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Coding phase gradient metasurface based on Pancharatnam-Berry phase

A phase gradient and metasurface technology, applied in electrical components, antennas, etc., can solve the problems of no electromagnetic characteristics, difficult to encode the phase modulation of the unit, etc., and achieve the effects of convenient processing, simple and easy design principles, and flexible and diverse control.

Inactive Publication Date: 2017-05-10
AIR FORCE UNIV PLA
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  • Abstract
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Problems solved by technology

The existing encoding metasurface, because its phase recovery is realized by the resonance of structural units of different shapes and sizes, it is difficult to perform phase modulation inside the encoding unit, so the encoding unit is composed of equal phase structural units, without separate electromagnetic properties

Method used

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  • Coding phase gradient metasurface based on Pancharatnam-Berry phase
  • Coding phase gradient metasurface based on Pancharatnam-Berry phase
  • Coding phase gradient metasurface based on Pancharatnam-Berry phase

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Embodiment Construction

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0026] Reference figure 1 , Is a Pancharatnam-Berry phase-based encoded phase gradient metasurface provided in an embodiment of the present invention. The encoded phase gradient metasurface 100 is composed of multiple encoding units 200, mn Is the phase recovery of each encoding unit 200, where m and n respectively represent the number of rows and columns of the encoding unit 200 in the encoding phase gradient metasurface 100. Each enco...

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Abstract

The invention discloses a coding phase gradient metasurface based on a Pancharatnam-Berry phase. By taking a phase gradient metasurface as a coding unit, internal phase modulation of the coding unit can be realized; by performing modulation on the internal phase gradient in the coding unit, different effects, such as abnormal reflection, focusing, imaging and the like, can be realized; by performing sequential combination on designed coding units with special electromagnetic characteristics, different effects can be generated; according to the coding phase gradient metasurface based on the Pancharatnam-Berry phase, more flexible control on electromagnetic wave can be realized from two aspects of the coding unit and the coding sequence; the coding phase gradient metasurface has the advantages of easy operation in design, convenience in applying, easy processing and manufacturing, and the like; and the ; the coding phase gradient metasurface has significant application prospect in the aspects of antenna, imaging, reduction of radar scattering area, and the like.

Description

Technical field [0001] The present invention relates to the technical field of electromagnetic materials, in particular to an encoded phase gradient metasurface based on Pancharatnam-Berry phase. Background technique [0002] Electromagnetic coding metamaterials, also known as digital electromagnetic metamaterials, have received widespread attention since they were proposed to digitize the control of electromagnetic waves. Existing coded metasurfaces usually use basic units of different structures, shapes, and sizes to achieve different phase recovery through resonance, and the different phase recovery is characterized by binary codes. For example, in a one-bit electromagnetic coding metamaterial, two different basic units are selected, with a phase difference of about 180 degrees, and the two basic units are binary coded into coding unit "0" and coding unit "1". Arrange the coding units "0" and "1" according to the designed sequence to achieve the required functions. Existing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0086
Inventor 王甲富李勇峰郑齐齐张介秋马华屈绍波王军庞永强
Owner AIR FORCE UNIV PLA
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