An Iterative Approach for EMI Source Reconstruction Based on Phaseless and Single-Plane Near-Field Scanning

Electromagnetic interference (EMI) source reconstruction typically requires accurate measurements of both near-field magnitude and phase information. In some cases, an accurate phase measurement may not be practically feasible. A phase-retrieval method based on phaseless and single-plane near-field...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on electromagnetic compatibility 2018-08, Vol.60 (4), p.937-944
Main Authors: Shu, Yu-Fei, Wei, Xing-Chang, Yang, Rui, Liu, En-Xiao
Format: Article
Language:English
Subjects:
Electromagnetic interference
Electromagnetic interference (EMI)
equivalent dipole model
Interpolation
Mathematical model
Measurement errors
near-field scanning
Phase measurement
phase-retrieval
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Electromagnetic interference (EMI) source reconstruction typically requires accurate measurements of both near-field magnitude and phase information. In some cases, an accurate phase measurement may not be practically feasible. A phase-retrieval method based on phaseless and single-plane near-field scanning is presented in this paper. By using an interpolation technique, the original data of field magnitude used for reconstruction can be divided into two groups: the sampling and interpolation groups. Subsequently, iteration algorithm together with the singular value decomposition method is employed to reconstruct the equivalent dipole model of the EMI source. Both numerical example and measurement example are given to verify the effectiveness of the proposed algorithm. The major advantage of the proposed method is that it can save a half scanning time and still produces a valid EMI source model. It also shows an ability to reduce some measurement errors.
ISSN:0018-9375
1558-187X
DOI:10.1109/TEMC.2017.2756902