143 citations · 949 across the 36 of their papers we have counts for
17 papers · 1 filter
Upper Bounds on Efficiency of Pixel Antennas
Albert Salmi, Philipp del Hougne, Leo Lahti +1
This letter presents a method to compute fundamental bounds on the total efficiency of pixel antennas. Using semidefinite relaxation, we obtain an upper bound on the optimization p…
Bounds on Shaping Partially Coherent Microwaves with Programmable Scattering Systems
Philipp del Hougne
We derive bounds on manipulating partially coherent microwaves with programmable scattering systems. We first consider the concentration of power from a partially coherent input in…
Experimental Multiport-Network Parameter Estimation for a Dynamic Metasurface Antenna
Jean Tapie, Philipp del Hougne
Most use cases of reconfigurable antennas require an accurate forward model mapping configuration to radiated field (and reflections at feeds). Emerging dynamic metasurface antenna…
Ambiguity-Aware Segmented Estimation of Mutual Coupling in Large RIS: Algorithm and Experimental Validation
Philipp del Hougne
Optimizing a real-life RIS-parametrized wireless channel with a physics-consistent multiport-network model necessitates prior remote estimation of the mutual coupling (MC) between…
Virtual VNA 3.1: Non-Coherent-Detection-Based Non-Reciprocal Scattering Matrix Estimation Leveraging a Tunable Load Network
Philipp del Hougne
We refine the recently introduced "Virtual VNA 3.0" technique to remove the need for coherent detection. The resulting "Virtual VNA 3.1" technique can unambiguously estimate the fu…
Virtual VNA 3.0: Unambiguous Scattering Matrix Estimation for Non-Reciprocal Systems by Leveraging Tunable and Coupled Loads
Philipp del Hougne
We present the "Virtual VNA 3.0" technique for estimating the scattering matrix of a \textit{non-reciprocal}, linear, passive, time-invariant device under test (DUT) with monom…
Virtual VNA: Minimal-Ambiguity Scattering Matrix Estimation with a Fixed Set of "Virtual" Load-Tunable Ports
Philipp del Hougne
We estimate the scattering matrix of an arbitrarily complex linear, passive, time-invariant system with monomodal lumped ports by inputting and outputting waves only via a fixe…
Over-the-Air Emulation of Electronically Adjustable Rician MIMO Channels in a Programmable-Metasurface-Stirred Reverberation Chamber
Ismail Ahmed, Matthieu Davy, Hugo Prod'homme +2
We experimentally investigate the feasibility of evaluating multiple-input multiple-output (MIMO) radio equipment under adjustable Rician fading channel conditions in a programmabl…
Systematic Physics-Compliant Analysis of Over-the-Air Channel Equalization in RIS-Parametrized Wireless Networks-on-Chip
Jean Tapie, Hugo Prod'homme, Mohammadreza F. Imani +1
Wireless networks-on-chip (WNoCs) are an enticing complementary interconnect technology for multi-core chips but face severe resource constraints. Being limited to simple on-off-ke…
Matrix approach for optimal spatio-temporal coherent control of wave scattering
Clément Ferise, Philipp del Hougne, Matthieu Davy
We present and experimentally verify a matrix approach for determining how to optimally sculpt an input wavefront both in space and time for any desired wave-control functionality,…
Covert Scattering Control in Metamaterials with Non-Locally Encoded Hidden Symmetry
Jérôme Sol, Malte Röntgen, Philipp del Hougne
Symmetries and tunability are of fundamental importance in wave scattering control, but symmetries are often obvious upon visual inspection which constitutes a significant vulnerab…
Reflectionless Programmable Signal Routers
Jérôme Sol, Ali Alhulaymi, A. Douglas Stone +1
We demonstrate experimentally that reflectionless scattering modes (RSMs), a generalized version of coherent perfect absorption, can be functionalized to perform reflectionless pro…
Intelligent Meta-Imagers: From Compressed to Learned Sensing
Chloé Saigre-Tardif, Rashid Faqiri, Hanting Zhao +2
Computational meta-imagers synergize metamaterial hardware with advanced signal processing approaches such as compressed sensing. Recent advances in artificial intelligence (AI) ar…
Meta-Programmable Analog Differentiator
Jérôme Sol, David R. Smith, Philipp del Hougne
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…
Coherent wave control in complex media with arbitrary wavefronts
Philipp del Hougne, K. Brahima Yeo, Philippe Besnier +1
Wavefront shaping (WFS) has emerged as powerful tool to control the propagation of diverse wave phenomena (light, sound, microwaves, ...) in disordered matter for applications incl…
Artificial Neural Network with Physical Dynamic Metasurface Layer for Optimal Sensing
Philipp del Hougne, Mohammadreza F. Imani, Aaron V. Diebold +2
We address the fundamental question of how to optimally probe a scene with electromagnetic (EM) radiation to yield a maximum amount of information relevant to a particular task. Ma…
Optimal Communication Channels in a Disordered World with Tamed Randomness
Philipp del Hougne, Mathias Fink, Geoffroy Lerosey
Multi-channel wireless systems have become a standard solution to address our information society's ever-increasing demand for more information transfer. The ultimate bound on the…