Antenna, antenna pattern reconstruction method and communication equipment

Abstract

The invention discloses an antenna, an antenna pattern reconstruction method and communication equipment. The antenna comprises a dielectric substrate, a grounding plate, a dual-frequency radiation unit, a feed port, a first frequency band parasitic unit, a second frequency band parasitic unit, a plurality of diodes and a control circuit, the bottom of the dielectric substrate is connected with the grounding plate, and the dual-frequency radiation unit is arranged at the top of the dielectric substrate; the top of the grounding plate is provided with a feed port. The first frequency band parasitic unit is arranged on the side, away from the feed port, of the double-frequency radiation unit, the second frequency band parasitic unit is arranged on any side of the double-frequency radiation unit, and the first frequency band parasitic unit and the second frequency band parasitic unit are arranged in a staggered mode; the control circuit is used for controlling the first frequency band parasitic unit or the second frequency band parasitic unit to be in a working state. According to the invention, the technical problem of poor communication effect of the antenna caused by mutual influence of parasitic units for different frequency bands is solved.

Description

Technical Field

[0001] The present invention relates to the field of antenna technology, and in particular to an antenna, an antenna pattern reconstruction method and a communication device. Background Art

[0002] The current wireless LAN system is widely used in residents' daily lives and corporate workplaces. Signals are sent and received through routers. The performance of the antenna in the entire transceiver system is crucial and determines the signal transmission distance and signal transmission quality.

[0003] In the related art, there are 2.4G and 5G dual-band reconfigurable antennas. The antennas generally include 2.4G parasitic units and 5G parasitic units, which can achieve adjustable radiation directions in the 2.4G and 5G frequency bands. However, the 2.4G parasitic units and 5G parasitic units will affect each other. When the 2.4G parasitic unit of the antenna is turned on, the 2.4G radiation pattern becomes directional and the 5G radiation pattern also changes significantly, resulting in poor communication effect of the antenna.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide an antenna, an antenna pattern reconstruction method and a communication device, so as to at least solve the technical problem that the communication effect of the antenna is poor due to the mutual influence of parasitic units used in different frequency bands.

[0006] According to one aspect of an embodiment of the present invention, an antenna is provided, comprising: a dielectric substrate, a ground plane, a dual-frequency radiation unit, a feeding port, a first frequency band parasitic unit, a second frequency band parasitic unit, and a control circuit, wherein the bottom of the dielectric substrate is connected to the ground plane, and the top of the dielectric substrate is provided with a dual-frequency radiation unit; the top of the ground plane is provided with a feeding port, and the feeding port is located at the center of the dual-frequency radiation unit; the first frequency band parasitic unit is arranged on a side of the dual-frequency radiation unit away from the feeding port, the second frequency band parasitic unit is arranged on any side of the dual-frequency radiation unit, and the first frequency band parasitic unit and the second frequency band parasitic unit are staggered, wherein the dual-frequency radiation unit, the first frequency band parasitic unit and the second frequency band parasitic unit are not colinear; the control circuit is used to control the first frequency band parasitic unit or the second frequency band parasitic unit to be in a working state.

[0007] Optionally, the first frequency band parasitic unit is located on an extension line of the axis of the dual-frequency radiation unit.

[0008] Optionally, the second frequency band parasitic unit is a rectangular structure, one end of the second frequency band parasitic unit is connected to the feeding port, and the other end points in a direction away from the feeding port.

[0009] Optionally, the dual-frequency radiation unit includes a radiator with a gradually varying size, wherein the radiator with a gradually varying size includes an end connected to the feeding port and an end away from the feeding port, and the size of the end is smaller than that of the end connected to the feeding port.

[0010] Optionally, the end of the dual-frequency radiation unit is connected to a matching branch, and the matching branch includes a rectangular radiator.

[0011] Optionally, the control circuit is provided with an inductor for reducing electromagnetic radiation of the alternating current.

[0012] Optionally, there are multiple dual-frequency radiating units, there are multiple first-frequency-band parasitic units and they are arranged corresponding to the multiple dual-frequency radiating units, and the second-frequency-band parasitic units include multiple and they are arranged corresponding to the multiple dual-frequency radiating units.

[0013] Optionally, the first frequency band parasitic unit is a butterfly structure.

[0014] Optionally, the butterfly structure includes two axially symmetrical trapezoidal structures, and the short sides of the two trapezoidal structures are connected through a diode.

