WO2012129941A1

WO2012129941A1 - Metamaterial

Info

Publication number: WO2012129941A1
Application number: PCT/CN2011/084435
Authority: WO
Inventors: 刘若鹏; 赵治亚; 孙豪文; 缪锡根
Original assignee: 深圳光启高等理工研究院; 深圳光启创新技术有限公司
Priority date: 2011-03-25
Filing date: 2011-12-22
Publication date: 2012-10-04

Abstract

A metamaterial comprising multiple metamaterial functional boards (100) arranged in an array. Each metamaterial functional board (100) comprises a dielectric substrate (101) and multiple artificial microstructures (102) arrayed on the dielectric substrate (101). The dielectric substrate (101) is provided with a non-uniform dielectric constant distribution. The non-uniform dielectric constant distribution of the metamaterial provides the metamaterial with increased number of functional applications.

Description

Super material

[Technical Field]

The present invention relates to a metamaterial, and in particular to a supermaterial having a non-uniform dielectric constant. 【Background technique】

The metamaterial is generally formed by laminating a plurality of metamaterial functional panels or by other regular arrays. The metamaterial functional panel comprises a dielectric substrate and a plurality of artificial microstructures arrayed on the dielectric substrate, and the existing metamaterial dielectric substrate is a uniform material. Organic or inorganic substrates such as FR4, TP 1 and the like. The plurality of artificial microstructures of the array on the dielectric substrate have specific electromagnetic characteristics and can generate electromagnetic response to an electric field or a magnetic field. By accurately designing and controlling the structure and arrangement of the artificial microstructures, the metamaterials can be presented in various kinds. Electromagnetic properties not found in general materials, such as convergence, divergence, and deflection of electromagnetic waves. The existing dielectric substrate is used as a fixed substrate of an artificial microstructure, and since it has a uniform dielectric constant and magnetic permeability as a whole, it does not have a unique response to an electric field or a magnetic field, that is, for the entire metamaterial, the dielectric substrate is not With electromagnetic modulation.

[Summary of the Invention]

The technical problem to be solved by the present invention is to overcome the shortcomings of the lack of functional function of the dielectric substrate of the prior supermaterial, and to provide a metamaterial having a non-uniform dielectric constant distribution of the dielectric substrate, which is modified by changing the dielectric constant of the dielectric substrate. The material has been expanded in function.

The technical solution for achieving the object of the present invention is a metamaterial comprising a plurality of arrays of metamaterial functional board metamaterial functional boards comprising a dielectric substrate and a plurality of artificial microstructures arrayed on the dielectric substrate, the dielectric substrate having non-uniformity The dielectric constant distribution.

As a new material with special response and modulation characteristics to electromagnetic waves, metamaterials are composed of a plurality of super-material functional plate arrays. The artificial microstructure and the dielectric substrate on which it is located can be regarded as the basic components of the super-material function board. Structural unit, the nature of the metamaterial function board depends mainly on multiple basic knots The electromagnetic properties and array laws of the structural unit. The electromagnetic properties of a single basic structural unit are mainly determined by the equivalent dielectric constant and equivalent magnetic permeability of the basic structural unit, and the equivalent dielectric constant and equivalent magnetic permeability of a single basic structural unit are determined by the artificial microstructure and The dielectric substrate on which it is located is determined jointly. The existing design of metamaterial functional panels is to change the equivalent dielectric constant and equivalent magnetic permeability of a single basic structural unit by changing the structure or size of the artificial microstructure. Finally, a plurality of basic structural units are subjected to a certain law. Arrangement allows the metamaterial function panel to form certain electromagnetic properties, such as electromagnetic modulation for electromagnetic wave convergence, divergence, deflection, and translation.

The present invention expands the functional design of the metamaterial functional panel by designing the dielectric substrate to be composed of a plurality of substrate units of different materials, or / and designing the thickness of each substrate unit to be non-uniformly distributed. On the one hand, the dielectric constants in the respective substrate units are different due to different materials. On the other hand, due to the different thickness of each substrate unit, the ratio of the dielectric substrate to the metamaterial basic structural unit in each substrate unit will be Differently, this change in ratio changes the equivalent dielectric constant of the basic structural unit of the metamaterial. Therefore, by using the metamaterial dielectric substrate of the present invention, the local dielectric constant of the entire metamaterial can be changed to expand the application of the metamaterial.

