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Device that turns Wi-Fi signals into electricity created by scientists | This rectifier is designed to operate at extremely low power levels, even below -20 dBm, overcoming the limitations faced by conventional technologies.
Scientists created a technology that harvests energy from ambient radio waves, potentially replacing batteries in small electronic devices.
They have developed a new type of rectifier that can efficiently convert ambient radio frequency (RF) signals, typically considered as “waste” energy, into usable direct current (DC) voltage. “Spin-rectifier technology offers a promising alternative, surpassing current Schottky diode efficiency and sensitivity in the low-power regime,” said Dr. Raghav Sharma, the first author of the paper. They are also exploring series-parallel connections and on-chip interconnects to improve RF power harvesting, with the potential to generate enough voltage to eliminate the need for a DC-to-DC booster.
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