[0015] According to another aspect of an embodiment of the present invention, a method for reconstructing a radiation pattern applied to any one of the above-mentioned antennas is provided, the method comprising: adjusting a plurality of diodes to be turned on or off through the control circuit so that a parasitic unit in the first frequency band or a parasitic unit in the second frequency band is in an operating state, so that the antenna forms a different radiation pattern.

[0016] According to another aspect of the present invention, there is provided a computer-readable storage medium, the computer-readable storage medium including a stored executable program, wherein when the executable program is run, the device where the computer-readable storage medium is located is controlled to execute any one of the above-mentioned antenna pattern reconstruction methods.

[0017] According to yet another aspect of the present invention, there is provided a communication device, comprising: the antenna of any one of the above items.

[0018] According to yet another aspect of the present invention, there is provided a computer program product, comprising a computer program, which implements the steps of any one of the above-mentioned antenna pattern reconstruction methods when the computer program is executed by a processor.

[0019] In an embodiment of the present invention, a dielectric substrate, a ground plate, a dual-frequency radiating unit, a feeding port, a first frequency band parasitic unit, a second frequency band parasitic unit, and a control circuit are provided, wherein the bottom of the dielectric substrate is connected to the ground plate, and the top of the dielectric substrate is provided with a dual-frequency radiating unit; the top of the ground plate is provided with a feeding port, and the feeding port is located at the center of the dual-frequency radiating unit; the first frequency band parasitic unit is provided on a side of the dual-frequency radiating unit away from the feeding port, the second frequency band parasitic unit is provided on any side of the dual-frequency radiating unit, and the first frequency band parasitic unit and the second frequency band parasitic unit are staggered, wherein the dual-frequency radiating unit, the first frequency band parasitic unit and the second frequency band parasitic unit are not collinear; the control circuit is used to control the first frequency band parasitic unit or the second frequency band parasitic unit to be in a working state, thereby achieving the purpose of staggering the parasitic units used in different frequency bands, thereby achieving the technical effect of making the parasitic units used in different frequency bands not affect each other, thereby solving the technical problem of poor communication effect of the antenna caused by the mutual influence of the parasitic units used in different frequency bands. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0021] Figure 1 is a top view of an optional antenna structure according to an embodiment of the present invention;

[0022] Figure 2 is a schematic diagram of an optional antenna structure according to an embodiment of the present invention;

[0023] Figure 3 is a top view of another antenna structure;

[0024] Figure 4 yes Figure 3 The two-dimensional radiation pattern of the antenna structure shown;

[0025] Figure 5 yes Figure 1 The two-dimensional radiation pattern of the antenna structure shown;

[0026] Figure 6 yes Figure 1 Output of the antenna radiation pattern in different modes.

[0027] The above drawings include the following reference numerals:

[0028] 1. Dielectric substrate; 2. Ground plate; 3. Dual-frequency radiating unit; 4. Feeding port; 5. First-band parasitic unit; 6. Second-band parasitic unit; 7. Diode; 8. Control circuit; 9. Matching branch; 10. Inductor; 11. Pad; 12. Floor. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme 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 are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] A dual-band reconfigurable antenna is an antenna with two different operating frequencies. It can switch between the two frequencies according to actual needs, which improves the adaptability and flexibility of the antenna. The general operating frequency band of a dual-band reconfigurable antenna is 2.4GHz and 5GHz. The radiation characteristics of the antenna can be changed by adjusting the on and off of the 2.4G parasitic unit and the 5G parasitic unit, thereby reconstructing the antenna radiation pattern to adapt to different communication requirements and environmental conditions. However, in actual applications, since the distance between the parasitic unit and the radiation unit is generally positively correlated with the operating wavelength, the 2.4G parasitic unit is often loaded on the outside of the 5G parasitic unit. At this time, there is a mutual influence between the 2.4G parasitic unit and the 5G parasitic unit. When the 2.4G parasitic unit is turned on, it will affect the radiation direction of the 5G frequency band, thereby affecting the communication effect of the antenna.

