一种新型超低剖面的周期性缺陷地可穿戴天线  

A Novel Super-low-profile Periodic Defected Ground Structure Wearable Antenna

作　　者：段中航[1] 逯贵祯[1] 刘啸岚[1] DUAN Zhong-hang;LU Gui-zhen;LIU Xiao-lan(School of Information Engineering,Communication University of China,Beijing 100024,China)

机构地区：[1]中国传媒大学信息工程学院,北京100024

出　　处：《中国传媒大学学报（自然科学版）》2017年第5期13-20,共8页Journal of Communication University of China：Science and Technology

摘　　要：可穿戴天线为了适应穿戴要求,通常要求厚度很薄并且后向辐射小,以减免对人体的影响。微带天线可以减少后向辐射,但是当厚度变薄的时候,天线的辐射性能大大降低。为了满足穿戴天线对辐射性能和厚度的要求,本文对使用周期性缺陷地结构的超低剖面(0.5mm)微带天线进行了研究,在微带天线辐射缝隙位置,采用周期结构提高超低剖面微带天线的辐射性能,同时又可以降低微带天线的后向辐射。仿真及实验结果表明这种周期性缺陷地结构对天线性能有着显著的提升,且对人体更加安全。To meet application requirements,wearable antenna is required to have low profile and stingy backward radiation.Microstrip antenna has a minute radiation to its back,but the radiation performances decrease quite a lot when its thickness is reduced.In order to meet the wearable antenna’s needs on the performance and thickness synchronously,a microstrip antenna of super-low-profile(0.5mm)using the periodic defected ground structure on was proposed.The new type of periodic structure was placed under the radiation aperture of microstrip antenna,obtained both super-low-profile,better radiation performances and low backward radiation.Simulated and experimental results show that this kind of defected ground structure has a significant improvement on the performances of antenna,and more safety to human body.

关 键 词：低剖面天线 周期结构 可穿戴天线 缺陷地结构 

分 类 号：TN828.6[电子电信—信息与通信工程]