Researchers in China have developed a reconfigurable intelligent surface (RIS) that harvests energy from enemy radar.

Reconfigurable intelligent surfaces (RIS) are engineered structures comprised of several elements known as 'meta-atoms,' which can reshape and control electromagnetic waves in real-time. These ...

A: Indoor user equipment receiving signals from the base station (BS) via a reconfigurable intelligent surface (RIS) on a building window. B: Hardware architectures at the base station, reconfigurable ...

(a) Unit optimization process with a hybrid continuous-discrete PSO algorithm. The particulars of the yellow and green boxes in the optimization are elaborated in (b) and (c), respectively. (b) The ...