Patents by Inventor Kai Hendrik Misselwitz

Kai Hendrik Misselwitz 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).

  • Fractional-N ADPLL with reference dithering
    Patent number: 11658666
    Abstract: A fractional-N all digital phase locked loop (ADPLL) includes a randomly modulated delay having a triangular distribution to a frequency reference at an input of the fractional-n ADPLL to reduce spurious tones introduced by delta-sigma modulation of a frequency control word without requiring active control or calibration. In some embodiments, a delay line generates the randomly modulated delay based on a uniformly distributed random number with a flat spectrum that is shaped by a high pass filter.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: May 23, 2023
    Assignee: NXP B.V.
    Inventors: Ulrich Moehlmann, Kai Hendrik Misselwitz