Single-layer meta-material surface structure capable of realizing angle-selective filtering through filtering frequency change

A technology of frequency selection and surface structure, applied in electrical components, antennas, etc., can solve problems such as heavy workload, reduced antenna work efficiency, complex structure, etc., to achieve the effect of simplifying structure, easy to optimize design, and less structural parameters

Active Publication Date: 2016-09-21
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of radome needs to adjust the frequency of multiple FSSs at the same time, and the workload is large. Moreover, because the active FSS introduces a diode and a feed network for adjusting the bias voltage of the diode, the structure is relatively complicated, and the metal feeder will affect the transmitted wave power. and the resonance characteristics of FSS, which reduces the working efficiency of the antenna

Method used

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  • Single-layer meta-material surface structure capable of realizing angle-selective filtering through filtering frequency change
  • Single-layer meta-material surface structure capable of realizing angle-selective filtering through filtering frequency change
  • Single-layer meta-material surface structure capable of realizing angle-selective filtering through filtering frequency change

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1, a metamaterial surface structure with a wave-transmitting frequency range of 8.99 GHz to 9.54 GHz.

[0035] Each single-layer metasurface gap unit 2 in this example includes a dielectric substrate 21 and a metal patch 22 .

[0036] The dielectric substrate 21 adopts a square organic polymer substrate with a side length d of 8 mm, a thickness h of 0.5 mm, and a dielectric constant of 2.65;

[0037] The metal patch 22 adopts a metal copper material with a side length d of 8 mm, on which an annular gap with upper and lower asymmetrical double openings is etched, and the upper opening width of the annular gap is d 1 0.1mm, the lower opening d of the annular gap 2 0.3mm, the outer diameter r of the annular gap 1 is 3.9mm, the inner diameter r of the annular gap 2 is 3.8mm, and the width w of the annular gap is 0.1mm.

[0038] Each single-layer metasurface slit unit 2 is closely arranged on the single-layer metamaterial surface 1 in the form of M×N matrix, and...

Embodiment 2

[0039] Embodiment 2, a metamaterial surface structure with a wave-transmitting frequency range of 12.08 GHz to 12.4 GHz.

[0040] The structure of this example is the same as that of Example 1, and its parameters are changed as follows:

[0041] The dielectric substrate 21 adopts a square organic polymer substrate with a side length d of 8 mm, a thickness h of 0.6 mm, and a dielectric constant of 3.27;

[0042] The metal patch 22 adopts a metal copper material with a side length d of 8 mm, and the opening width d on the annular gap is 1 1mm, opening d under the annular gap 2 is 2.5mm, the outer diameter of the annular gap r 1 is 3.5mm, the inner diameter of the annular gap r 2 is 3.1mm, and the width w of the annular gap is 0.4mm.

[0043] This example can realize that the wave transmission angle θ changes from 0° to 60° with the wave transmission frequency of 12.08GHz to 12.4GHz.

Embodiment 3

[0044] Embodiment 3, a metamaterial surface structure with a wave-transmitting frequency range of 15.51 GHz to 16.26 GHz.

[0045] The structure of this example is the same as that of Example 1, and its parameters are changed as follows:

[0046] The dielectric substrate 21 adopts a square organic polymer substrate with a side length d of 8 mm, a thickness h of 0.8 mm, and a dielectric constant of 4.4;

[0047] The metal patch 22 adopts a metal copper material with a side length d of 8 mm, and the opening width d on the annular gap is 1 3.7mm, opening d under the annular gap 2 is 4mm, the outer diameter r of the annular gap 1 is 3.9mm, the inner diameter r of the annular gap 2 is 2mm, and the width w of the annular gap is 1.9mm.

[0048] This example can realize the change of the wave transmission angle θ from 0° to 60° with the wave transmission frequency of 15.51 GHz to 16.26 GHz.

[0049] The technical effects of the present invention will be further described in detai...

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Abstract

The invention provides a single-layer meta-material surface structure capable of realizing angle-selective filtering through filtering frequency change and mainly solves a problem of inconvenient electromagnetic wave filtering angle adjustment in the prior art. A single-layer meta-material surface comprises multiple single-layer meta-surface slit units (2) arranged in a periodic mode, each single-layer meta-surface slit unit comprises a medium substrate (21) and a metal paster (22), the medium substrate (21) is prepared by employing a square organic high-molecular polymer substrate with thickness of 0.5-0.8mm and the relative dielectric constant of 2.65-4.4, the metal paster (22) is printed on the medium substrate (21), an annular slit which is vertically etched, is asymmetric and has double openings is etched on the metal paster (22), and the metal paster (22) is used for realizing angle-selective filtering under a single frequency band to make an electromagnetic wave filtering angle generate offset along with change of meta-surface filtering frequency. The surface structure is advantaged in that the structure is simple, processing is convenient, and the surface structure can be applied to design of a multi-function antenna cover.

Description

technical field [0001] The invention belongs to the technical field of frequency control devices, and in particular relates to a metamaterial surface structure, which can be used in the design of a multifunctional radome. technical background [0002] The metamaterial surface with frequency-selective wave transmission angle is a frequency-selective surface FSS that achieves angle-selective wave transmission by changing the wave-transmission frequency. Because it can show the frequency-selective characteristics of full transmission for incident electromagnetic waves, it can be effectively used in radomes. design field. [0003] Generally, the radome design based on FSS has the characteristics of frequency selection and stability, and can meet the stability of different incident angles and different polarizations during wide-angle scanning. Chinese patent application, authorized announcement number 103219568B, titled "Broadband Frequency Selector", discloses a FSS structure w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0086
Inventor 杨锐杨佩苏赫陈永朝雷振亚王青
Owner XIDIAN UNIV
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