increased from 2.91 dBi to 5.27 dBi at 5.2 GHz.

关 键 词：微带缝隙天线 电磁带隙结构 蘑菇型 EBG 背向辐射 

分 类 号：TN823.24[电子电信—信息与通信工程]