Patents by Inventor Richard D. Ruggiero

Richard D. Ruggiero 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).

  • Transponder for use in a radio frequency communication system
    Patent number: 3946393
    Abstract: A transponder for use in a radio frequency communication system is disclosed wherein a received radio frequency signal is converted into an intermediate frequency signal, the latter signal being distorted by a nonlinear network to produce a composite signal having an "intermodulation signal" portion and a "primary signal" portion, such portions having a 180.degree. phase shift therebetween. The distorted signal is converted to a correspondingly distorted radio frequency signal, the latter signal being amplified by a radio frequency amplifier. Intermodulation in the primary signal portion of the distorted radio frequency signal resulting from operation of the radio frequency amplifier in its nonlinear region is reduced by the 180.degree. out-of-phase intermodulation signal portion of the distorted radio frequency signal. Such arrangement enables the radio frequency amplifier to operate with maximum amplification and efficiency.
    Type: Grant
    Filed: January 24, 1974
    Date of Patent: March 23, 1976
    Assignee: Raytheon Company
    Inventors: Thomas P. Dunne, Richard D. Ruggiero