Ultra WidebandUltra-wideband, also known as impulse or zero carrier radio technology, was considered to be one of the most promising technologies of our time.
Unlike conventional radio systems, which operate within a relatively narrow bandwidth, Ultra-wideband operates across a wide range of frequency spectrum by transmitting a series of extremely narrow (10—1000ps) and low power pulses.
The DARPA study panel, that coined the term Ultra-wideband in the 90's, defines it as a system with a fractional bandwidth greater than 25%. Fractional or relative bandwidth is the ratio of signal bandwidth over center frequency. Ultra-wideband should not be confused with spread spectrum technology, which is used by other WLAN standards such as 802.11/b.
A WPAN, also called piconet, is a short-range (10-15m) wireless ad-hoc data communications system, built around an object or a person whether stationary or in motion that allows a number of digital devices to communicate with each other.
RC toys - Operate on radio frequency signals
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