Patents by Inventor Walter DeMore

Walter DeMore 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).

  • Polar and linear amplifier system
    Patent number: 6987417
    Abstract: An amplifier system is provided that switches between operation in a polar mode and a linear mode based on a characteristic of an input signal relative to a threshold level. The system operates as a polar amplifier in the polar mode, and as a linear amplifier in the linear mode. A mode selector controls whether polar components of the input signal are sent to a power amplifier or whether a composite signal is amplified.
    Type: Grant
    Filed: June 24, 2003
    Date of Patent: January 17, 2006
    Assignee: Northrop Grumman Corpoation
    Inventors: Frank Winter, Ian Robinson, Walter DeMore
  • Polar and linear amplifier system
    Publication number: 20040263245
    Abstract: An amplifier system is provided that switches between operation in a polar mode and a linear mode based on a characteristic of an input signal relative to a threshold level. The system operates as a polar amplifier in the polar mode, and as a linear amplifier in the linear mode. A mode selector controls whether polar components of the input signal are sent to a power amplifier or whether a composite signal is amplified.
    Type: Application
    Filed: June 24, 2003
    Publication date: December 30, 2004
    Inventors: Frank Winter, Ian Robinson, Walter DeMore