Generators, antennas and registrator for UWB radar application

The paper describes the basic elements developed for realization of UWB radar: generators, antennas and registrator. Generators produce UWB signals of nano- and picosecond duration, having the form of a step-like function, a monopulse, or a pulse in the form of sine wave single period (monocycle). Fulfillment of FCC radiation requirements means filtering the UWB signal spectrum, which results in distortions of the waveform. It is shown that filtering sine wave single period pulses of 0.2 ns duration provides slight distortion. A description of a TEM broadband shielded horn antenna with low side and back pattern lobes is given. The registrator for reception of UWB signals and software for secondary signal processing are described.