A Full Time Domain Methodology based on Near Field Time Reversal for Equivalent Source Identification

Sassia Hedia (1) , Bessem Zitouna (1) , Jaleleddine Ben Hadj Slama (1) , Lionel Pichon (2)

1 LATIS - Laboratory of Advanced Technology and Intelligent Systems
2 GeePs - Laboratoire Génie électrique et électronique de Paris

This paper deals with magnetic source characterization in time domain. The basic idea is to solve the inverse problem using the measured near field radiation cartography. In order to ensure the identification procedure, the Time Reversal (TR) technique is used. This procedure allows both the spatial and temporal focusing determination by forcing waves to virtually converge to their initial source. The originality of the proposed methodology is to present a full time domain study of a magnetic source reconstruction. Indeed, this approach is particularly suitable for structures that emit non-sinusoidal radiations such as power electronic systems. First, the Electromagnetic Time Reversal (EMTR) basis are introduced. Then a simulation case study is discussed. Finally, results from an experiment test are presented to verify the proposed methodology. The measured results are in good agreement with the calculated electromagnetic fields. The experimental validation shows that compared to other identification techniques, especially those developed in the frequency domain, the proposed approach is more efficient and simple.

Mots clés: Electromagnetic radiation; Inverse problem; Near field; Time Domain; Time Reversal technique

Domaines: Sciences de l'ingénieur [physics]; Electromagnétisme

Sassia Hedia, Bessem Zitouna, Jaleleddine Ben Hadj Slama, Lionel Pichon. A Full Time Domain Methodology based on Near Field Time Reversal for Equivalent Source Identification. 2018 IEEE International Symposium on Electromagnetic Compatibility and 2018 IEEE Asia-Pacific Symposium on Electromagnetic Compatibility (EMC/APEMC), May 2018, Singapour, Singapore. ⟨10.1109/ISEMC.2018.8393755⟩. ⟨hal-01802658⟩