In a specific implementation, the shape of the substrate unit may be arbitrarily designed as needed, depending on the shape of the target region whose dielectric constant is to be changed.

As one of the specific embodiments, the dielectric substrate is a convex ellipsoid or a concave ellipsoid.

As one of the specific embodiments, the side surface of the dielectric substrate is disposed in a plurality of return structures or annular structures, and the thickness of the plurality of return structures or annular structures is different; preferably, the thickness of the plurality of return structures or annular structures is stepped distributed.

As one of the specific embodiments, the substrate unit may be designed as a plurality of return structures or annular structures. After the plurality of return structures or annular structures constitute the dielectric substrate, different substrate units are different materials or/and have different The thickness is such that the dielectric constant of the entire dielectric substrate is non-uniformly distributed.

As a specific embodiment, the dielectric constants of the plurality of return structures or the basic units of the annular structure may be increased or decreased by a gradient, or may be alternately distributed in size.

In the specific implementation of the present invention, it is necessary to select different substrates as the material of the substrate unit according to the dielectric constant distribution of the entire dielectric substrate, and flexibly can be flexibly selected from various ceramic substrates, plastic resin substrates or according to the difference in dielectric constant. The choice of composite substrate is therefore extensive material selectivity. The beneficial effects of the present invention are that by designing the dielectric substrate to be composed of different materials and/or substrate units of different thicknesses, the metamaterial has a non-uniform dielectric constant distribution, providing a richer functional application for the metamaterial.

[Description of the Drawings]

Figure 1. Schematic diagram of the structure of the metamaterial.

Figure 2, Example 1 Overall structural view of the metamaterial.

Figure 3 is a structural view of a dielectric substrate of Embodiment 1.

Figure 4 is a diagram showing the overall structure of the supermaterial of the embodiment 2.

Figure 5 is a structural view of a dielectric substrate of Embodiment 2.

Figure 6. Example 3 is a cross-sectional view of a dielectric substrate.

Figure 7. Example 3 Side view of a dielectric substrate.

Figure 8. Embodiment 4 Cross-sectional view of a dielectric substrate.

Figure 9. Example 4 Side view of a dielectric substrate.

Figure 10 is a cross-sectional view of a dielectric substrate of Embodiment 5.

Figure 11. Example 5 Side view of a dielectric substrate.

Figure 12 is a cross-sectional view of the dielectric substrate of Example 6.

Figure 13. Example 6 Side view of a dielectric substrate.

Figure 14. Plan view of the dielectric substrate of Embodiment 7.

Figure 15, Figure 14 is a cross-sectional view taken along line A-A.

Figure 16. Plan view of the dielectric substrate of Embodiment 8.

Figure 17, Figure 16 is a cross-sectional view taken along line B-B.

Figure 18 is a plan view of the dielectric substrate of Embodiment 9.

Figure 19, Figure 18 is a cross-sectional view taken along line A-A.

Figure 20 is a plan view of the dielectric substrate of Embodiment 10.

Figure 21, a cross-sectional view taken along line B-B of Figure 20.

【detailed description】

The invention will now be described in detail in conjunction with the drawings and embodiments. Referring to FIG. 1, a plurality of stacked metamaterial functional panels 100 are included. The metamaterial functional panel 100 includes a dielectric substrate 101 and a plurality of artificial microstructures 102 arrayed on the dielectric substrate. The artificial microstructures 102 are located therewith. The dielectric substrate can be viewed as a metamaterial basic structural unit, similar to a crystal lattice in a crystal. 1 is a partial enlarged schematic view of a microstructure of a metamaterial. The actual metamaterial is formed by an array of basic structural units of the order of the number of molecules of the material according to an artificial design. The structure of the artificial microstructure 102 in Fig. 1 is a "work" type structure, and as a specific embodiment, a type-derived type can also be used.

