Electromagnetics-Related Aspects of Signaling and Signal Processing for UWB Short Range Radios

摘要

A numerical model of the UWB channel created by two dipole antennas is developed to characterize the antennas and the whole channel using system level concepts such as transfer functions in the frequency domain. This model is based on rigorous numerical electromagnetic (EM) analysis, thereby enabling predictions of the channel performance under impact of different antenna geometries, their spatial arrangements, and disturbance caused by diverse factors observable in practical links. These studies of channels address to a number of important issues in electromagnetic-related aspects of UWB signaling schemas and signal processing. First, pulse shaping is developed to support signal transmission across the channel with necessary temporal and spectral features, and high efficiency of energy transmission. To this end, several realistic antennas and practical short-range radio operational scenarios are considered. Second, a system-oriented approach is presented through antenna-signal-circuitry co-design. Finally, overall system performance and hardware complexity of signaling including receiver processing are evaluated.