Mechanical broadband continuous phase-adjustable intelligent metasurface system structure

Abstract

A mechanical broadband continuous phase adjustable intelligent metasurface system structure disclosed by the present invention comprises an intelligent metasurface and a mechanical control unit, the intelligent metasurface comprises a plurality of intelligent metasurface units, the plurality of intelligent metasurface units are arranged in an array mode, and each intelligent metasurface unit comprises a multi-layer structure, a metal copper plate, a square dielectric substrate, a cylindrical dielectric substrate and a metal copper pattern are sequentially arranged from bottom to top. Circular small holes are formed in the centers of the metal copper plate and the square dielectric substrate; the mechanical control unit comprises a plurality of steering engines, the steering engines are connected with the intelligent metasurface unit through metal columns, one ends of the metal columns are connected with output shafts of the steering engines, the other ends of the metal columns are inserted into the small round holes, the metasurface unit is driven to rotate through continuous rotating motion of the steering engines, and therefore the reflection phase is continuously adjustable within the range of 0-180 degrees. The adaptability and the efficiency of the intelligent metasurface in different communication environments are improved, and the reliability and the stability of mechanical regulation and control are greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of wireless communication technology, and in particular to a mechanical broadband continuous phase-adjustable intelligent metasurface system structure. Background Art

[0002] In the current wireless communication field, traditional signal propagation methods face many limitations, especially in terms of signal coverage, transmission efficiency and flexibility. With the development of 5G and future communication technologies, the demand for wireless signal management is increasing, especially to achieve efficient and directional signal control in complex environments. In this context, intelligent reflecting surfaces (IRS) as a new technology has been proposed to enhance signal coverage and transmission efficiency by dynamically adjusting its surface properties to control the reflection direction and state of electromagnetic waves.

[0003] However, the control of most existing smart metasurfaces is mainly concentrated on the electronic switching type. The electronic switching type smart reflective surface unit realizes discrete phase adjustment through high-frequency diodes, but the number of discrete phases is limited and continuous regulation cannot be achieved, which limits the beamforming gain generated by the smart reflective surface. Summary of the invention

[0004] The purpose of the present invention is to provide a mechanical broadband continuous phase-adjustable intelligent metasurface system structure, which not only improves the adaptability and efficiency of the intelligent metasurface in different communication environments, but also greatly increases the reliability and stability of mechanical regulation.

[0005] The technical solution of the present invention is:

[0006] A mechanical broadband continuous phase-adjustable intelligent metasurface system structure comprises: an intelligent metasurface and a mechanical control unit, wherein the intelligent metasurface comprises a plurality of intelligent metasurface units, the plurality of intelligent metasurface units are arranged in an array, each of the intelligent metasurface units comprises a multilayer structure, which comprises, from bottom to top, a metal copper plate, a square dielectric substrate, a cylindrical dielectric substrate and a metal copper pattern, wherein the metal copper pattern comprises: two semi-annular metal copper patches, the two semi-annular metal coppers are symmetrically arranged in a manner that the inner ring surfaces are opposite, and a gap is provided between the two ends of the two semi-annular metal coppers; circular holes are provided at the centers of the metal copper plate and the square dielectric substrate, and the circular holes of the metal copper plate are aligned and connected with the circular holes of the square dielectric substrate; the mechanical control unit comprises a plurality of steering gears, each of the steering gears corresponds to an intelligent metasurface unit, and the corresponding steering gears are connected to the intelligent metasurface units through a metal column, one end of the metal column is connected to the output shaft of the steering gear, and the other end is inserted into the circular holes of the metal copper plate and the circular holes of the square dielectric substrate.

[0007] Further, the metal copper plate is a square plate and has the same plate surface size as the square dielectric substrate.

[0008] Further, the rotation angle range of the servo motor controlling the intelligent metasurface unit is: 0° to 90°.