The invention is implemented using the following embodiments:

Example 1

Referring to FIG. 2, the overall structure of the metamaterial includes a multilayer dielectric substrate 101 laminated together and a plurality of artificial microstructures 102 disposed on the dielectric substrate. The structural diagram of the dielectric substrate 101 is shown in FIG. One side is a convex ellipsoid, the other side is a flat plate, and the artificial microstructure 102 is arrayed on the flat side of the dielectric substrate 101.

For metamaterials, we can regard the artificial microstructure, the dielectric substrate occupied by the artificial microstructure, and the space around them as a tiny unit that generates electromagnetic response to electromagnetic waves. The entire metamaterial consists of many tiny units. By designing the structural shape of the artificial microstructures 102 in each of the minute cells and ordering the individual artificial microstructures 102, the metamaterial can be subjected to specific electromagnetic characteristics such as anisotropy, impedance matching, and the like.

Since the equivalent dielectric constant and the equivalent magnetic permeability of each microcell are affected by the artificial microstructure 102, the dielectric substrate 101 occupied by the artificial microstructure 102, and the space around them, the present invention utilizes the modified dielectric substrate 101. The thickness of the dielectric substrate 101 in each microcell is changed, and the equivalent dielectric constant and the equivalent magnetic permeability of the entire microcell can be changed. For example, the dielectric substrate 101 is designed as a convex lens. The convex ellipsoid can make the electromagnetic wave passing through the dielectric substrate have a convergence effect, so that the super material can obtain the electromagnetic wave convergence function on the basis of the original functional characteristics, so as to increase the function expansion of the super material. Example 2

Referring to FIG. 4, the overall structure of the metamaterial includes a multilayer dielectric substrate 101 laminated together and a plurality of artificial microstructures 102 disposed on the dielectric substrate. 5, the dielectric substrate 101 has a concave ellipsoid on one side and a flat plate on the other side, and the artificial microstructures 102 are arrayed on the flat side of the dielectric substrate 101.

According to the above design principles and ideas, the present embodiment can design the dielectric substrate 101 to be a concave ellipsoid like a concave lens, so that the electromagnetic wave passing through the dielectric substrate can have a diverging effect, so that the super-material can obtain electromagnetic wave divergence based on the original functional characteristics. Function to increase the functional expansion of metamaterials. Example 3

As a modification of the above embodiment, the present invention can also be designed as follows. Referring to FIG. 6 and FIG. 7, FIG. 6 is a cross-sectional view of the dielectric substrate 101, and FIG. 7 is a side view of the dielectric substrate 101. One side of the dielectric substrate 101 has a convex shape, and the other side has a flat shape. The array of the artificial microstructures 102 is on the flat side surface of the dielectric substrate 101. The dielectric substrate 101 has a back shape as seen from the side of the boss-shaped structure.

According to the above design principles and ideas, in the present embodiment, the equivalent dielectric constant and the equivalent magnetic permeability of the various retro-shaped structures of the metamaterial are stepped, and on the other hand, the structural shape of the artificial microstructure 102 is designed and According to the arrangement rule, the metamaterial can obtain certain electromagnetic characteristics. On the other hand, through the stepwise distribution of the equivalent dielectric constant and the equivalent magnetic permeability of each of the back-shaped structures, the metamaterial can obtain the corresponding functional characteristics superposition, with more Designed for flexible features and a richer set of features. Example 4

As a modification of the above embodiment, the present invention can also be designed as follows. Referring to FIG. 8 and FIG. 9, FIG. 8 is a cross-sectional view of the dielectric substrate 101, and FIG. 9 is a side view of the dielectric substrate 101. One side of the dielectric substrate 101 has a concave shape, and the other side has a flat shape. The array of the artificial microstructures 102 is on the flat side surface of the dielectric substrate 101. The dielectric substrate 101 has a ring shape when viewed from the side of the concave-shaped structure.

