A review on through-wall communications: Wall characterization, applications, technologies, and prospects

H Jamshidi-Zarmehri, A Akbari, M Labadlia… - IEEE …, 2023 - ieeexplore.ieee.org
This paper underscores the paramount significance of through-wall communications by
providing a comprehensive exploration of pivotal aspects like wall characterization, relevant …

Time‐Space‐Coding Radiation‐Stealth Metasurface with Amplitude‐Phase Co‐Modulation

Y Mu, D **a, J Han, X Ma, X Wang… - Advanced Functional …, 2024 - Wiley Online Library
The integrated design of radiation and stealth holds significant importance for radar
communication and camouflage. Currently, radar systems primarily rely on radomes for off …

Phase-gradient Huygens' metasurface coatings for dynamic beamforming in linear antennas

S Vellucci, M Longhi, A Monti, M Barbuto… - … on Antennas and …, 2023 - ieeexplore.ieee.org
The beamforming capabilities of conformal cylindrical Huygens metasurface (HMS) coatings
for linear antennas are assessed. It is shown that by engineering the phase-gradient profile …

Broadband terahertz metalenses based on printed circuit board fabrication

C Qi, X He, B Ren, AMH Wong - Advanced Optical Materials, 2024 - Wiley Online Library
Metalenses have provided a good solution to the bulkiness of conventional refractive lenses.
Due to the subwavelength feature sizes of the metalens structure, the increasing fabrication …

Polarization-independent achromatic Huygens' metalens with large numerical aperture and broad bandwidth

X He, C Qi, S Lei, AMH Wong - Nanophotonics, 2023 - degruyter.com
Achromatic lenses, which have the same focal length regardless of the illumination
frequency, find strong applications in imaging, sensing, and communication systems …

Fully analytical design of electromagnetic transmissive metagratings for highly efficient extreme-angle beam refraction and reflection

Z Tan, J Yi, B Ratni, SN Burokur - Physical Review Applied, 2024 - APS
Metagratings are promising candidates for extreme-angle beam manipulation, due to two
main features, namely, the ability to maintain very high efficiency in beam manipulation at …

Reconfigurable near-field focusing reflector based on superoscillation mechanism

M Lin, J Li, D Zhang, B Ratni, J Yi, P Qi… - IEEE Antennas and …, 2023 - ieeexplore.ieee.org
Superoscillation is an extraordinary phenomenon capable of generating small-size focusing
spots, which can be used for super-resolution focusing and imaging. Herein, we elaborate …

Scattering gain loss bounds for discretized reconfigurable intelligent surfaces

L Stefanini, D Ramaccia, A Toscano… - 2023 17th European …, 2023 - ieeexplore.ieee.org
In this contribution, we study how the unavoidable discretization process affects the
scattering gain of a Reconfigurable Intelligent Surface (RIS). We characterize the …

Experimental demonstration of a dual-input/dual-output reflective impedance metasurface

JL Keyrouz, VG Ataloglou, GV Eleftheriades - Applied Physics Letters, 2023 - pubs.aip.org
This paper presents the experimental demonstration of a dual-input/dual-output reflective
impedance metasurface. The design of the metasurface relies on the Method of Moments …

A Survey On Federated Learning for Reconfigurable Intelligent Metasurfaces-Aided Wireless Networks

SK Das, B Champagne… - IEEE Open Journal of …, 2024 - ieeexplore.ieee.org
Wireless networks are increasingly relying on machine learning (ML) paradigms to provide
various services at the user level. Yet, it remains impractical for users to offload their …