CN115313058A - A transparent and reconfigurable multifunctional metasurface - Google Patents

Abstract

The invention discloses a transparent and reconfigurable multifunctional metasurface. The metasurface includes N×N basic units arranged periodically to form a unit array, where N is a natural number; each basic unit is controlled by the same signal, and the entire unit array is The control signal is controlled by an external circuit; the present invention performs multi-functional regulation on the amplitude of the transmitted wave and the reflected wave by introducing a PIN tube as an adjustable device, and the control is precise and can be switched quickly; the present invention can adjust the incident angle at 0-80° The internal TE and TM polarized incident waves achieve transmission enhancement and electromagnetic shielding, improving the electromagnetic properties of the original glass. By introducing the design of metal folding lines, the present invention maintains high optical transparency while maintaining the reconfigurable electromagnetic properties. To sum up, the present invention has stronger electromagnetic wave regulation capability, better adaptability to incident waves and higher optical transparency than traditional designs.

Description

A transparent reconfigurable multifunctional metasurface

technical field

The invention relates to the technical field of reconfigurable multifunctional metasurfaces, in particular to a transparent reconfigurable multifunctional metasurface.

Background technique

Reconfigurable metasurfaces, due to their great potential in improving channels and improving communication quality, have received extensive attention in the field of improving wireless electromagnetic communication channels. The practical application capability of reconfigurable metasurfaces has always attracted much attention. Therefore, designing a reconfigurable metasurface with strong control ability and wide application scenarios is a continuous pursuit of engineering and academia. Traditional reconfigurable metasurfaces can improve the quality of communication channels by deploying on indoor and outdoor walls, inside vehicles or near communication equipment. However, traditional reconfigurable metasurfaces are all processed by printed circuit board (PCB) technology, and their structures are not transparent, which makes it impossible to deploy metasurfaces in some specific scenarios, such as: glass curtain walls, automotive glass, High-speed iron glass, etc., thus limiting the application of metasurfaces.

As a natural material, the traditional glass medium passively influences the wireless communication channel. Its electromagnetic properties are determined by relative permittivity, relative permeability and thickness. Once processed, its electromagnetic properties cannot be manipulated. Although transparent conductive materials, such as: ITO, metal grids, and silver nanowires have been introduced into the previous designs of transparent metasurfaces, most of these transparent metasurfaces are passive metasurfaces, and their functions will be fixed once the structure design is completed. , unable to achieve multifunctional reconfiguration. A small number of transparent metasurfaces can achieve functional switching by loading active devices and mechanical regulation, but their regulation capabilities are limited:

The transparent metasurface proposed in "Transparent dynamic metasurface for a visually unaffected reconfigurable intelligent surface: controlling transmission/reflection and making a window into an RF lens" achieves functional switching by mechanically adjusting the distance from the dielectric plate to the metasurface. This design features switching speed Slow, high profile and only available at normal incidence.

The transparent metasurface proposed in "Optical-transparent metasurface for flexible manipulation and analog information modulation" switches the function by changing the voltage of the varactor diode, but it can only adjust the amplitude of the reflected wave, and it is only suitable for normal incidence.

Therefore, a transparent reconfigurable multifunctional metasurface with stronger control ability and wider application scenarios needs to be studied urgently. The transparent reconfigurable multifunctional metasurface is expected to achieve the following functions: 1. Suitable for dual-polarized incident waves2 .Suitable for wide incident angle 3. Can control electromagnetic waves in the whole space 4. Multifunctional and fast function switching speed 5. Low profile 6. High light transmittance

Contents of the invention

Technical problem: In view of this, the purpose of the present invention is to provide a transparent reconfigurable multifunctional metasurface to solve the technical problems mentioned in the background art. Therefore, within the preset frequency band, the amplitude of electromagnetic waves in the whole space can be flexibly adjusted.

Technical solution: In order to achieve the above object, the present invention adopts a transparent reconfigurable multifunctional metasurface, and the transparent reconfigurable multifunctional metasurface includes N×N basic units periodically arranged to form a unit array, where N is Natural number; each basic unit is controlled by the same signal, and the control signal of the entire unit array is controlled by an external circuit;

Wherein, the layered structure of each basic unit includes from top to bottom:

The first layer is the upper metal pattern layer;

The second layer is the upper PET layer;

The third layer is the upper adhesive layer;

The fourth layer is the glass medium layer;

The fifth layer is the lower adhesive layer;

The sixth layer is the lower PET layer;

The seventh layer is the lower metal pattern layer,

Among them, the upper metal pattern layer and the upper PET layer together constitute the upper reconfigurable transparent film; the lower PET layer and the lower metal pattern layer together constitute the lower reconfigurable transparent film; the upper reconfigurable transparent film and the lower reconfigurable transparent film are combined with The glass medium layers are connected by an adhesive layer.

