Ultra-wide band radio: the emergence of an important new technology

Modern low power UWB (ultra wide band) signaling is the art of reusing previously allocated RF bands by hiding signals under the noise floor. Government regulators are testing UWB emissions to ensure that adequate protection exists to current users of the communications bands, and are on the brink of authorizing its use. The commercial use of UWB is distinct from the radar applications of the 1960s and 70s, and the underlying technology is distinct. Short pulse low power techniques have enabled practical through-the-wall radars, centimeter precision 3D positioning and communication capabilities at the highest spatial capacities as measured in bits/Hz/m/sup 2/.