WO2023029153A1

WO2023029153A1 - Holographic antenna, control method, computer device, and storage medium

Info

Publication number: WO2023029153A1
Application number: PCT/CN2021/124172
Authority: WO
Inventors: 章秀银; 姚逸慧; 苏华峰; 周哲; 杨波; 伍尚坤; 高霞; 高永振
Original assignee: 华南理工大学; 京信网络系统股份有限公司
Priority date: 2021-09-06
Filing date: 2021-10-15
Publication date: 2023-03-09
Also published as: CN113471716A; CN113471716B

Abstract

The present application relates to a holographic antenna, a control method, a computer device, and a storage medium. The holographic antenna comprises a first dielectric plate, and a first metal plate and a second metal plate, which are respectively attached to a first surface and a second surface of the first dielectric plate. A first electromagnetic band gap array and a second electromagnetic band gap array, which are symmetrical on each of the plates, respectively form a first artificial magnetic surface and a second artificial magnetic surface; a first power divider and a second power divider, which are integrated on the first dielectric plate, and the first artificial magnetic surface and the second artificial magnetic surface form a cavity structure between the first metal plate and the second metal plate; and the first metal plate is provided with a gap array, which is located on one face of the cavity structure. The first artificial magnetic surface and the second artificial magnetic surface are used to convert, in the cavity structure, TE waves which are generated between the first metal plate and the second metal plate by the first power divider and the second power divider into quasi-TEM waves. The gap array is used to control the radiation of the quasi-TEM waves in the cavity structure. By means of the holographic antenna, the complexity of an antenna structure can be reduced.

Description

Holographic antenna, control method, computer device and storage medium

technical field

The present application relates to the technical field of direct current transmission, in particular to a holographic antenna, a control method, computer equipment and a storage medium.

Background technique

Antenna is an important part of a wireless communication system, and its main function is to transmit and receive wireless signals. With the rapid development of modern wireless communication technology, the requirements for the performance of the antenna itself are getting higher and higher, which is specifically reflected in the higher and higher requirements for the directivity of the antenna beam, such as the ability to realize beam scanning.

In the prior art, the most common array antenna is a phased array antenna. Although the phased array antenna has beam scanning control capability, since the phased array antenna is composed of many arrays, these arrays usually include oscillators, slots, etc., and each array is usually controlled separately, resulting in its internal structure. Complexity makes its manufacturing process cumbersome and costly.

Contents of the invention

Based on this, it is necessary to provide a holographic antenna, a control method, a computer device and a storage medium for the above technical problems. While capable of beam scanning, the complexity of the antenna structure is reduced.

A holographic antenna, the holographic antenna includes a first dielectric plate, a first metal plate is attached to the first surface of the first dielectric plate, and a second metal plate is attached to the second surface; the first metal plate, the Both the first dielectric plate and the second metal plate are provided with a symmetrical first electromagnetic bandgap array and a second electromagnetic bandgap array, the first electromagnetic bandgap array forms a first artificial magnetic surface, and the second The electromagnetic bandgap array forms a second artificial magnetic surface; the first dielectric board is integrated with a symmetrical first power divider and a second power divider; the first power divider, the second power divider, The first artificial magnetic surface and the second artificial magnetic surface form a cavity structure between the first metal plate and the second metal plate; the first metal plate is provided with an array of slots, and the slots The array is located on one side of the cavity structure.

The first power divider and the second power divider are used to generate transverse electro (TE) waves between the first metal plate and the second metal plate.

The first artificial magnetic surface and the second artificial magnetic surface are used to convert the TE wave into a quasi-transverse electromagnetic (TEM) wave in the cavity structure.

The slot array is used to control the radiation of the quasi-TEM wave in the cavity structure.

In one of the embodiments, the edge of the first electromagnetic bandgap array set in the material plate coincides with the first edge of the first metal plate, and the second electromagnetic bandgap array set in the first metal plate The edge of the gap array coincides with the second edge of the first metal plate; the first edge is symmetrical to the second edge; the material plate is the first metal plate, the first dielectric plate and the Any one of the second metal plates.