[0009] Further, the simulation design method of each intelligent metasurface unit includes the following steps:

[0010] Step 1: The periodic side length P of the intelligent metasurface is a value smaller than the wavelength λ, that is, 0 < P < λ; where λ = c / f, c represents the speed of light in vacuum as 3×10 8 m / s, f represents the working frequency of the designed intelligent metasurface, and the specific value of P is found through software simulation optimization and adjustment to obtain the required specific value;

[0011] Step 2: The thickness h of the cylindrical dielectric substrate is selected as a part of the wavelength at the working frequency, that is, 0 < h < λ / 4. Here, the wavelength λ is related to the relative permittivity ε r of the dielectric substrate, that is The specific value of h is found through software simulation optimization and adjustment to obtain the required specific value;

[0012] Step 3: The thickness h1 of the square dielectric substrate is usually selected as a part of the wavelength at the working frequency, which is λ / 4, that is, h1 < λ / 4. Here, the wavelength λ is related to the relative permittivity ε r of the dielectric substrate, that is Since the value of h1 is greater than 0, so 0 < h1 < λ / 4. The specific value of h1 is found through software simulation optimization and adjustment to obtain the required specific value;

[0013] Step 4: The radius R of the outer ring is less than a part of the wavelength at the working frequency, which is λ / 4, that is, R < λ / 4. Where λ = c / f, c represents the speed of light in air or vacuum as 3×10 8 m / s, f represents the working frequency of the designed intelligent metasurface. Here, the value of R is greater than 0, so 0 < R < λ / 4. The radius r of the inner ring is smaller than the outer ring radius R, that is, 0 < r < R < λ / 4. At this time, the phase covered can be 0° to 180° only when the difference between the two exists; the ring width w is directly equal to R - r, that is, 0 < R - r < (λ / 4) - r. The specific values of R, r, and w are found through software simulation optimization and adjustment to obtain the required specific values;

[0014] Step 5: The opening gap g is also less than the wavelength at the working frequency, which is λ / 10, that is, 0 < g < λ / 10. The specific value of g is found through software simulation optimization and adjustment to obtain the required specific value;

[0015] Step 6: Set the size of the circular hole r1 according to the radius of the metal column actually used, and then directly enter the specific value in the software.

[0016] Furthermore, the metal copper pattern and the metal copper plate are both yellow.

[0017] Furthermore, the intelligent metasurface unit is rotated to the left by 10° each time from 0° to 90° to obtain the corresponding reflection amplitude and reflection phase, namely 0°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, and 90°.

[0018] Furthermore, the relationship between the rotation angle and the reflection phase when the frequencies are 6.25 GHz, 6.5 GHz, 6.8 GHz, and 7 GHz is:

[0019] When the frequency is 6.25 GHz, the smart metasurface gradually rotates from 0° to 90°, each time rotating 10° counterclockwise. During this process, the rotation angle and the reflection phase are in one-to-one correspondence. At the same time, all the mentioned rotation angles and corresponding reflection phase values ​​are converted into radians (rad), radians = angle × π / 180, or radians = phase × π / 180, π is replaced by 3.14, and the relationship between the reflection phase θ and the rotation angle ψ is formula (1):

[0020] θ=-0.07025ψ 4 -0.2521ψ 3 +0.2973ψ 2 +1.877ψ-0.467 (1);

[0021] Therefore, once the rotation angle is determined, the corresponding reflection phase can be inferred, and vice versa, which allows for fast and accurate continuous adjustment of the reflection phase.

[0022] When the frequency is 6.5 GHz, the smart metasurface gradually rotates from 0° to 90°, rotating 10° counterclockwise each time. During this process, the rotation angle and the reflection phase are in a one-to-one correspondence. At the same time, all the mentioned rotation angles and corresponding reflection phase values ​​need to be converted into radians (rad), radians = angle × π / 180, or radians = phase × π / 180, π is replaced by 3.14, and the relationship between the rotation angle ψ and the reflection phase θ is formula (2):

[0023] θ=-0.03936ψ 4 +0.04163ψ 3 +0.1103ψ 2 +1.87ψ-0.9189 (2);

[0024] Therefore, once the rotation angle is determined, the corresponding reflection phase can be inferred, and vice versa, which allows for fast and accurate continuous adjustment of the reflection phase.

