Invention Grant
US08497716B2 Phase locked loop with phase correction in the feedback loop 有权
在反馈环路中进行相位校正的锁相环

  • Patent Title: Phase locked loop with phase correction in the feedback loop
  • Patent Title (中): 在反馈环路中进行相位校正的锁相环
  • Application No.: US13204448
    Application Date: 2011-08-05
  • Publication No.: US08497716B2
    Publication Date: 2013-07-30
  • Inventor: Gang Zhang
  • Applicant: Gang Zhang
  • Applicant Address: US CA San Diego
  • Assignee: QUALCOMM Incorporated
  • Current Assignee: QUALCOMM Incorporated
  • Current Assignee Address: US CA San Diego
  • Agent Kenyon S. Jenckes
  • Main IPC: H03L7/06
  • IPC: H03L7/06
Phase locked loop with phase correction in the feedback loop
Abstract:
A frequency synthesizer circuit is disclosed. The frequency synthesizer circuit includes a comparator circuit coupled to a reference clock and a phase-corrected output signal. The frequency synthesizer circuit also includes a loop filter coupled to the comparator circuit. The frequency synthesizer circuit also includes an oscillator coupled to the loop filter. The frequency synthesizer circuit also includes a fractional divider coupled to an output of the oscillator. The frequency synthesizer circuit also includes phase correction circuitry that corrects a phase of an output of the fractional divider to produce the phase-corrected output signal.
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