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Application Notes
Introduction
This application note is written for people who need to understand the configuration and testing of ultra-wideband (UWB) devices, and some of the issues surrounding their use. A broad range of topics is addressed in this paper, including practical test techniques. Further details on many of them may found in the references in Appendix B. The basic concepts behind UWB signals are not new, but the radios are becoming more sophisticated.
The signals are split into three main groups, depending on the signal generation technique: baseband-pulsed, pulse-modulated RF, and orthogonal frequency division multiplexing (OFDM).
Pulsed signals have been used in air and ground-penetrating RADAR systems of various forms for many years. Ultra-wideband OFDM involves adapting standard OFDM principles to meet the regulatory requirements of an underlay technology.
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