Patents by Inventor Ahmad Ahdab

Ahmad Ahdab 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).

  • ICO based linear gain VCO with non-linear V/I converter
    Patent number: 5821821
    Abstract: A voltage controlled oscillator comprising: a ring of inverters comprised of an odd number of serially connected CMOS inverter stages, the inverter stages being connected between first and second oppositely poled power leads, a MOSFET having a source-drain circuit connected between one of the power leads and a first power rail, the other power lead being connected to a second power rail, apparatus for operating the MOSFET in saturation, and apparatus for applying a control voltage to the gate of the MOSFET, referenced to the second power lead, whereby the MOSFET operates as a nonlinear current conduction device having a characteristic such as to linearize the voltage-frequency characteristic of the combined MOSFET--ring oscillator combination.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: October 13, 1998
    Assignee: ATI Technologies Incorporated
    Inventors: Ahmad Ahdab, Hugh Chow, Raymond Chau