Electromagnetic noise in electric circuits: Ringing and resonance phenomena in the common mode
Electromagnetic noise in electric circuits: Ringing and resonance phenomena in the common mode
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DOI：
10.1063/1.4902098
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发表时间：
2014-11-01
期刊：
影响因子：
1.6
通讯作者：
Toki, Hiroshi
中科院分区：
文献类型：
--
作者：
Kitora, Shuji;Abe, Masayuki;Toki, Hiroshi
通常认为，电磁噪声源于电路中的电信号与环境中周围材料中的电信号的耦合。然而，直到现在，噪声现象还没有被量化。为了研究噪声现象，我们考虑了一个标准电路(两条传输线)，其中引入了一条额外的传输线，以便显式地考虑导体在环境中的影响。我们使用新开发的多导体传输线理论对得到的三线电路进行计算，以确定在不同条件下电路与环境中导体之间的耦合程度。我们观察到共模中的振铃和共振现象，这些现象影响了简正模作为电磁噪声的性能。最近的实验证实了我们的发现，在这些实验中，导线使用印刷电路板(PCB)以不同的方式排列。发现标准电路中的普通用电在激发共模噪声方面是最差的。(C)2014年作者(S)。
It is generally believed that electromagnetic noise originates from the coupling of electric signals in a circuit with electric signals in surrounding materials in the environment. However, the noise phenomenon had not been quantified until now. In order to study the phenomenon of noise, we considered a standard circuit (two transmission lines), to which an additional transmission line was introduced in order to explicitly take into account the effect of conductors in the environment. We performed calculations using a newly developed multiconductor transmission-line theory for the resulting three-line circuit in order to determine the magnitude of the coupling between the circuit and the conductors in the environment under various conditions. We observed ringing and resonance phenomena in the common mode, which influenced the performance of the normal mode as electromagnetic noise. Our findings were confirmed by recent experiments in which conductor lines were arranged in various ways using a printed circuit board (PCB). The ordinary usage of electricity in the standard electric circuit was found to be worst in exciting the common mode noise. (C) 2014 Author(s).