Ultra wide band (UWB) systems and their implications to electromagnetic environment

Ultra Wide Band (UWB) systems have received considerable interest in recent years as a system that might offer technical improvements in conventional electronic systems. Defence applications of UWB signals include communication radar, electronic intelligence and electronic warfare. Defence radio and radar systems will require signals free from interception exploitation and interference. The electronic warfare sequence of measures, countermeasures, counter-countermeasures leads to use of spread spectrum (SS), wide band (WB) and ultra wide band (UWB) signal waveforms. Availability of UWB systems with their subtle characteristics enhances the complexity of achieving electromagnetic compatibility (EMC). For efficient application, UWB systems require special EMC considerations to achieve intra and inter system EMC. In this paper an attempt has been made to highlight electromagnetic interference (EMI) and compatibility aspects pertaining to UWB systems. The electromagnetic environment and its impact in intra and inter system EMI problems, their control and required modifications of the existing standards are critically analyzed and discussed.