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design method for metasurface with generalized Brewster effect

A design method, Brewster's technology, applied to electrical components, antennas, etc., can solve problems such as polarization sensitivity, and achieve the effect of improving receiver signal-to-noise ratio and efficient energy directional collection.

Active Publication Date: 2019-12-06
HARBIN INST OF TECH
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Problems solved by technology

[0004] Aiming at the problem that the application of the existing classical Brewster effect is limited to parallel polarized electromagnetic waves and is sensitive to polarization, the present invention provides a metasurface design method for the generalized Brewster effect

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  • design method for metasurface with generalized Brewster effect
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  • design method for metasurface with generalized Brewster effect

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specific Embodiment approach 1

[0055] Specific implementation mode one, combination figure 1 and figure 2 As shown, the present invention provides a generalized Brewster effect metasurface design method, including:

[0056] According to the mathematical expression of Brewster's angle at the interface of anisotropic media, the basic conditions to be met by the element metasurface are obtained;

[0057] Then construct the unit super-surface structure capable of generating a predetermined amount of magnetic response under the excitation of the magnetic field according to the basic conditions;

[0058] Combining a plurality of the unit super-surface structures sequentially to form a super-surface layer;

[0059] A plurality of metasurface layers are sequentially arranged at intervals in a predetermined direction to form a grid-shaped metasurface that satisfies the Brewster effect of vertical and parallel polarized electromagnetic waves;

[0060] The placement orientation of the grid-shaped metasurface is perpendicular ...

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Abstract

The invention discloses a design method for a metasurface with a generalized Brewster effect, and belongs to the technical field of electromagnetic fields and microwaves. The invention aims to solve the problems that the application of the existing classical Brewster effect is limited by parallel polarization electromagnetic waves and is sensitive to polarization. The method comprises the steps: according to a mathematical expression of a Brewster angle at an anisotropic medium interface, obtaining basic conditions required to be met by a unit metasurface; constructing a unit metasurface structure capable of generating a predetermined amount of magnetic response under the excitation of a magnetic field according to the basic conditions; sequentially combining the plurality of unit metasurface structures together to form a metasurface layer; sequentially arranging the metasurface layers at intervals in the preset direction, and forming a grid-shaped metasurface meeting the vertical andparallel polarization electromagnetic wave Brewster effect, wherein the grid-shaped metasurface is placed in the direction perpendicular to the medium interface and an electromagnetic wave incident plane. The method is used for designing a metasurface meeting the generalized Brewster effect.

Description

Technical field [0001] The invention relates to a metasurface design method of the generalized Brewster effect, and belongs to the technical field of electromagnetic field and microwave. Background technique [0002] Since Sir David Brewster and Malus observed and explained the Brewster effect, the classic Brewster effect has been widely used in the fields of optics, terahertz and even microwaves. . Common applications at present include: polarizers, beam splitting prisms, Brewster angle microscopy, measurement of optical properties of media, angle selection absorbers, and optical supertransmission phenomena. However, these applications based on the classic Brewster effect are often limited to parallel polarization (TM polarization, also known as p polarization) electromagnetic waves. For example, in most typical laser resonator cavities, the Brewster window functions as a polarizer, and the final laser light can only be p-polarized (TM-polarized) light. The reason for this po...

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Application Information

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IPC IPC(8): H01Q15/00
CPCH01Q15/0086
Inventor 祁嘉然王常会尹诗雄
Owner HARBIN INST OF TECH
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