Patents by Inventor Sitaramarao S. Yechuri

Sitaramarao S. Yechuri 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).

  • Phase locked loop with digital vernier control
    Patent number: 6031426
    Abstract: A phase-locked-loop-stabilized voltage controlled oscillator relies on a sampling of the analog-frequency-control voltage of a voltage-controlled oscillator in a phase-locked-loop circuit to act as a reference voltage for a second free-running voltage-controlled oscillator. A vernier-adjustment voltage is injected into the control input of the second voltage-controlled oscillator to produce a finely variable derivative frequency not otherwise producible by a conventional phase-locked-loop circuit.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: February 29, 2000
    Assignee: Avant! Corporation
    Inventor: Sitaramarao S. Yechuri