In one of the embodiments, the input end of the first power divider coincides with the third edge of the first dielectric plate; the input end of the second power divider coincides with the fourth edge of the first dielectric plate The edges coincide, and the third edge is symmetrical to the fourth edge.

In one of the embodiments, the holographic antenna further includes a plurality of control circuits; each control circuit includes a radio frequency switch; the radio frequency switch is in one-to-one correspondence with the slots in the slot array;

The control circuit is used to apply different DC bias voltages to the positive and negative poles of the radio frequency switch to control the on-off state of the radio frequency switch;

The radio frequency switch is used to control the quasi-TEM wave in the cavity structure to radiate through the slit through an on-off state.

In one of the embodiments, the electromagnetic bandgap array is a mushroom type electromagnetic field bandgap (electromagnetic bandgap, EBG) structure; the electromagnetic bandgap array includes the first electromagnetic bandgap array and the second electromagnetic bandgap array .

In one of the embodiments, the first power divider and the second power divider both include N waveguide branches, and the first artificial magnetic surface and the second artificial magnetic surface are used to receive and convert The TE wave radiated by the waveguide branch in the cavity structure is converted into the quasi-TEM wave, and the waveguide branch is formed by at least one metallized via hole in the first dielectric plate.

In one of the embodiments, both the first power divider and the second power divider are one-to-eight power dividers.

A control method applied to the above-mentioned holographic antenna, the method comprising:

Obtain the beam pointing information of the holographic antenna and the orientation information of the slots in the slot array.

Determine the on-off value of the radio frequency switch on the slot according to the beam pointing information and the slot orientation information in the slot array.

The on-off state of the radio frequency switch is controlled according to the on-off value.

A computer device, comprising a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

The on-off value of the radio frequency switch on the slot is determined according to the beam pointing information and the slot orientation information in the slot array.

A computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

The above-mentioned holographic antenna, control method, computer equipment, and storage medium form a symmetric The first artificial magnetic surface and the second artificial magnetic surface; and utilizing the symmetrical first artificial magnetic surface and the second artificial magnetic surface to convert the TE waves transmitted into the cavity structure through the first power divider and the second power divider For the quasi-TEM wave, a transverse electromagnetic field is generated. The radiation of the quasi-TEM wave in the cavity structure is controlled by the slit array, and the beam of arbitrary orientation and the scanning of the beam in elevation angle and azimuth angle are realized. And it has the characteristics of simple structure, easy processing and low cost.

Description of drawings

FIG. 1 is a schematic diagram of an exploded structure of a holographic antenna in an embodiment;

Figure 2 is a top view of a holographic antenna in one embodiment;

Fig. 3 is a structural schematic diagram of an electromagnetic bandgap array in an embodiment;

Fig. 4 is a schematic structural diagram of a slot unit loaded with a radio frequency switch in an embodiment;

Fig. 5 is a structural schematic diagram of a mushroom-type electromagnetic field bandgap EBG structure in an embodiment;

Fig. 6 is a schematic structural diagram of a power divider in an embodiment;

Fig. 7 is a schematic diagram of the waveform of an electromagnetic wave in an embodiment;

Fig. 8 is a schematic flow chart of a control method in an embodiment;

Figure 9 is an internal block diagram of a computer device in one embodiment.

Component label description:

The second power divider: 7; the second metal plate: 3; the second artificial magnetic surface: 5; the first power divider: 6; the first dielectric plate: 2; the first metal plate: 1; the first artificial magnetic surface : 4; slot array: 8; slot top: 9; cavity structure: 10; radio frequency switch: 11; control circuit: 12.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

It can be understood that the terms "first", "second" and the like used in this application may be used to describe various elements herein, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first metal plate could be termed a second metal plate, and, similarly, a second metal plate could be termed a first metal plate, without departing from the scope of the present application. Both the first metal plate and the second metal plate are metal plates, but they are not the same metal plate.

