一种抑制同步开关噪声的新型蜂窝状电磁带隙结构  

A New Cellular EBG Structure for Restrain Simultaneous Switching Noise

作　　者：王跃[1] 杨曙辉[1,2] 陈迎潮 

机构地区：[1]北京信息科技大学信息与通信工程学院,北京100101 [2]南卡罗莱纳大学电气工程系,美国哥伦比亚29208

出　　处：《科学技术与工程》2015年第7期95-98,共4页Science Technology and Engineering

基　　金：国家自然科学基金(61171039)资助

摘　　要：为了解决印刷电路板(printed circuit board,PCB)上高速电路中由于同步开关噪声(simultaneous switching noise,SSN)所引起的信号完整性问题,设计了一种新型蜂窝状电磁带隙结构(cellular electromagnetic band gap structure,CE-EBG),把传统的四边形周期单元改进为六边形,抑制同步开关噪声。利用HFSS软件对CE-EBG进行了建模和阻带特性的仿真。仿真结果表明,当抑制深度为-30 d B时,抑制带宽为3.75 GHz,相对带宽为132%,其中上限截止频率为4.7 GHz,下限截止频率为0.95 GHz。和传统的四边形EBG结构相比,其相对带宽增加了15%。在仿真基础上采用PCB工艺制作了CE-EBG结构实物,实测结果与仿真结果良好吻合。In order to solve the signal integrity issue caused by the simultaneous switching noise （SSN） in high speed circuits of PCB, a novel planar electromagnetic band-gap （EBG） of cellular structure （ CEEBG）, which brought the improvement for the periodical unit from conventional square-shaped to hexagon one, was designed to suppress the SSN. The structure and the stop-band characteristics of CCEBG was modeled and simulated by using the electromagnetic simulation software HFSS. The simulation results show that, when the inhibition depth is -30 dB, the inhibiting-bandwidth is 3.75 GHz and the relative bandwidth is 132%, in which the upper cut-off and the lower cut-off frequencies of the new EBG are 4.7 GHz and 0. 95 GHz respectively. Compared with the traditional square-shaped EBG, the relative bandwidth of CE-EBG increases 15%. On the basis of simulation, the realistic CE-EBG structure was fabricated with PCB process. The measurement results are well consistent with the simulation ones.

关 键 词：电磁带隙结构 同步开关噪声(SSN) 信号完整性 蜂窝结构 阻带 

分 类 号：TN409[电子电信—微电子学与固体电子学]