Patents by Inventor Andreas Steffen

Andreas Steffen 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).

  • Pulse compression radar system with data transmission capability
    Patent number: 5093663
    Abstract: A radar system, such as a tracking radar installation or other radar installation which is of the pulse compression type, transmits data during transmission of the radar signal. The data is transmitted by inserting, into the radar signal, at least one short nonpulse interval. The position of the nonpulse interval within the radar pulse can be modulated.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: March 3, 1992
    Assignee: Siemens-Albis Aktiengesellschaft
    Inventors: Rolf Baechtiger, Andreas Steffen
  • Expander system for pulse signals
    Patent number: 4891599
    Abstract: An expander system for pulse signals with enhanced output power level is disclosed. The expander system, which comprises an expander filter and subsequently connected amplifier means, is provided with a supplementary 180 degree phase modulator connected in front of the expander filter. The phase modulator is switched on and off by a control signal delivered from a control stage in such a manner that, during the duration of a pulse signal, the phase modulator produces at least two phase shifts of approximately 180 degrees.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: January 2, 1990
    Assignee: Siemens-Albis, AG
    Inventors: Alfred Lauper, Andreas Steffen
  • Expander system for pulse signals
    Patent number: 4812771
    Abstract: An expander system for pulse signals with enhanced output power level is disclosed. The expander system, which comprises an expander filter and subsequently connected amplifier means, is provided with a supplementary 180 degree phase modulator connected in front of the expander filter. The phase modulator is switched on and off by a control signal delivered from a control stage in such a manner that, during the duration of a pulse signal, the phase modulator produces at least two phase shifts of approximately 180 degrees.
    Type: Grant
    Filed: June 19, 1986
    Date of Patent: March 14, 1989
    Assignee: Siemens-Albis
    Inventors: Alfred Lauper, Andreas Steffen