Patents by Inventor Daniel Micusik

Daniel Micusik 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).

  • DC and offset cancellation for fully differential optical receiver
    Patent number: 11843418
    Abstract: A method and apparatus that cancels or reduces DC offset in a fully-differential optical receiver. The method includes receiving differential optical signals, converting, with photodetectors, the differential optical signals to differential current signals representative of the differential optical signals, converting, using a transimpedance amplifier, the differential current signals to differential intermediate voltage signals, amplifying, using a main amplifier, the differential intermediate voltage signals to generate differential output voltage signals, and cancelling a DC component of the differential output voltage signals using a fully differential DC cancellation circuit. Output offset may also be cancelled or reduced using digital control.
    Type: Grant
    Filed: September 16, 2021
    Date of Patent: December 12, 2023
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Daniel Micusik, Sachidanandam Sundarraju, Jan Sundermeyer, Juergen Hauenschild
  • DC AND OFFSET CANCELLATION FOR FULLY DIFFERENTIAL OPTICAL RECEIVER
    Publication number: 20230084591
    Abstract: A method and apparatus that cancels or reduces DC offset in a fully-differential optical receiver. The method includes receiving differential optical signals, converting, with photodetectors, the differential optical signals to differential current signals representative of the differential optical signals, converting, using a transimpedance amplifier, the differential current signals to differential intermediate voltage signals, amplifying, using a main amplifier, the differential intermediate voltage signals to generate differential output voltage signals, and cancelling a DC component of the differential output voltage signals using a fully differential DC cancellation circuit. Output offset may also be cancelled or reduced using digital control.
    Type: Application
    Filed: September 16, 2021
    Publication date: March 16, 2023
    Inventors: Daniel Micusik, Sachidanandam Sundarraju, Jan Sundermeyer, Juergen Hauenschild