The upper metal pattern layer includes two mutually perpendicular upper metal folding lines, and the four outer ports of the two mutually perpendicular upper metal folding lines are respectively located in the middle of the four sides of the upper metal pattern layer. Load PIN tube A and PIN tube B in series on the line.

The lower metal pattern layer includes two mutually perpendicular lower metal folding lines, the four outer ports of the two mutually perpendicular lower metal folding lines are respectively located in the middle of the four sides of the lower metal pattern, and the lower metal folding lines along the y direction Load PIN tube C and PIN tube D in series.

The PIN tube A, PIN tube B, PIN tube C and PIN tube D are in a conduction state when the bias current is 1mA, are in a non-conduction state when the bias voltage is 0mA, and are in a non-conduction state when the bias voltage is 0mA and 1mA. It is in an intermediate state; the internal equivalent circuit of the PIN tube is different when it is conducting and not conducting and in the intermediate state, so that it produces different electromagnetic responses to the electromagnetic waves incident on the reconfigurable multifunctional metasurface, and realizes multiple Functional space electromagnetic wave regulation.

When the bias current of the PIN tube A, PIN tube B, PIN tube C and PIN tube D is 0mA, it is in the transmission enhancement state; when the bias current is 10mA, it is in the electromagnetic shielding state; when the bias current is 0mA and When it is between 1mA, it is in the state of two-channel AM communication.

In the dual-channel AM communication state, the metasurface controls the amplitude of the reflected wave and the transmitted wave generated by the incident wave, and this control method is called full-space control.

The metasurface is suitable for application scenarios with wide incident angle and dual polarization; wherein, the applicable range of the incident angle of the incident wave is within 0-80°; wherein, both TE polarized and TM polarized incident waves are applicable.

The transparent reconfigurable multifunctional metasurface maintains optical transparency in addition to having electromagnetic reconfigurable properties.

Wherein, the first upper metal pattern layer and the seventh lower metal pattern layer jointly regulate the incident electromagnetic wave.

The upper and lower metal pattern layers are loaded with 4 PIN tubes in total, and by controlling the DC current on both sides of the PIN tubes, the incident electromagnetic wave can be regulated in real time and quickly.

The basic unit does not introduce an additional DC feeder layer to control the DC voltage on both sides of the PIN tube, and the metal folded line that does not load the PIN tube in series in the metal pattern layer not only responds to incident electromagnetic waves, but also serves as a DC feeder to control the PIN tube voltage. This simple structural design is beneficial to the design and processing of transparent metasurfaces.

Beneficial effects: compared with the prior art, the technical solution of the present invention has the following advantages:

1. The present invention can flexibly control the amplitude of electromagnetic waves in the whole space within a preset frequency band only by pasting a reconfigurable transparent film on both sides of the glass surface.

2. The transparent reconfigurable multifunctional metasurface of the present invention is applicable to dual-polarized incident waves: vertically polarized waves (TE) and horizontally polarized waves (TM); and, the transparent reconfigurable multifunctional metasurface The functional metasurface has a good ability to control the amplitude of the incident wave with an incident angle of 0°-80°. This reconfigurable multifunctional metasurface with dual polarization and wide incident angle greatly increases its adaptability to various incident wave scenarios and has high robustness.

3. Compared with the traditional flat glass, a natural material that has a fixed response to incident electromagnetic waves, the transparent reconfigurable multifunctional metasurface can realize full-space and multifunctional electromagnetic wave regulation by changing the feeding voltage:

When the bias current of the PIN tube is 1mA, the transparent reconfigurable multifunctional metasurface has high electromagnetic transmittance to the TE and TM polarized incident waves with an incident angle of 0-80°, compared with the traditional Flat glass has a transmission enhancement effect, which is beneficial to the transmission rate of wireless electromagnetic communication signals from indoor to outdoor.

When the bias current of the PIN tube is 0mA, the transparent reconfigurable multifunctional metasurface has high electromagnetic reflectivity for TE and TM polarized incident waves with an incident angle of 0-80°, compared with the traditional Flat glass has an electromagnetic shielding effect, which can shield the interference of outdoor electromagnetic waves on indoor electromagnetic communication, and is conducive to the transmission rate of wireless electromagnetic communication signals from indoor to indoor.

