2002•Modern RadarRequires access
Spurious Analysis of Direct Digital Frequency Synthesizer and Frequency Expansion Study
Guo De
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Abstract
Based on the successful development of DDS, some methods to expand its upper frequency limit are described and its spurious analysis is performed in this paper. The DDS chip adopts AD9852 and the control circuit applies TMS320C31. By programming, this DDS can easily achieve amplitude modulation, frequency modulation and phase modulation. The practical application achieves preferable effect.