[0032] In order to solve the technical problem that the communication effect of the antenna is poor due to the mutual influence of parasitic units used in different frequency bands, according to one aspect of an embodiment of the present invention, an antenna is provided, such as Figure 1 to Figure 2As shown, the antenna includes: a dielectric substrate, a ground plane, a dual-frequency radiation unit, a feeding port, a first frequency band parasitic unit, a second frequency band parasitic unit, and a control circuit, wherein the bottom of the dielectric substrate is connected to the ground plane, and the top of the dielectric substrate is provided with a dual-frequency radiation unit; the top of the ground plane is provided with a feeding port, and the feeding port is located at the center of the dual-frequency radiation unit; the first frequency band parasitic unit is arranged on a side of the dual-frequency radiation unit away from the feeding port, the second frequency band parasitic unit is arranged on any side of the dual-frequency radiation unit, and the first frequency band parasitic unit and the second frequency band parasitic unit are staggered, wherein the dual-frequency radiation unit, the first frequency band parasitic unit and the second frequency band parasitic unit are not colinear; the control circuit is used to control the first frequency band parasitic unit or the second frequency band parasitic unit to be in a working state.

[0033] The antenna provided in the embodiment of the present invention is a dual-band horizontal polarization pattern reconfigurable antenna, and the dual-band can specifically be a 2.4G band and a 5G band (2.4-2.5GHz and 5.15-5.85GHz). The antenna may include a dual-band radiating unit, and the dual-band radiating unit may be a radiating unit with an "F structure". When designing a dual-band antenna, it is necessary to ensure that the antenna can work effectively at two different frequencies, which means that the size of the antenna must adapt to the two different wavelengths, and the F structure can be used to achieve good radiation performance at both frequencies. On this basis, the antenna may also include a parasitic unit of the first frequency band (5G band) and a parasitic unit of the second frequency band (2.4G band) to improve the communication performance of the corresponding frequency band. A diode and a control circuit corresponding to the diode can be set on each parasitic unit, which can control the on and off of the diode on each parasitic unit respectively, and control whether the parasitic unit is working, so as to achieve reconstruction of the directional pattern.

[0034] It should be noted that in the antenna provided by the embodiment of the present invention, the positions of the parasitic units of different frequency bands are staggered, and in the final structure, the dual-frequency radiating unit, the first frequency band parasitic unit, and the second frequency band parasitic unit are not collinear. Non-collinearity can be that the center points of the above three structures are not collinear, or any point of each of the above three structures is not collinear with all the points in the other two structures. The above setting can make the first frequency band parasitic unit and the second frequency band parasitic unit not affect each other, that is, when the working state of the first frequency band parasitic unit changes, the directional pattern of the antenna in the second frequency band will not change drastically. Similarly, when the working state of the second frequency band parasitic unit changes, the directional pattern of the antenna in the first frequency band will not change drastically, which can improve the communication performance of the antenna in the two frequency bands. The relative position of the first frequency band parasitic unit and the dual-frequency radiating unit can be specifically centered on the dual-frequency radiating unit, and in the Y direction of the two-dimensional plane (the feeding port and the straight line direction away from the feeding port), the first frequency band parasitic unit is arranged on one side of the dual-frequency radiating unit away from the feeding port. It should be noted that, in a two-dimensional plane, with the vertex of the upper left corner of the "F" structure of the dual-frequency radiating unit as the center, the Y direction can be the direction indicated by the vertical trunk in the "F" structure. The second frequency band parasitic unit can be located on one side of the dual-frequency radiating unit, as long as the dual-frequency radiating unit, the first frequency band parasitic unit and the second frequency band parasitic unit are not collinear.

[0035] Figure 1 and Figure 2 Only a circular dual-frequency radiating unit is used as an example to provide a specific design method of a circular antenna. In addition, the dual-frequency radiating unit can also be a zigzag shape or other shapes. When the dual-frequency radiating unit is circular, the misalignment setting of the first frequency band parasitic unit and the second frequency band parasitic unit can also be described as that the first frequency band parasitic unit and the second frequency band parasitic unit are not located on the same extension line outward from the center of the circle.

[0036] As an optional embodiment, the first frequency band parasitic unit is located on the extension line of the axis of the dual-frequency radiation unit, and the second frequency band parasitic unit is located on one side of the dual-frequency radiation unit.

[0037] Optionally, the staggered setting of the first-band parasitic unit and the second-band parasitic unit may be that in the X direction perpendicular to the Y direction, the first-band parasitic unit is set on the extension line of the axis of the dual-band radiating unit, and the second-band parasitic unit is set on one side of the dual-band radiating unit. That is, in the X direction, the positions of the first-band parasitic unit and the second-band parasitic unit are staggered by a certain distance, which may be half the length of the dual-band radiating unit. It should be noted that in a two-dimensional plane, with the vertex at the upper left corner of the "F" structure of the dual-band radiating unit as the center, the X direction may be the direction indicated by the long horizontal line located above in the "F" structure, and the Y direction may be the direction indicated by the vertical trunk in the "F" structure.