According to the above design principles and ideas, in the present embodiment, for each annular structure of the metamaterial, the equivalent dielectric constant and the equivalent magnetic permeability are stepped, and on the other hand, the structural shape and arrangement of the artificial microstructure 102 are designed. The law of cloth, the metamaterial can obtain certain electromagnetic properties. On the other hand, through the stepped distribution of the equivalent dielectric constant and the equivalent permeability of each ring structure, the metamaterial can obtain the phase. The functional features are superimposed, with more flexible functional design and richer functional applications. Example 5

As a modification of the above embodiment, the present invention can also be designed as follows. Referring to FIG. 10 and FIG. 11, FIG. 10 is a cross-sectional view of the dielectric substrate 101, and FIG. 11 is a side view of the dielectric substrate 101. One side of the dielectric substrate 101 has a square wave structure in which the irregularities are alternately arranged, and the other side has a flat plate shape, and the artificial microstructure 102 is arrayed on the flat side surface of the dielectric substrate 101. The dielectric substrate 101 has a back shape as seen from the side of the square wave structure. .

According to the above design principles and ideas, in the present embodiment, for each of the retro-shaped structures of the metamaterial, the equivalent dielectric constant and the equivalent magnetic permeability are stepped, and on the other hand, the artificial microstructure is designed.

The structure and arrangement of 102, the metamaterial can obtain certain electromagnetic properties. On the other hand, through the alternating distribution of the equivalent dielectric constant and the equivalent permeability of each of the back-shaped structures, the metamaterial can obtain the corresponding function. Feature overlay, with more flexible functional design and richer functional applications. Example 6

As a modification of the above embodiment, the present invention can also be designed as follows. Referring to FIG. 12 and FIG. 13, FIG. 12 is a cross-sectional view of the dielectric substrate 101, and FIG. 13 is a side view of the dielectric substrate 101. One side of the dielectric substrate 101 has a square corrugated structure in which irregularities are alternated, and the other side has a flat plate shape. The array of the artificial microstructures 102 is on the flat side surface of the dielectric substrate 101. The dielectric substrate 101 has a ring shape when viewed from the side of the square wave structure.

According to the above design principles and ideas, in the present embodiment, for each annular structure of the metamaterial, the equivalent dielectric constant and the equivalent magnetic permeability are stepped, and on the other hand, the structural shape of the artificial microstructure 102 is designed. And the arrangement rule, the metamaterial can obtain certain electromagnetic characteristics. On the other hand, through the alternating distribution of the equivalent dielectric constant and the equivalent magnetic permeability of each circular ring structure, the metamaterial can obtain the corresponding functional property superposition. More flexible functional design and richer functional applications. Example 7

The dielectric substrate 101 is designed to include a plurality of different materials of the return substrate unit 103. The plan view of the dielectric substrate is shown in FIG. 14, and FIG. 15 is a cross-sectional view taken along line AA of FIG. The substrate unit 103 is made of a different material, and the dielectric constant of each material is increased from the periphery to the center. Different packing densities are used to indicate different materials in FIG. 15, wherein a large packing density indicates that the material has a large dielectric constant. A small packing density means that the dielectric constant of the material is small. Since the electromagnetic properties of a single basic structural unit are mainly determined by the equivalent dielectric constant and equivalent magnetic permeability of the basic structural unit, the equivalent dielectric constant and equivalent magnetic permeability of a single basic structural unit are determined by the artificial microstructure. 102 and the dielectric substrate 101 in which it is disposed are determined together. Therefore, when the respective return substrate units 103 are made of different materials, the dielectric constants in the different return substrate units 103 on the dielectric substrate 101 are changed. The equivalent dielectric constant of the basic structural unit in the substrate unit 103 will also be changed depending on the associated back substrate unit 103, and finally the metamaterial functional panel 100 has different dielectric constant distributions in different regions. This provides a more flexible design for the functional design of metamaterials.

In this embodiment, the dielectric constant of the return substrate unit 103 is increased from the periphery to the center, and the material can be flexibly selected from the ceramic substrate, the plastic resin substrate or the composite substrate to make different shapes. The substrate unit 103 is arranged in a different material according to the magnitude of the dielectric constant, so that the metamaterial has a non-uniform dielectric constant distribution as a whole.

