A design of high-range resolution radar signal synthesizer

In this paper, we briefly analyze characteristics of Linear Frequency Modulation (LFM) signal, Stepped Frequency signal and Stepped Chirp signal which are employed as high-range resolution radar signals. Then we propose a design of frequency synthesizer based on a NEW Direct Digital Frequency Synthesizer (DDS) which clock frequency is up to 3.2GHz. The frequency synthesizer can generate three kinds of high-range resolution radar signals, which output bandwidth is up to 1.6GHz. Through up-conversion, the frequency synthesizer can be used in many wave bands.

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