Patents by Inventor John E. Winter

John E. Winter 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).

  • Frequency shift for removing spurious spectral components from spectrum analyzer output
    Patent number: 4791577
    Abstract: Apparatus for eliminating spurious spectral components from a spectral analyzer output signal. An input signal is mixed with two separate local oscillator frequencies separated by a frequency offset value to produce two intermediate-frequency signals, which are processed in spectral analyzers. The outputs of the analyzers are then compared to identify and eliminate any components that do not differ in frequency by the offset value.
    Type: Grant
    Filed: October 3, 1985
    Date of Patent: December 13, 1988
    Assignee: TRW Inc.
    Inventor: John E. Winter