Impulse Radio is another name for one particular flavor of UWB - or Ultra Wideband - a technology that is
really hitting the big time! This technology uses extremely short pulses (.1 to 1.5 Nanoseconds)
and very low average power in the milliwatt range. Ultra Wideband Radiation has been defined
as any radiation in which the 3db bandwidth is at least 25% or greater of its center frequency.
This waveform can be used to transport information by time modulation of the transmitted signal.
By modulating the signal in time, it is possible to represent a digital "one" with a
pulse that arrives earlier than expected, or a digital "zero" with a pulse that arrives
later than expected. Impulse radio/UWB promises simplicity, low cost, low power consumption,
and superior multipath rejection, making it suitable for a broad range of communications,
positioning, and radar imaging applications.
One of the first companies to exploit this technology was
Zircon Corp. -- they contacted SSS Online some
years ago to evaluate the latest work at Lawrence Livermore National Laboratory on this
stuff. There are other players in this area right now, including Pulse-Link, Motorola, and
Freescale Semiconductor (see resource links below). Our own managing company,
Pegasus Technologies, is also involved
in a very interesting impulse-based UWB project presently.
This page is intended to help you learn more about this exciting technology and search some
of the related articles, resources and links on the Internet!
Micropower Impulse Radar Home Page.
MIR is a low power UWB technology developed by Lawrence Livermore National Laboratory,
that can be used for sensing and measuring distances to objects in proximity to each other. Commercial applications
include vehicle/traffic applications, security applications, search and rescue, and appliances such as studfinders
and laser tape measures.