Propagation methods for stochastic field emissions and source reconstruction

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Modelling of complex wave sources is an important topic in several scientific and engineering communities. In the context of electromagnetic compatibility, the complexity of field emissions from extended and broadband planar sources allows for the use of statistical methods to characterise the development of far field interferences from near field scanning at planes parallel to the source. We review and describe recent progresses of an analogue near-to-far field operator for statistical sources, whose exact version is directly related to Green's function formalism. This operator exploits directional and positional informations encoded in the two-point correlation function through a phasespace representation (Wigner function), at which the propagation can be approximated by ray tracing a density of waves and includes diffusion of evanescent waves - important at planes close to the source. This formalism is used to propagate the correlation function from two-probe near-field scanning measurements in free-space, and can be extended to propagation within arbitrary cavities. After pointing out the equivalence between propagating voltage-voltage and field-field correlations, we compare exact and approximated correlation matrices propagated from a partially coherent source, which results in good agreement. Finally, we present an impedance based source reconstruction algorithm that uses the significant eigenvalues of the voltage-voltage correlations obtained from near-field scanning to estimate the current-current correlation across the surface of the source. Results are relevant for the emission source microscopy of statistical sources.

Original languageEnglish
Title of host publication2017 International Symposium on Electromagnetic Compatibility - EMC EUROPE 2017, EMC Europe 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781538606896
DOIs
Publication statusPublished - 2 Nov 2017
Externally publishedYes
Event2017 International Symposium on Electromagnetic Compatibility - EMC EUROPE, EMC Europe 2017 - Angers, France
Duration: 4 Sep 20178 Sep 2017

Other

Other2017 International Symposium on Electromagnetic Compatibility - EMC EUROPE, EMC Europe 2017
CountryFrance
CityAngers
Period4/9/178/9/17

Fingerprint

Field emission
field emission
propagation
Electric potential
Scanning
near fields
Electromagnetic compatibility
Ray tracing
Green's function
electric potential
Mathematical operators
Statistical methods
Microscopic examination
scanning
far fields
formalism
coherent sources
electromagnetic compatibility
operators
evanescent waves

ASJC Scopus subject areas

  • Instrumentation
  • Radiation
  • Computer Networks and Communications

Cite this

Gradoni, G., Ramapriya, D. M., Creagh, S. C., Tanner, G., Baharuddin, M. H., Smartt, C., & Thomas, D. W. P. (2017). Propagation methods for stochastic field emissions and source reconstruction. In 2017 International Symposium on Electromagnetic Compatibility - EMC EUROPE 2017, EMC Europe 2017 [8094693] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EMCEurope.2017.8094693

Propagation methods for stochastic field emissions and source reconstruction. / Gradoni, Gabriele; Ramapriya, Deepthee Madenoor; Creagh, Stephen C.; Tanner, Gregor; Baharuddin, Mohd Hafiz; Smartt, Christopher; Thomas, David W.P.

2017 International Symposium on Electromagnetic Compatibility - EMC EUROPE 2017, EMC Europe 2017. Institute of Electrical and Electronics Engineers Inc., 2017. 8094693.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Gradoni, G, Ramapriya, DM, Creagh, SC, Tanner, G, Baharuddin, MH, Smartt, C & Thomas, DWP 2017, Propagation methods for stochastic field emissions and source reconstruction. in 2017 International Symposium on Electromagnetic Compatibility - EMC EUROPE 2017, EMC Europe 2017., 8094693, Institute of Electrical and Electronics Engineers Inc., 2017 International Symposium on Electromagnetic Compatibility - EMC EUROPE, EMC Europe 2017, Angers, France, 4/9/17. https://doi.org/10.1109/EMCEurope.2017.8094693
Gradoni G, Ramapriya DM, Creagh SC, Tanner G, Baharuddin MH, Smartt C et al. Propagation methods for stochastic field emissions and source reconstruction. In 2017 International Symposium on Electromagnetic Compatibility - EMC EUROPE 2017, EMC Europe 2017. Institute of Electrical and Electronics Engineers Inc. 2017. 8094693 https://doi.org/10.1109/EMCEurope.2017.8094693
Gradoni, Gabriele ; Ramapriya, Deepthee Madenoor ; Creagh, Stephen C. ; Tanner, Gregor ; Baharuddin, Mohd Hafiz ; Smartt, Christopher ; Thomas, David W.P. / Propagation methods for stochastic field emissions and source reconstruction. 2017 International Symposium on Electromagnetic Compatibility - EMC EUROPE 2017, EMC Europe 2017. Institute of Electrical and Electronics Engineers Inc., 2017.
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