一种抑制同步开关噪声的新型S桥电磁带隙结构  

A Novel S-bridge Electromagnetic Band Gap Structure for Suppressing the Simultaneous Switching Noise

作　　者：刘峰[1] 杨曙辉[2,3] 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]中国传媒大学理工学部通信工程系,北京100024 [3]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》2016年第16期70-72,94,共4页Science Technology and Engineering

基　　金：国家自然科学基金(61171039)资助

摘　　要：为了解决印制电路板中由同步开关噪声（simultaneous switching noise,SSN）引起的高速电路信号完整性问题,通过把传统S桥相邻单元电磁带隙结构连接线的直线改为折线并采用多缝隙的单元结构,设计了一种新型S桥电磁带隙结构（electromagnetic band gap,EBG）。利用Ansoft HFSS软件对该EBG结构进行了数据仿真,并进行了电路实物的加工与测试,仿真结果与实测结果良好吻合。在抑制深度为-30 d B时,其阻带范围为0.2~9.8 GHz,相对阻带宽度为192%,与传统S桥EBG结构相比阻带宽度增加了2.8 GHz,可以更好地抑制同步开关噪声。In order to solve the signal integrity issue caused by the simultaneous switching noise（ SSN） in high speed circuits on PCB,a novel S-bridge electromagnetic band gap structure is proposed,which changes the straight line of traditional S-bridge adjacent unit of electromagnetic band gap（ EBG） into meander one and adds the multislit units. The new EBG structure was simulated by using the software of HFSS. The realistic EBG structure was fabricated and tested. The measurement results are well consistent with the simulation data. When the inhibition of depth is set to- 30 d B,the stop band ranges from 0. 2 GHz to 9. 8 GHz and the relative suppression bandwidth is192%. Compared with the traditional S-bridge EBG structure,the suppression bandwidth of new EBG increases by2. 8 GHz. Consequently,it will be better for suppressing SSN.

关 键 词：同步开关噪声 信号完整性 电磁带隙结构 S桥 

分 类 号：TN409[电子电信—微电子学与固体电子学]