[0025] When the frequency is 6.8 GHz, the smart metasurface gradually rotates from 0° to 90°, each time rotating 10° counterclockwise. During this process, the rotation angle and the reflection phase are in a one-to-one correspondence. At the same time, all the mentioned rotation angles and corresponding reflection phase values ​​need to be converted into radians (rad), radians = angle × π / 180, or radians = phase × π / 180, the value of π is set to 3.14, and the relationship between the rotation angle ψ and the reflection phase θ is formula (3):

[0026] θ=-0.111ψ 4 +0.2719ψ 3 -0.07556ψ 2 +1.874ψ-1.533 (3);

[0027] Therefore, once the rotation angle is determined, the corresponding reflection phase can be inferred, and vice versa, which allows for fast and accurate continuous adjustment of the reflection phase.

[0028] When the frequency is 7 GHz, the smart metasurface gradually rotates from 0° to 90°, each time rotating 10° counterclockwise. During this process, the rotation angle and the reflection phase are in a one-to-one correspondence. At the same time, all the mentioned rotation angles and corresponding reflection phase values ​​need to be converted into radians (rad), radians = angle × π / 180, or radians = phase × π / 180, π is replaced by 3.14, and the relationship between the rotation angle ψ and the reflection phase θ is formula (4):

[0029] θ=-0.03962ψ 4 +0.0834ψ 3 +0.2569ψ 2 +1.713ψ-1.929 (4);

[0030] Therefore, once the rotation angle is determined, the corresponding reflection phase can be inferred, and vice versa. This allows for fast and precise continuous adjustment of the reflection phase.

[0031] Furthermore, the square dielectric substrate and the cylindrical dielectric substrate are both F4B dielectric substrates.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] The present invention makes full use of the characteristic that the opening rotation angle of the annular metasurface unit is linearly related to the reflection phase, and drives the metasurface unit to rotate through the continuous rotation of the servo, so that the reflection phase can be continuously adjusted within the range of 0° to 180°. Compared with the method of opening a gap, the servo metal column is connected to the rotating part of the metasurface by punching, which not only effectively reduces the reflection attenuation, but also greatly improves the working bandwidth of the reflection unit. In addition, compared with the metasurface based on high-frequency diodes, the mechanical metasurface does not require any circuit power consumption after the regulation is completed.

[0034] Through the relationship between the rotation angle and the reflection phase at frequencies of 6.25 GHz, 6.5 GHz, 6.8 GHz, and 7 GHz proposed by the present invention, the reflection phase θ can be described by a polynomial of the rotation angle ψ. Once the rotation angle ψ is determined, the corresponding reflection phase θ can be directly given by the formula. Conversely, if a certain reflection phase is to be adjusted, the angle to be rotated can be directly obtained according to the formula, which is convenient for adjustment and greatly reduces the complexity of the algorithm. It can achieve rapid, accurate and continuous adjustment of the reflection phase. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Schematic diagram of the metasurface array structure of the present invention.

[0036] Figure 2 Schematic diagram of the structure of each layer of the intelligent super surface unit of the present invention.

[0037] Figure 3 Schematic diagram of the connection structure of the intelligent metasurface unit, the servo and the metal column of the present invention.

[0038] Figure 4 This is a top view of the smart metasurface unit of the present invention.

[0039] Figure 5 This is a bottom view of the smart metasurface unit of the present invention.

[0040] Figure 6 For the smart surface of the present invention within the operating frequency range, the smart metasurface is rotated to the left 10° each time from 0° to 90° to obtain a corresponding reflection amplitude broken line graph.

[0041] Figure 7 For the smart surface of the present invention within the operating frequency range, the smart metasurface is rotated to the left 10° each time from 0° to 90° to obtain a corresponding reflection phase broken line graph.

[0042] Figure 8 It is a line graph of the reflection phase change of the smart surface of the present invention at four frequency points.

[0043] Among them, 1. smart metasurface unit, 11. metal copper pattern, 12. cylindrical dielectric substrate, 13. square dielectric substrate, 14. metal copper plate, 15. circular hole, 2. metal column, 3. servo. DETAILED DESCRIPTION

[0044] Combine the following Figures 1 to 8 , the specific embodiments of the present invention are described in detail. In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0045] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0046] It should be noted that the circuit connections of the steering gear and the like involved in the present invention all adopt conventional circuit connection methods and do not involve any innovation.

