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Wigner function based propagation of stochastic field emissions from planar electromagnetic sources

Gradoni, Gabriele; Arnault, Luk R.; Creagh, Stephen C.; Tanner, Gregor; Baharuddin, Mohd Hafiz; Smartt, Christopher; Thomas, David W.P.

Authors

Gabriele Gradoni

Luk R. Arnault

Stephen C. Creagh

Gregor Tanner

Mohd Hafiz Baharuddin

Christopher Smartt

David W.P. Thomas



Abstract

Modelling the electromagnetic radiation from modern digital systems – acting effectively as extended, stochastic sources as part of a complex architecture – is a challenging task. We follow an approach here based on measuring and propagating field-field autocorrelation functions (ACFs) after suitable averaging. From the modelling side, we use the Wigner transform of the ACFs to describe random wave fields in terms of position and direction of propagation variables. An approximate propagator for the components of the radiated magnetic field is constructed for these ACFs based on a linear flow map. Field-field ACFs at aperture level are obtained from scanning measurements of complex sources. Distance and spatial resolution of the scanning plane is less than a wavelength from the source plane to capture the imprint of evanescent waves in the nearfield ACFs. Near-field scanning and efficient near-to-far field propagation is carried out and compared with measurements. Results of this study will be useful to assist far-field predictions, source reconstruction, and emission source microscopy.

Journal Article Type Article
Publication Date Jun 30, 2018
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
Volume 60
Issue 3
Pages 580-588
APA6 Citation Gradoni, G., Arnault, L. R., Creagh, S. C., Tanner, G., Baharuddin, M. H., Smartt, C., & Thomas, D. W. (2018). Wigner function based propagation of stochastic field emissions from planar electromagnetic sources. IEEE Transactions on Electromagnetic Compatibility, 60(3), 580-588. doi:10.1109/TEMC.2017.2738329
DOI https://doi.org/10.1109/TEMC.2017.2738329
Keywords Statistical Electromagnetics, Near-field Scan,Wigner Function, Correlation, Reverberation Chamber
Publisher URL https://ieeexplore.ieee.org/document/8046114/
Related Public URLs http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=15
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 users, 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 components of this work in other works.

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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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