UC知道什么是SFDR？
来源：百度知道 编辑：UC知道 时间：2024/06/07 09:11:20
请问什么是SFDR？下面这句话应该如何翻译合适呢？
Spurious-Free Dynamic Range (SFDR) refers to the ratio (measured in decibels) between the highest level of the fundamental signal and the highest level of any spurious, signal—including aliases and harmonically related frequency components—in the spectrum.
Spurious-Free Dynamic Range (SFDR) refers to the ratio (measured in decibels) between the highest level of the fundamental signal and the highest level of any spurious, signal—including aliases and harmonically related frequency components—in the spectrum.
电子工程术语定义: SFDR
术语表: SFDR
定义
无杂散动态范围：用于A/D转换器和D/A转换器(ADC和DAC)的指标。
ADC中，无杂散动态范围(SFDR)指载波频率(最大信号成分)的RMS幅度与次最大噪声成分或谐波失真成分的RMS值之比，SFDR通常以dBc (相对于载波频率幅度)或dBFS (相对于ADC的满量程范围)表示。
DAC中，无杂散动态范围(SFDR)指载波频率(最大信号成分)的RMS幅度与次最大失真成分的RMS值之比，SFDR通常以dBc (相对于载波频率幅度)或dBFS (相对于DAC的满量程范围)表示。具体取决于测量条件，SFDR在预先定义的窗口或奈奎斯特频率内观测。
Spurious-Free Dynamic Range (SFDR)
refers to the ratio (measured in decibels) between the highest level of the fundamental signal and the highest level of any spurious, signal—including aliases and harmonically related frequency components—in the spectrum.
无杂散动态范围：最高基波与最高谐波之比，在频域里用dB表示。