Human activity monitoring is an exciting research area to assist independent living among
disabled and elderly population. Various techniques have been proposed to recognise …

This article presents a multibit reconfigurable intelligent surface (RIS) with a high phase
resolution, capable of beam-steering in the azimuthal plane at sub-6 GHz. Field trials in …

To have uninterrupted wireless connectivity, higher throughput, and latency rate down to
nanoseconds; future networks will rely heavily on higher frequency bands, yet these signals …

With the advantage of programmable electromagnetic properties, Reconfigurable Intelligent
Surfaces (RISs) have drawn wide attention from both industry and academia. RIS-assisted …

This work explores the performance of a 1-bit dual-linear polarised varactor-based
metasurface design at sub-6 GHz. A modified particle swarm optimisation algorithm was …

Implementation of reconfigurable metasurfaces demands a complex structure. The design
methodology for metasurface elements based on PIN diodes requires targeted optimisation …

Abstract Superfícies Inteligentes Reconfiguráveis (RISs) são estruturas que podem ser
programadas dinamicamente para controlar a reflexão de ondas eletromagnéticas. Esta …

The development of the next generation of wireless communications (6G) is already
underway, with an expected adoption throughout the next decade. This new generation will …

This paper presents a multi-bit reconfigurable intelligent surface with high-resolution beam
steering capability in the azimuthal plane for deployment at sub-6 Gigahertz (GHz) band …