The concept of dominant effect in EMC

Paul, Clayton R.

doi:10.1109/15.155857

Cited by 13 publications

(6 citation statements)

References 7 publications

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“…It should be noticed as well that the far-field radiation induced by CM current is far higher as compared to that induced by DM current at the frequencies below 400 MHz. This phenomenon is also in line with the classical point of view [10] . A 3D physical model of the entire circuit presented in Fig.…”

Section: Prediction Results and Analysis Of Radiation Produced By Sin...supporting

confidence: 91%

“…where S is the area of the PCB loop, r 1 is the distance between the observation point and the center of the PCB loop, and θ 1 is the angle between the connection line of the observation point and the plumb line at the center of the DM loop, respectively [10] .…”

Section: Radiation Prediction Induced By Dm Current In Free Spacementioning

confidence: 99%

“…To alleviate the problems mentioned above, physical mechanisms of far-field radiation emission have been studied for several decades [10][11][12][13][14][15][16] . Paul was first to find that the common mode (CM) current along conductors may play a greater role in far-field radiated emission than the differential mode (DM) current [10][11] . It was also suggested that physical asymmetry of the sources or the structure causes the appearance of CM current.…”

Section: Introductionmentioning

confidence: 99%

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Electromagnetic Radiation Mechanism Analysis and Field Strength Prediction of an Elementary Digital Inverter with Cables

Tao

et al. 2022

Chin. J. Electr. Eng.

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In this paper, common mode (CM) and differential mode (DM) far-field radiation models of a typical digital inverter with cables are built up to predict electromagnetic field strength and analyze field characteristics. The CM current model and its analyses are based on the imbalance difference method. It is found out that the voltage between the drain and the source electrodes of upper transistor is the key equivalent source of electromagnetic interference (EMI). Far-field radiation strength of the digital inverter in free space is predicted by using the asymmetrical antenna radiation method and current loop radiation method. The accuracy of these methods is verified by the CST electromagnetic simulation results in the frequency range from 1 MHz to 400 MHz. Furthermore, the radiation models are improved by using the mirror method, which enables to include the reflection effect of the metal ground plane at the electromagnetic compatibility (EMC) test site. Both the results of measurements in a semi-anechoic chamber and the simulation results confirm the proposed electromagnetic radiation prediction method.

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Section: Prediction Results and Analysis Of Radiation Produced By Sin...supporting

confidence: 91%

Section: Radiation Prediction Induced By Dm Current In Free Spacementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electromagnetic Radiation Mechanism Analysis and Field Strength Prediction of an Elementary Digital Inverter with Cables

Tao

et al. 2022

Chin. J. Electr. Eng.

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“…Modeling strategies and bestpractice for XT reduction are very similar to those adopted for field-to-wire coupling (FC), which is also a distributed coupling phenomenon due to an external electromagnetic (EM) field impinging on a victim wiring structure. The close analogy, [1], between these two coupling phenomena suggests the possibility of resorting to crosstalk to develop alternative procedures for radiated susceptibility (RS) testing of systems involving interconnecting wiring harness. This could be particularly appealing for pre-compliance verification of units and sub-units to be assembled in complex systems (such as in cars, aircrafts, etc.).…”

Section: Introductionmentioning

confidence: 99%

Relating Crosstalk to Plane-Wave Field-to-Wire Coupling

Grassi

Spadacini

Yuan

et al. 2016

IEICE Trans. Commun.

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In this work, a novel formulation of crosstalk (XT) is developed, in which the perturbation/loading effect that the generator circuit exerts on the passive part of the receptor circuit is elucidated. Practical conditions (i.e., weak coupling and matching/mismatching of the generator circuit) under which this effect can be neglected are then discussed and exploited to develop an alternative radiated susceptibility (RS) test procedure, which resorts to crosstalk to induce at the terminations of a cable harness the same disturbance that would be induced by an external uniform plane-wave field. The proposed procedure, here developed with reference to typical RS setups foreseen by Standards of the aerospace sector, assures equivalence with field coupling without a priori knowledge and/or specific assumptions on the units connected to the terminations of the cable harness. Accuracy of the proposed scheme of equivalence is assessed by virtual experiments carried out in a full-wave simulation environment.

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“…Similarly, L d suppresses both DM noise and CM noise, but its effect on CM noise is practically very little because of the relatively large value of L c [3]. Therefore, it is important to determine, which component is dominant in a particular frequency range, so that the power supply filter may be modified to suit the regulatory limits [4][5][6]. .…”

Section: Introductionmentioning

confidence: 99%

Analysis of dominant frequency ranges for various modes of EMI generated by switching converters

Jha¹,

Naik

Das

2010

2010 Joint International Conference on Power Electronics, Drives and Energy Systems &Amp; 2010 Power India

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EMI measurement and separation of the Common and the Differential Mode components of noise is necessary to design proper filter to mitigate EMI. It is also important to determine, which component is dominant in a particular frequency range so that the power supply filter may be modified to suit the regulatory limits. Fourier series Analysis is used in this paper to determine the area of dominance of various noise modes obtained from experimental results reported in literature. Index Terms-CommonMode Noise, Differential Mode Noise, Electromagnetic Interference, Mixed Mode Noise.

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The concept of dominant effect in EMC

Cited by 13 publications

References 7 publications

Electromagnetic Radiation Mechanism Analysis and Field Strength Prediction of an Elementary Digital Inverter with Cables

Electromagnetic Radiation Mechanism Analysis and Field Strength Prediction of an Elementary Digital Inverter with Cables

Relating Crosstalk to Plane-Wave Field-to-Wire Coupling

Analysis of dominant frequency ranges for various modes of EMI generated by switching converters

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