Patents by Inventor Phung N. Phan

Phung N. Phan 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).

  • Self-calibrating, self-correcting transceivers and methods
    Patent number: 6118811
    Abstract: A transceiver has a digital signal processor which can insert calibration signals of known level and frequency into transmitters for calibration and correction of transmitter parameters. An output of the calibrated and corrected transmitter is subsequently coupled into a calibration mixer along with a mixing signal (e.g., from a local oscillator generator. The outputs of the calibration mixer have known levels and frequencies and are inserted into receivers for calibration and correction of receiver parameters.
    Type: Grant
    Filed: July 31, 1997
    Date of Patent: September 12, 2000
    Assignee: Raytheon Company
    Inventors: Robert T. Narumi, Lloyd F. Linder, Erick M. Hirata, Don C. Devendorf, Matthew S. Gorder, Phung N. Phan, Ricky Y. Chen