Programmable metasurfaces can endow complex scattering environments with reconfigurability. Here, we make use of these configurational degrees of freedom to retrieve the impulse response between two passive antennas via cross-correlation techniques. An ensemble of stirred chaotic wave fields in a reverberation chamber (RC) can play the role of thermal noise in passive Green's function retrieval. Instead of using a conventional mechanical mode stirrer, we generate the ensemble of RC configurations with random configurations of a programmable metasurface. We adapt the data processing of the diffuse field cross-correlation technique to this stirring mechanism, which is, given the size of the RC, nominally inefficient, and we investigate the convergence of the cross-correlated signals toward the impulse response. Finally, we apply our scheme to phaseless imaging in complex propagation environments, with potential applications in indoor context-awareness.
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8 March 2021
Research Article|
March 08 2021
Diffuse field cross-correlation in a programmable-metasurface-stirred reverberation chamber
Special Collection:
Metastructures: From Physics to Application
Philipp del Hougne
;
Philipp del Hougne
a)
1
Univ Rennes, INSA Rennes, CNRS, IETR-UMR 6164
, F-35000 Rennes, France
2
Université Côte d'Azur, CNRS, Institut de Physique de Nice-UMR 7010
, 06108 Nice, France
a)Author to whom correspondence should be addressed: philipp.delhougne@gmail.com and matthieu.davy@univ-rennes1.fr
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Jérôme Sol;
Jérôme Sol
1
Univ Rennes, INSA Rennes, CNRS, IETR-UMR 6164
, F-35000 Rennes, France
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Fabrice Mortessagne
;
Fabrice Mortessagne
2
Université Côte d'Azur, CNRS, Institut de Physique de Nice-UMR 7010
, 06108 Nice, France
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Ulrich Kuhl;
Ulrich Kuhl
2
Université Côte d'Azur, CNRS, Institut de Physique de Nice-UMR 7010
, 06108 Nice, France
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Olivier Legrand;
Olivier Legrand
2
Université Côte d'Azur, CNRS, Institut de Physique de Nice-UMR 7010
, 06108 Nice, France
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Philippe Besnier;
Philippe Besnier
1
Univ Rennes, INSA Rennes, CNRS, IETR-UMR 6164
, F-35000 Rennes, France
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Matthieu Davy
Matthieu Davy
a)
1
Univ Rennes, INSA Rennes, CNRS, IETR-UMR 6164
, F-35000 Rennes, France
a)Author to whom correspondence should be addressed: philipp.delhougne@gmail.com and matthieu.davy@univ-rennes1.fr
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a)Author to whom correspondence should be addressed: philipp.delhougne@gmail.com and matthieu.davy@univ-rennes1.fr
Note: This Paper is part of the APL Special Collection on Metastructures: From Physics to Applications.
Appl. Phys. Lett. 118, 104101 (2021)
Article history
Received:
December 04 2020
Accepted:
February 15 2021
Citation
Philipp del Hougne, Jérôme Sol, Fabrice Mortessagne, Ulrich Kuhl, Olivier Legrand, Philippe Besnier, Matthieu Davy; Diffuse field cross-correlation in a programmable-metasurface-stirred reverberation chamber. Appl. Phys. Lett. 8 March 2021; 118 (10): 104101. https://doi.org/10.1063/5.0039596
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