[0038] like Figure 1 As shown, if the antenna is a loop antenna, the first-band parasitic unit and the second-band parasitic unit are staggered, specifically, the ray from the feeding port pointing to the first-band parasitic unit and the ray from the feeding port pointing to the second-band parasitic unit do not overlap, and the angle between the two rays is as large as possible. It should be noted that the distance between the first-band parasitic unit and the second-band parasitic unit in the X direction is adjustable, and is set to half the length of the dual-band radiation unit, mainly because Figure 1 The combination of the dual-frequency radiation unit, the first-frequency-band parasitic unit and the second-frequency-band parasitic unit is arranged adjacent to each other. If the first-frequency-band parasitic unit is arranged on the other side opposite to the second-frequency-band parasitic unit, a part of the first-frequency-band parasitic unit will affect the second-frequency-band parasitic unit of the adjacent combination.

[0039] As an optional embodiment, the second frequency band parasitic unit is a rectangular structure, one end of the second frequency band parasitic unit is connected to the feeding port, and the other end points in a direction away from the feeding port.

[0040] Alternatively, if Figure 1 As shown, the specific structure of the second frequency band parasitic unit can be a rectangular structure, the short sides of the rectangle are two ends, one end is connected to the feeding port, and the other end points to the direction away from the feeding port. Combined with the dual-frequency radiation unit, the loop antenna can cover the 2.4G frequency band. The rectangular structure is a common antenna shape, which has the advantages of simple structure, easy manufacturing and integration, etc.

[0041] One end of the second-band parasitic element is connected to the feed port, which means it is directly or indirectly connected to the main signal transmission path of the antenna. The other end points away from the feed port, which indicates the layout and orientation of the parasitic element in the antenna. By pointing one end of the parasitic element away from the feed port, the directivity of the antenna can be adjusted to have stronger radiation capability in that direction.

[0042] As an optional embodiment, the dual-frequency radiation unit includes a radiator with a gradually varying size, wherein the radiator with a gradually varying size includes an end connected to the feeding port and an end away from the feeding port, and the size of the end is smaller than that of the end connected to the feeding port.

[0043] Optionally, when designing a dual-frequency radiating unit, a size gradient may be provided to improve input impedance matching. The size gradient may include a gradual decrease in the width of the radiator from an end connected to the feeding port to an end away from the feeding port. Figure 1 As shown, the dual-frequency radiation unit is roughly an "F structure", and the gradient design can be a long horizontal line located at the top of the "F", which gradually narrows from the node connected to the trunk to the end; it can also include a short horizontal line located at the bottom of the "F", which gradually narrows from the node connected to the trunk to the end; it can also include the trunk part located between the long horizontal line and the short horizontal line in the "F", which gradually narrows from the short horizontal line to the long horizontal line.

[0044] As an optional embodiment, the end of the dual-frequency radiation unit is connected to a matching branch, and the matching branch includes a rectangular radiator.

[0045] Optionally, when designing a dual-frequency radiating unit, in order to improve the adjustment flexibility of the 2.4G resonance frequency, a matching branch may be provided at the end of the dual-frequency radiating unit, such as Figure 1 As shown, the dual-frequency radiation unit is roughly an "F structure", and the matching branch can be a symmetrical rectangular radiator that is arranged at the end of the upper long horizontal line in the "F" and is perpendicular to the long horizontal line.

[0046] A dual-band radiating unit is an antenna component that can work simultaneously or separately in two different frequency bands. When designing this type of antenna, it is necessary to ensure that it has good performance in both target frequency bands, such as suitable resonant frequency, gain, directivity, etc. The resonant frequency is an important indicator of antenna performance, which determines at which frequency the antenna can most effectively radiate and receive electromagnetic waves. For dual-band radiating units, the resonant frequencies of the two frequency bands need to be adjusted and optimized separately. In order to increase the adjustment flexibility of the 2.4GHz resonant frequency, that is, to make it easier to change the position of this frequency through design adjustments, a matching branch can be set at the end of the radiating unit.

