隔离线接地孔间距对抑制串扰效能影响的分析  

Analysis of the Effect of Crosstalk Reduction Due to the Vias Spacing of Additional Grounded Tracks

作　　者：丁旭旻[1] 张少卿[1] 吴群[1] 

机构地区：[1]哈尔滨工业大学电子与信息工程学院,哈尔滨150001

出　　处：《微波学报》2010年第S2期17-20,共4页Journal of Microwaves

摘　　要：抑制印制电路板上微带线间串扰是高速PCB信号完整性设计的重要内容。文中研究了在两平行微带线之间加上带有接地孔的隔离线这种方法减小串扰的有效性,讨论了在工作频带内因此发生谐振的孔间距要求,仿真得到了不同情况下的S参数、电流分布图。通过加上升时间0.1ns、周期1ns的方波脉冲激励,比较了改善前后端口的串扰的情况,可以看出串扰得到了有效地抑制。crosstalk suppression is very important is very important in signal integrity of PCB design.In this paper,the crosstalk reduction effect of an additional track introduced between two parallel printed circuit tracks is studied,the additional track is grounded by vias.And the maximum spacing of the vias is discussed in order to ensure the resonant frequency does not lie within the operating band of the circuit.With the electromagnetic simulation software,we get the S-parameter,the distribution of current in different situations.Using a square wave,whose risetime is 0.1ns and period is 1ns,we can make comparison of the crosstalk at the ports before and after it.By this,we can find the crosstalk can be reduced by this way.

关 键 词：高速PCB 微带线 串扰 过孔间距 信号完整性 

分 类 号：TN41[电子电信—微电子学与固体电子学]