发明名称 TEMPERATURE COMPENSATION IN A PLL
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.
申请公布号 US2013106476(A1) 申请公布日期 2013.05.02
申请号 US201113283843 申请日期 2011.10.28
申请人 JOUBERT CYRIL;RIEUBON SEBASTIEN;ST-ERICSSON SA 发明人 JOUBERT CYRIL;RIEUBON SEBASTIEN
分类号 H03L7/06 主分类号 H03L7/06
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