It should be understood that the size and number of the paper-shaped substrate unit 103 in this embodiment can be arbitrarily designed as needed to meet the electromagnetic characteristics of the metamaterial. Moreover, in the present embodiment, the dielectric constant of each of the returning substrate units 103 is increased from the periphery to the center only as a specific example for convenience of explanation of the present invention. In specific implementation, the dielectric constant of each of the returning substrate units 103 is The arrangement rule also needs to be determined according to the predetermined electromagnetic properties of the metamaterial. The gist of the present invention is also to provide a design path for the electromagnetic properties of the metamaterial by using different materials of the respective back substrate units 103, and through the design approach The design of the artificial microstructure of the super-material function board is combined to achieve the purpose of expanding the functional design path of the super material. Example 8

As another variation of the present invention, the dielectric substrate 101 is designed as an annular substrate unit 104 including a plurality of different materials. A plan view of the dielectric substrate is shown in FIG. 16, and FIG. 17 is a cross-sectional view taken along line BB of FIG. Each annular substrate unit 104 is made of two different materials, and the dielectric constants of the two materials are alternately distributed in size, and different packing densities are represented in FIG. The material in which the packing density is large indicates that the material has a large dielectric constant, and the small packing density indicates that the dielectric constant of the material is small. Since the electromagnetic properties of a single basic structural unit are mainly determined by the equivalent dielectric constant and equivalent magnetic permeability of the basic structural unit, the equivalent dielectric constant and equivalent magnetic permeability of a single basic structural unit are determined by the artificial microstructure. 102 and the dielectric substrate 101 in which it is disposed are determined together. Therefore, when the respective annular substrate units 104 are made of different materials, the dielectric constants in the different substrate units on the dielectric substrate 101 are changed, and the respective annular substrate units 104 are The equivalent dielectric constant of the basic structural unit will also be changed depending on the ring substrate unit 104 to which it belongs, and finally the metamaterial functional board 100 has different dielectric constant distributions in different regions, thereby functioning as a metamaterial. The design provides a more flexible design approach.

In this embodiment, in order to alternately distribute the dielectric constants of the annular substrate unit 104, two different materials may be selected, and the different annular substrate units 104 are alternately arranged with different materials, so that the metamaterials are provided as a whole. Non-uniform dielectric constant distribution.

It should be understood that the size and number of the annular substrate unit 104 in this embodiment can be arbitrarily designed as needed to meet the electromagnetic characteristics of the metamaterial. Moreover, the dielectric constants of the respective annular substrate units 104 in the present embodiment are alternately arranged only for the sake of convenience in explaining the present invention. In the specific implementation, the arrangement law of the dielectric constants of the respective annular substrate units 104 is also required. Depending on the predetermined supermaterial electromagnetic properties, the gist of the present invention is also to provide a design path for the electromagnetic properties of the metamaterial by using different materials of the respective annular substrate units 104, and to create artificial materials on the metamaterial functional board by the design approach. The design of the microstructure arrangement rules is combined to achieve the purpose of expanding the functional design approach of the metamaterial. Example 9

