Patents by Inventor Michael J. Ball

Michael J. Ball 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 frequency synthesizer using delta-sigma modulator in divider control circuit
    Patent number: 5079521
    Abstract: A fractional-N frequency synthesizer having a programmable divider and a control circuit therefor, wherein said control circuit incorporates a digital delta-sigma modulator operating as an interpolator.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: January 7, 1992
    Assignee: STC plc
    Inventors: Philip S. Gaskell, Nigel J. R. King, Eric Breakenridge, Michael J. Ball