When the bias current of the PIN tube is an intermediate value from 0 mA to 1 mA, the transparent reconfigurable multifunctional metasurface can regulate the transmission and reflection amplitudes of incident electromagnetic waves. By changing the magnitude of the bias current, continuous amplitude modulation control is performed on the electromagnetic wave in the whole space, so the two-channel amplitude modulation communication can be realized through the control signal.

4. The transparent reconfigurable multifunctional metasurface has good electromagnetic control ability and high visible light transmittance, and maintains the light transmittance of the original transparent flat glass to the greatest extent.

Description of drawings

Fig. 1 is the structural representation of the transparent reconfigurable multifunctional metasurface provided in embodiment 1;

Fig. 2 is the front view of the transparent reconfigurable multifunctional metasurface provided in embodiment 1;

Fig. 3 is the upper metal pattern layer of the transparent reconfigurable multifunctional metasurface provided in embodiment 1, wherein the part in the dotted line frame is the metal pattern in a basic unit;

Fig. 4 is the metal pattern in a basic unit of the transparent reconfigurable multifunctional metasurface provided in embodiment 1 and its local enlarged view;

Fig. 5 is a schematic diagram of a transmission enhanced state under a DC bias of 1 mA;

(a) is ordinary flat glass that is not pasted with a reconfigurable transparent film and in Example 1, a reconfigurable transparent film (transparent reconfigurable multifunctional metasurface) is pasted on both sides of the common flat glass in a state of enhanced transmission, The relationship curves of the electromagnetic transmission coefficient and frequency of the TE polarized wave at the incident angles of 0°, 40°, and 80°, and the transmission is enhanced under the DC bias of 1mA;

(b) is the relationship between the electromagnetic transmission coefficient and the frequency of the TM polarized wave at the incident angles of 0°, 40°, and 80°.

Fig. 6 is not pasted the ordinary flat glass of reconfigurable transparent film and in embodiment 1, in embodiment 1, pasted reconfigurable transparent film (transparent reconfigurable multifunctional metasurface) on both sides of ordinary flat glass in the state of enhanced transmission, 5.2 The relationship between the transmission coefficient and the incident angle at the GHz frequency point, and the relationship between the anti-reflection performance of the transparent reconfigurable multifunctional metasurface and the incident angle.

(a) is the relationship between the transmission coefficient and anti-reflection performance of the TE polarized wave and the incident angle,

(b) is the relationship between the transmission coefficient and anti-reflection performance of TM polarized waves and the incident angle.

Fig. 7 is a schematic diagram of an electromagnetic shielding state under a DC bias of 0 mA;

(a) is the transparent reconfigurable multifunctional metasurface provided in embodiment 1 in the electromagnetic shielding state, the electromagnetic transmission coefficient of TE polarized wave at the incident angle is 0 °, 40 °, and 80 °,

(b) is the electromagnetic transmission coefficient of the TM polarized wave at the incident angles of 0°, 40°, and 80°, and it is the electromagnetic shielding state under the DC bias of 0 mA.

Fig. 8 is not pasted the ordinary flat glass of reconfigurable transparent film and in embodiment 1, has pasted reconfigurable transparent film (transparent reconfigurable multifunctional metasurface) on both sides of ordinary flat glass in electromagnetic shielding state, 5.2 The relationship between the transmission coefficient and the incident angle at the GHz frequency point, and the relationship between the shielding performance of the transparent reconfigurable multifunctional metasurface and the incident angle.

(a) is the relationship between the transmission coefficient and shielding performance of the TE polarized wave and the incident angle,

(b) is the relationship between the transmission coefficient and shielding performance of TM polarized waves and the incident angle.

Fig. 9 is the transparent reconfigurable multifunctional metasurface in embodiment 1 under the state of two-channel AM communication, when the DC bias is at 0-1mA, it is the state of dual-channel AM communication, and the normal incidence transmittance under different bias currents Reflection coefficient.

(a) is the transmission coefficient under different bias currents.

(b) is the reflection coefficient under different bias currents.

