Spectrum Analysis and Methods of Spur Reduction Based on DDS Techniques
Shao Chun-hui · Microcomputer Information · 2008
Direct digital synthesis technology promotes frequency synthesis development quickly, although, it now be restricted by it's connatural spur characteristic. Based on analyzing principle of DDS and the causes for spur of the DDS, some methods to reduce spurs are proposed. The technique of DDS hybrid PLL is analyzed in detail from principle and design. The practical application shows that meets the demands of circuit of high frequency agility, stability, wider bandwidth and has widely application.