[0047] Example

[0048] like Figure 1 and Figure 3 As shown, a mechanical broadband continuous phase adjustable intelligent metasurface system structure includes: an intelligent metasurface and a mechanical control unit, such as Figure 1 As shown, the smart metasurface includes a plurality of smart metasurface units 1, and the plurality of smart metasurface units 1 are arranged in an array, and each row and each column in the array has N smart metasurface units 1, such as Figure 2 As shown, each smart metasurface unit 1 includes a multi-layer structure, which includes, from bottom to top: a metal copper plate 14, a square dielectric substrate 13, a cylindrical dielectric substrate 12 and a metal copper pattern 11. The colors of the metal copper pattern 11 and the metal copper plate 14 are both yellow. The metal copper plate 14 is a square plate and has the same plate size as the square dielectric substrate 13. Figure 4As shown, the metal copper pattern 11 includes: two semi-circular metal coppers, which are symmetrically arranged with their inner ring surfaces facing each other, and there is a gap between the two ends of the two semi-circular metal coppers; the metal copper pattern 11 designed in this way has a relatively simple structure and is convenient to manufacture. It can not only design a metasurface with different electromagnetic characteristics by changing the size of the annular opening and the overall size of the ring; moreover, the open-ring structure is sensitive to the incident electromagnetic wave and can exhibit different transmission characteristics under different incident electromagnetic waves. Such as Figure 2 and Figure 5 As shown, circular small holes 15 are opened at the centers of both the metal copper plate 14 and the square dielectric substrate 13, and the circular small holes 15 of the metal copper plate 14 are aligned with the circular small holes 15 of the square dielectric substrate 13. Both the square dielectric substrate 13 and the cylindrical dielectric substrate 12 are F4B dielectric substrates.

[0049] The mechanical control unit is used to drive the rotation of the metasurface unit and includes a plurality of servos 3. Such as Figure 3 As shown, each servo 3 corresponds to an intelligent metasurface unit 1, and a metal column 2 is connected between the corresponding servo 3 and the intelligent metasurface unit 1. One end of the metal column 2 is connected to the output shaft of the servo 3, and the other end is inserted into the circular small holes 15 of the metal copper plate 14 and the circular small holes 15 of the square dielectric substrate 13. The model of the servo 3 is MG90S.

[0050] In some embodiments, the rotation angle range of the intelligent metasurface unit 1 controlled by the servo 3 is: 0° to 90°. The intelligent metasurface unit 1 rotates 10° to the left each time from 0° to 90°, and the corresponding reflection amplitude and reflection phase are obtained, namely 0°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°.

[0051] The simulation design method of each said intelligent metasurface unit 1 includes the following steps:

[0052] Step 1: The periodic side length P of the intelligent metasurface is a value smaller than the wavelength λ, that is, 0 < P < λ; where λ = c / f, c represents the speed of light in vacuum as 3×10 8 m / s, f represents the working frequency of the designed intelligent metasurface. The specific value of P is found through simulation and optimization adjustment by CST Studio Suite software to obtain the required specific value;

[0053] Step 2: The thickness h of the cylindrical dielectric substrate 12 is usually selected as a part of the wavelength at the working frequency, that is, 0 < h < λ / 4. Here, the wavelength λ is related to the relative permittivity ε r of the dielectric substrate, that is The specific value of h is found through simulation and optimization adjustment by CST Studio Suite software to obtain the required specific value;

[0054] Step 3: The thickness h1 of the square dielectric substrate is usually selected as a part of the wavelength at the operating frequency, which is λ / 4, i.e., h1 < λ / 4. Here, the wavelength λ is related to the relative permittivity ε of the dielectric substrate, that is r related, that is Since the value of h1 is greater than 0, so 0 < h1 < λ / 4. The specific value of h1 is found by simulating and optimizing through CST Studio Suite software to obtain the required specific value;

[0055] Step 4: In principle, the radius R of the outer ring should be less than a part of the wavelength at the operating frequency, which is λ / 4, i.e., R < λ / 4, where λ = c / f, c represents the speed of light in air or vacuum as 3×10 8 m / s, f represents the operating frequency of the designed intelligent metasurface. Here, the value of R is greater than 0, so 0 < R < λ / 4. The radius r of the inner ring is smaller than the radius R of the outer ring, i.e., 0 < r < R < λ / 4. The phase can be covered from 0° to 180° by using the difference between the two; the ring width w is directly equal to R - r, i.e., 0 < R - r < (λ / 4) - r. The specific values of R, r, and w are found by simulating and optimizing through CST Studio Suite software to obtain the required specific values;

