Patents by Inventor John E. Ruetz

John E. Ruetz 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).

  • Low jitter voltage controlled oscillator (VCO) circuit
    Patent number: 5581216
    Abstract: A voltage controlled oscillator circuit includes a predetermined number of interconnected differential comparator cells having source connected p-channel and n-channel transistors, a biasing transistor connected to the sources of the p-channel or n-channel transistors, and clamping circuits connected to said first and second n-channel transistors. The voltage controlled oscillator circuit further includes filter circuitry for filtering the input currents to the biasing transistor.
    Type: Grant
    Filed: January 24, 1995
    Date of Patent: December 3, 1996
    Assignee: IC Works, Inc.
    Inventor: John E. Ruetz