[0047] The matching branch is a structure used to improve antenna impedance matching, adjust the resonant frequency, and optimize antenna performance. The matching branch can be set at the end of the dual-frequency radiating unit, specifically at the end of the upper long horizontal line in the "F structure". The matching branch itself is a symmetrical rectangular radiator perpendicular to the long horizontal line. The symmetrical rectangular radiator can provide a relatively stable electromagnetic field distribution, which helps to improve the performance of the antenna. At the same time, parameters such as the shape, position and size of the matching branch can also be further optimized and adjusted according to specific application requirements.

[0048] As an optional embodiment, an inductor for reducing electromagnetic radiation of alternating current is provided on the control circuit.

[0049] Optionally, in order to control whether the parasitic unit is working by turning on and off the diode set on the parasitic unit, a control circuit needs to be set on the antenna, that is, there will be circuit routing on the dielectric substrate of the antenna. When an alternating current flows through the circuit, electromagnetic radiation is inevitably generated, which in turn affects the directional pattern radiated by the antenna. At this time, an inductor can be loaded on the control circuit to block the routing at high frequency and suppress the influence of the control line on the directional pattern when the antenna is working. It should be noted that in order to achieve better results, a large amount of inductance can be loaded on the control circuit.

[0050] As an optional embodiment, there are multiple dual-frequency radiating units, there are multiple first-frequency-band parasitic units and they are arranged corresponding to the multiple dual-frequency radiating units, and there are multiple second-frequency-band parasitic units and they are arranged corresponding to the multiple dual-frequency radiating units.

[0051] Optionally, the dual-frequency radiation unit may be multiple, and correspondingly, the first frequency band parasitic unit may be multiple, and the second frequency band parasitic unit may also be multiple, and the number of the three should be consistent and correspondingly arranged to form a group of antenna structures capable of realizing dual-frequency directional pattern reconfiguration. Specifically, Figure 1 As shown, the loop antenna includes three groups of such antenna structures, each group of antenna structures occupies one-third of the position of the loop antenna, the angle between every two first-band parasitic units can be 120°, and the angle between every two second-band parasitic units is also 120°. Of course, the size and number of antenna structures can be freely set as needed, and can also be set to include four groups of antenna structures, each group of antenna structures occupies one-quarter of the position of the loop antenna, the angle between every two first-band parasitic units can be 90°, and the angle between every two second-band parasitic units is also 90°.

[0052] As an optional embodiment, the first frequency band parasitic unit is a butterfly structure.

[0053] Optionally, in order to enable the effective bandwidth of the antenna to cover the entire 5G frequency band, this optional embodiment designs the structure of the first frequency band parasitic unit to be butterfly-shaped.

[0054] As an optional embodiment, the butterfly structure includes two axially symmetrical trapezoidal structures, the short sides of the two trapezoidal structures are connected, and the diode is arranged at the connection.

[0055] Alternatively, if Figure 1 As shown, the butterfly structure can be two axisymmetric trapezoidal structures. Of course, the butterfly structure can also be obtained by axisymmetrically performing other geometric structures.

[0056] As a specific embodiment, Figure 1 and Figure 2 The figure shows a schematic diagram of a specific dual-frequency horizontal polarization reconfigurable antenna, in which a loop antenna is used as a radiation unit. The antenna can cover the WiFi 2.4G & 5G frequency bands (2.4 ~ 2.5GHz & 5.15 ~ 5.85GHz), printed on a 0.8mm thick FR-4 dielectric board, the diameter of the antenna PCB board is 70mm, and two cross support boards are placed under it. The ground is 22mm below the horizontal polarization antenna, and the size is 100mm*100mm.

[0057] The antenna includes a dual-frequency ring radiating unit, three 2.4G parasitic units connected to the feed point, 5G butterfly parasitic units in three directions, and 6 PIN diodes and their corresponding control circuits and bias circuits. The antenna mainly realizes independent reconfiguration of the directional patterns in two frequency bands through the design of parasitic units at different positions. The PIN tube is loaded on the parasitic structure. The on-off control of the PIN tube controls whether the parasitic structure works to achieve the switching of the directional pattern, and tries to avoid the mutual influence of the parasitic units in the two frequency bands. The two ends of each PIN diode are connected to the control signal line and the ground line to form a complete loop. Figure 2 It includes the specific routing method of the control circuit. The routing can be transferred to the vertical support board through the pad and finally connected to the floor for control.

