Incident wave anti-reflection glass based on transparent metal material and anti-reflection method

Abstract

The invention provides incident wave anti-reflection glass based on a transparent metal material. The anti-reflection glass comprises a grid pattern layer and a first transparent glass layer; the grid pattern layer comprises a plurality of metal grid patterns, each grid pattern comprises a square ring, and rectangular metal strips extend inwards from the four top corners of each square ring along the diagonal lines of the square ring; the plurality of grid patterns are sequentially arranged on the first side surface of the first transparent glass layer; and the square ring and the straight strip structure are made of metal grids or silver nano wires. According to the technical scheme, the transmission amplitudes of a TE polarization mode and a TM polarization mode of incident waves are greatly enhanced in a specified radio frequency band only by adhering the transparent anti-reflection film to the surface of the glass, so that the communication quality of indoor communication can be greatly improved through the technical scheme provided by the invention.

Description

technical field [0001] The invention belongs to the field of communication and new artificial electromagnetic materials, and in particular relates to an incident wave anti-reflection glass based on a transparent metal material and an anti-reflection method. Background technique [0002] With the development of 5G applications, the use of sub-6G bands and millimeter wave bands has become popular in communication applications. The poor transmission performance of ordinary pure glass at oblique incidence at large angles has a serious impact on the communication quality of indoor communications. Due to the existence of Brewster's angle, the attenuation of the transmission performance of the incident wave in the TM polarization mode is not significant in the case of oblique incidence at a large angle; but for the incident wave in the TE polarization mode, the transmission performance will increase with the increase of the incident angle. large and sharp decline. [0003] In ord...

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Problems solved by technology

[0006] 1. Its transparent conductive film - multi-layer aluminum nitride (AlN) and nano-silver (Ag) film is expensive to process, the process is complicated, it cannot be conformal, and the conductive film must be deposited on the glass, and the transparent conductive film cannot be prepared separately

[0007] 2. The design of the glass metasurface described in this paper requires the deposition of transparent conductive films on both sides of the glass, which limits the application scenarios of the glass metasurface

[0008] 3. The thickness of the glass medium plate of the glass metasurface described in this paper needs to be about 1 / 10 of the wavelength. If the design described in the paper is applied to the current mainstream sub6G communication band, the thickness of the glass medium plate needs to be around 10mm. The thickness far exceeds the thickness of automobile glass and high-speed rail glass, which limits its application scenarios

According to the reported data, NTT Docomo has designed a microwave anti-reflection glass in the millimeter wave band, but the medium of its anti-reflection metasurface is a hard dielectric plate, which is not conformable; and its thickness is relatively large, which limits its application

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