摘要
复杂电子系统产生的电磁干扰噪声包括传导EMI噪声和辐射EMI噪声,辐射EMI噪声是以空间电磁场形式影响其他电子设备的.针对复杂电子系统产生的辐射EMI噪声,分别建立了两种辐射噪声理论模型及其等效电路,包括基于PCB电路数据传输线引起的辐射噪声模型分析和基于电路芯片时钟信号管脚引起的辐射噪声模型分析.并针对上述辐射噪声提出了相应的噪声抑制方法.实验结果表明,采用文中方法,某型医疗盆地粉碎机辐射EMI噪声抑制效果可达10 d BμV/m,从而验证了方法的有效性.
Electromagnetic interference（ EMI） generated by complex electronics systems includes conducted EMI noise and radiated EMI noise. The operation of other electronic equipment was influenced by radiated EMI noise through space electromagnetic field. In order to analyze radiated EMI noise generated by complex electronics systems,two theoretical models and equivalent circuits are proposed,including model analysis of radiation noise based on data transmission lines of PCB circuit and the clock signal pin of circuit chip. Furthermore,noise suppression methods are designed based on the above radiated noises. The experiment results show that the noise of a certain type of medical basin crusher decreases 10 dBμV / m by employing the suggested approaches of the paper,so the validity of the approaches is verified.
出处
《南京师范大学学报（工程技术版）》
CAS
2014年第4期1-5,共5页
Journal of Nanjing Normal University(Engineering and Technology Edition)
基金
江苏省自然科学基金(BK2011789)
江苏省教育厅高校科研成果产业化推进项目(JHB2011-20)
江苏省普通高校研究生科研创新计划项目(CXZZ12_0404
CXLX12_0411)
关键词
复杂电子系统
辐射EMI噪声
噪声理论模型
噪声抑制
complex electronics systems
radiated EMI noise
noise theoretical models
noise suppression
