中文摘要：

为了实现电磁带隙结构（Electromagnetic Band Gap,EBG）的小型化,提出了一种螺旋地板式电磁带隙结构,即通过在接地金属板上加载螺旋结构的方法来减小谐振频率,实现EBG单元结构的小型化,并用HFSS软件建立结构仿真模型,分析了螺旋线单元长度变化对电磁带隙特性的影响规律。结果表明增加螺旋线单元长度可以使频率带隙向低频方向移动。最后,将地平面加载与未加载螺旋结构的两种EBG进行仿真分析。结果表明,螺旋地板式EBG能够抑制更低频段的电磁波,达到了EBG单元结构小型化的目的。

英文摘要：

in order to achieve miniaturization of electromagnetic band gap （EBG）, the EBG with spiral ground plane was proposed. To reduce the resonant frequency by loading the spiral structure on the ground metal plate, the miniaturization of the EBG unit was realized. Then, the spiral plane EBG structure simulation model was established by using HFSS software, and the influence of the different length of a spiral unit on the electromagnetic band gap characteristics was analyzed. The results show that the frequency band gap shifts to low frequency with the increment of length of a spiral unit. Finally, The EBG structures with spiral ground plane and without spiral ground plane were compared by using simulating analysis. It can be concluded that the former can suppress the electromagnetic wave in the lower frequency band and the former achieves the purpose of miniaturization of EBG structure unit.