[0056] Step 5: The opening gap g is also less than the wavelength at the operating frequency, which is λ / 10, i.e., 0 < g < λ / 10. The specific value of g is found by simulating and optimizing through CST Studio Suite software to obtain the required specific value;

[0057] Step 6: The size of the circular small hole 15r1 is determined according to the size of the actual metal column 2, and then the specific value is directly input into the CST Studio Suite software.

[0058] Simulation test

[0059] Design an intelligent metasurface with a center frequency f = 6.6 GHz and an operating frequency range of 5.9125 GHz to 7.125 GHz according to the above simulation design method. The specific parameters of the intelligent metasurface are shown in Table 1:

[0060] Table 1 Specific parameters of the intelligent metasurface

[0061]

[0062] The metasurface rotates 10° to the left from 0° to 90° each time, i.e., 0°, 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, to obtain the corresponding reflection amplitude and reflection phase.

[0063] Such as Figure 6As shown in the figure, when the frequency f=6.6GHZ, the reflection amplitude value can reach up to 0.99, and the frequency range covered by the reflection amplitude value of 0.9 is 6.25GHZ~7GHZ. The purpose of working bandwidth of at least 500MHz is achieved when the reflection attenuation is not higher than 0.1. Figure 7 As shown, any frequency point in this operating frequency range satisfies the reflection phase coverage of 0° to 180°.

[0064] Any reflection phase change between 0° and 180° can be achieved by rotating the smart metasurface. Here, four frequency points of 6.25 GHZ, 6.5 GHZ, 6.8 GHZ, and 7 GHZ in the working frequency range are selected to observe its reflection phase range. Figure 8 shown.

[0065] The relationship between the rotation angle ψ and the reflection phase θ at frequencies of 6.25 GHz, 6.5 GHz, 6.8 GHz, and 7 GHz is:

[0066] When the frequency is 6.25 GHz, the smart metasurface gradually rotates from 0° to 90°, each time rotating 10° counterclockwise. During this process, the rotation angle ψ and the reflection phase θ are in one-to-one correspondence. At the same time, all the mentioned rotation angles and corresponding reflection phase values ​​are converted into radians (rad), radians = angle (phase) × π / 180, π is replaced by 3.14, and the relationship between the reflection phase θ and the rotation angle ψ is formula (1):

[0067] θ=-0.07025ψ 4 -0.2521ψ 3 +0.2973ψ 2 +1.877ψ-0.467 (1);

[0068] When the frequency is 6.5 GHz, the smart metasurface gradually rotates from 0° to 90°, each time rotating 10° counterclockwise. During this process, the rotation angle ψ and the reflection phase θ are in one-to-one correspondence. At the same time, all the mentioned rotation angles and corresponding reflection phase values ​​need to be converted into radians (rad), radians = angle (phase) × π / 180, π is replaced by 3.14, and the relationship between the rotation angle ψ and the reflection phase θ is formula (2):

[0069] θ=-0.03936ψ 4 +0.04163ψ 3 +0.1103ψ 2 +1.87ψ-0.9189 (2);

[0070] When the frequency is 6.8 GHz, the smart metasurface gradually rotates from 0° to 90°, each time rotating 10° counterclockwise. During this process, the rotation angle ψ and the reflection phase θ are in one-to-one correspondence. At the same time, all the mentioned rotation angles and corresponding reflection phase values ​​need to be converted into radians (rad), radians = angle (phase) × π / 180, the value of π is set to 3.14, and the relationship between the rotation angle ψ and the reflection phase θ is formula (3):

[0071] θ=-0.111ψ 4 +0.2719ψ 3 -0.07556ψ 2 +1.874ψ-1.533 (3);

[0072] When the frequency is 7 GHz, the smart metasurface gradually rotates from 0° to 90°, each time rotating 10° counterclockwise. During this process, the rotation angle ψ and the reflection phase θ are in one-to-one correspondence. At the same time, all the mentioned rotation angles and corresponding reflection phase values ​​need to be converted into radians (rad), radians = angle (phase) × π / 180, π is replaced by 3.14, and the relationship between the rotation angle ψ and the reflection phase θ is formula (4):

