Cellphone Harvests Power From Ambient Radio Signals And Light

A new cellphone has been created by team of computer scientists and electrical engineers at the University of Washington. The battery-free phone harvests power from either ambient radio signals or light.


(Battery-Free cellphone video)

We present the first battery-free cellphone design that consumes only a few micro-watts of power. Our design can sense speech, actuate the earphones, and switch between uplink and downlink communications, all in real time.

Our system optimizes transmission and reception of speech while simultaneously harvesting power which enables the battery-free cellphone to operate continuously. The battery-free device prototype is built using commercial-off-the-shelf components on a printed circuit board. It can operate on power that is harvested from RF signals transmitted by a basestation 31 feet (9.4 m) away.

Further, using power harvested from ambient light with tiny photodiodes, we show that our device can communicate with a basestation that is 50 feet (15.2 m) away.

Finally, we perform the first Skype call using a battery-free phone over a cellular network, via our custom bridged basestation. This we believe is a major leap in the capability of battery-free devices and a step towards a fully functional battery-free cellphone.

The idea that devices could be powered just from remotely-radiated power sources fascinated inventors of the early Twentieth century. The idea that power could be harvested from ambient sources is a bit more recent.

Science fiction writers of that period were also fascinated. Robert Heinlein used the idea in a fanciful way in his 1942 novella Waldo; see the entry for radiant power receptors.

Via Battery-Free Cellphone.

Scroll down for more stories in the same category. (Story submitted 7/15/2017)

Follow this kind of news @Technovelgy.

| Email | RSS | Blog It | Stumble | del.icio.us | Digg | Reddit |

Would you like to contribute a story tip? It's easy:
Get the URL of the story, and the related sf author, and add it here.

Comment/Join discussion ( 0 )

Related News Stories - (" Engineering ")

MULTI Model Of Star Trek Turbolift
Cool prototype video!

Hand Gestures And Body Poses Control Devices
'He waved his hand... the circuit switched...'- Philip K. Dick, 1955.

Cellphone Harvests Power From Ambient Radio Signals And Light
A battery-free phone.

Chairless Chair Exoskeleton By Sapetti
'Earth's scientists... devised rigid metallic clothing...' - Edmond Hamilton, 1932.

 

Google
  Web TechNovelgy.com   

Technovelgy (that's tech-novel-gee!) is devoted to the creative science inventions and ideas of sf authors. Look for the Invention Category that interests you, the Glossary, the Invention Timeline, or see what's New.

 

 

 

 

 

Current News

Will A Steel Umbrella Stop Russia?
'Everyone was aware that the damned platform was wandering around in its own orbit...'

EVE Artificial Womb For Lambs (For Now)
'In the crimson darkness, stewing warm on their cushion of peritoneum and gorged with blood-surrogate and hormones...'

TIKAD Armed Drone Ready To Fight
'Each a television eye and a sonic stunner...'

Bees Royal Jelly Helps Wounds Heal Faster
'An alien drug... used by an insect race.'

NASA Wants To Make Oxygen On Mars
'They plop down on the Red and if the dust is deep enough ... they burrow in...'

Hackers Insert Malware Into DNA
'They tied the memory to the bloodline and that was their record!'

X2-VelociRoACH Cooperates To Launch Tiny Drones
Little robots cooperating can do big tasks. Eventually.

'Do Not Pay' Chatbots To Replace Law Firm Associates?
'I want my lawyer program.'

MULTI Model Of Star Trek Turbolift
Cool prototype video!

A Look Into The Future Of Spacecraft!
Ever wonder how you look when you enter a new part of a spacecraft?

An 'Ethical Black Box' For Robots?
Explored by science fiction authors.

Dadbot Digital Immortality
'A hardwired ROM cassette replicating a dead man's skills...'

Should We Permit Computers To Create Their Own Language?
'Talk Between Robots radio...'

Breakthrough Starshot Sprites Yearn For Alpha Centauri
'Whoever launched it fired a laser cannon...'

Kino Project Roaming Personal Fashion Robots
'Most of the crew have the tiny imp ride on their shoulder...'

Astronaut Exercise Video, Predicted By SF Writers
'Joe got out the gravity-simulator harnesses.'

More SF in the News Stories

More Beyond Technovelgy science news stories

Home | Glossary | Invention Timeline | Category | New | Contact Us | FAQ | Advertise |
Technovelgy.com - where science meets fiction™

Copyright© Technovelgy LLC; all rights reserved.