Modeling of Magnetic Near-Field Radiated by Electronic Devices Disturbed by Transient Signals with Complex Form

Liu, Yang; Ravelo, Blaise; Fernandez-Lopez, Priscilla

doi:10.5539/apr.v4n1p3

Cited by 11 publications

(20 citation statements)

References 31 publications

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“…The NF measurement and calibration were performed at the IRSEEM laboratory under the condition tests as described in [15,16]. After the application of PWS computation, the H-NF maps in the arbitrary chosen vertical surfaces along x-and y-axes presented in Fig.…”

Section: Experimental Analyses With Active Pcb Nf Emission In the Frementioning

confidence: 99%

“…5(b). Those maps were realized with the NF scanning technique by using a metallic dipole loop as reported in [15,16].…”

Section: Experimental Analyses With Active Pcb Nf Emission In the Frementioning

confidence: 99%

“…However, on the one hand, the popular full wave simulation tools as CST [18], EMPro [19], HFSS [20], EMCoS [21] and FEKO [22] which are especially dedicated to the EM computations are not appropriate to the PCBs with typically complex structures and containing several integrated circuits. On the other hand, the EM NF scanning techniques [5,6,[14][15][16] are still very expensive and time consuming. Furthermore, the associated NF radiation processing methods are hardly practical for predicting EM emission in the 3D zones located nearby the radiating devices [23].…”

Section: Introductionmentioning

confidence: 99%

“…A NF imaging technique offering the possibility to visualize and extract the common-mode currents from near transmission line discontinuities was presented in [13]. To realize a high resolution 2D measured fields, those techniques require an electromechanical automated test bench as developed in [5,6,14,15] for the EM NF scanning in a planar surface located in the proximity of the radiating devices. Nevertheless, those techniques are still limited to the regular shape of scanning surface.…”

Section: Introductionmentioning

confidence: 99%

“…To overcome these technical limits, behavioral models of EM NF based on the equivalent elementary EM dipole array were suggested [15,17]. One of the most popular EM NF emission model is based on the inverse method whose parameters are extracted from the planar measured data.…”

Section: Introductionmentioning

confidence: 99%

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Radiated Near-Field Emission Extraction on 3d Curvilinear Surfaces From 2d Data

Ravelo¹

2015

PIER M

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Abstract-This paper deals with a fast and simple computational method of 3D near-field (NF) radiation from 2D planar frequency-and time-dependent data. The established calculation method can be used to predict the electromagnetic (EM) emission from various types of electronic devices. The proposed method is originally applicable to the computation of the EM NF along the arbitrary shaped curvilinear 3D surface of multi-shape objects. The EM computation consists in the application of the planar NF-to-NF transform using plane wave spectrum. The relevance of the established method is verified with three different validation tests of analytical and practical demonstrations. The first validation is based on the analytical NF radiation from set of elementary dipoles excited by a harmonic signal. The second validation test is based on the experimented data from a hybrid active printed circuit boards (PCBs) in the frequency domain. The last validation test is performed with the measured NF data from a microstrip planar circuit in the time-domain. For all the different test cases, the plots of EM NF on arbitrary curvilinear surfaces are presented. Applications with 3D visualization or holographic surface with arbitrary geometry of EM radiation from planar data in both frequency-and time-domains confirm the effectiveness of the proposed method to predict the EM NF emission from complex PCBs. The developed 2D-to-3D computational method is particularly useful for radiated EM compatibility engineering.

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Section: Experimental Analyses With Active Pcb Nf Emission In the Frementioning

confidence: 99%

“…5(b). Those maps were realized with the NF scanning technique by using a metallic dipole loop as reported in [15,16].…”

Section: Experimental Analyses With Active Pcb Nf Emission In the Frementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Radiated Near-Field Emission Extraction on 3d Curvilinear Surfaces From 2d Data

Ravelo¹

2015

PIER M

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Non‐unicity of the electric near‐field planar emission model with dipole array

Ravelo

2016

IET Microwaves, Antennas & Propagation

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This study deals with the behavioural modelling of the planar electric‐ (E‐) near‐field (NF) emission from electronic printed circuit boards. The methodology indicating how to synthesise the model from the given scanned E‐NF maps in the observation plane of interest is established. The modelled radiation source is built with exclusively E‐dipole array whose components are determined by the inverse method. After computational routine algorithm Matlab implementation, the proposed model was validated with various demonstrators. Relevant verifications were performed at different operating frequencies with the E‐NF emission from analytical radiation, measurement scanning with active complex RF PCB and full wave simulation with microwave passive microstrip structure. It was shown that the model enables to reproduce the equivalent source with relative error vector magnitude accuracy less than 3%. The error analyses in function of the distance between the observation plane and the radiating PCB were proposed. Moreover, the non‐unicity and limit of the model with the E‐field emission prediction from different E‐field radiated data defined in the scanning observation surface plane positions from the radiating circuit. The developed model can be potentially used to lower the cost of EM compatibility engineering during the electronic PCB design phase.

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Time domain inverse method based on the near field technique to solve electromagnetic interference problems: application to an AC/DC flyback converter

Zitouna

Slama

2018

IET Power Electronics

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This study presents a time domain modelling method for sources of electromagnetic disturbance. For the identification of an equivalent model, the proposed method is based on the synchronised temporal measurements of the magnetic near field above a power electronic system. To determine the parameters of the model, the proposed methodology is combined with an optimisation method based on the genetic algorithms. Unlike the classical approaches developed in the frequency domain, the proposed method allows finding a valid equivalent model for all radiation frequencies of measured time signals. It also enables knowing the phase shift in time between the radiating sources. The proposed method is applied in order to find the equivalent radiating sources of an AC/DC flyback converter. The accuracy and precision of the proposed method are validated by the good agreement between the measured cartography of the magnetic near field and that calculated using the parameters of the developed model. Finally, the latter's parameters are used to predict the cartography of other components of the magnetic field, which will be compared with the measured cartography. The superposition of the results confirms that the identified equivalent sources can represent real sources in the studied structure.

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Modeling of Magnetic Near-Field Radiated by Electronic Devices Disturbed by Transient Signals with Complex Form

Cited by 11 publications

References 31 publications

Radiated Near-Field Emission Extraction on 3d Curvilinear Surfaces From 2d Data

Radiated Near-Field Emission Extraction on 3d Curvilinear Surfaces From 2d Data

Non‐unicity of the electric near‐field planar emission model with dipole array

Time domain inverse method based on the near field technique to solve electromagnetic interference problems: application to an AC/DC flyback converter

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