摘要
对DDS的幅度量化杂散信号进行了时域分析和频谱仿真 ,得到一些关于其频谱特征和杂散水平的规律性结论。然后给出一种在工程实际中用于降低DDS输出杂散的级联方案 ,并以前面分析所得到的结论为依据 ,对方案进行了初步研究。
In this paper, the spurious signals in DDS generated by the amplitude truncation are formulated. Their waveform characters and frequency spectra are respectively analyzed and simulated. Some important conclusions are achieved which present theoretical basis for the scheme which is used to reduce the output spurs in DDS. Then, the scheme of concatenation structure applied in our project is presented and its feasibility is studied.
出处
《通信技术》
2001年第1期28-30,共3页
Communications Technology
