Patents by Inventor Hedwig Graebeldinger

Hedwig Graebeldinger 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).

  • Metamaterial having the capability of broadband left-hand guidance of electromagnetic waves
    Patent number: 7710336
    Abstract: A metamaterial having a negative refractive index is presented, which has a dielectric carrier material (12; 48), first electrically conductive sections (14.1, 14.2, 14.3, 14.4) and second electrically conductive sections (16.1, 16.2). The metamaterial is distinguished by the fact that the dielectric carrier material (12; 48) is realized as a volume which consists of one piece and which has at least one inner area which is prestructured by positive or negative rib or mesa structures (52.1, 52.2) in the dielectric carrier material (48) and is covered with first sections (14.1, 14.2, 14.3, 14.4) and second sections (16.1, 16.2) in such a way that the first sections form capacitive series impedances upon illumination with an electromagnetic wave having a specific propagation direction and polarization, while the second sections are arranged in such a way that they form inductive shunt impedances upon the illumination.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: May 4, 2010
    Assignee: Universitat Stuttgart
    Inventors: Heinz Schweizer, Hedwig Graebeldinger, Manfred Berroth, Harald Giessen, Axel Rumberg, Liwei Fu
  • Metamaterial Having the Capability of Broadband Left-Hand Guidance of Electromagnetic Waves
    Publication number: 20080291117
    Abstract: A metamaterial having a negative refractive index is presented, which has a dielectric carrier material (12; 48), first electrically conductive sections (14.1, 14.2, 14.3, 14.4) and second electrically conductive sections (16.1, 16.2). The metamaterial is distinguished by the fact that the dielectric carrier material (12; 48) is realized as a volume which consists of one piece and which has at least one inner area which is prestructured by positive or negative rib or mesa structures (52.1, 52.2) in the dielectric carrier material (48) and is covered with first sections (14.1, 14.2, 14.3, 14.4) and second sections (16.1, 16.2) in such a way that the first sections form capacitive series impedances upon illumination with an electromagnetic wave having a specific propagation direction and polarization, while the second sections are arranged in such a way that they form inductive shunt impedances upon the illumination.
    Type: Application
    Filed: September 15, 2006
    Publication date: November 27, 2008
    Applicant: Universitat Stuttgart
    Inventors: Heinz Schweizer, Hedwig Graebeldinger, Manfred Berroth, Harald Giessen, Axel Rumberg, Liwei Fu