Wigner-Function-Based Propagation of Stochastic Field Emissions From Planar Electromagnetic Sources

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

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Modeling 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 modeling 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 the 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 near-field 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.

Original languageEnglish
JournalIEEE Transactions on Electromagnetic Compatibility
DOIs
Publication statusAccepted/In press - 18 Sep 2017

Fingerprint

Autocorrelation
Field emission
autocorrelation
field emission
electromagnetism
propagation
Scanning
scanning
far fields
near fields
digital systems
evanescent waves
Electromagnetic waves
electromagnetic radiation
Microscopic examination
spatial resolution
apertures
Magnetic fields
microscopy
Wavelength

Keywords

  • Apertures
  • Correlation
  • Correlation
  • Electromagnetics
  • Fourier transforms
  • Magnetic field measurement
  • near-field scan
  • Noise measurement
  • reverberation chamber (RC)
  • statistical electromagnetics
  • Stochastic processes
  • Wigner function (WF)

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Wigner-Function-Based Propagation of Stochastic Field Emissions From Planar Electromagnetic Sources. / Gradoni, Gabriele; Arnaut, Luk R.; Creagh, Stephen C.; Tanner, Gregor; Baharuddin, Mohd Hafiz; Smartt, Christopher; Thomas, David W.P.

In: IEEE Transactions on Electromagnetic Compatibility, 18.09.2017.

Research output: Contribution to journalArticle

Gradoni, Gabriele ; Arnaut, 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. In: IEEE Transactions on Electromagnetic Compatibility. 2017.
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