چكيده به لاتين
UWB systems are used in a wide range of applications today due to their many advantages over narrowband systems. It is one of the most important applications of UWB technology in radar systems. Unique features of UWB radars such as high spatial resolution, low probability of interference with other RF signals, low power spectrum density and small size, make them suitable for many applications such as detecting victims under debris, non-destructive imaging, vehicle control, vital signs monitoring and etc. In this dissertation, the front-end of a UWB radar has been designed and simulated to be used to identify victims trapped under rubble. The designed radar includes pulse generator, power amplifier, Low noise amplifier and sampling sections. The transmitter sends gaussian monocycle signals whith 23.42 dBm power for search and rescue operation. At the end of receiver, the radar sampling section is designed using the swept threshold method, which is capable of sampling from received signal with 20 GS/s sampling rate. All simulations, were performed using Cadence software and TSMC 90nm technology.
