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Near-field scanning and propagation of correlated low-frequency radiated emissions

Gradoni, Gabriele; Madenoor Ramapriya, Deepthee; Creagh, Stephen C.; Tanner, Gregor; Baharuddin, Mohd Hafiz; Nasser, Hayan; Smartt, Christopher; Thomas, David W.P.

Authors

Gabriele Gradoni gabriele.gradoni@nottingham.ac.uk

Deepthee Madenoor Ramapriya pmxdm5@nottingham.ac.uk

Stephen C. Creagh stephen.creagh@nottingham.ac.uk

Gregor Tanner gregor.tanner@nottingham.ac.uk

Mohd Hafiz Baharuddin mohd.baharuddin@nottingham.ac.uk

Hayan Nasser HayanNasser@gmail.com

Christopher Smartt chris.smartt@nottingham.ac.uk

David W.P. Thomas dave.thomas@nottingham.ac.uk



Abstract

Electromagnetic radiation from complex printed circuit boards can occur over a broad frequency bandwidth, ranging from hundreds of MHz to tens of GHz. This is becoming a critical issue for assessment of EMC and interoperability as electronic components become more and more integrated. We use emissions from an enclosure with a single-slot aperture and equipped with operating electronics to exemplify and model such sources. Spatial correlation functions obtained from two-probe measurements are used both to characterise the source and to propagate the emissions. We examine emissions in the submicrowave frequency range, where evanescent decay dominates the measured correlation function at the distances measured. We find that an approximate, diffusion-like propagator describes the measured emissions well. A phase-space approach based on Wigner functions is exploited to develop this approximation and to provide enhanced understanding of the emissions.

Journal Article Type Article
Publication Date Dec 20, 2017
Journal IEEE Transactions on Electromagnetic Compatibility
Print ISSN 0018-9375
Electronic ISSN 0018-9375
Publisher Institute of Electrical and Electronics Engineers
Peer Reviewed Peer Reviewed
APA6 Citation Gradoni, G., Madenoor Ramapriya, D., Creagh, S. C., Tanner, G., Baharuddin, M. H., Nasser, H., …Thomas, D. W. (2017). Near-field scanning and propagation of correlated low-frequency radiated emissions. IEEE Transactions on Electromagnetic Compatibility, doi:10.1109/TEMC.2017.2778046
DOI https://doi.org/10.1109/TEMC.2017.2778046
Keywords Correlation, near-field scan, radiated emissions,
statistical electromagnetics, Wigner function
Publisher URL http://ieeexplore.ieee.org/document/8231199/
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information (c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

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Wigner_NearField_Submission.pdf (2.4 Mb)
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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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