Referring to Fig. 1, the embodiment of the present application provides a holographic antenna, which includes a first dielectric plate 2, a first metal plate 1 is attached to the first surface of the first dielectric plate 2, and a second metal plate is attached to the second surface 3. The first metal plate 1, the first dielectric plate 2, and the second metal plate 3 are all provided with a symmetrical first electromagnetic bandgap array and a second electromagnetic bandgap array, and the first electromagnetic bandgap array forms a first artificial magnetic surface 4. The second electromagnetic bandgap array forms a second artificial magnetic surface 5; a symmetrical first power divider 6 and a second power divider 7 are integrated on the first dielectric plate 2; the first power divider 6 and the second power divider The divider 7, the first artificial magnetic surface 4 and the second artificial magnetic surface 5 form a cavity structure 10 between the first metal plate 1 and the second metal plate 3; the first metal plate 1 is provided with a slit array 8, and the slit array 8 is located on one side of the cavity structure 10 .

Wherein, the first power divider 6 and the second power divider 7 are used to generate a transverse electric wave TE wave between the first metal plate 1 and the second metal plate 3 . The first artificial magnetic surface 4 and the second artificial magnetic surface 5 are used for converting TE waves into transverse electromagnetic quasi-TEM waves in the cavity structure 10 . The slot array 8 is used to control the radiation of the quasi-TEM wave in the cavity structure 10 .

Specifically, metals such as copper can be used as the material of the first metal plate 1 and the second metal plate 3 . In addition, as a material of the first dielectric plate 2 , glass such as quartz glass, fluorine-based resin such as PTFE, liquid crystal polymer, cycloolefin polymer, or the like can be used. The first dielectric plate 2, the first metal plate 1 and the second metal plate 3 are rectangular plates of the same size.

It should be noted that the first surface and the second surface of the first metal plate 1 , the first dielectric plate 2 and the second metal plate 3 may be rectangular plates of the same size. According to actual application requirements, the first metal plate 1, the first dielectric plate 2, and the second metal plate 3 have the same or different thicknesses, and the first metal plate 1, the first dielectric plate 2, and the second metal plate 3 have first surface and the second surface, the orientation of the first surface of the first metal plate 1, the first dielectric plate 2 and the second metal plate 3 is the same, the first metal plate 1, the first dielectric plate 2 and the second metal plate 3 The orientation of the two surfaces is the same.

It can be understood that the second surface of the first metal plate 1 is attached to the first surface of the first dielectric plate 2 , and the second surface of the first dielectric plate 2 is attached to the first surface of the second metal plate 3 .

It can be understood that, as shown in FIG. 1, the first power divider 6, the second power divider 7, the first dielectric plate 2, the first metal plate 1 and the second metal plate 3 form a substrate integrated waveguide (substrate integrated waveguide, SIW). Specifically, the SIW structure is composed of upper and lower metal surfaces and metal columns arranged periodically on both sides. The two rows of metal columns are equivalent to the two side walls of the SIW. spread. This space is the cavity structure 10 mentioned above. The thickness of the first metal plate 1 and the second metal plate 3 is less than half of the waveguide wavelength.

Referring to FIG. 1 in conjunction with FIG. 2 , the slot array 8 in the first metal plate 1 includes a plurality of slots. The slits are rectangular openings formed in the first metal plate 1 , and the slit array 8 is arranged in a matrix in a plan view of the hologram antenna. Here, the term "plan view" refers to viewing the object from the positive direction of the z-axis on the coordinate system shown in FIG. 1 .

Specifically, the transverse interval between the centers of the slits is slightly greater than 0.42 times the wavelength, and the longitudinal interval is slightly greater than 0.2 times the wavelength. The length of the slit is about 0.35 times the wavelength, and the width is about 0.043 times the wavelength.

It should be noted that, in order to better show the internal structure of the holographic antenna, FIG. 1 shows a layered structure, which is mainly layered according to the structure of the first metal plate 1 , the first dielectric plate 2 and the second metal plate 3 . In practical application, the first metal plate 1 , the first dielectric plate 2 and the second metal plate 3 are laminated according to the above-mentioned combination method to form a holographic antenna.

As shown in Figure 2, when looking down at the holographic antenna, if the slot array 8 can be equivalent to a rectangle, the first power divider 6 and the second power divider 7 shown in Figure 2 are respectively located at a, Both sides of side b. The first electromagnetic bandgap array and the second electromagnetic bandgap array on the first metal plate 1 are located on both sides of sides c and d of the rectangle.

