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Design method of broadband reflection metasurface, and broadband reflection metasurface

A metasurface and broadband technology, applied in design optimization/simulation, antennas, electrical components, etc., can solve the problems of difficult to achieve effective control of the frequency division focus position, difficult to achieve broadband performance, etc., to achieve light weight, high cost, Prepare simple effects

Active Publication Date: 2021-04-02
ZHEJIANG UNIV HANGZHOU GLOBAL SCI & TECH INNOVATION CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, currently existing focusing metasurface structures usually only work in one target frequency or a specific frequency range, making it difficult to achieve broadband performance
In addition, when these metasurface structures realize the focusing function, it is difficult to effectively control the position of frequency division focusing

Method used

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  • Design method of broadband reflection metasurface, and broadband reflection metasurface
  • Design method of broadband reflection metasurface, and broadband reflection metasurface
  • Design method of broadband reflection metasurface, and broadband reflection metasurface

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Embodiment Construction

[0028] In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

[0029] The embodiment of the present disclosure constructs a broadband reflective metasurface based on a plurality of resonant units. When the electromagnetic wave is vertically incident on the reflective metasurfac...

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Abstract

The invention discloses a broadband reflection metasurface design method, and a broadband reflection metasurface. The broadband reflection metasurface design method comprises: sequentially connectinga plurality of resonance units, wherein each resonance unit is composed of a dielectric plate and copper sheets, and the sizes of the copper sheets in the resonance units are different; calculating reflection modulation phases generated when electromagnetic waves pass through a metasurface; and obtaining the copper sheet size corresponding to the reflection modulation phase according to a pre-simulated phase size comparison table. According to the broadband reflection metasurface disclosed by the invention, frequency separation can be carried out on broadband incident electromagnetic waves while the separated frequencies are respectively focused at different positions of a focal plane, the preparation is simple, the cost is low, and the achieving is easy.

Description

technical field [0001] The invention relates to the technical field of electromagnetic metasurfaces, in particular to a design method of a broadband reflection metasurface and the broadband reflection metasurface. Background technique [0002] Wavelength dispersion is an important feature in the design of optical components. For frequency-dependent devices, wavelength dispersion can be adjusted by properly adjusting the wavefront of electromagnetic waves. Existing wavefront control electromagnetic devices use natural or artificial electromagnetic materials to achieve multiple functions, such as focusing lenses and beam splitters. These traditional electromagnetic devices are heavy, complicated to manufacture, high in cost, and low in efficiency, which are greatly limited in practical applications. Metasurface is an ultra-thin component based on the principle of generalized Snell's law. In recent years, subwavelength structure electromagnetic control technology has been deve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00H01Q15/14G06F30/20
CPCH01Q15/0086H01Q15/141G06F30/20
Inventor 鲁焕郑斌蔡通陈红胜
Owner ZHEJIANG UNIV HANGZHOU GLOBAL SCI & TECH INNOVATION CENT