Engineers
at Purdue University have created a system that could result in much
more accurate “ultra-wideband” (UWB) radio signals for
ground-penetrating radar, radio communications and imaging systems
specifically created to perceive through walls.The scientists first and
foremost create laser pulses with distinct “shapes,” which specifically
characterize the altering concentration of light from the commencing to
end of each pulse.
The pulses are then converted into electrical signals for various
applications. By controlling the shapes of laser pulses, the researchers
are able to adjust the frequencies of the resulting radio signals and
to produce signals with higher frequencies than are otherwise possible.
Shorter signals make it easier to screen out interference and enhance
image resolution, promising to improve the accuracy of systems used to
detect landmines and other underground objects and for newly emerging
devices that can look through walls and see what’s on the other side.
This technology has numerous potential applications, including
high-speed handheld wireless communications for consumer electronics,
radar systems in cars that might be used to prevent collisions and the
development of “personal area networks,” or wireless networks linking
computer equipment, personal digital assistants and other devices within
a person’s workspace.
This technology (OTC No. 64180) is available for licensing from
Purdue University.



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