[1]娄鑫霞,赵阳,陈雪丽,等.基于信号完整性分析的PCB电路辐射噪声抑制方法[J].南京师范大学学报(工程技术版),2012,12(02):028-31.
 Lou Xinxia,Zhao Yang,Chen Xueli,et al.Radiated EMI Noise Mitigation Based on Signal Integrity Applied for PCB[J].Journal of Nanjing Normal University(Engineering and Technology),2012,12(02):028-31.
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基于信号完整性分析的PCB电路辐射噪声抑制方法
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南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

卷:
12卷
期数:
2012年02期
页码:
028-31
栏目:
出版日期:
2012-06-20

文章信息/Info

Title:
Radiated EMI Noise Mitigation Based on Signal Integrity Applied for PCB
作者:
娄鑫霞;赵阳;陈雪丽;张宇环;何雄峰;
南京师范大学电气与自动化工程学院,江苏南京210042
Author(s):
Lou XinxiaZhao YangChen XueliZhang YuhuanHe Xiongfeng
School of Electrical and Automation Engineering,Nanjing Normal University,Nanjing 210042,China
关键词:
辐射噪声信号完整性噪声抑制散射参数阻抗匹配
Keywords:
radiated noisesignal integritynoise mitigationscattering parameterimpedance matching
分类号:
TN41
摘要:
针对高速数字电路产生的辐射噪声,利用电磁场散射参数方法建立了PCB信号传输模型,分析了因信号振铃波产生的辐射噪声.此外,利用CST软件提取电路电磁参数,建立相应的等效电路模型,据此对PCB特征阻抗进行终端匹配,有效改善了信号传输特性.理论分析与实验结果表明,采用此方法对某型高清助视器USB端口(主频480MHz)进行阻抗匹配,改善了传输线信号完整性,降低了该设备的辐射噪声,最大可达12dBμV/m且满足GB 9254标准.
Abstract:
Signal transmission modal was established by using scattering parameter method for the radiated noise of high speed digital circuit. Mechanism of radiated noise generated by signal ringing wave was analyzed. Furthermore,PCB electromagnetic parameters were extracted by employing CST software,and the equivalent circuit was presented. Signal transmission was improved after matching the characteristic impedance of PCB. Theory analysis and experiment results show that signal ( basic frequency was 480 MHz) in USB cable of HD visual aids was improved. Radiated noise was decreased 12 dBμV/m and can meet GB 9254.

参考文献/References:

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相似文献/References:

[1]赵静.高速数字电路的设计与仿真[J].南京师范大学学报(工程技术版),2004,04(02):076.
 ZHAO Jing.Design and Simulation of High-speed Digital Circuits[J].Journal of Nanjing Normal University(Engineering and Technology),2004,04(02):076.
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备注/Memo

备注/Memo:
基金项目: 江苏省自然科学基金( BK2011789) 、毫米波国家重点实验室开放基金( K201106) .通讯联系人: 赵阳,教授,博士生导师,研究方向: 电磁兼容. E-mail: zhaoyang2@ njnu. edu. cn
更新日期/Last Update: 2013-03-11