Metamaterials for surfaces and waveguides

US9768516B2 · kind B2 · utility

Assignee

• Duke University · US

Inventors

• David R. Smith · Durham, US
• Ruopeng Liu · Tangxia, CN
• Tie Jun Cui · Nanjing, CN
• Qiang Cheng · Shanghai, CN
• Jonah Gollub · Durham, US

Key dates

• Filing date: Dec 4, 2014
• Grant date: Sep 19, 2017
• Expiry date: Jun 12, 2035

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01Q15/0086
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

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.