[0073] θ=-0.03962ψ 4 +0.0834ψ 3 +0.2569ψ 2 +1.713ψ-1.929 (4);

[0074] The reflection phase θ can be described by a polynomial of the rotation angle ψ. Once the rotation angle ψ is determined, the corresponding reflection phase θ can be directly given by the formula. Conversely, if you want to adjust a certain reflection phase, you can directly get the angle to rotate according to the formula. The adjustment is convenient and the algorithm complexity is greatly reduced. The reflection phase can be adjusted quickly and accurately continuously.

[0075] It is worth noting that, in the above radian = angle (phase) × π / 180, the angle (phase) refers to the angle or the phase.

[0076] The above disclosures are only several preferred specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto. Any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A mechanical broadband continuous phase-adjustable intelligent metasurface system structure, characterized in that: Comprising: An intelligent metasurface, including a plurality of intelligent metasurface units (1), the plurality of intelligent metasurface units (1) are arranged in an array, and each of the intelligent metasurface units (1) includes a multi-layer structure, which are, from bottom to top in sequence: a metal copper plate (14), a square dielectric substrate (13), a cylindrical dielectric substrate (12), and a metal copper pattern (11)(11). The metal copper pattern (11) includes: two semi-circular metal copper patches, the two semi-circular metals are symmetrically arranged with their inner ring surfaces facing each other, and there is a gap between the two ends of the two semi-circular metals; circular small holes (15) are opened at the centers of both the metal copper plate (14) and the square dielectric substrate (13), and the circular small holes (15) of the metal copper plate (14) are aligned and communicated with the circular small holes (15) of the square dielectric substrate (13). A mechanical control unit, including a plurality of servos (3), each of the servos (3) corresponds to an intelligent metasurface unit (1), and a metal column (2) is connected between the corresponding servo (3) and the intelligent metasurface unit (1). One end of the metal column (2) is connected to the output shaft of the servo (3), and the other end is inserted into the circular small holes (15) of the metal copper plate (14) and the circular small holes (15) of the square dielectric substrate (13).

2. According to claim 1, a mechanical broadband continuous phase adjustable intelligent metasurface system structure is characterized in that: The metal copper plate (14) is a square plate and has the same plate surface size as the square dielectric substrate (13).

3. According to claim 1, a mechanical broadband continuous phase adjustable intelligent metasurface system structure is characterized in that: The rotation angle range of the servo (3) for controlling the intelligent metasurface unit (1) is: 0° to 90°.

4. According to claim 1, a mechanical broadband continuous phase adjustable intelligent metasurface system structure is characterized in that: The simulation design method of each intelligent metasurface unit (1) includes the following steps: Step 1: The periodic side length P of the intelligent metasurface is a value smaller than the wavelength λ, i.e., 0 < P < λ; where λ = c / f, c represents the speed of light in vacuum as 3×10 8 m / s, f represents the operating frequency of the designed intelligent metasurface, and the specific value of P is found by optimizing and adjusting through software simulation to obtain the required specific value; Step 2: The thickness h of the cylindrical dielectric substrate (12) is selected as a part of the wavelength at the operating frequency, i.e., 0 < h < λ / 4, where the wavelength λ is related to the relative dielectric constant ε of the dielectric substrate, i.e., r related to The specific value of h is found by optimizing and adjusting through software simulation to obtain the required specific value; Step 3: The thickness h1 of the square dielectric substrate is usually selected as a part of the wavelength at the operating frequency, which is λ / 4, i.e., h1 < λ / 4. Here, the wavelength λ is related to the relative dielectric constant ε of the dielectric substrate r That is Since the value of h1 is greater than 0, so 0 < h1 < λ / 4. The specific value of h1 is found by optimizing and adjusting through software simulation to obtain the required specific value; Step 4: The radius R of the outer ring is less than a part of the wavelength at the operating frequency, which is λ4, i.e., R < λ4, where λ = c / f, c represents the speed of light in air or vacuum, which is 3×10 8 m / s, f represents the frequency at which the designed intelligent metasurface operates. Here, the value of R is greater than 0, so 0 < R < λ4. The radius r of the inner ring is smaller than the radius R of the outer ring, i.e., 0 < r < R < λ4. The phase can cover 0° to 180° by designing according to the difference between the two; the ring width w is directly equal to R - r, i.e., 0 < R - r < (λ4) - r. The specific values of R, r, and w are found by software simulation and optimization to obtain the required specific values; Step 5: The opening gap g is also less than the wavelength λ10 at the operating frequency, that is, 0 < g < λ10. The specific value of g is found by optimizing and adjusting through software simulation to obtain the required specific value. Step 6: Set the size of the circular small hole (15) r1 according to the radius of the actually used metal column (2), and then directly input the specific value into the software.

