摘要
针对印刷电路板中电源平面与接地平面间的同步开关噪声抑制问题,提出了一种新型的超宽带二维电磁带隙电源平面.新型电磁带隙电源平面的阻带带隙抑制深度为-30dB,阻带宽度为11.14GHz,下限截止频率为0.28GHz,其同步开关噪声抑制特性的测量结果与仿真结果吻合良好.与同参数的Lbridged电磁带隙结构比较,新型电磁带隙结构的阻带带宽增加约48.7%,下限截止频率降低0.46GHz.当采用差分线对传输信号时,新型电磁带隙电源平面对信号的完整性影响较小,有助于改善高速数字电路系统的电磁兼容性.
For ultra-wideband suppression of simultaneous switching noise between the power plane and the ground plane within the printed circuit board, a novel power plane with planar electromagnetic bandgap structures is proposed. When the suppression depth of the bandgap is -30 dB, the width of the stop-band is 11.14 GHz and the lower cut-off frequency is 0.28 GHz. The simulated and measured results of the novel power plane with planar electromagnetic bandgap structures are in good ageement. The new EBG＇s stopband is dramatically increased about 48.7~, with the lower cut-off frequency decreased to 0.46 GHz compared with the L-bridged EBG structure with the same parameters. The signal integrity of the new EBG power plane can be improved by using differential transmission lines. This work is helpful for the EMC improvement of high speed digital circuits.
作者
张光硕
路宏敏
谭康伯
官乔
肖骏飞
ZHANGGuangshuo LU Hongmin TAN Kangbo GUANG Qiao XIAO Junfei(School of Electronic Engineering, Xidian Univ., Xi＇an ？10071, China)
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2016年第5期52-56,189,共6页
Journal of Xidian University
基金
国家部委预研基金资助项目(9140xxxxxxx)
关键词
同步开关噪声
电磁带隙
印刷电路板
电磁兼容
simultaneous switching noise（SSN）
electromagnetic band gap（EBG）
printed circuit boards（PCB）
electromagnetic compatibility（EMC）
