Wigner function based propagation of stochastic field emissions from planar electromagnetic sources
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 suitabl...
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| Format: | Article |
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Institute of Electrical and Electronics Engineers
2017
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| Online Access: | https://eprints.nottingham.ac.uk/42674/ |
| _version_ | 1848796541913923584 |
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| author | Gradoni, Gabriele Arnault, Luk R. Creagh, Stephen C. Tanner, Gregor Baharuddin, Mohd Hafiz Smartt, Christopher Thomas, David W.P. |
| author_facet | Gradoni, Gabriele Arnault, Luk R. Creagh, Stephen C. Tanner, Gregor Baharuddin, Mohd Hafiz Smartt, Christopher Thomas, David W.P. |
| author_sort | Gradoni, Gabriele |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | 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. |
| first_indexed | 2025-11-14T19:49:38Z |
| format | Article |
| id | nottingham-42674 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T19:49:38Z |
| publishDate | 2017 |
| publisher | Institute of Electrical and Electronics Engineers |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-426742020-05-04T18:45:01Z https://eprints.nottingham.ac.uk/42674/ 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. 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. Institute of Electrical and Electronics Engineers 2017-05-08 Article PeerReviewed Gradoni, Gabriele, Arnault, Luk R., Creagh, Stephen C., Tanner, Gregor, Baharuddin, Mohd Hafiz, Smartt, Christopher and Thomas, David W.P. (2017) Wigner function based propagation of stochastic field emissions from planar electromagnetic sources. IEEE Transactions on Electromagnetic Compatibility . ISSN 0018-9375 (In Press) Statistical Electromagnetics Near-field Scan Wigner Function Correlation Reverberation Chamber |
| spellingShingle | Statistical Electromagnetics Near-field Scan Wigner Function Correlation Reverberation Chamber Gradoni, Gabriele Arnault, Luk R. Creagh, Stephen C. Tanner, Gregor Baharuddin, Mohd Hafiz Smartt, Christopher Thomas, David W.P. Wigner function based propagation of stochastic field emissions from planar electromagnetic sources |
| title | Wigner function based propagation of stochastic
field emissions from planar electromagnetic sources |
| title_full | Wigner function based propagation of stochastic
field emissions from planar electromagnetic sources |
| title_fullStr | Wigner function based propagation of stochastic
field emissions from planar electromagnetic sources |
| title_full_unstemmed | Wigner function based propagation of stochastic
field emissions from planar electromagnetic sources |
| title_short | Wigner function based propagation of stochastic
field emissions from planar electromagnetic sources |
| title_sort | wigner function based propagation of stochastic
field emissions from planar electromagnetic sources |
| topic | Statistical Electromagnetics Near-field Scan Wigner Function Correlation Reverberation Chamber |
| url | https://eprints.nottingham.ac.uk/42674/ |