The above-mentioned holographic antenna forms a symmetrical first artificial magnetic surface 4 and The second artificial magnetic surface 5; and utilize the symmetrical first artificial magnetic surface 4 and the second artificial magnetic surface 5 to transform the TE wave transmitted to the cavity structure 10 by the first power divider 6 and the second power divider 7 For the quasi-TEM wave, a transverse electromagnetic field is generated. The radiation of the quasi-TEM wave in the cavity structure 10 is controlled by the slit array 8 , so as to realize arbitrary directional beams and scanning of the beams in elevation angle and azimuth angle. And it has the characteristics of simple structure, easy processing and low cost.

In one embodiment, referring to FIG. 2 , the first power divider 6 and the second power divider 7 are both one-to-eight power dividers.

Optionally, the 1-to-8 power divider may be composed of 7 1-to-2 power dividers, and each 1-to-2 power divider includes 1 input terminal and 2 output terminals. Specifically, two output terminals of a 1-to-2 power divider are respectively connected to input terminals of a 1-to-2 power divider to form a 1-to-4 power divider. The one-to-four power splitter includes one input terminal and four output terminals. Then the four output ends of the one-to-four power splitter are respectively connected to the input ends of a one-to-two power splitter to finally form a one-to-eight power splitter. One minute and eight power points include 1 input terminal and 8 output terminals.

Further, the first power divider 6 and the second power divider 7 can be selected according to actual conditions, such as a one-to-two power divider, a one-to-four power divider or a one-to-sixteen power divider.

In this embodiment, both the first power divider 6 and the second power divider 7 are specifically one-to-eight power dividers, so as to realize the propagation of electromagnetic waves.

In one embodiment, as shown in FIG. 1, the edge of the first electromagnetic bandgap array set in the material plate coincides with the first edge of the first metal plate 1, and the second electromagnetic bandgap array set in the first metal plate 1 The edge of the array coincides with the second edge of the first metal plate 1 ; the first edge is symmetrical to the second edge; the material plate is any one of the first metal plate 1 , the first dielectric plate 2 and the second metal plate 3 .

Specifically, the first electromagnetic bandgap array or the second electromagnetic bandgap array in the first metal plate 1, the first dielectric plate 2 or the second metal plate 3 can be arranged with reference to the manner shown in FIG. 3 . Specifically, the first electromagnetic bandgap array or the second electromagnetic bandgap array is configured in a matrix and arranged in a matrix display form to obtain an electromagnetic bandgap array with w rows and u columns.

In an implementation manner, the surface distance between two adjacent patches in the electromagnetic bandgap array is less than half the working wavelength.

In this implementation, the edges of the first electromagnetic bandgap array set in the first metal plate 1, the first dielectric plate 2, or the second metal plate 3 are connected to the corresponding first metal plate 1, first dielectric plate 2, or The first edge of the second metal plate 3 coincides, and the edge of the second electromagnetic bandgap array set in the first metal plate 1, the first dielectric plate 2 or the second metal plate 3 and the corresponding first metal plate 1, the first edge of the second metal plate 3 respectively A setting method in which the second edges of the dielectric plate 2 or the second metal plate 3 overlap; the area of the first metal plate 1, the first dielectric plate 2, and the second metal plate 3 can be minimized to reduce the size of the holographic antenna volume of.

In one embodiment, referring to Fig. 1, the input end of the first power divider 6 coincides with the third edge of the first dielectric plate 2; the input end of the second power divider 7 coincides with the fourth edge of the first dielectric plate 2 Coincident, the third edge is symmetrical to the fourth edge.

Specifically, the first dielectric plate 2 , the first metal plate 1 and the second metal plate 3 shown in FIG. 1 are rectangular plates of the same size. The rectangular plate can be equivalent to a rectangle, which includes two long sides e, f and two short sides g, h. Therefore, the input end of the first power divider 6 coincides with the third edge of the first dielectric plate 2; the input end of the second power divider 7 coincides with the fourth edge of the first dielectric plate 2, which can be understood as the first work The input end of the divider 6 coincides with the side g of the first dielectric plate 2 , and the input end of the second power divider 7 coincides with the side h of the first dielectric plate 2 .

