Patents by Inventor Siegbert Knapp

Siegbert Knapp 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).

  • Method and apparatus for demodulating PSK modulated oscillations
    Patent number: 3970945
    Abstract: A method and apparatus for demodulating an input signal modulated according to the phase shift keying (PSK) modulation method wherein the modulated input signal is combined with a reference voltage of the same frequency which is leading in phase by one-quarter of the period duration of the input signal, the resulting output signal is delayed in time by one-half of the period duration of the input signal and is combined with an identical but undelayed signal to provide a control voltage, and the control voltage is utilized for setting the phase of a further reference voltage which is then combined with the input signal to produce the demodulated output voltage.
    Type: Grant
    Filed: October 29, 1974
    Date of Patent: July 20, 1976
    Assignee: Licentia Patent-Verwaltungs-G.m.b.H.
    Inventor: Siegbert Knapp