Patents by Inventor Stuart D. Lenett

Stuart D. Lenett 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 receiving and tracking phase modulated signals
    Patent number: 4455680
    Abstract: A receiver for tracking and demodulating several types of phase modulated communications, either analog or digital data, for either residual carrier or suppressed carrier signal and for phase modulation or keying of two, four or higher phase angles, from 0.degree. through 360.degree.. A carrier component signal and a converted series sideband component signal are obtained from the incoming signal and summed to produce a carrier tracking signal, permitting more accurate tracking of the above types of phase modulated data.
    Type: Grant
    Filed: May 7, 1980
    Date of Patent: June 19, 1984
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventors: Salvador Villarreal, Stuart D. Lenett, Herbert S. Kobayashi, James F. Pawlowski