Metasurface array antenna based on phase gradient

An array antenna and phase gradient technology, applied to antennas, antenna arrays, electrical components, etc., can solve problems such as difficulty in controlling the reflected beam angle of electromagnetic waves, reduction of antenna beam gain, and unfavorable wireless communication, achieving excellent transmission and maintaining transmission. , the effect of good accuracy

Active Publication Date: 2020-12-25
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult for existing array antennas to control the reflected beam angle of electromagnetic waves, resulting in a decrease in antenna beam gain, which is extremely unfavorable to wireless communication

Method used

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  • Metasurface array antenna based on phase gradient
  • Metasurface array antenna based on phase gradient
  • Metasurface array antenna based on phase gradient

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Embodiment 1: based on the phase gradient metasurface array antenna, such as Figure 1-4 and Figure 14 As shown, the array antenna is composed of three array phase plates 1 arranged in sequence; the array phase plate 1 includes 8 vertical unit columns arranged by 45° phase difference covering 2π, and each vertical unit column 2 is composed of a plurality of phase shifting units 3 Arrangement composition, the phase shifting unit 3 includes a laminated first dielectric layer 4 and a second dielectric layer 5, the material of the first dielectric layer 4 and the second dielectric layer 5 is polytetrafluoroethylene, and the length and width are 2mm, the thickness is 0.6mm, and the dielectric constant is 2.5; the back surface of the second dielectric layer 5 is provided with a patch bottom layer 6, and the length and width of the patch bottom layer 6 are both 2mm, and the thickness is 0.1mm; A patch layer 7 is provided between the first dielectric layer 4 and the second di...

Embodiment 2

[0034] Embodiment 2: on the basis of embodiment 1, as Figure 15 As shown, the middle part of the four edges of the patch bottom layer 6 is respectively provided with a wave-shaped topological boundary 11; the four corners of the patch bottom layer 6 are respectively provided with a lattice of transmission holes 12, and the lattice of transmission holes at each corner 12 is in the shape of a regular triangular matrix; an array grid is formed between the four transmission hole lattices 12 . In the present invention, a wavy topological boundary is arranged in the middle of the four edges of the bottom layer 6 of the patch; the topological boundary can be in the frequency range of terahertz, and a gapless boundary state will appear in the system energy band with a limited size. The boundary state allows the terahertz absorber to maintain excellent transmission performance under the interference of impurities or structural defects on the surface of the dielectric layer, which has ...

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Abstract

The invention discloses a metasurface array antenna based on phase gradient. The array antenna is formed by arranging a plurality of array phase plates. Each array phase plate comprises eight verticalunit columns which cover 2pi arrangement according to 45-degree phase difference, and each vertical unit column is formed by arranging a plurality of phase shift units. Each phase shift unit comprises a first dielectric layer and a second dielectric layer which are stacked. A patch bottom layer is arranged on the rear surface of each second dielectric layer Patch layers are arranged between the first dielectric layers and the second dielectric layers and on the front surfaces of the first dielectric layers. Each patch layer comprises three strip-shaped patches which are arranged in parallel at intervals, and vertical strip patches are arranged among the strip-shaped patches in the vertical direction. The widths of the vertical strip patches range from 0.056 to 0.804 along with the phase difference between adjacent unit columns. A reflected wave beam can be deflected at a certain angle, so that the effect of controlling the angle of the reflected wave beam is achieved, and the accuracyis high.

Description

technical field [0001] The invention relates to a metasurface array antenna based on a phase gradient, and belongs to the technical field of antennas. Background technique [0002] Since Hertz in Germany established the first antenna system in 1886, the antenna family has a development history of more than 130 years. Nowadays, various antennas emerge in an endless stream to meet people's different life needs. Different types of antennas play a role in their respective fields. Crucial role. However, in different communication environments, the performance requirements of the designed antenna are also different. For example, in mobile phone wireless communication, it must be small and precise, with high reflection and projection efficiency and wide bandwidth. For example, in the design of array antennas, the use of metamaterials can greatly enhance the efficiency, gain and other properties of the antenna. Therefore, the design and research of metamaterial antennas has become...

Claims

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Application Information

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IPC IPC(8): H01Q3/30H01Q19/10H01Q21/00
CPCH01Q3/30H01Q19/10H01Q21/00Y02D30/70
Inventor徐弼军童鑫
OwnerZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY