Enz metasurface sandwich for multi-angle transmission of te and tm polarized waves

A metasurface, multi-angle technology, applied in antennas, electrical components, etc., to achieve the effect of easy implementation, efficient transmission, and simple structure

Active Publication Date: 2020-07-28
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in practice, ENZ metamaterials are often required to achieve high-efficiency transmission under the multi-angle incidence of different polarized electromagnetic waves. However, research at this stage shows that ENZ metamaterials can only meet the multi-angle transmission of TE polarized waves, and TM polarized electromagnetic waves in ENZ metamaterials can only transmit at close to vertical incidence, so it is a technical problem that needs to be solved to make ENZ metamaterials meet the high-efficiency transmission of both TE and TM polarized waves at multiple angles.

Method used

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  • Enz metasurface sandwich for multi-angle transmission of te and tm polarized waves
  • Enz metasurface sandwich for multi-angle transmission of te and tm polarized waves
  • Enz metasurface sandwich for multi-angle transmission of te and tm polarized waves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1, ENZ metamaterial substrate thickness t = 2mm metasurface interlayer.

[0031] This example includes two ENZ metamaterial substrates 1 and a periodic complementary aperture resonator plate 2. The periodic complementary aperture resonator plate 2 determines the transmission frequency of TE and TM polarized waves penetrating the ENZ metamaterial, and its transmission frequency f is given by the formula Determined, where L is the average of the sum of the lengths of the two resonant rings, ε eff is the equivalent dielectric constant of the microstrip dielectric plate. Among them, the thickness t of the metamaterial substrate 1 is 2mm, the relative permittivity is 0.01, the loss tangent is 0, and the distance d from the periodic complementary aperture resonator plate 2 is 2mm, the thickness t of the metamaterial substrate 1, and its relationship with the periodic The distance d of the complementary aperture resonator affects the transmission frequency and ban...

Embodiment 2

[0032] Embodiment 2, ENZ metamaterial substrate thickness t=1mm metasurface interlayer.

[0033] The structure of this instance is the same as that of instance 1, and the following parameters remain unchanged:

[0034] The relative permittivity of the metamaterial substrate 1 is 0.01, and the loss tangent is 0;

[0035] The thickness e of the dielectric substrate of the periodic complementary aperture resonator plate is 0.5 mm, and the dielectric constant is 2.65;

[0036] The long side a=8mm of metal nugget 3, wide side h=8mm;

[0037] The width g of the two C-ring gaps is 0.5mm, the opening distance f is 2mm, and the distance b between the larger C-ring gap on the outside and the center is 2.5mm, and the distance between the smaller C-ring gap and the center on the inside c is 1.5 mm.

[0038] In this example, only the following parameters are changed:

[0039] The thickness t of the metamaterial substrate 1 is 1 mm;

[0040] The distance d between the metamaterial subs...

Embodiment 3

[0041] Embodiment 3, a metasurface with an ENZ metamaterial substrate thickness t=1.5 mm.

[0042] The structure and most of the parameters of this example are the same as Example 1, only the following parameters have been changed:

[0043]The thickness t of the metamaterial substrate 1 is 1.5 mm;

[0044] The distance d between the metamaterial substrate 1 and the periodic complementary aperture resonator plate 2 is 1 mm.

[0045] The technical effects of the present invention will be further described in detail below in combination with the results of simulation experiments.

[0046] 1. Simulation conditions:

[0047] The present invention uses CST Microwave Studio electromagnetic simulation software to carry out full-wave simulation on the ENZ metamaterial substrate and the relationship between the transmission coefficient and incident angle of TE and TM polarized electromagnetic waves under the present invention.

[0048] 2. Simulation content:

[0049] Simulation 1, s...

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Abstract

The invention discloses an ENZ metasurface sandwiched layer for multi-angle transmission of TE and TM polarization waves. By the ENZ metasurface sandwiched layer, the problem that an ENZ metamaterialis difficult to efficiently transmit during incidence of an existing TM polarization electromagnetic wave at an angle and incidence of an existing TE polarization electromagnetic wave at an angle is mainly solved. The ENZ metasurface sandwiched layer comprises two ENZ metamaterial substrates (1) and a periodic complementary opening resonant plate (2) which are equal in size, the periodic complementary opening resonant plate is arranged between the ENZ metamaterial substrates to form a sandwiched layer structure, N periodic small blocks (3) are divided on a metal surface of the complementary opening resonant plate (2) and are connected to one another, and a dual-C loop gap is etched on each small block and is in a way that two C-shaped loop gaps with different sizes are embedded and are opposite in opening directions. By the ENZ metasurface sandwiched layer, large-angle transmission of the TE polarization wave and the TM polarization in the ENZ metamaterial at incident angles of 0-80 degrees can be achieved, the ENZ metasurface is simple in structure and can be used for efficiently transmitting the TE polarization wave and the TM polarization wave in the ENZ metamaterial at angles.

Description

technical field [0001] The invention belongs to the technical field of microwave materials, and relates to an ENZ metasurface interlayer, which can be used for angle-efficient transmission of TE and TM polarized waves in metamaterials with a dielectric constant approaching zero (ENZ). [0002] technical background [0003] The dielectric constant tends to be zero ENZ metamaterial is a new type of artificial electromagnetic material with low refractive index, high phase velocity, near zero phase shift, and high directional electromagnetic properties. Based on the electromagnetic properties of ENZ metamaterials, many new electromagnetic devices can be designed, such as ENZ metamaterial radome design, etc., using the high orientation of ENZ metamaterials, the radome can effectively improve the antenna gain. [0004] In the field of airborne radome, it is often required that the radome can realize the efficient transmission of electromagnetic waves under different incident angles...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q15/00
Inventor 杨锐陈永朝杨佩李佳成高东兴闫诗义雷振亚
Owner XIDIAN UNIV
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