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A fast mechanism identification approach for radiated EMI using near field measurement

机译:基于近场测量的辐射EMI快速机制识别方法

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摘要

In the paper, a fast approach is proposed to identify the mechanism for radiated EMI using near field measurement. Equivalent radiation models have been set up to analyze radiated source, which include electric dipole (Common Mode) and magnetic dipole (Differential Mode). In near field region, according to wave impedance theory, mechanism of radiated noise can be identified and noise reduction methods could be adopted. Blue tooth communication and PCBs are investigated to validate the approach. The results show that noise from blue tooth is CM noise and noise reduces by 40% after noise suppression.
机译:在本文中,提出了一种使用近场测量来识别辐射EMI的机制的快速方法。已经建立了等效辐射模型来分析辐射源,包括电偶极子(共模)和磁偶极子(差模)。在近场区域,根据波阻抗理论,可以确定辐射噪声的机理,并采取降噪的方法。研究了蓝牙通信和PCB,以验证该方法。结果表明,来自蓝牙的噪声为CM噪声,经过噪声抑制后噪声降低了40%。

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