A universal framework for multiport network analysis of reconfigurable intelligent surfaces

M Nerini, S Shen, H Li, M Di Renzo… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Reconfigurable intelligent surface (RIS) is an emerging paradigm able to control the
propagation environment in wireless systems. Most of the research on RIS has been …

Beyond diagonal reconfigurable intelligent surfaces utilizing graph theory: Modeling, architecture design, and optimization

M Nerini, S Shen, H Li, B Clerckx - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
Recently, beyond diagonal reconfigurable intelligent surface (BD-RIS) has been proposed
to generalize conventional RIS. BD-RIS has a scattering matrix that is not restricted to being …

A novel pixel-based reconfigurable antenna applied in fluid antenna systems with high switching speed

J Zhang, J Rao, Z Li, Z Ming, CY Chiu… - IEEE Open Journal …, 2024 - ieeexplore.ieee.org
Fluid Antenna Systems (FASs) have recently been proposed for enhancing the performance
of wireless communication. FAS have previously exploited mechanical movement or liquids …

Multitarget wireless power transfer system strategy based on metasurface-holography multifocal beams

X Wu, F Hou, Y Li, S Zhao, S Zhang… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
Aiming at the critical problem of wireless power transfer (WPT) for the current growing
number of wireless devices, the multitarget WPT system based on metasurface-holography …

Localized and distributed beyond diagonal reconfigurable intelligent surfaces with lossy interconnections: Modeling and optimization

M Nerini, G Ghiaasi, B Clerckx - arXiv preprint arXiv:2402.05881, 2024 - arxiv.org
Reconfigurable intelligent surface (RIS) is a key technology to control the communication
environment in future wireless networks. Recently, beyond diagonal RIS (BD-RIS) emerged …

A shared-aperture dual-band sub-6 GHz and mmWave reconfigurable intelligent surface with independent operation

J Rao, Y Zhang, S Tang, Z Li, Z Ming… - IEEE Transactions …, 2024 - ieeexplore.ieee.org
A novel dual-band independent reconfigurable intelligent surface (DBI-RIS) design that
combines the functionalities of millimeter-wave (mmWave) and sub-6-GHz bands within a …

A flexible conformal multifunctional time-modulated metasurface for radar characteristics manipulation

G Sun, J Wang, S Xing, D Huang… - IEEE Transactions on …, 2023 - ieeexplore.ieee.org
Time-modulated metasurfaces (TMMs) can achieve extraordinary manipulation of
electromagnetic (EM) waves and hold remarkable potential in future information fields …

A 4× 4 active antenna array with adjustable beam steering

S Verho, VT Nguyen, JY Chung - Sensors, 2023 - mdpi.com
An adjustable 4× 4 antenna array with electrical beam steering and polarization control is
presented. Here, adjustability means the ability to correct the beam steering angle post …

Path Loss and Surface Impedance Models for Surface Wave-Assisted Wireless Communication System

H Liu, WK New, H Xu, Z Chu, KF Tong, KK Wong… - IEEE …, 2024 - ieeexplore.ieee.org
Surface wave-assisted wireless communication systems have recently emerged as a
promising complementary solution for creating a smart radio environment, particularly in the …

Designing antennas with quasi-isotropic radiation patterns using pixel structures

W Zheng, H Li - IEEE Transactions on Antennas and …, 2023 - ieeexplore.ieee.org
In this article, a systematic method for designing antennas with quasi-isotropic patterns is
proposed based on pixel structures and-port networks. Multilayered pixel structures are …