发明申请
- 专利标题: Phase Locked Loop, Transceiver Device and Method for Generating an Oscillator Signal
- 专利标题(中): 锁相环,收发器装置和产生振荡器信号的方法
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申请号: US11925379申请日: 2007-10-26
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公开(公告)号: US20080106341A1公开(公告)日: 2008-05-08
- 发明人: Thomas Mayer , Christian Wicpalek , Thomas Bauernfeind , Linus Maurer
- 申请人: Thomas Mayer , Christian Wicpalek , Thomas Bauernfeind , Linus Maurer
- 优先权: DEDE102006050879.3 20061027
- 主分类号: H03L7/085
- IPC分类号: H03L7/085 ; H03L7/08
摘要:
A phase locked loop has a controlled oscillator for outputting an oscillator signal depending on a control signal. A comparator generates a comparison result from a comparison between a reference frequency signal and a feedback signal derived from the oscillator signal. The phase locked loop also has a filter block for filtering the comparison result and for deriving the control signal from the comparison result, where the filter block has a loop filter and a rejection filter for the frequency-selective attenuation of at least one first interference frequency in the comparison result.