Surrogate Modeling-Based Acceleration of Multi-Harmonic Near-Field Measurements

Urbonas, Jonas; Votsi, Haris; Shakouri, Alex; Aaen, Peter H.

doi:10.1109/arftg49670.2021.9425147

Cited by 1 publication

(3 citation statements)

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“…• The first limit definition, k1, is a simple constant (8). It provides the largest reduction of the number of measurement points but with a price of inaccurate field reconstruction around the emission map maxima.…”

Section: Selection Criterionmentioning

confidence: 99%

“…Several approaches have been proposed for electromagnetic applications [3] [4] [5]. For a near-field scanning above a PCB, the approach described in [6] [7] [8], dedicated to adaptive sampling of planar surface, ensures a significant reduction of the number of samples. However, the massive use of Kriging model and the random sampling lead to a significant increase of the time due to the algorithm computation and the probe movements.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, all these approaches [6] [7] [3] [4] [5] [8] [1] [9] were applied to reduce the acquisition time of monofrequency near-field maps. In a practical EMC investigation campaign, where electronic devices produce wide band electromagnetic emission, a mono-frequency scanning can be insufficient since one measurement frequency has to be selected carefully.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Efficiency of Sequential Spatial Adaptive Sampling Algorithm to Accelerate Multifrequency Near-Field Scanning Measurement

Serpaud¹,

Boyer

Dhia

et al. 2022

IEEE Trans. Electromagn. Compat.

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Near-field scanning is an attractive method to diagnose conducted and radiated emission issues at board or circuit level. However, the long measurement time to scan a dense electronic board at numerous frequencies is a major drawback that limits its growth in industry. To overcome this problem, methods to accelerate the measurement, such as the sequential spatial adaptive sampling algorithm, must be found. This method was developed to speed up a near-field scans measured in frequency domain at only one frequency. The proposed paper capitalizes on this method to extend its principle and demonstrate its effectiveness for near-field scans measured at multiple frequencies. Several measurement strategies and frequency segmentation approaches are compared. A definition of the best strategy and approach to allow a time reduction factor of almost one order magnitude compared to the full sampling measurement has been proposed. Keywords -Electromagnetic compatibility (EMC), near-field scanning (NFS), adaptive sampling, time optimization.* The speed motion of the probe was fixed at Speed = 20 cm/s (probe acceleration and deceleration phases are not taken into account). ** The time to capture all frequency range for one point is fixed at 2.25s.

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Section: Selection Criterionmentioning

confidence: 99%