【Key words】 frequency synthesizer； loop stability； phase noise； parameter design； equivalent noise model； noise estimation； differential charge pump； differential VCO； frequency divider； stability optimization； stability compensation； noise optimization；
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等效噪声电压模型 equivalent noise voltage model
本文证明，这既不是相当于原来也没有可衡量的等效噪声模型。
It is proved in this paper that this equivalent noise model is neither equivalent to the original one nor measurable.
以量子理论为基础，把激光能量和各种CCD噪声都转换为等效电荷，在此基础上建立了CCD光斑检测模型。
On the basis of the quantum theory, the optical energy and various noise of CCD could be converted to equivalent electric charges, and then the facular detection model of CCD was proposed.
并运用该模型预测道路交通噪声的等效声级，把预测因子作为样本输入到网络模型，噪声等效声级作为样本输出。
Then use this model to predict equivalent continual sound level of road traffic noise, the fluence factors as the traffic flowing and the equivalent acoustic levels were output.
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