Draw Power Out Of Thin Air

 


Radio frequency signals, 5G networks, Bluetooth and  Wi-Fi pollute the air around us. They are wonderful for transmitting data, but recently are being considered as an untapped energy resource.

Scientist have created a new technology that gathers ambient or “waste” RF signals and uses them to power electronic devices.

A nanoscale spin rectifier is being studied. It can change very low power RF signals of less than -20dBm into a useable d/c voltage. The new device is far superior to its predecessors, as they struggled to work efficiently at low power levels.

The new research is coming from the National University of Singapore. It is being led by Professor Yang Hyunsoo. The traditional gigahertz Schottky diode rectifiers haven’t changed much in the last few decades. This is due to the fundamental thermodynamic restrictions found at lower power levels.

The recent upgrades have included improving antenna regulation and impedance matching network. 

This inevitably increases the size of the computer chip required, which holds back miniaturization. 

Yang’s research team has proven that a nanoscale spin rectifier is a small, highly efficient and sensitive way to change RF to DC directly. 

“ Our results demonstrate that SR technology is easy to integrate and scalable, facilitating the development of large scale, SR arrays for various low powered RF and communication applications,” reports Yang.

The future of electronics could be changed forever! 

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