5G: mm-wave signals could power self-charging IoT devices

A 3D-printed antenna could turn high-frequency 5G signals into a wireless faculty rise potentially eliminating the need for batteries in low-faculty IoT artifices according to researchers at Georgia Tech.

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The antenna which the researchers call a mm-wave harvester is almost the size of a playing card and has perceptible circuitry printed on it. It uses a technology named a Rotman lens as a waveguide to centre multiple beams of millimeter-wave electromagnetic radiation used in 5G into a consecutive total.

The technology was antecedently best known as a ingredient of phased-array radar methods allowing it to see targets in multiple directions without physically moving the antenna method. It was invented in the 1960s by US Air Force and MIT researcher Walter Rotman.

’People have attempted to do energy harvesting at high frequencies like 24 or 35GHz precedently’ said Aline Eid a senior researcher a Georgia Techs ATHENA lab in the School of Electrical and Computer Engineering. The shortcoming of the antecedent iterations was it only worked if the lens was oriented straightly toward the transmitter. That made it hard to position correctly and ruled out using it if the artifice it was facultying moved about.