Identifying Interference From Multiple Noise Sources Using Only Magnetic Near Fields

Pan, Jianguo; Gao, Xu; Fan, Jun

doi:10.1109/temc.2020.3020049

Cited by 9 publications

(2 citation statements)

References 15 publications

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“…Moreover, the usage of FDM inherits its shortcomings in terms of numerical errors [21]. The source reconstruction algorithm in [22] based on the Finite Element Method (FEM) has also been used to predict the far field in the context of EMI and identifying the location of interference from multiple source [23] based on the estimation of s-parameters. The success of these methods is based on the phase measurement where recently promising low cost alternatives are proposed [24], [25].…”

Section: Introductionmentioning

confidence: 99%

A Single-shot Field Measurement Procedure for Radiated Emissions using Equivalent Surface Dipoles

Binda¹,

Mitharwal²,

Singh³

2021

Preprint

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The new generation of communication devices operating in higher frequency bands is constantly pushing the complexity of field measurements for electromagnetic compliance and the design of field probes. These compliance are to be met for both electric and magnetic fields which demands repeating the same measurement procedure using different probes. The main objective of this paper is to provide a procedure which provides both fields in a single shot measurement using a single probe based on source reconstruction algorithm. The algorithm is based on a novel way of placing single dipole per point tangentially to a fictitious surface based on surface equivalence theorem instead of three orthogonal dipoles per point in earlier works. The control of overall accuracy by varying dipole and measurement point density is also demonstrated. We also prove the existence, uniqueness and the error bounds involved in the inverse problem rigorously. The numerical results corroborates the effectiveness of the proposed procedure in obtaining accurate fields and also locating the regions of the Device Under Test responsible for overshooting the interference limits.

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Section: Introductionmentioning

confidence: 99%

A Single-shot Field Measurement Procedure for Radiated Emissions using Equivalent Surface Dipoles

Binda¹,

Mitharwal²,

Singh³

2021

Preprint

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“…The SWE method is very efficient and accurate [2, 3], thus it could be iteratively applied using an optimisation algorithm or, alternatively, using an artificial intelligence process to identify the best tray settings and the best rack assembly that minimises the overall rack radiation. The work described in this paper investigates the possibility of applying the SWE method, differently from its typical application for far‐field (FF) reconstruction from near‐field (NF) measurements of antennas or large arrays [4–6], in order to have an alternative and more accurate way, with respect to other techniques [7, 8], to predict EMI radiation. The SWE technique is applied to the tangential electric field (E‐field) detected on a surface surrounding the tray under test to evaluate the spherical wave coefficients associated to each source [1–4].…”

Section: Introductionmentioning

confidence: 99%