| In the evolution of modern radars, HRR (High Range Resolution) is oneof the most important directions, meanwhile, radar's range resolution is in proportionto the bandwidth of transmitted signal. So, in order to achieve high range resolution, itis necessary to develop UWB (Ultra-Wideband) radar signal generator. As thebandwidth of signal increases, signal integrity issues trend to be one of the mostcrucial factors of radar signal generator. It is meaningful for the development of HRRradar to study signal integrity issues in detail, and to develop UWB signal generator.The research of this dissertation focused on the development of UWB signalgenerator. Some basic signal integrity issues were studied, such as terminationtechniques, crosstalk depression, timing analysis, PDS design techniques, and so on. Ahigh-speed digital system design method based on.signal integrity simulation andanalysis was concluded. This method was used during the design of UWB LFM(Linear Frequency Modulation) generator and the verification equipment ofUWB-LFM generator, detailed simulations have been conducted to find signalintegrity errors possibly exist, and all problems are fixed.Experiment results showed that, the UWB LFM generator developed in thisdissertation successfully generated a UWB-LFM (bandwidth: 1.3GHz) signal and adigital-IF LFM signal (carrier frequency: 300MHz, bandwidth: 100MHz). All targetswere observed. This design shows that, signal integrity analysis during thedevelopment of digital systems ensures the system reliability; decreases developmentcosts; shrinks product cycle time. It is widely applicable in digital system designs. |
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