Attached are:

Upper metal pattern layer 1, PIN tube A1.1, PIN tube B1.2, upper metal folding line A1.3;

Upper PET layer 2;

Upper Adhesive Layer 3

Glass medium layer 4;

Lower adhesive layer 5;

Lower PET layer 6;

Lower metal pattern layer 7, PIN tube C7.1, PIN tube D7.2, lower metal folding line B7.3.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Example 1

Referring to Fig. 1-Fig. 4, the present embodiment provides a transparent reconfigurable multifunctional metasurface, and the transparent reconfigurable multifunctional metasurface includes: N×N basic units arranged periodically to form a unit array, wherein , each basic unit is controlled by the same signal, and the control signal of the entire unit array is controlled by an external circuit.

Specifically, in this embodiment, the basic unit includes from top to bottom:

The first layer is the upper metal pattern layer 1, in which the upper metal pattern layer contains PIN tube A1.1, PIN tube B1.2 and two mutually perpendicular metal folding lines A1.3; the two PIN tubes are loaded in series through the pad On the metal fold line along the x-direction.

The second layer is the upper PET layer 2;

The third layer is the upper adhesive layer 3;

The fourth layer is the glass medium layer 4;

The fifth layer is the lower adhesive layer 5;

The sixth layer is the lower PET layer 6;

The first layer is the lower metal pattern layer 7, wherein the lower metal pattern layer contains PIN tube C7.1, PIN tube D7.2 and two mutually perpendicular metal folding lines B7.3; where the two PIN tubes are loaded in series along the y direction on the metal fold line.

Wherein, the upper metal pattern layer 1 of the first layer and the lower metal pattern layer 7 of the seventh layer jointly play a role in regulating incident electromagnetic waves;

Among them, the upper layer metal pattern layer 1 and the upper layer PET layer 2 jointly constitute the upper layer reconfigurable transparent film, and the lower layer PET layer 6 and the lower layer metal pattern layer 7 jointly constitute the lower layer reconfigurable transparent film; wherein, the upper layer reconfigurable transparent film and the lower layer The reconfigurable transparent film is connected with the glass medium layer through the upper adhesive layer 3 and the lower adhesive layer 5 .

Specifically, the reconfigurable transparent film provided in this example can be easily prepared using flexible circuit board (FPC) technology, more specifically:

A 0.188mm-thick single-sided copper-clad PET film (ε _r = 3.2, tanδ = 0.006) is used as the substrate of the upper metal pattern layer 1, and two mutually perpendicular lines are etched on the single-sided copper-clad copper-clad PET film by FPC technology The metal folding line, the metal folding line loaded with the PIN tube leaves the pad; the design of the lower metal pattern layer 7 is similar to that of the upper metal pattern layer 1.

The thickness of the copper layer on the surface of the metal pattern layer is 0.035mm, which is composed of two mutually perpendicular metal folding lines; this symmetrical structure makes the designed transparent reconfigurable multifunctional metasurface have polarization insensitivity. The folding bending angle α of the metal folding line is 60°;

The glass dielectric layer is ordinary flat glass with a thickness of 2mm, the model is Borofloat 33, the relative dielectric constant is 4.6, and the electric loss angle is 0.0085.

The model of the PIN tube described in this example is SMP1321-040LF. The PIN tube of this type has a small package, low loss, and low cost, and can be better applied to the design of a transparent reconfigurable multifunctional metasurface; PIN tubes are loaded on the metasurface unit by soldering at the pads on the folded wires.

The line width w of the metal folding line in this embodiment is 0.15mm, and this kind of thin metal pattern structure greatly reduces the metal pattern’s blocking of visible light; the metal folding line of the basic unit in this embodiment occupies The area occupies only 7.8% of the entire unit area. The area of the PIN tube packaged in SOD-882 is only 0.6mm ² , and the blocking of visible light by the PIN tube is almost negligible; therefore, the theoretical maximum light transmittance of a transparent reconfigurable multifunctional metasurface in this embodiment is 92%.

Specifically, as shown in Figures 1-4, in this embodiment the specific dimensions of the metal pattern layer, the PET layer, and the glass medium layer of the basic unit are:

The size of the basic unit P=8.5mm, the bending angle of the metal folding line α=60°, the line width of the metal folding line W=0.15mm, the layer thickness h _glass of the glass medium layer =2mm, the upper PET layer and the lower PET layer Layer thickness h _pet = 0.188mm, distance l between two PIN tubes of the same metal pattern = 3.7mm. The length of the pad is l _pad = 0.6mm, the width w _pad = 0.4mm, and the spacing between the pads l _pad = 0.3mm.

