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1. 发明申请

US20130106476A1 TEMPERATURE COMPENSATION IN A PLL 有权
标题翻译： PLL中的温度补偿
公开(公告)号：US20130106476A1
公开(公告)日：2013-05-02
申请号：US13283843
申请日：2011-10-28
申请人： CYRIL JOUBERT , SEBASTIEN RIEUBON
发明人： CYRIL JOUBERT , SEBASTIEN RIEUBON
IPC分类号： H03L7/06
CPC分类号： H03L1/00 , H03J2200/10 , H03L1/023 , H03L1/025 , H03L7/099 , H03L2207/06
摘要： A method and apparatus for compensating for temperature variation in a phase locked loop (PLL) includes receiving an error signal by a controller in which the error signal representative of an instantaneous frequency difference between a reference frequency signal and an output frequency signal of a voltage controlled oscillator of the PLL, and determining when a voltage of the error signal is outside of a predetermined voltage range. When the voltage is outside the predetermined voltage range, the method includes generating a new digital compensation signal based upon a previous digital compensation signal, and converting the new digital compensation signal to be an analog compensation signal. The method further includes filtering the analog compensation signal by a filter to produce a filtered analog compensation signal, and adjusting the output frequency of the voltage controlled oscillator in accordance with the filtered analog compensation signal.
摘要翻译：用于补偿锁相环（PLL）中的温度变化的方法和装置包括通过控制器接收误差信号，其中，该误差信号表示参考频率信号和电压控制的输出频率信号之间的瞬时频率差 PLL的振荡器，并且确定误差信号的电压何时超出预定电压范围。当电压超出预定电压范围时，该方法包括基于先前的数字补偿信号产生新的数字补偿信号，并将新的数字补偿信号转换为模拟补偿信号。该方法还包括通过滤波器对模拟补偿信号进行滤波以产生经滤波的模拟补偿信号，以及根据经滤波的模拟补偿信号调整压控振荡器的输出频率。

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