Patents by Inventor Cobus de Beer

Cobus de Beer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Hybrid AFC using DCXO and RF PLL
    Patent number: 8873682
    Abstract: A technique to provide hybrid compensation to correct for drifts in a reference frequency output from a digitally-controlled crystal oscillator (DCXO). A first compensation is provided to the DCXO to adjust for overlap or discontinuity of the reference frequency caused by switching capacitors in the capacitor array that controls drift of the reference frequency output. The second compensation is obtained at a phase-locked loop (PLL) that receives the reference frequency signal from the DCXO. The second compensation adjusts the PLL to adjust for variations of the reference frequency that remain after performing compensation in the DCXO.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: October 28, 2014
    Assignee: Broadcom Corporation
    Inventors: Rami Mehio, Masoud Kahrizi, Cobus de Beer, Michael Buyanin
  • Hybrid AFC using DCXO and RF PLL
    Publication number: 20140091842
    Abstract: A technique to provide hybrid compensation to correct for drifts in a reference frequency output from a digitally-controlled crystal oscillator (DCXO). A first compensation is provided to the DCXO to adjust for overlap or discontinuity of the reference frequency caused by switching capacitors in the capacitor array that controls drift of the reference frequency output. The second compensation is obtained at a phase-locked loop (PLL) that receives the reference frequency signal from the DCXO. The second compensation adjusts the PLL to adjust for variations of the reference frequency that remain after performing compensation in the DCXO.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: BROADCOM CORPORATION
    Inventors: Rami Mehio, Masoud Kahrizi, Cobus de Beer, Michael Buyanin