Patents by Inventor Paul A. Gianfortune

Paul A. Gianfortune 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).

  • RF amplifier including traveling wave tube with sequential stages
    Patent number: 5834971
    Abstract: Multiple gain stages are provided in a single traveling wave tube amplifier (TWTA). Each gain stage comprises an interaction circuit, an associated RF input, and an associated RF output. The gain stages are separated by a drift length that is selected to achieve a desired interaction between gain stages. In one embodiment that uses only one TWT, couplers, and adjustment blocks external to the TWT, feed-forward and feedback connections remove intermodulation distortion introduced by the TWTA.
    Type: Grant
    Filed: November 8, 1995
    Date of Patent: November 10, 1998
    Assignee: Hughes Electronics
    Inventors: David B. Giguere, Paul A. Gianfortune
  • Linear amplifier system and method
    Patent number: 5774018
    Abstract: Complex additional feed-forward error sensor loops and error correction loops are replaced in a high-frequency multi-carrier signal amplifier system with simple signal predistortor structures. In addition, less costly error amplifiers are facilitated and system efficiency increased by the introduction of error predistortor structures.
    Type: Grant
    Filed: September 18, 1996
    Date of Patent: June 30, 1998
    Assignee: Hughes Electronics Corporation
    Inventors: Paul A. Gianfortune, Thomas M. Straus