5. The mechanical broadband continuous phase-adjustable intelligent metasurface system structure according to claim 4 is characterized in that: Both the metal copper pattern (11) and the metal copper plate (14) are yellow.

6. The mechanical broadband continuous phase-adjustable intelligent metasurface system structure according to claim 3 is characterized in that: The intelligent metasurface unit (1) rotates 10° to the left each time from 0° to 90°, and the corresponding reflection amplitude and reflection phase are obtained.

7. The mechanical broadband continuous phase-adjustable intelligent metasurface system structure according to claim 6 is characterized in that: The relational formula between the rotation angle ψ and the reflection phase θ when the frequencies are 6.25 GHz, 6.5 GHz, 6.8 GHz, and 7 GHz is: When the frequency is 6.25 GHz, the intelligent metasurface gradually rotates from 0° to 90°, rotating 10° counterclockwise each time. During this process, the rotation angle ψ and the reflection phase θ have a one-to-one correspondence. At the same time, all the mentioned rotation angles and the corresponding reflection phase values are converted into radians. Radian = angle × π / 180, or radian = phase × π / 180. π is replaced by 3.

14. The relationship between the reflection phase θ and the rotation angle ψ is formula (1): θ=-0.07025ψ 4 -0.2521ψ 3 +0.2973ψ 2 +1.877ψ-0.467 (1); When the frequency is 6.5 GHz, the smart metasurface gradually rotates from 0° to 90°, each time rotating counterclockwise by 10°. During this process, the rotation angle ψ and the reflection phase θ have a one-to-one correspondence. At the same time, all the mentioned rotation angles and corresponding reflection phase values ​​need to be converted into radians. Radians = angle × π / 180, or radians = phase × π / 180, where π is replaced by 3.

14. The relationship between the rotation angle ψ and the reflection phase θ is expressed as formula (2): θ=-0.03936ψ 4 +0.04163ψ 3 +0.1103ψ 2 +1.87ψ-0.9189 (2); When the frequency is 6.8 GHz, the smart metasurface gradually rotates from 0° to 90°, each time rotating counterclockwise by 10°. During this process, the rotation angle ψ and the reflection phase θ have a one-to-one correspondence. At the same time, all the mentioned rotation angles and corresponding reflection phase values ​​need to be converted into radians. Radians = angle × π / 180, or radians = phase × π / 180, where π is replaced by 3.

14. The relationship between the rotation angle ψ and the reflection phase θ is expressed as formula (3): θ=-0.111ψ 4 +0.2719ψ 3 -0.07556ψ 2 +1.874ψ-1.533 (3); When the frequency is 7 GHz, the smart metasurface gradually rotates from 0° to 90°, each time rotating counterclockwise by 10°. During this process, the rotation angle ψ and the reflection phase θ are in one-to-one correspondence. At the same time, all the mentioned rotation angles and corresponding reflection phase values ​​need to be converted into radians. Radians = angle × π / 180, or radians = phase × π / 180, where π is replaced by 3.

14. The relationship between the rotation angle ψ and the reflection phase θ is expressed as formula (4): θ=-0.03962ψ 4 +0.0834ψ 3 +0.2569ψ 2 +1.713ψ-1.929 (4).

8. The mechanical broadband continuous phase-adjustable intelligent metasurface system structure according to claim 1, characterized in that: The square dielectric substrate (13) and the cylindrical dielectric substrate (12) are both F4B dielectric substrates.

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