Battery Free Phone Uses Energy From Radio Waves
Battery life is one of those things which we could all have more of. There is never a good time for battery to run flat, whether it’s casual use or in a daunting emergency. The utilisation and advancement of mobile phones have increased. Our productivity rose but also our dependency on mobile technology. Also, phones tend to upgrade their features but in most cases the battery seems to be lagging behind in this progression.
Luckily, researchers at the University of Washington have been coming up with a solution for that. They have created a prototype mobile phone which extracts microwatt power from radio and light waves which will mean there is no need for batteries.
“The reason we chose to build a battery-free phone is because phones are one of the most important devices that virtually everyone uses,” said Vamsi Talla, a former electrical engineering doctoral student and Allen School research associate. “Most of us have experienced the situation where our phone battery has died at an inopportune time, such as when we want to make an important phone call.”
These new phones contain very small solar panels called photodiodes. This excludes voice and digital encoding and harnesses the benefits of analog.
The technology can go into one of either two routes, one route would be to carry on working on the technology and eventually create their own phones. This would give people the luxury of never having to recharge their phone but it will have basic call and text functions.
The second route would be to license the technology and the bigger mobile phone companies can integrate their technology into their phones. This would be very useful for emergency calls when the battery has run out.
At the moment, the phone is very basic and is made up of shelf components on a printed circuit board. Talla said that future versions will be more advanced and will include more functionality such as a lower power display and camera.