This embodiment provides a transparent reconfigurable multifunctional metasurface, by changing the bias current passing through the PIN tube, the amplitude of the electromagnetic wave in the whole space can be multifunctionally regulated:

1) When the bias current of the PIN tube is 1mA, this embodiment provides a transparent reconfigurable multifunctional metasurface in a transmission-enhanced state, and polarized incident waves of TE and TM within an incident angle of 0-80° Has high transmittance.

2) When the bias current of the PIN tube is 0mA, this embodiment provides a transparent reconfigurable multifunctional metasurface in an electromagnetic shielding state, and polarized incident waves of TE and TM within the incident angle of 0-80° Has high reflectivity.

3) When the bias current of the PIN tube is between 0mA-1mA, this embodiment provides a transparent reconfigurable multifunctional metasurface in the state of dual-channel AM communication; the dual-channel AM communication refers to, through Loading the space carrier signal on one side of the transparent reconfigurable multifunctional metasurface can perform amplitude modulation communication to two receivers located in the incident half-space and reflected half-space.

Figure 5 shows that when the bias current of the PIN tube is 1mA, the embodiment provides a transparent reconfigurable multifunctional metasurface and a 2mm thick ordinary flat glass at an incident angle of 0°, 40°, and 80° The dependence of transmission coefficient on frequency. Figure 5(a) shows the case where the incident wave is a TE polarized wave, and Figure 5(b) shows the case where the incident wave is a TM polarized wave.

In order to measure the anti-reflection performance of a kind of transparent reconfigurable multifunctional metasurface provided by this embodiment in the state of transmission enhancement (the bias current of the PIN tube is 1mA), the anti-reflection performance is defined as:

Anti-reflection performance (dB) = transmission coefficient (dB) of a 2mm thick flat glass with a reconfigurable transparent film on the surface - transmission coefficient (dB) of a 2mm thick flat glass without a reconfigurable transparent film on the surface;

Figure 6 shows the relationship between the anti-reflection performance and the incident angle of a transparent reconfigurable multifunctional metasurface provided by this implementation at 5.25GHz under the state of enhanced transmission, and the 2mm thick reconfigurable transparent film pasted on the surface The relationship between the transmission coefficient and the incident angle at 5.25GHz of flat glass and a 2mm thick flat glass without a reconfigurable transparent film on the surface. Figure 6(a) shows the case where the incident wave is a TE polarized wave, and Figure 6(b) shows the case where the incident wave is a TM polarized wave.

Figure 7 shows that when the bias current of the PIN tube is 0mA, the embodiment provides a transparent reconfigurable multifunctional metasurface and a 2mm thick ordinary flat glass at an incident angle of 0°, 40°, and 80° The dependence of transmission coefficient on frequency. Figure 7(a) shows the case where the incident wave is a TE polarized wave, and Figure 7(b) shows the case where the incident wave is a TM polarized wave.

In order to measure the shielding performance of a kind of transparent reconfigurable multifunctional metasurface provided by this embodiment in the electromagnetic shielding state (the bias current of the PIN tube is 0mA), the shielding performance is defined as:

Shielding performance (dB) = transmission coefficient (dB) of a 2mm thick flat glass without a reconfigurable transparent film on the surface - transmission coefficient (dB) of a 2mm thick flat glass with a reconfigurable transparent film on the surface;

Figure 8 shows the relationship between the shielding performance of a transparent reconfigurable multifunctional metasurface provided by this implementation and the incident angle at 5.25GHz under the electromagnetic shielding state, and the 2mm thick metasurface with a reconfigurable transparent film pasted on the surface The relationship between transmission coefficient and incident angle at 5.25GHz for flat glass and 2mm thick flat glass without reconfigurable transparent film on the surface. Figure 8(a) shows the case where the incident wave is a TE polarized wave, and Figure 8(b) shows the case where the incident wave is a TM polarized wave.

Figure 9 shows the transmission and reflection coefficients of a transparent reconfigurable multifunctional metasurface provided by this implementation at 0mA, 1uA, 5uA, 10uA, 20uA, 50uA, 100uA, and 1mA DC bias under normal incidence. frequency relationship. Figure 9(a) is the transmission coefficient, and Figure 9(b) is the reflection coefficient. A variety of transflective amplitude curves in different states can realize good two-channel AM communication.

It should be further noted that, the operating frequency band of the unit provided in this embodiment is 4-6 GHz, and the center frequency point is 5.25 GHz. The overall working frequency band is in the sub-6G band. If the size of the unit is adjusted, its working frequency band can be flexibly adjusted and the performance of good multifunctional electromagnetic control can be satisfied.

