Patents by Inventor Phong Thanh Nguyen

Phong Thanh Nguyen 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).

  • Voltage-controlled oscillator capable of operating at lower power supply voltages
    Patent number: 5801593
    Abstract: An improved voltage controlled oscillator circuit is based on a multivibrator design with an internal gain stage to permit low voltage operation. An internal gain stage maintains a loop gain of greater than one to ensure oscillation even at power supply voltages as low as 2.7 volts. The added gain allows the use of resistors inserted on either sides of a timing capacitor for improved linearity.
    Type: Grant
    Filed: December 16, 1996
    Date of Patent: September 1, 1998
    Assignee: Exar Corporation
    Inventor: Phong Thanh Nguyen