[0058] To improve the matching bandwidth of the antenna, such as Figure 1 As shown in the figure, the long crossbar, short crossbar and the main part connecting the long crossbar and the short crossbar in the "F structure" of the radiation unit can adopt a gradual design to improve the input impedance matching; matching branches can also be loaded at the end to improve the adjustment flexibility of the 2.4G resonant frequency. In addition, a butterfly-shaped parasitic unit is proposed, and the effective bandwidth can cover the entire 5G frequency band, so that the antenna can achieve reconfigurable radiation pattern within the 5G frequency band.

[0059] In summary, the antenna achieves the reconfiguration of the dual-frequency radiation pattern through three aspects. First, the open-circuit matching branches and gradient design are used in the design of the dual-frequency radiation unit to improve the antenna matching, so that the ring antenna structure covers the WiFi2.4G and 5G frequency bands; secondly, the parasitic structures of different frequency bands are placed in different positions to reduce the impact of the on and off of the 2.4G parasitic structure on the 5G radiation pattern, thereby achieving independent dual-frequency radiation pattern reconfiguration; finally, a large amount of inductance is loaded on the control circuit for high-frequency cutting of the routing, so as to suppress the influence of the control line radiation on the radiation pattern when the antenna is working.

[0060] In order to compare the effect of the staggered arrangement of the 2.4G and 5G parasitic units provided by the present invention on the directional pattern, a structure of the 2.4G and 5G parasitic units is designed to be consistent with the present invention, but the relative position is set so that the 2.4G and 5G parasitic units are located on the same ray starting from the feeding port, which is in line with the position design idea of ​​the parasitic unit in the related art. The specific structure is as follows: Figure 3 shown.

[0061] Figure 4 and Figure 5 The position design of the conventional parasitic unit and the directional diagram of the dual-band reconfigurable antenna with a staggered design provided by the present invention in the 5G frequency band are respectively given when the 2.4G parasitic unit is turned on and off. It can be seen that in the antenna designed according to the position of the conventional parasitic unit, when the 2.4G parasitic structure is turned on, the 2.4G directional diagram becomes directional and the 5G directional diagram also changes significantly. However, in the antenna with a staggered design provided by the present invention, the turning on and off of the 2.4G parasitic unit will hardly affect the directional diagram of the 5G frequency band.

[0062] Figure 6 The θ=45° plane 2.4G and 5G radiation patterns in the omnidirectional and directional modes realized by the staggered antenna provided by the present invention are given. Six directional mode radiation patterns can be radiated by the conduction of a single or two PIN diodes in the same frequency band. Mode0 represents the omnidirectional mode, and Mode1-6 represents the directional mode. It can be seen that the peak gains of the directional modes in the 2.4G and 5G frequency bands are respectively improved by 4.5dB and 2.2dB compared with the omnidirectional mode.

[0063] The antenna with staggered design provided by the present invention realizes the switching of directional pattern modes independently of each other in two frequency bands. In addition, the antenna can realize omnidirectional mode and 6 directional modes in dual frequency bands, which has more switchable beams than conventional smart antennas. Secondly, the directional mode of the antenna can significantly improve the peak gain and front-to-back ratio of the antenna, with a maximum gain of 4.5dBi, which is about 2dBi higher than conventional reconfigurable antennas. In high-density communication scenarios, it can directionally improve the communication rate and reduce interference between users. Finally, the antenna adopts a dual-frequency co-aperture design, which saves the number and area of ​​antennas and facilitates the miniaturization design of reconfigurable antennas.

[0064] According to an embodiment of the present invention, an embodiment of a method for reconstructing the directional pattern of any of the above-mentioned antennas is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0065] The method comprises: regulating the conduction or disconnection of a plurality of diodes through the control circuit so as to put the first frequency band parasitic unit or the second frequency band parasitic unit into working state and make the antenna form different radiation patterns.

[0066] The on-off of the diode disposed on the parasitic unit in the above antenna can be adjusted to control whether the parasitic unit is working to achieve reconstruction of the directional pattern. Specifically, when the diode is turned on, it allows current to flow, so that the corresponding parasitic unit is activated and participates in the work of the antenna. When the diode is disconnected, the corresponding parasitic unit does not participate in the work. This can be used to dynamically adjust signal transmission in a wireless communication system to adapt to changing environments or user needs.

[0067] As an optional embodiment, the execution subject of the method of this embodiment may be a terminal or a server for controlling antenna communication. For example, when applied to a terminal for controlling antenna communication, it can easily realize antenna pattern reconstruction in simple communication scenarios; for another example, when applied to a server, it can call on the server's rich computing resources to realize antenna pattern reconstruction in more complex communication scenarios.

