摘要
详细阐述了利用QuartusⅡ实现直接数字频率合成器(DDS)的方法和步骤。分析了DDS的设计原理,采用多级流水线控制技术对DDS相位累加器进行了优化,利用存储对称波形方法对波形存储表进行了优化,并在开发环境下进行了功能仿真,选用现场可编程器件FPGA作为目标器件,得到了可以重构的IP核,实现了复杂的调频功能。利用该方法实现的DDS模块具有更广泛的实际意义和更良好的实用性。
The method and steps of using Quartus Ⅱ to realize DDS（direet 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.
出处
《现代电子技术》
2010年第18期143-144,159,共3页
Modern Electronics Technique
关键词
DDS
相位累加器
波形存储表
QuartusⅡ
direct digital frequency synthesis
phase accumulator
waveform storage table
Quartus Ⅱ
