摘要
利用FPGA芯片及D/A转换器,采用直接数字频率合成(DDS)技术,设计并实现了相位、频率可控的三相正弦信号发生器。正弦调制波的产生采用查表法,仅将1/4周期的正弦波数据存入ROM中,减少了系统的硬件开销。仿真和电路测试表明,输出波形完全达到了技术要求,证明了设计的正确性和可行性。
Based on combination of FPGA and D/A, a three - phase sinuous signal generator whose phase and frequency can be modified is designed and realized by using DDS. Sinuous modulation wavefonns come from lookup table. Data of sinuous waveforms only in 1/4 sinuous cycle is required to be stored in ROM so that the internal hardware resource of the FPGA is reduced. Simulation and tests show that the output waveform can meet the design specifications, which proves the design is correct and feasible.
出处
《电讯技术》
北大核心
2011年第4期60-63,共4页
Telecommunication Engineering
基金
陕西省教育厅自然科学专项科研计划项目(09JK7302010JK838)~~
