一种抑制同步开关噪声的新颖电磁带隙结构  

A Novel EBG Structure for SSN Suppression

作　　者：黄小龙[1] 石大鹏 谢斌[3] 路宏敏[1] 

机构地区：[1]西安电子科技大学超高速电路与电磁兼容教育部重点实验室,陕西西安710071 [2]西安市地震局地震监测中心,陕西西安710007 [3]西安电子工程研究所电磁技术研究测试中心,陕西西安710100

出　　处：《电子科技》2010年第5期55-57,共3页Electronic Science and Technology

基　　金：西安地区地震活动特征研究资助项目(HX0109020818)

摘　　要：电源平面与接地平面间的同步开关噪声是现代高速、高性能数字电路应用的瓶颈之一。文中提出了一种应用于印刷电路板的新颖二维电磁带隙（MS—EBG）结构，其单位晶格由折线缝隙组合与正方形贴片桥接构成，以抑制同步开关噪声。结果表明，抑制深度为-30dB时，与传统L—bridgedEBG结构比较，新EBG结构的阻带宽度增加1．3GHz，相对带宽提高了约10％，能够有效抑制0．6-5．9GHz的同步开关噪声。In the applications of modem high-speed and high-performance digital circuits, one of the bottlenecks is the simultaneous switching noise arising between the power and ground planes. For the suppression of SSN, a novel MS-Electromagnetic Band-Gap （EBG） structure is proposed in this paper, whose unit cell consists of a me- ander line along with slot and square metal patch. Simulation results show that a stop-band of 0. 6 GHz to 5.9 GHz and a suppression depth of -30 dB are obtained with the novel EBG structure. Compared with the traditional L- bridge EBG structure with the same size, the stop-band bandwidth increases by 1.3 GHz and the relative bandwidth enhances by approximately 10%.

关 键 词：电磁带隙 同步开关噪声 印刷电路板 高速数字电路 

分 类 号：TN710[电子电信—电路与系统]