Patents by Inventor Robert A. Sowadski

Robert A. Sowadski 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).

  • Spurious product and local oscillator radiation suppression system for use in superheterodyne radio receivers
    Patent number: 5179728
    Abstract: A system for suppressing spurious product signals and radiation resulting from the leakage of local oscillator signal energy in superheterodyne radio receivers. The system includes a 0.degree. signal splitter, a 180.degree. signal splitter, a pair of mixers and a 180.degree. signal combiner. The splitters split the communications input signal and local oscillator signal into signal components which are mixed together in the mixers to form intermediate frequency components which are combined in the combiner.
    Type: Grant
    Filed: September 30, 1991
    Date of Patent: January 12, 1993
    Assignee: Rockwell International Corporation
    Inventor: Robert A. Sowadski