Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Optical Solution Revives Hands Free Mobile Telephones

03.09.2002


Hands free sets for mobile phones may be on the verge of a big comeback thanks to new research by the University of Warwick. Many people used hands free sets in an attempt to avoid what they perceived as a microwave radiation risk from holding a mobile phone close to one`s head.

However when it was pointed out that the standard wire based hands free kit actually itself acted as an aerial amplifying any signal to the users head the kit fell out of favour with this type of user.

Now researchers led by Professor Roger Green at the University of Warwick have found and patented a way of producing optical signal based hands free devices for mobile phones that do indeed shield users who fear the microwave radiation from mobile phones.

The researchers have developed a simple means of converting electrical signals from the mobile phone into an optical signal that is guided up through a plastic tube to an ear-piece where the signal is converted back into an audible form. This plastic tube cannot act as a radio antenna so no radio energy is channelled to the users head.

The technology also uses a crystal based ear-piece speaker instead of an electromagnetic coil to further minimise the action of stray electric fields.

Roger Green, Professor of Electronic Communication Systems,
School of Engineering, University of Warwick,
Coventry CV4 7AL.Tel : +44 (0)24 76 523133
Mobile +44 (0)7855 901515
Roger.Green@warwick.ac.uk

Peter Dunn | AlphaGalileo

More articles from Information Technology:

nachricht Scientists to give artificial intelligence human hearing
19.12.2018 | Peter the Great Saint-Petersburg Polytechnic University

nachricht German Research Foundation supports new theoretical physics project at Jacobs University Bremen
18.12.2018 | Jacobs University Bremen gGmbH

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: New megalibrary approach proves useful for the rapid discovery of new materials

Northwestern discovery tool is thousands of times faster than conventional screening methods

Different eras of civilization are defined by the discovery of new materials, as new materials drive new capabilities. And yet, identifying the best material...

Im Focus: Data storage using individual molecules

Researchers from the University of Basel have reported a new method that allows the physical state of just a few atoms or molecules within a network to be controlled. It is based on the spontaneous self-organization of molecules into extensive networks with pores about one nanometer in size. In the journal ‘small’, the physicists reported on their investigations, which could be of particular importance for the development of new storage devices.

Around the world, researchers are attempting to shrink data storage devices to achieve as large a storage capacity in as small a space as possible. In almost...

Im Focus: Data use draining your battery? Tiny device to speed up memory while also saving power

The more objects we make "smart," from watches to entire buildings, the greater the need for these devices to store and retrieve massive amounts of data quickly without consuming too much power.

Millions of new memory cells could be part of a computer chip and provide that speed and energy savings, thanks to the discovery of a previously unobserved...

Im Focus: An energy-efficient way to stay warm: Sew high-tech heating patches to your clothes

Personal patches could reduce energy waste in buildings, Rutgers-led study says

What if, instead of turning up the thermostat, you could warm up with high-tech, flexible patches sewn into your clothes - while significantly reducing your...

Im Focus: Lethal combination: Drug cocktail turns off the juice to cancer cells

A widely used diabetes medication combined with an antihypertensive drug specifically inhibits tumor growth – this was discovered by researchers from the University of Basel’s Biozentrum two years ago. In a follow-up study, recently published in “Cell Reports”, the scientists report that this drug cocktail induces cancer cell death by switching off their energy supply.

The widely used anti-diabetes drug metformin not only reduces blood sugar but also has an anti-cancer effect. However, the metformin dose commonly used in the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

ICTM Conference 2019: Digitization emerges as an engineering trend for turbomachinery construction

12.12.2018 | Event News

New Plastics Economy Investor Forum - Meeting Point for Innovations

10.12.2018 | Event News

EGU 2019 meeting: Media registration now open

06.12.2018 | Event News

 
Latest News

Scientists to give artificial intelligence human hearing

19.12.2018 | Information Technology

Newly discovered adolescent star seen undergoing 'growth spurt'

19.12.2018 | Physics and Astronomy

From a plant sugar to toxic hydrogen sulfide

19.12.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>