Patents by Inventor Heinz-Juergen Siweris

Heinz-Juergen Siweris 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).

  • Monostatic homodyne radar system
    Patent number: 5872537
    Abstract: Monostatic homodyne radar system, in particular for continuous wave operation, in which one input port of a balanced mixer (2) is connected to an oscillator (1) and another input port of the mixer is connected to an antenna (3). The mixer has a directional coupler with a 90.degree. phase difference between the coupling arms. The load impedances of the coupling arms have a reflection factor greater than 0.3, so that coupling of the power supplied from the oscillator to the antenna ensues, which coupling is sufficient for the radiation.
    Type: Grant
    Filed: March 19, 1997
    Date of Patent: February 16, 1999
    Assignee: Siemens Aktiengesellschaft
    Inventor: Heinz-Juergen Siweris