Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Sol, Jerome"'
The scattering of waves in a complex medium is perturbed by polarizability changes or motion of embedded targets. These perturbations could serve as perfectly non-invasive guidestars for focusing on the targets. In this Letter, we theoretically deriv
Externí odkaz:
http://arxiv.org/abs/2401.15415
The reconfigurability of radio environments with programmable metasurfaces is considered a key feature of next-generation wireless networks. Identifying suitable metasurface configurations for desired wireless functionalities requires a precise setti
Externí odkaz:
http://arxiv.org/abs/2308.02349
Symmetries and tunability are of fundamental importance in wave scattering control, but symmetries are often obvious upon visual inspection which constitutes a significant vulnerability of metamaterial wave devices to reverse-engineering risks. Here,
Externí odkaz:
http://arxiv.org/abs/2305.00906
Autor:
Charlo, Corentin, Méric, Stéphane, Sarrazin, François, Richalot, Elodie, Sol, Jérôme, Besnier, Philippe
Reverberation chambers (RCs) were recently reported as a low-cost alternative to anechoic chambers (ACs) to perform radar cross-section (RCS) pattern measurements. The method consists of using transmitting and receiving antennas pointing towards a ta
Externí odkaz:
http://arxiv.org/abs/2303.08751
Autor:
Rabault, Antonin, Magoarou, Luc Le, Sol, Jérôme, Alexandropoulos, George C., Shlezinger, Nir, Poor, H. Vincent, del Hougne, Philipp
We analytically derive from first physical principles the functional dependence of wireless channels on the RIS configuration for generic (i.e., potentially complex-scattering) RIS-parametrized radio environments. The wireless channel is a linear inp
Externí odkaz:
http://arxiv.org/abs/2302.04993
Publikováno v:
Sci. Adv. 9, eadf0323 (2023)
We demonstrate experimentally that reflectionless scattering modes (RSMs), a generalized version of coherent perfect absorption, can be functionalized to perform reflectionless programmable signal routing. We achieve versatile programmability both in
Externí odkaz:
http://arxiv.org/abs/2209.11991
Publikováno v:
Nat. Commun. 13, 1713 (2022)
We show experimentally that the fundamental ingredient of wave-based signal differentiation, namely zeros of the scattering matrix that lie exactly on the real axis, can be imposed at will and in situ by purposefully perturbing an overmoded random sc
Externí odkaz:
http://arxiv.org/abs/2108.06178
Autor:
Reis, Ariston, Sarrazin, Francois, Pouliguen, Philippe, Sol, Jérôme, Besnier, Philippe, Richalot, Elodie
Publikováno v:
European Conference on Antennas and Propagation, Mar 2020, Copenhagen, Denmark
This paper presents the evaluation of the Radar Cross Section (RCS) of a metallic object by measurements accomplished within the diffuse-field environment produced by a Reverberation Chamber (RC). The method is based on the extraction of the ballisti
Externí odkaz:
http://arxiv.org/abs/2004.06943
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An original experimental method for determining the empirical probability distribution function (PDF) of the quality factor (Q) of a mode-stirred reverberation chamber is presented. Spectral averaging of S-parameters across a relatively narrow freque
Externí odkaz:
http://arxiv.org/abs/1401.4030