Patents by Inventor by Margaret H. Rolfs, executrix

by Margaret H. Rolfs, executrix 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).

  • Linearizer frequency discriminator for frequency modulated radar transmitters
    Patent number: 4692766
    Abstract: Signals to control the signal processor in the linearizer of a frequency modulated continuous wave radar transmitter are generated by sampling the signal being transmitted, modulating and delaying this signal, mixing the modulated delayed signal with a second sample of the signal being transmitted to obtain an intermediate frequency signal, filtering the intermediate frequency signal to isolate the upper and lower sidebands of this signal and mixing the two sidebands to obtain a control signal having a frequency that varies directly with the beat frequency between the sampled and delayed signals.
    Type: Grant
    Filed: September 25, 1985
    Date of Patent: September 8, 1987
    Inventors: John C. Rolfs, deceased, by Margaret H. Rolfs, executrix