Spur frequency estimation inside digital phase locked loop
AssigneeIntel Corporation
InventorsRotem Avivi, Michael Kerner, Yair Dgani
Life of this patent
Estimating the term…
Abstract
Systems and methods configured to cancel spurs in a phase locked loop (PLL) system are provided. A method configured to cancel spurs in a PLL system includes receiving a PLL signal from the PLL system; determining an estimated spur frequency of a spur in the received PLL signal based on the received PLL signal; and canceling the spur in the received PLL signal based on the estimated spur frequency.
Claims22
A frequency generation system, comprising:
- a spur frequency estimation circuitry configured to:
- receive a phase locked loop (PLL) signal from a PLL;
- determine an estimated spur frequency of a spur in the received PLL signal based on the received PLL signal;
- and
- an inverse spur circuitry configured to cancel the spur in the received PLL signal based on the estimated spur frequency.
A method configured to cancel spurs in a phase locked loop (PLL) system, comprising:
- receiving a PLL signal from the PLL system;
- determining an estimated spur frequency of a spur in the received PLL signal based on the received PLL signal;
- and
- canceling the spur in the received PLL signal based on the estimated spur frequency.
A spur frequency estimation circuitry, comprising:
- an input circuitry configured to receive a phase locked loop (PLL) signal from a PLL;
- and
- a processing circuitry configured to determine an estimated spur frequency of a spur in the received PLL signal based on the received PLL signal.
A computer-readable storage device storing computer-executable instructions that, in response to execution by a processor, cause the processor to cancel spurs in a phase locked loop (PLL) system, wherein the instructions include instructions for:
- receiving a PLL signal from the PLL system;
- determining an estimated spur frequency of a spur in the received PLL signal based on the received PLL signal;
- and
- canceling the spur in the received PLL signal based on the estimated spur frequency.
Dependencies are inferred from the claim text.