Patents by Inventor Gary Parker English

Gary Parker English 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).

  • Method and apparatus for efficient signal amplification
    Patent number: 6252455
    Abstract: An amplifier circuit (100) includes a power amplifier (124) that has a modulated power supply input (125). The modulated power supply input (125) is modulated with a signal related to the amplitude of the signal being amplified by the power amplifier (124). The power amplifier (124) is maintained at a substantially constant operating point. The amplifier circuit (100) also includes a feedback path that generates an error signal as a function of the input signal envelope and the output signal envelope. The error signal is integrated and the resulting integrated error signal drives the gain control of a variable gain element (120) in the amplifier chain prior to the power amplifier (124).
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: June 26, 2001
    Assignee: Motorola, Inc.
    Inventors: Christopher Neil Kurby, Joe Martin Smith, Gary Parker English