Abstract
The generation of sinusoidal signal with direct digital synthesis (DDS) technology is studied. The spurious signals of DDS generated by phase truncation, amplitude quantization, D/A conversion and reference clock are analyzed. The errors caused by phase truncation and amplitude quantization are simulated with Matlab. Simulation results agree with the theoretical values. Meanwhile, a sinusoidal signal source is realized with DDS on field programmable gate array (FPGA). The measured real spectra with spectrum analyzer is given. The result shows that the generation of sinusoidal signal with DDS can achieve good spectra and satisfy the system requirements.
| Original language | English |
|---|---|
| Pages (from-to) | 815-818 |
| Number of pages | 4 |
| Journal | Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology |
| Volume | 25 |
| Issue number | 9 |
| Publication status | Published - Sept 2005 |
Keywords
- Amplitude quantization
- Direct digital synthesis
- Field programmable gate array
- Phase truncation