Metamaterials for surfaces and waveguides

US10461433B2 · 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: Aug 21, 2009
• Grant date: Oct 29, 2019
• Expiry date: Aug 12, 2032

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.