In this embodiment, the input end of the first power divider 6 coincides with the third edge of the first dielectric plate 2; the input end of the second power divider 7 coincides with the fourth edge of the first dielectric plate 2. , can minimize the areas of the first metal plate 1 , the first dielectric plate 2 and the second metal plate 3 , and further reduce the volume of the holographic antenna.

In one embodiment, referring to FIG. 1 , the holographic antenna further includes a plurality of control circuits 12 ; each control circuit 12 includes a radio frequency switch 11 ; the radio frequency switch 11 corresponds to the slots in the slot array 8 one by one.

Wherein, the control circuit 12 is used to apply different DC bias voltages to the positive and negative poles of the radio frequency switch 11 to control the on-off state of the radio frequency switch 11 . The radio frequency switch 11 is used to control the quasi-TEM wave in the cavity structure 10 to radiate through the slit through the on-off state.

In one implementation, the holographic antenna further includes a second dielectric plate, on which a plurality of control circuits 12 are loaded; the second dielectric plate is attached to the first surface of the first metal plate 1, and the radio frequency switch 11 and the slit The slots in the array 8 correspond one by one.

Example 1, referring to FIG. 4 , an opening of the same size as the slit is opened in the second dielectric plate, and the opening is located directly above the slit, and the radio frequency switch 11 of the control circuit 12 is disposed at the opening.

Example 2, the second dielectric board includes a first surface and a second surface, and the control circuit 12 may be loaded on the second surface of the second dielectric board.

It should be noted that the second dielectric plate can be a rectangular plate with the same size as the first metal plate 1 , or a rectangular plate with the same area as the slit array 8 . The first surface of the first metal plate 1 is attached to the second surface of the second dielectric plate.

Optionally, the radio frequency switch 11 may be a PIN diode or a varactor. It can be understood that a PIN diode is loaded on the control circuit 12 of each slot in the slot array 8. When the positive and negative poles of the PIN diode are applied with a reverse bias voltage, the PIN diode is in a cut-off state, the coupling path is disconnected, and the slot can radiate A quasi-TEM wave is emitted; when a forward bias voltage is applied to the positive and negative poles of the PIN diode, the PIN diode is in a conduction state, the coupling channel couples the slit to radiate energy and resonates, no effective radiation is produced, and the slit cannot radiate quasi-TEM waves.

In this embodiment, the on-off state of the radio frequency switch 11 is controlled by the control circuit 12, and then the quasi-TEM wave in the cavity structure 10 is controlled to radiate through the slit, so as to achieve the purpose of controlling the beam direction of the holographic antenna, thereby realizing arbitrary directional beams and beams Scanning in pitch and azimuth.

In one embodiment, referring to FIG. 1 , the electromagnetic bandgap array is a mushroom-shaped electromagnetic field bandgap EBG structure; the electromagnetic bandgap array includes a first electromagnetic bandgap array and a second electromagnetic bandgap array.

Exemplarily, referring to FIG. 5 , the mushroom-shaped electromagnetic field bandgap EBG structure is specifically perforated to the substrate, that is, periodically arranged holes are punched on the substrate, and other media can be filled in the holes to form metallized via holes. The shape of the holes can be round and square. The base here specifically refers to the first metal plate 1 , the first dielectric plate 2 and the second metal plate 3 .

In this embodiment, the electromagnetic bandgap array adopts a mushroom-shaped electromagnetic field bandgap EBG structure, thereby constituting an equivalent artificial magnetic surface, so as to convert TE waves into quasi-TEM waves.

In one embodiment, the first power divider 6 and the second power divider 7 each include N waveguide branches, and the first artificial magnetic surface 4 and the second artificial magnetic surface 5 are used to receive and transform the waveguide branch radiation in The TE wave in the cavity structure 10 is converted into a quasi-TEM wave, and the waveguide branch is formed by at least one metallized via hole in the first dielectric plate 2 .

