Time-domain near-field/near-field transform with PWS operations

Ravelo, Blaise; Liu, Y.; Slama, Jaleleddine Ben Hadj

doi:10.1051/epjap/2011100447

Cited by 15 publications

(17 citation statements)

References 21 publications

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“…During the computation, the sampling period was 0.2 ns. It is noteworthy that the presented time-domain data were extracted from the 2D data measured in the frequency domain as proposed in [26].…”

Section: Applications Of the Nf-nf Methods With Passive Microstrip Cirmentioning

confidence: 99%

“…To face this difficulty, NF-to-NF extraction and post-processing methods were proposed [4,[24][25][26]. However, the approach introduced in [4] is established from the frequency domain far-field data applied to the analytical processing the multipole identification of spherical Hankel function.…”

Section: Introductionmentioning

confidence: 99%

“…But such a method is particularly time consuming and cannot predict the EM field in the arbitrary zone close to the culprit radiating devices. By using the plane wave spectrum (PWS) transform, fast and accurate EM computational methods for the NF processing are developed in [25,26]. So far, the PWS theory was only used for the planar EM NF treatment and to predict the field cartographies.…”

Section: Introductionmentioning

confidence: 99%

“…So far, the PWS theory was only used for the planar EM NF treatment and to predict the field cartographies. The transposition of the NF-NF transform in the time domain for the radiated EMC analysis is addressed in [26].…”

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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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: Applications Of the Nf-nf Methods With Passive Microstrip Cirmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Ravelo¹

2015

PIER M

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“…Moreover, modeling methods of the EM NF radiations were proposed, first, in frequency-domain [18][19][20][21][22][23] and also, for the analysis of the EM-wave in time-domain [24][25][26]. Nevertheless, the modeling and simulation methods require more reliable practical investigation from efficient experimentations.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Power Electronic Transistor Parameters Influence to the Near-Field Radiation for the Emc Applications

Manjombe¹,

Azzouz²,

Baudry³

et al. 2011

PIER M

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Abstract-With the increases of the module integration density and complexity in electrical and power electronic systems, serious problems related to electromagnetic interference (EMI) and electromagnetic compatibility (EMC) can occur. For the safety, these disturbing effects must be considered during the electronic equipment design process. One of the concerns on EMC problems is induced by unintentional near-field (NF) radiations. The modeling and measurement of EM NF radiations is one of the bottlenecks which must be overcome by electronic engineers. To predict the unwanted different misbehaviors caused by the EM radiation, NF test benches for the reconstitution of scanning maps at some millimeters of electrical/electronic circuits under test were developed at the IRSEEM laboratory. Due to the difficulty of the design with commercial simulators, the prediction of EM NF emitted by active electronic systems which are usually based on the use of transistors necessitates more relevant and reliable analysis techniques. For this reason, the main focus of this article is on the experimental analysis of EM NF radiated by an MOSFET transistor with changing electrical parameters. Descriptions of the experimental test bench for the EM map scan of transistors radiation are provided. This experimental setup allows not only to detect the EM NF emission but also to analyze the influence of the excitation signal parameters as the cyclic ratio. It is found that the magnetic radiation is maximal when the cyclic ratio is close to 50%. In the future, the technique introduced in this article can be used to evaluate the EM radiation of embedded electronic/electrical devices in order to improve the safety and security of electronic systems.

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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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Time-domain near-field/near-field transform with PWS operations

Cited by 15 publications

References 21 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

Experimental Investigation on the Power Electronic Transistor Parameters Influence to the Near-Field Radiation for the Emc Applications

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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