Optimization of Direct Digital Frequency Synthesizer
Liwen Zheng · Modern Electronics Technique · 2010
The method and steps of using QuartusⅡto realize DDS(direct digital frequency synthesis) is described in detail.The principle of DDS is analyzed and the multi-stage pipeline control technology is used for optimizing the DDS phase accumulator.The waveform storage table is optimized by symmetrical waveform storage method,and is simulated in development environment.The reconstructed IP nucleus of DDS can be gained based on FPGA.It is very easy to achieve frequency modulation with the DDS module,and has more comprehensive and nice practicality.