It can be understood that, as shown in FIG. 6, the first power divider 6 and the second power divider 7, in the case of a one-to-eight power divider, include 8 waveguide branches, and what is conducted in the power divider is The TE wave, when the TE wave enters the cavity structure 10, is transformed into a quasi-TEM wave.

In this embodiment, the TE waves are transmitted to the cavity structure 10 through the N waveguide branches included in the first power divider 6 and the second power divider 7, so that the first artificial magnetic surface 4 and the second artificial magnetic surface The surface 5 can convert the TE wave into a quasi-TEM wave, thereby generating a transverse electromagnetic field. The TE wave and the TEM wave specifically refer to the schematic diagram shown in FIG. 7 . The channel indicated by the dotted line shown in FIG. 6 can be understood as a waveguide branch, and the arrow indicates the transmission direction of the electromagnetic wave.

As shown in Figure 8, the embodiment of the present application also provides a control method, which is applied to the holographic antenna of the embodiment of the present application, and the control method includes the following steps:

S11. Obtain beam pointing information of the holographic antenna and slot orientation information in the slot array.

Specifically, the beam pointing information of the holographic antenna includes: a preset azimuth angle and a preset elevation angle. The slot orientation information includes the slot's azimuth relative to the x-axis in polar coordinates.

S12. Determine the on-off value of the radio frequency switch on the slot according to the beam pointing information and the slot orientation information in the slot array.

Specifically, the on-off value of the radio frequency switch is calculated according to the following method:

Among them, A represents the state value of the RF switch, θ ₀ ,

Preset beam pointing for the antenna,

is the azimuth angle of the radiating element on the upper surface of the parallel plate waveguide relative to the x-axis in the polar coordinate system, k ₀ is the wave number in free space. In actual operation, in order to simplify the number of switch states and take into account the caliber efficiency, the RF switch state value is approximated according to the following formula to obtain the on-off value of the RF switch:

Among them, I represents the on-off value of the radio frequency switch. 0 means to turn off the radio frequency switch, and 1 means to turn on the radio frequency switch 11 . For example, when A=0.3, I=0.

In the above formula, the dimension of the slot array and the polar coordinate system with the geometric center of the holographic antenna as the origin can be determined with the help of Matlab. The polar radius and polar angle values of each slot relative to the origin can only be changed in the code. The preset beam pointing information θ ₀ ,

Then you can get the preset beam pointing down, the on-off value of each RF switch on the slot array, and finally form a bias distribution matrix composed of 0 and 1, and correspond the bias distribution matrix to the control circuit through the DC bias The bias voltage output by the circuit to the RF switch controls its on-off state.

S13. Control the on-off state of the radio frequency switch according to the on-off value.

In the above control method, the on-off state of the radio frequency switch on each slot in the slot array is determined through the beam pointing information of the holographic antenna and the slot orientation information in the slot array, so as to obtain the required beam pointing, and can accurately realize arbitrary pointing. The beam and the scanning of the beam in elevation and azimuth.

It should be understood that although the various steps in the flow chart of FIG. 7 are shown sequentially as indicated by the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in FIG. 7 may include multiple steps or stages, and these steps or stages are not necessarily executed at the same time, but may be executed at different times, and the execution order of these steps or stages is also It is not necessarily performed sequentially, but may be performed alternately or alternately with other steps or at least a part of steps or stages in other steps.

In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure may be as shown in FIG. 9 . The computer device includes a processor, memory and a network interface connected by a system bus. Wherein, the processor of the computer device is used to provide calculation and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs and databases. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database of the computer device is used to store the obtained DC bus voltage, DC neutral bus voltage and AC bus three-phase voltage. The network interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, a control method is realized.

Those skilled in the art can understand that the structure shown in FIG. 9 is only a block diagram of a partial structure related to the solution of this application, and does not constitute a limitation on the computer equipment to which the solution of this application is applied. The specific computer equipment can be More or fewer components than shown in the figures may be included, or some components may be combined, or have a different arrangement of components.

