Estimating the Amplitude Reduction of Clock Harmonics Due to Frequency Modulation
Estimating the Amplitude Reduction of Clock Harmonics Due to Frequency Modulation
复制标题
估计调频导致的时钟谐波幅度减小
DOI：
10.1109/temc.2006.884451
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发表时间：
2006
影响因子：
2.1
通讯作者：
A. Sugiura
中科院分区：
文献类型：
--
作者：
Y. Matsumoto;K. Fujii;A. Sugiura
从理论上推导了简单的公式，用于估计在电磁干扰（EMI）测试中测量的时钟谐波幅度的减少，由于时钟频率调制（FM）。它们显示了在频谱测量中，幅度降低与时钟FM参数和分辨率带宽（RBW）的关系。数值模拟和实验清楚地证明了这种分析的有效性。由于时钟FM不会降低时钟谐波的实际功率，因此在评估辐射谐波干扰无线系统的可能性时，必须仔细处理谐波幅度的明显降低
Simple formulae were theoretically derived for estimating the reduction in amplitude of clock harmonics, as measured in electromagnetic interference (EMI) tests, due to clock frequency modulation (FM). They show how the amplitude reduction is related to the clock FM parameters and resolution bandwidth (RBW) in spectrum measurement. Numerical simulations and experiments clearly demonstrated the validity of this analysis. Because clock FM does not reduce the actual power of the clock harmonics, the apparent decrease in the harmonic amplitude must be carefully treated when evaluating the potential of the radiated harmonics interfering with wireless systems