Patents by Inventor Karl Henrik Kratz

Karl Henrik Kratz 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).

  • Substrate integrated waveguide
    Patent number: 8669834
    Abstract: A substrate integrated waveguide (10) comprises a top conductive layer (14) and a bottom conductive layer (15) provided on either sides a substrate (11). At least one wall (12, 13) of conductive material is provided in the substrate (11) to define, together with the top and bottom layers (14, 15), the waveguide. The at least one wall (12, 13) comprise a multitude of thin conductive wires densely arranged close to each other in the substrate (11) and having respective short ends connected to the top and bottom layers (14, 15). The high number of wires per surface unit in the wall (12, 13) effectively prevent significant amount of power leakage through the wall (12, 13) during operation of the substrate integrated waveguide (10).
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: March 11, 2014
    Inventors: Shi Cheng, Karl Henrik Kratz, Hanna Ali Yousef
  • Substrate Integrated Waveguide
    Publication number: 20110018657
    Abstract: A substrate integrated waveguide (10) comprises a top conductive layer (14) and a bottom conductive layer (15) provided on either sides a substrate (11). At least one wall (12, 13) of conductive material is provided in the substrate (11) to define, together with the top and bottom layers (14, 15), the waveguide. The at least one wall (12, 13) comprise a multitude of thin conductive wires densely arranged close to each other in the substrate (11) and having respective short ends connected to the top and bottom layers (14, 15). The high number of wires per surface unit in the wall (12, 13) effectively prevent significant amount of power leakage through the wall (12, 13) during operation of the substrate integrated waveguide (10).
    Type: Application
    Filed: March 17, 2009
    Publication date: January 27, 2011
    Inventors: Shi Cheng, Karl Henrik Kratz, Hanna Ali Yousef