The parts of the present invention that are not described in detail are known technologies of those skilled in the art.

The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning or limited experiments on the basis of the prior art shall be within the scope of protection defined by the claims.

Claims (10)

1. A transparent reconfigurable multifunctional metasurface is characterized in that the transparent reconfigurable multifunctional metasurface includes N × N basic units periodically arranged to form a cell array, and N is a natural number; each basic unit Controlled by the same signal, the control signal of the entire cell array is controlled by an external circuit; Wherein, the layered structure of each basic unit includes from top to bottom: The first layer is an upper metal pattern layer (1); The second layer is the upper PET layer (2); The third layer is the upper adhesive layer (3); The fourth layer is a glass medium layer (4); The fifth layer is the lower adhesive layer (5); The sixth layer is the lower PET layer (6); The seventh layer is the lower metal pattern layer (7), Among them, the upper layer metal pattern layer (1) and the upper layer PET layer (2) together constitute the upper layer reconfigurable transparent film; the lower layer PET layer (6) and the lower layer metal pattern layer (7) together constitute the lower layer reconfigurable transparent film; the upper layer can The reconfigurable transparent film and the lower reconfigurable transparent film are connected with the glass medium layer (4) through an adhesive layer. 2. A kind of transparent reconfigurable multifunctional metasurface according to claim 1, is characterized in that, described upper metal pattern layer (1) comprises two mutually perpendicular upper metal folding lines (1.3), two The four outer ports of the upper metal folding line (1.3) perpendicular to each other are respectively located in the middle of the four sides of the upper metal pattern layer (1), and the PIN tube A (1.1) is loaded in series on the upper metal folding line (1.3) along the x direction and pin B (1.2). 3. A kind of transparent reconfigurable multifunctional metasurface according to claim 1, characterized in that, the lower metal pattern (7) layer comprises two mutually perpendicular lower metal folding lines (7.3), two The four outer ports of the mutually perpendicular lower metal folding lines (7.3) are respectively located in the middle of the four sides of the lower metal pattern (7), and the PIN tube C (7.1) is loaded in series on the lower metal folding line (7.3) along the y direction and PIN tube D (7.2). 4. A kind of transparent reconfigurable multifunctional metasurface according to claim 2 or 3, is characterized in that, described PIN tube A (1.1), PIN tube B (1.2), PIN tube C (7.1) and PIN tube D (7.2) is in a conduction state when the bias current is 1mA, is in a non-conduction state when the bias voltage is 0mA, and is in an intermediate state when the bias voltage is between 0mA and 1mA; the PIN tube The internal equivalent circuits are different in conduction, non-conduction and intermediate states, so that different electromagnetic responses are generated to the electromagnetic waves incident on the reconfigurable multifunctional metasurface, and multifunctional spatial electromagnetic wave regulation is realized. 5. a kind of transparent reconfigurable multifunctional metasurface according to claim 2 or 3, is characterized in that, described PIN tube A (1.1), PIN tube B (1.2), PIN tube C (7.1) and When the bias current of PIN tube D (7.2) is 0mA, it is in the state of enhanced transmission; when the bias current is 10mA, it is in the state of electromagnetic shielding; when the bias current is between 0mA and 1mA, it is in the state of dual-channel AM communication . 6. A kind of transparent reconfigurable multifunctional metasurface according to claim 5, characterized in that, the state of the two-channel amplitude modulation communication is that the metasurface performs amplitude control on the reflected wave and transmitted wave generated by the incident wave, This control method is called global control. 7. A kind of transparent reconfigurable multifunctional metasurface according to claim 6, is characterized in that, described metasurface is applicable to the application scene of wide incident angle, dual polarization; Wherein, the incident angle of incident wave The applicable range is within 0-80°; among them, both TE polarization and TM polarization incident waves are applicable. 8. A transparent reconfigurable multifunctional metasurface according to claim 7, characterized in that, the transparent reconfigurable multifunctional metasurface maintains optical transparency in addition to having electromagnetic reconfigurable characteristics . 9. A kind of transparent reconfigurable multifunctional metasurface according to claim 8, is characterized in that, the upper metal pattern layer (1) of the first layer and the lower metal pattern layer (7) of the seventh layer ) jointly regulate the incident electromagnetic wave. 10. A transparent reconfigurable multifunctional metasurface according to claim 2 or 3, characterized in that, the folding bending angle α of the upper metal folding line or the lower metal folding line is 60°.

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