In one embodiment, a computer device is provided, including a memory and a processor, a computer program is stored in the memory, and the processor implements the following steps when executing the computer program:

In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the computer programs can be stored in a non-volatile computer-readable memory In the medium, when the computer program is executed, it may include the processes of the embodiments of the above-mentioned methods. Wherein, any reference to memory, storage, database or other media used in the various embodiments provided in the present application may include at least one of non-volatile memory and volatile memory. Non-volatile memory may include read-only memory (Read-Only Memory, ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

The technical features of the above embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered to be within the range described in this specification.

The above-mentioned embodiments only represent several implementation modes of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the scope of the patent for the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims

A holographic antenna, characterized in that the holographic antenna includes a first dielectric plate, a first metal plate is attached to the first surface of the first dielectric plate, and a second metal plate is attached to the second surface; the first The metal plate, the first dielectric plate and the second metal plate are all provided with a symmetrical first electromagnetic bandgap array and a second electromagnetic bandgap array, and the first electromagnetic bandgap array forms a first artificial magnetic surface, The second electromagnetic bandgap array forms a second artificial magnetic surface; a symmetrical first power divider and a second power divider are integrated on the first dielectric plate; the first power divider, the second power divider The power divider, the first artificial magnetic surface and the second artificial magnetic surface form a cavity structure between the first metal plate and the second metal plate; the first metal plate is provided with a slot array , the slit array is located on one side of the cavity structure;

The first power divider and the second power divider are used to generate a transverse electric wave TE wave between the first metal plate and the second metal plate;

The first artificial magnetic surface and the second artificial magnetic surface are used to convert the TE wave into a quasi-transverse electromagnetic wave TEM wave in the cavity structure;

The slot array is used to control the radiation of the quasi-TEM wave in the cavity structure.
The holographic antenna according to claim 1, characterized in that, the edge of the first electromagnetic bandgap array set in the material plate coincides with the first edge of the first metal plate, and the edge of the first metal plate set in the first metal plate The edge of the second electromagnetic bandgap array coincides with the second edge of the first metal plate; the first edge is symmetrical to the second edge; the material plate is the first metal plate, the Any one of the first dielectric plate and the second metal plate.
The holographic antenna according to claim 1 or 2, wherein the input end of the first power divider coincides with the third edge of the first dielectric plate; the input end of the second power divider coincides with the third edge of the first dielectric plate; The fourth edge of the first dielectric board coincides, and the third edge is symmetrical to the fourth edge.
The holographic antenna according to claim 1, wherein the holographic antenna further includes a plurality of control circuits; each control circuit includes a radio frequency switch; the radio frequency switch corresponds to the slots in the slot array one by one;

The control circuit is used to apply different DC bias voltages to the positive and negative poles of the radio frequency switch to control the on-off state of the radio frequency switch;

The radio frequency switch is used to control the quasi-TEM wave in the cavity structure to radiate through the slit through an on-off state.
The holographic antenna according to claim 1, wherein the electromagnetic bandgap array is a mushroom type electromagnetic field bandgap EBG structure; the electromagnetic bandgap array includes the first electromagnetic bandgap array and the second electromagnetic bandgap array array.
The holographic antenna according to claim 1, wherein the first power divider and the second power divider both include N waveguide branches, and the first artificial magnetic surface and the second artificial magnetic surface The magnetic surface is used to receive and transform the TE wave radiated by the waveguide branch in the cavity structure into the quasi-TEM wave, and the waveguide branch is metallized by at least one of the first dielectric plates Via formation.
The holographic antenna according to claim 1, wherein the first power divider and the second power divider are both one-to-eight power dividers.
A control method, which is applied to the holographic antenna according to any one of claims 1-7, the method comprising:

Obtain the beam pointing information of the holographic antenna and the orientation information of the slots in the slot array;

determining on-off values of radio frequency switches on the slots according to the beam pointing information and slot orientation information in the slot array;

The on-off state of the radio frequency switch is controlled according to the on-off value.
A computer device, comprising a memory and a processor, the memory stores a computer program, wherein the processor implements the steps of the method according to claim 8 when executing the computer program.
A computer-readable storage medium on which a computer program is stored, wherein the computer program implements the steps of the method according to claim 8 when the computer program is executed by a processor.