Post-doctoral offer: Cross-correlation of diffuse electromagnetic field in reverberation chambers

Philippe Offres de post-doctorat

Context

The post-doctoral work will take place at Institut d’Electronique et des Télécommunications de Rennes (IETR), Université de Rennes 1. This post-doctoral position is part of the DICOREV Project (DIffuse field cross-COrrelation in REVerberation chambers), which is funded by the ANR Astrid (2018-2021). In addition to IETR, the consortium gathers 3 research labs with leading experts in the fields of noise correlation, wave chaos and reverberation chambers, in INPHYNI (Nice), ESYCOM (Marne-La-Vallée), and Institut Langevin, (Paris).

We exploit the cross-correlation of the diffuse field generated by sources in Mode-stirred reverberation chambers to passively retrieve the impulse response between receiving antennas. We will apply the ambient noise Green’s function retrieval technique to retrieve the impulse response between two receiving antennas. Even though it has led to spectacular results in seismology, the method still remains largely unexplored in electromagnetism. In this project, we aim to pave the way for a new technique to characterize electromagnetic antennas and scattering objects in reverberation chambers.

Description

The extraction of the coupling between antennas will be investigated and demonstrated using different kinds of noise sources ranging from ambient thermal radiations to perfectly controlled sources. This should also provide a great simplification of the setup to measure the mutual coupling matrix of antenna arrays used in MIMO communication and radar imaging systems. The cross-correlation of diffuse field in an electromagnetic reverberation chamber will be explored both experimentally and theoretically. Measurements of the correlation function will be carried out in the reverberation chambers of IETR (Rennes) and ESYCOM (Marne-La-Vallée) in the centimeter- and millimeter-wave ranges. During the post-doc period of 18 months, the candidate will spend several weeks at ESYCOM. The post-doc should start between November and February 2019.

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