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

Gradoni, Gabriele and Madenoor Ramapriya, Deepthee and Creagh, Stephen C. and Tanner, Gregor and Baharuddin, Mohd Hafiz and Nasser, Hayan and Smartt, Christopher and Thomas, David W.P. (2017) Near-field scanning and propagation of correlated low-frequency radiated emissions. IEEE Transactions on Electromagnetic Compatibility . ISSN 0018-9375

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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.

Item Type: Article
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.
Keywords: Correlation, near-field scan, radiated emissions, statistical electromagnetics, Wigner function
Schools/Departments: University of Nottingham, UK > Faculty of Engineering > Department of Electrical and Electronic Engineering
University of Nottingham, UK > Faculty of Science > School of Mathematical Sciences
Identification Number: https://doi.org/10.1109/TEMC.2017.2778046
Depositing User: Gradoni, Gabriele
Date Deposited: 19 Jan 2018 11:38
Last Modified: 26 Jun 2018 12:43
URI: http://eprints.nottingham.ac.uk/id/eprint/49194

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