The dielectric substrate 101 is designed to include a plurality of return substrate units 103. The plan view of the dielectric substrate is shown in FIG. 18. FIG. 19 is a cross-sectional view taken along line AA of FIG. 18, wherein each of the return substrate units 103 is made of different materials. The dielectric constant of the material increases from the periphery to the center. Different packing densities are used to indicate different materials in Fig. 3. Among them, the high packing density indicates that the material has a large dielectric constant, and the small packing density indicates the dielectric constant of the material. Small, while the thickness of each of the return substrate units 103 is also increased from the periphery toward the center. Since the electromagnetic properties of metamaterials are determined by the equivalent dielectric constant and equivalent permeability of a plurality of metamaterial basic structural units, the equivalent dielectric of a single basic structural unit The constant and the equivalent magnetic permeability are determined by the artificial microstructure 102 and the dielectric substrate 101 in which it is disposed. Therefore, when each of the returning substrate units 103 is made of a different material, it is equivalent to changing the different times on the dielectric substrate 101. The dielectric constant in the substrate unit 103, the equivalent dielectric constant of the basic structural unit in each of the return substrate units 103 will also be changed depending on the associated back substrate unit 103, and finally the metamaterial function board 100 will be changed. There are different dielectric constant distributions in different regions. Meanwhile, the thickness of each of the paper-shaped substrate units 103 is designed to be increased from the periphery toward the center, and the thickness of the paper-shaped substrate unit 103 is different with respect to the meta-material basic structural unit in each of the paper-shaped substrate units 103, and the basic structure of the metamaterial is The proportion of the dielectric substrate 101 in the cell will be different, and therefore the equivalent dielectric constant exhibited by the metamaterial basic structural unit in each of the returned substrate units 103 will be different.

It can be seen that by changing the thickness of the substrate unit 103 and selecting different materials, the dielectric constant of the metamaterial can be non-uniformly distributed, thereby providing a more flexible design method for the functional design of the metamaterial.

It should be understood that the size, number, and thickness of the paper-shaped substrate unit 103 in this embodiment can be arbitrarily designed as needed to meet the electromagnetic characteristics of the metamaterial. Moreover, in the present embodiment, the dielectric constant of each of the returning substrate units 103 is increased from the periphery to the center only as a specific example for convenience of explanation of the present invention. In specific implementation, the dielectric constant of each of the returning substrate units 103 is The arrangement rule also needs to be determined according to the predetermined electromagnetic properties of the metamaterial. The gist of the present invention is also to provide a design path for the electromagnetic properties of the metamaterial by using different materials and different thicknesses of the respective back substrate units 103, and The design approach is combined with the design of the artificial microstructure arrangement on the metamaterial function board to achieve the purpose of expanding the functional design approach of the metamaterial. Example 10

As another variation of the present invention, the present embodiment designs the dielectric substrate 101 as an annular substrate unit 104 including a plurality of different materials. A plan view of the dielectric substrate is shown in FIG. 20, and FIG. 21 is 20 is a cross-sectional view taken along line BB, wherein each of the annular substrate units 104 is made of two different materials, and the dielectric constants of the two materials are alternately distributed, and the two different materials are represented by two different packing densities in FIG. Among them, the material having a large packing density has a large dielectric constant, and the small packing density indicates that the dielectric constant of the material is small, and the thickness of each of the returning substrate units 103 is also alternately thick and thin. Since the electromagnetic properties of metamaterials are determined by the equivalent dielectric constant and equivalent permeability of a plurality of metamaterial basic structural units, the equivalent dielectric constant and equivalent permeability of a single basic structural unit are The structure 102 and the dielectric substrate 101 in which it is disposed are determined together. Therefore, when the respective annular substrate units 104 are made of different materials, the dielectric constants in the different substrate units on the dielectric substrate 101 are changed, and the respective annular substrate units 104 are replaced. The equivalent dielectric constant of the basic structural unit within it will also be changed depending on the ring substrate unit 104 to which it belongs, eventually causing the metamaterial functional panel 100 to have different dielectric constant distributions in different regions. At the same time, the thickness of each of the paper-shaped substrate units 103 is designed to be alternately thick and thin, and the thickness of the paper-shaped substrate unit 103 is different with respect to the meta-material basic structural unit in each of the paper-shaped substrate units 103, and the meta-material basic structural unit is The occupation ratio of the dielectric substrate 101 will be different, and therefore the equivalent dielectric constant exhibited by the metamaterial basic structural unit in each of the return substrate units 103 will also be different.

In this embodiment, the dielectric constants of the annular substrate unit 104 are alternately distributed. On the one hand, two different materials can be selected, and the annular substrate units 104 of two different materials are alternately arranged, thereby making the whole The metamaterial has a non-uniform dielectric constant distribution, and at the same time, in order to better alternate the dielectric constant of the annular substrate unit 104, the thickness of each of the return substrate units 103 is designed to be alternately thick and thin, so that the thickness is alternated. The effect of the distribution of the material and the alternating distribution of the material on the dielectric constant will be more flexible.

