It is reported that the device, which is an antenna, is able to absorb radio waves and turn them into electricity. Progress in metamaterials has made it possible to achieve this.
The researchers say this technology could pave the way for a system in which a source of radio waves can power or charge devices in a room. Scientists have already tested the development. It turned out that the antenna could collect 100 microwatts of power from radio waves about 100 meters from a cell tower.