摘要
直接数字频率合成器由于其频率切换快、频率分辨力高、频率切换时相位连续等优点正得到广泛应用，其输出杂散功率是人们关心的重要指标。本文分析了相位截断误差和幅度量化误差引起的杂散功率，推导了一个计算杂散功率的公式，该公式简单但精度高。
The direct digital Frequency Synthesizer is extensively used because of its fastfrequency switching, high frequency resolution and continuous phase while switching frequency. its output spurious power is an importmant speCification concerned by us. This paper analyzes the spurious power caused by the phase trucation error and amplitude quantization error,and derives a formula calculating the spurious power. The formula is simple but accurate.
出处
《电子测量与仪器学报》
CSCD
1997年第4期19-22,共4页
Journal of Electronic Measurement and Instrumentation
关键词
数字频率合成
杂散功率
误差分析
频率合成
Direct digital frequency synthesis
Spurious power
Error analysis
