Patents by Inventor Joseph A. Hutter

Joseph A. Hutter 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).

  • Goniometer circuit for VOR system
    Patent number: 4186399
    Abstract: The present invention relates to an improved goniometer circuit having extremely low modulation harmonic distortion characteristics, which is particularly suitable for use in a VOR navigation system. In the disclosed circuit, modulation harmonic distortion is greatly reduced by the use of a phase lock loop operating at small signal levels prior to the power amplification stage of the system. The phase lock loop employs a voltage controlled oscillator to completely eliminate harmonic distortion so that the final output of the system is virtually modulation free.
    Type: Grant
    Filed: October 27, 1978
    Date of Patent: January 29, 1980
    Assignee: General Signal Corporation
    Inventors: Carl E. Schwab, Joseph A. Hutter