一种具有新颖电磁带隙结构的印刷电路板电源平面  

Power plan of the printed circuit board with novel electromagnetic band-gap structures

作　　者：路宏敏[1] 余志勇[2] 赵益民[1] 那彦[1] 

机构地区：[1]西安电子科技大学电子工程学院,陕西西安710071 [2]解放军第二炮兵工程学院,陕西西安710025

出　　处：《西安电子科技大学学报》2011年第3期20-23,共4页Journal of Xidian University

基　　金：国家自然科学基金资助项目(60571059)

摘　　要：针对印刷电路板电源平面或地平面同步开关噪声的抑制问题,提出了一种新颖的二维电磁带隙结构.这一新颖设计基于用折线增加贴片的有效电感,单位晶格由折线、缝隙和正方形金属贴片桥接构建.结果表明,与相同参数的L形桥接电磁带隙结构比较,抑制深度为-30 dB时,新型二维电磁带隙结构的阻带宽度覆盖0.40 GHz到5.1 GHz的频率范围,相对带宽提高了约16.2%,阻带下限截止频率下降了200MHz,且具有全向抑制同步开关噪声以及采用标准印刷电路板工艺制作的优势.In allusion to the suppression of the simultaneous switching noise （SSN） within the power/ground planes of the printed circuit boards, a novel planar electromagnetic band-gap （EBG） structure is proposed. The novel design is based on using meander lines to increase the effective inductance of EBG patches, and the unit cell of the EBG power plane consists of one square patch with the slots and four meander line bridges. The design is validated numerically, and simulation results show that the -30 dB suppression bandwidth ranges from 0.40 GHz to 5.1 GHz compared with the L-bridged EBG of the same parameters, that the lower cut-off frequency is decreased by 200 MHz, and that the relative bandwidth is increased by about 16. 2%. In addition to the advantage of the omnidirectional suppression of the SSN, the proposed EBG structure can be achieved by means of the standard PCB process.

关 键 词：印刷电路板 同步开关噪声 电磁带隙结构 

分 类 号：TN41[电子电信—微电子学与固体电子学]