Scientists develop new multi purpose receiver

thecheers.org    2007-11-30 07:29:01    

Washington, Nov 30 : New research work has made scientists successful in combining a multi purpose receiver for high frequencies with an antenna on a small chip.
New research work has made scientists successful in combining a multi purpose receiver for high frequencies with an antenna on a small chip.

Created by a research team at the Chalmers University of Technology in Sweden, the receiver is an electronic circuit including antenna, low noise amplifier, and frequency converter monolithically integrated on gallium arsenide.

It is just a few square millimetre and is suitable for new safety systems, image sensors, and radio communication for high bitrates.

"This is a breakthrough in our research. Our result opens the possibility to manufacture systems for very high frequencies within the so called 'THZ-electronics' area, to a relatively low cost," said Herbert Zirath , professor at the department of Microwave Electronics. "In the next phase of this project, even more functions can be integrated on the same chip", he added.

This circuit can for instance be used in radiometer systems in future safety systems looking for concealed weapons without personal visitation.

Other applications for this circuit are imaging sensors that can look through darkness, smoke or fog. This is an important safety function for vehicles such as cars and aircrafts.

"Thanks to this technology, we now have the possibility of integrating imaging sensors by using circuits of a few square millimeters, which is much smaller than the present technology at a lower cost, said Zirath.

"For automotive applications such as cars, aircrafts and satellites, the size and weight is of utmost importance. The present systems consist of many pieces and demands several cubic decimetres volume", he added.

The new circuit is designed to work at the frequency of 220 gigahertz, but this is not an upper limit. According to professor Zirath, the technology can be used up to and above 300GHz in a near future.

The technology is also interesting for wireless data communication because, due to the very high bandwidth, data rate well above 10 Gbit/s is possible to realize in future radio links.

"We are also implementing receivers for future earth observation satellites for environmental studies and weather forecasts at frequencies 118 and 183 GHz, using the same technology," said Zirath. (ANI)
© 2007 ANI


TAGS: Tech   


more
New rubber may soon see face masks that change shape to fit any face

It won't be long before there will be a face mask that may change its shape to fit any user, or a lens that does the same, for scientists have developed a new class of shape-memory rubber, that can be stretched to a new shape and regain its original shape when heated.

Google algorithm works very much like the human brain

A psychologist at the University of California, Berkeley, says that human memory studies may be improved by examining the tricks employed by online search engines and vice versa.

Technology upgradation vital to compete in global markets, says Kamal Nath
11.Dec 2007
Union Minister of Commerce and Industry Kamal Nath t...read

Now, a humanoid robot that is no pushover
7.Dec 2007
Japanese researchers have developed a humanoid robo...read

ISRO denies shelving of spy satellite launch under US pressure
4.Dec 2007
The Indian Space Research Organisation (ISRO) has rebutted reports appearing in...read



China to launch its first Mars probe in 2009

New technique creates adult image of girl missing for 26 years

Aussies more comfortable with their virtual personas rather than their true selves

Robot teddy to help sick kids

Scientists develop new multi purpose receiver