It should be understood that the size, number, and thickness of the annular substrate unit 104 in this embodiment can be arbitrarily designed as needed to meet the electromagnetic characteristics of the metamaterial. Moreover, the dielectric constants of the respective annular substrate units 104 in the present embodiment are alternately arranged only for the sake of convenience in explaining the present invention. In the specific implementation, the arrangement law of the dielectric constants of the respective annular substrate units 104 is also required. According to the predetermined electromagnetic properties of the metamaterial, the gist of the present invention is also to provide a design path for the electromagnetic properties of the metamaterial by using different materials and different thicknesses of the respective annular substrate units 104, and through the design approach and the metamaterial. The design of the artificial microstructure arrangement rules on the function board is combined to achieve the purpose of expanding the functional design path of the super material. It can be seen from the above description that the use of metamaterials according to the present invention for non-uniform thicknesses and/or dielectric substrates composed of different materials can make the metamaterials have more abundant functional applications, such as achieving convergence, divergence and deflection of electromagnetic waves. In addition, the dielectric substrate and the artificial microstructure of the metamaterial have various electromagnetic characteristics at the same time, which provides a solution for forming a plurality of unique functions of the metamaterial.

Finally, it should be noted that the paper-shaped substrate unit or the annular substrate unit in the present invention is only one of the specific embodiments, and the shape of the area of the substrate unit can be arbitrarily designed as needed.

In the above-described embodiments, the present invention has been exemplarily described, and various modifications of the present invention may be made without departing from the spirit and scope of the invention.

Claims

Claim

What is claimed is: 1. A metamaterial comprising a plurality of arrays of metamaterial functional panels, the metamaterial functional panel comprising a dielectric substrate and a plurality of artificial microstructures arrayed on the dielectric substrate, wherein: the dielectric substrate has a non-uniformity The dielectric constant distribution.

2. The metamaterial according to claim 1, wherein: the thickness of the dielectric substrate is non-uniformly distributed.

3. The metamaterial according to claim 1, wherein: the dielectric substrate is composed of a plurality of substrate units of different materials.

4. The metamaterial according to claim 1, wherein: the dielectric substrate is composed of a plurality of substrate units of different materials, and the thickness of the plurality of substrate units is non-uniformly distributed.

The metamaterial according to claim 2, wherein the dielectric substrate is a convex ellipsoid or a concave ellipsoid.

The metamaterial according to claim 2, wherein: the side surface of the dielectric substrate is a plurality of back structures or a plurality of ring structures, and the plurality of back structures or the plurality of ring structures have different thicknesses.

7. The metamaterial according to claim 6, wherein: the thickness of the plurality of back structures or the plurality of ring structures is stepped.

The metamaterial according to claim 3, wherein the dielectric substrate comprises a substrate unit having a plurality of return structures or annular structures.

9. The metamaterial according to claim 8, wherein: the dielectric constant of the substrate unit of the plurality of return structures or annular structures is increased or decreased by a gradient.

The metamaterial according to claim 8, wherein the dielectric constants of the plurality of the return-shaped structures or the ring-shaped substrate units are alternately distributed.

The metamaterial according to claim 4, wherein the dielectric substrate comprises a substrate unit having a plurality of return structures or annular structures.

12. The metamaterial according to claim 11, wherein: the dielectric constant of the substrate unit of the plurality of return structures or annular structures is increased or decreased by a gradient.

The metamaterial according to claim 11, wherein the dielectric constants of the plurality of the return-shaped structures or the ring-shaped substrate units are alternately distributed.

The metamaterial according to any one of claims 1 to 13, wherein the material of the substrate unit is a ceramic substrate, a plastic resin substrate or a composite substrate.

The metamaterial according to any one of claims 1 to 13, wherein the artificial microstructure is a metal artificial microstructure.

The metamaterial according to claim 15, wherein the metal artificial microstructure is of an I-shaped or I-shaped type.