Ultra-wideband polarization insensitive 3-bit random coding metasurface structure and design method

A technology of random coding and design method, applied in electrical components, antennas, etc., can solve the problem of insufficient bandwidth, and achieve the effects of wide bandwidth RCS reduction, good broadband stealth effect, and high polarization conversion rate.
CN110854537AInactive Publication Date: 2020-02-28NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Publication Date
2020-02-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an ultra-wideband polarization insensitive 3-bit random coding metasurface structure and a design method. Eight PCM units are arranged on a two-dimensional plane in a random coding mode to form a PCM array; phase responses of the eight PCM units differ by 22.5 degrees in sequence from low to high and are recorded as 000, 001, 010, 011, 100, 101, 110 and 111; each PCM unit is a double-arrow-shaped resonator and comprises a stub resonator and a V-shaped resonator; by adjusting a rotation angle of a double-arrow-shaped resonator and the length of arrows in the V-shaped resonator, control over the phase and amplitude of cross polarization reflection is achieved. A code is formed by adopting units with broadband polarization conversion properties, so electromagnetic waves can be scattered to all directions, and incident electromagnetic waves can be converted into another linearly polarized emergent waves which are in cross polarization with the incident electromagnetic waves; therefore, the radar cross section of a target can be remarkably reduced, and the good broadband stealth effect is achieved.
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Description

technical field

[0001] The invention relates to a novel artificial electromagnetic material, in particular to an ultra-broadband polarization-insensitive 3-bit random code metasurface structure and a design method. Background technique

[0002] Novel artificial electromagnetic materials (metamaterials) are artificial composite materials / structures with subwavelength periodic arrangements with widely tunable electromagnetic properties. Through metamaterials, people can realize the regulation of equivalent permittivity and permeability from "double positive" to "double negative", and then realize various abnormal effects such as negative refractive index, inverse Doppler effect, perfect transmission, etc. In recent years, researchers have made great progress in the mechanism research and practical application of metamaterials.

[0003] New artificial electromagnetic surfaces (metamaterials) are two-dimensional ultra-thin planar arrays composed of subwavelength unit structures...

Claims

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