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Anisotropic reflection type electromagnetic metasurface-based broadband crossed polarized converter

An anisotropic and reflective technology, applied in the field of cross-polarization converters, can solve problems such as high incident angle requirements, high manufacturing technology requirements, and narrow operating frequency bands, and achieve wide practical range, wide application value, and different angles. sensitive effect

Inactive Publication Date: 2018-06-08
XIAMEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, these polarization converters have high requirements on the angle of incidence, complex structures, high requirements on manufacturing technology, and the working frequency band is too narrow

Method used

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  • Anisotropic reflection type electromagnetic metasurface-based broadband crossed polarized converter
  • Anisotropic reflection type electromagnetic metasurface-based broadband crossed polarized converter

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Embodiment Construction

[0020] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0021] Such as figure 1 As shown, the embodiment of the present invention has three layers in total, including a metal grating 1, a printed circuit board 2, and a metal thin film 3. Light is incident from a vacuum to the cross-polarization converter, resulting in anisotropic reflection.

[0022] Utilize a kind of specific embodiment of the present invention as follows: the material of metal grating is set as copper, and width is 2.0mm, and period is 10mm, and thickness is 0.035mm; The middle printed circuit board is dielectric material, and thickness is 4.0mm; The material is copper, the thickness is 0.035mm;

[0023] When the invention works, the electromagnetic wave at the source is normal incident or obliquely incident on the structure at a certain angle. After the action of the cross polarization converter, the phases of the reflected electric fiel...

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Abstract

The invention discloses an anisotropic reflection type electromagnetic metasurface-based broadband crossed polarized converter, and relates to a crossed polarized converter. The broadband crossed polarized converter consists of three layers of optical materials, including a one-dimensional metal grating, a printed circuit board and a metal film. The method comprises the following steps of (1) waveincoming: enabling linear polarized wave at the frequency of 8.7-13.2GHz to come to the metal grating directly or in an inclined manner; and (2) wave reflecting, wherein the wave reflected from the crossed polarized converter is the required reflective polarized wave. Anisotropic reflection of the anisotropic reflection type electromagnetic metasurface-based broadband crossed polarized converteralso can be generated in a relatively large incident angle, and can be adjusted by changing the geometric dimensions; and in addition, the provided crossed polarized converter has the advantages of relatively wide bandwidth, high efficiency and the like in multiple potential applications of a microwave instrument, wavefront treatment and polarized component and the like.

Description

technical field [0001] The invention relates to a cross-polarization converter, in particular to a broadband cross-polarization converter based on an anisotropic reflective electromagnetic metasurface. Background technique [0002] Cross-polarization converters, which change the polarization direction of the incident wave. The various physical mechanisms controlling the polarization state from microwave to visible light frequencies include wave plates, dichroic crystals, Brewster effect, Faraday materials and birefringence of anisotropic materials, etc. Some problems of traditional polarization control materials, such as large structural volume, narrow bandwidth, limited material selection, high price, etc., and artificial electromagnetic microstructure materials can achieve physical properties that natural materials do not have through structural design, which is a great opportunity for crossover. The design of polarization switching devices provides a new direction. An a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/24
CPCH01Q15/242
Inventor 宋争勇王凯柳清伙
Owner XIAMEN UNIV
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