Invention Grant
- Patent Title: PLL loop bandwidth calibration
- Patent Title (中): PLL环路带宽校准
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Application No.: US11962016Application Date: 2007-12-20
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Publication No.: US08483985B2Publication Date: 2013-07-09
- Inventor: Troy Stockstad , Tracy Hall
- Applicant: Troy Stockstad , Tracy Hall
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM, Incorporated
- Current Assignee: QUALCOMM, Incorporated
- Current Assignee Address: US CA San Diego
- Agent William H. Hooks
- Main IPC: G06F19/00
- IPC: G06F19/00

Abstract:
Systems and methodologies are described that facilitate calibration of the loop bandwidth of a phase-locked loop (PLL). Calibration for the loop bandwidth of a PLL as described herein can be performed by optimizing the loop response of the PLL. Optimization of the loop response of the PLL can be achieved by modifying the value of a feedback counter of the PLL to induce a loop response at the PLL. The loop response of the PLL can be measured and compared to an ideal loop response. Based on this comparison, appropriate adjustments can be made to the PLL. Further, various techniques described herein facilitate calibration of a PLL by adjusting only parameters of a charge pump of the PLL without requiring individual control mechanisms for each element of the PLL, thereby improving PLL performance and manufacturing yield.
Public/Granted literature
- US20080164918A1 PLL LOOP BANDWIDTH CALIBRATION Public/Granted day:2008-07-10
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