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Power/Performance Bits: May 25
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Le réseau 5G pourrait-il remplacer les batteries des objets connectés un jour ?
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Christopher Moore, Georgia Tech Connected devices may one day use the energy created by technology from Georgia Tech researchers instead of batteries.
Most already know of the promise of 5G wireless technology to boost the speed and transfer of mobile data. Now researchers at the Georgia Institute of Technology have discovered another use for the technology turning the over-capacity of 5G networks into “a wireless power grid” for the Internet of Things (IoT).
Researchers have developed a special antenna system that for the first time can harvest millimeter radio waves in the 28-GHz band, they said. The antenna called a flexible Rotman lens-based rectifying antenna, or rectenna and the related system has some particular modifications that make it suited to this purpose, they said.
Researchers have uncovered an innovative way to tap into the over-capacity of 5G networks, turning them into “a wireless power grid” for powering Internet of Things (IoT) devices that today need batteries to operate.
The researchers have developed a flexible Rotman lens-based rectifying antenna (rectenna) system capable, for the first time, of millimeter-wave harvesting in the 28-GHz band. The Rotman lens is key for beamforming networks and is frequently used in radar surveillance systems to see targets in multiple directions without physically moving the antenna system.
To harvest enough power to supply low-power devices at long ranges, however, large aperture antennas are necessary. The problem with large antennas is they have a narrowing field of view. This limitation prevents their operation if the antenna is widely dispersed from a 5G base station.