[0068] It should be noted that the above-mentioned terminal can be of various types, for example, it can be a mobile terminal with certain computing capabilities, or it can be a fixed computer device with recognition capabilities, etc. The above-mentioned server can also be of various types, for example, it can be a local server or a virtual cloud server. The server can be a single computer device or a computer cluster in which multiple computer devices are integrated according to computing capabilities.

[0069] An embodiment of the present invention may provide a communication device, the communication device comprising any one of the antennas described above, and also comprising a controller applying the method for reconstructing the directional pattern of any one of the antennas described above. A person of ordinary skill in the art may understand that all or part of the steps in the various methods of the above embodiments may be completed by instructing the hardware related to the terminal device through a program, and the program may be stored in a non-volatile storage medium, and the storage medium may include: a flash disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0070] The embodiment of the present invention further provides a computer-readable storage medium. Optionally, in this embodiment, the computer-readable storage medium can be used to store the program code executed by the antenna pattern reconstruction method provided in the above embodiment.

[0071] An embodiment of the present invention further provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the antenna pattern reconstruction method in each embodiment of the present application.

[0072] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0073] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0074] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0075] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0076] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0077] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.

[0078] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An antenna, characterized in that: include: A dielectric substrate, a ground plane, a dual-frequency radiation unit, a feeding port, a first frequency band parasitic unit, a second frequency band parasitic unit, and a control circuit, wherein: The bottom of the dielectric substrate is connected to the ground plate, and the top of the dielectric substrate is provided with the dual-frequency radiation unit; A feeding port is provided on the top of the ground plate, and the feeding port is connected to the dual-frequency radiating unit and is used to feed power to the dual-frequency radiating unit; The first-band parasitic unit is arranged on a side of the dual-band radiating unit away from the feeding port, the second-band parasitic unit is arranged on any side of the dual-band radiating unit, and the first-band parasitic unit and the second-band parasitic unit are staggered, wherein the dual-band radiating unit, the first-band parasitic unit and the second-band parasitic unit are not collinear; The control circuit is used to control the first frequency band parasitic unit or the second frequency band parasitic unit to be in working state.

2. The antenna according to claim 1, characterized in that The first-band parasitic unit is located on an extension line of the axis of the dual-frequency radiation unit.

3. The antenna according to claim 1, characterized in that The second-frequency-band parasitic unit is a rectangular structure, one end of the second-frequency-band parasitic unit is connected to the feeding port, and the other end points in a direction away from the feeding port.

4. The antenna according to claim 1, characterized in that: The dual-frequency radiation unit includes a radiator with a gradually varying size, wherein the radiator with a gradually varying size includes an end connected to the feeding port and an end away from the feeding port, and the size of the end is smaller than that of the end connected to the feeding port.

5. The antenna according to claim 1, characterized in that The end of the dual-frequency radiation unit is connected to a matching branch, and the matching branch includes a rectangular radiator.

6. The antenna according to claim 1, characterized in that The control circuit is provided with an inductor for reducing electromagnetic radiation of alternating current.

7. The antenna according to claim 1, characterized in that: There are multiple dual-frequency radiation units, there are multiple first-frequency-band parasitic units and they are arranged corresponding to the multiple dual-frequency radiation units, and there are multiple second-frequency-band parasitic units and they are arranged corresponding to the multiple dual-frequency radiation units.

8. The antenna according to any one of claims 1 to 7, characterized in that: The first frequency band parasitic unit is a butterfly structure.

9. The antenna according to claim 8, characterized in that The butterfly structure includes two axially symmetrical trapezoidal structures, and the short sides of the two trapezoidal structures are connected by diodes.

10. A method for reconstructing the directional pattern of the antenna according to any one of claims 1 to 9, characterized in that: The method comprises: The control circuit is used to adjust the conduction or disconnection of multiple diodes, so that the first frequency band parasitic unit or the second frequency band parasitic unit is in a working state, so that the antenna forms different radiation patterns.

11. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored executable program, wherein when the executable program is run, the device where the computer-readable storage medium is located is controlled to execute the method for reconstructing the antenna pattern of claim 10.

12. A communication device, characterized in that: The invention comprises the antenna according to any one of claims 1 to 9.

13. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for reconstructing the directional pattern of the antenna according to claim 10 is implemented.

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