Patents by Inventor Tie Jun Cui

Tie Jun Cui 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).

  • Patent number: 10461433
    Abstract: Complementary metamaterial elements provide an effective permittivity and/or permeability for surface structures and/or waveguide structures. The complementary metamaterial resonant elements may include Babinet complements of “split ring resonator” (SRR) and “electric LC” (ELC) metamaterial elements. In some approaches, the complementary metamaterial elements are embedded in the bounding surfaces of planar waveguides, e.g. to implement waveguide based gradient index lenses for beam steering/focusing devices, antenna array feed structures, etc.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: October 29, 2019
    Assignee: Duke University
    Inventors: David R. Smith, Ruopeng Liu, Tie Jun Cui, Qiang Cheng, Jonah N. Gollub
  • Patent number: 10461434
    Abstract: Complementary metamaterial elements provide an effective permittivity and/or permeability for surface structures and/or waveguide structures. The complementary metamaterial resonant elements may include Babinet complements of “split ring resonator” (SRR) and “electric LC” (ELC) metamaterial elements. In some approaches, the complementary metamaterial elements are embedded in the bounding surfaces of planar waveguides, e.g. to implement waveguide based gradient index lenses for beam steering/focusing devices, antenna array feed structures, etc.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: October 29, 2019
    Assignee: Duke University
    Inventors: David R. Smith, Ruopeng Liu, Tie Jun Cui, Qiang Cheng, Jonah N. Gollub
  • Patent number: 9971063
    Abstract: Broadband metamaterial apparatus, methods, systems, and computer readable media are disclosed, as well as exemplary embodiments that provide cloaking, beam steering, and beam focusing. In one exemplary implementation, a broadband interface structure has a front surface region and a back surface region. The broadband interface structure is arranged to provide electromagnetic energy characteristic of an apparent profile of the back surface region substantially different than an actual profile of the back surface region for electromagnetic energy received at the front surface region.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: May 15, 2018
    Assignee: Duke University
    Inventors: David R. Smith, Ruopeng Liu, Qiang Cheng, Yao Qin, Tie Jun Cui
  • Publication number: 20180069318
    Abstract: Complementary metamaterial elements provide an effective permittivity and/or permeability for surface structures and/or waveguide structures. The complementary metamaterial resonant elements may include Babinet complements of “split ring resonator” (SRR) and “electric LC” (ELC) metamaterial elements. In some approaches, the complementary metamaterial elements are embedded in the bounding surfaces of planar waveguides, e.g. to implement waveguide based gradient index lenses for beam steering/focusing devices, antenna array feed structures, etc.
    Type: Application
    Filed: September 18, 2017
    Publication date: March 8, 2018
    Inventors: David R. Smith, Ruopeng Liu, Tie Jun Cui, Qiang Cheng, Jonah N. Gollub
  • Patent number: 9768516
    Abstract: Complementary metamaterial elements provide an effective permittivity and/or permeability for surface structures and/or waveguide structures. The complementary metamaterial resonant elements may include Babinet complements of “split ring resonator” (SRR) and “electric LC” (ELC) metamaterial elements. In some approaches, the complementary metamaterial elements are embedded in the bounding surfaces of planar waveguides, e.g. to implement waveguide based gradient index lenses for beam steering/focusing devices, antenna array feed structures, etc.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: September 19, 2017
    Assignee: Duke University
    Inventors: David R. Smith, Ruopeng Liu, Tie Jun Cui, Qiang Cheng, Jonah N. Gollub
  • Publication number: 20150116187
    Abstract: Complementary metamaterial elements provide an effective permittivity and/or permeability for surface structures and/or waveguide structures. The complementary metamaterial resonant elements may include Babinet complements of “split ring resonator” (SRR) and “electric LC” (ELC) metamaterial elements. In some approaches, the complementary metamaterial elements are embedded in the bounding surfaces of planar waveguides, e.g. to implement waveguide based gradient index lenses for beam steering/focusing devices, antenna array feed structures, etc.
    Type: Application
    Filed: December 4, 2014
    Publication date: April 30, 2015
    Inventors: David R. SMITH, Ruopeng LIU, Tie Jun CUI, Qiang CHENG, Jonah N. GOLLUB
  • Publication number: 20100156573
    Abstract: Complementary metamaterial elements provide an effective permittivity and/or permeability for surface structures and/or waveguide structures. The complementary metamaterial resonant elements may include Babinet complements of “split ring resonator” (SRR) and “electric LC” (ELC) metamaterial elements. In some approaches, the complementary metamaterial elements are embedded in the bounding surfaces of planar waveguides, e.g. to implement waveguide based gradient index lenses for beam steering/focusing devices, antenna array feed structures, etc.
    Type: Application
    Filed: August 21, 2009
    Publication date: June 24, 2010
    Applicant: Duke University
    Inventors: David R. Smith, Ruopeng Liu, Tie Jun Cui, Qiang Cheng, Jonah N. Gollub