Multi-band antenna module and communication device

Abstract

The present application relates to a multi-band antenna module and a communication device, including a low-frequency antenna, a high-frequency antenna, and a coupling patch disposed on a reflector, wherein the coupling patch is disposed on a blank area of the reflector. In an embodiment of the present application, by arranging a coupling patch for generating a reverse induced current on the blank area of the reflector, the influence of the reverse induced current generated by the coupling patch on the high-frequency antenna can cancel out the influence of the induced current generated by the blank area of the reflector on the high-frequency antenna, thereby reducing the influence of the induced current of the reflector on the radiation pattern of the high-frequency antenna, which is beneficial to improving the network coverage of the multi-band antenna.

Description

Technical Field

[0001] The present application relates to the technical field of antennas, and particularly to a multi-band antenna module and a communication device. Background Art

[0002] With the development of mobile communication technology, communication networks of multiple systems of different operators are operating simultaneously, and the rooftop space resources are becoming increasingly tense. Multi-band antennas can save rooftop space resources. However, as the number of frequency bands increases, the size of the antenna becomes larger and larger, resulting in inconvenient installation and poor reliability. Therefore, the miniaturization of multi-band antennas has become a trend.

[0003] In order to reduce the size of the antenna, antennas of different frequency bands need to be placed with a common aperture, and the mutual coupling between the antennas is relatively strong, which is likely to cause pattern distortion. In addition, when the antennas are placed with a common aperture, the antenna reflector is relatively large for high-frequency antennas, and the induced current on the antenna reflector and the induced current on the low-frequency antenna will cause serious distortion of the pattern of the high-frequency antenna. Therefore, it will seriously affect the network coverage of the multi-band antenna. Summary of the Invention

[0004] Based on this, it is necessary to provide a multi-band antenna and a base station for solving the above technical problems.

[0005] In a first aspect, an embodiment of the present application provides a multi-band antenna module, including: a reflector, a low-frequency antenna, a high-frequency antenna, and a coupling patch;

[0006] The low-frequency antenna, the high-frequency antenna, and the coupling patch are all disposed on the reflector, and the coupling patch is disposed on the blank area of the reflector, where the blank area is the area of the reflector where no high-frequency antenna is disposed.

[0007] In one embodiment, the multi-band antenna module includes a plurality of patch columns, and each patch column includes a plurality of coupling patches.

[0008] In one embodiment, the coupling patches in two adjacent patch columns are arranged in an interleaved manner; or,

[0009] The coupling patches in two adjacent patch columns are arranged in parallel.

[0010] In one embodiment, the high-frequency antenna includes at least one high-frequency antenna column, the high-frequency antenna column includes a plurality of high-frequency antenna units, and at least one high-frequency antenna column includes an edge high-frequency antenna column, and the edge high-frequency antenna column is adjacent to the edge patch column in the plurality of patch columns;

[0011] The coupling patches in the edge patch column and the high-frequency antenna units in the edge high-frequency antenna column are arranged in an interleaved manner; or,

[0012] The coupling patches in the edge patch column are arranged in parallel with the high-frequency antenna units in the edge high-frequency antenna column.

[0013] In one embodiment, the shape of the coupling patch includes: quadrilateral, circular, polygonal or cross-shaped.

[0014] In one embodiment, when the shape of the coupling patch is quadrilateral, the side length of the coupling patch is greater than or equal to the first side length value and less than or equal to the second side length value, where the first side length value is the difference between one-fourth of the target wavelength corresponding to the center frequency point of the high-frequency antenna and a preset value, and the second side length value is the sum of one-fourth of the target wavelength and a preset value.

[0015] In one embodiment, the coupling patch is fixedly arranged on the reflector through a non-metallic support.

[0016] In one embodiment, the height of the coupling patch from the reflector is lower than the height of the high-frequency antenna from the reflector.

[0017] In one embodiment, an opening is provided in the area of the reflector below the coupling patch, and there is an intersection area between the projection area of the coupling patch on the reflector and the opening.

[0018] In a second aspect, an embodiment of the present application provides a communication device, which includes the multi-band antenna module in any one of the above first aspects.

[0019] The above multi-band antenna module and communication device include a low-frequency antenna, a high-frequency antenna and a coupling patch arranged on a reflector, wherein the coupling patch is arranged on the blank area of the reflector. In the embodiment of the present application, by arranging a coupling patch for generating a reverse induced current on the blank area of the reflector, the influence of the reverse induced current generated by the coupling patch on the high-frequency antenna can cancel out the influence of the induced current generated by the blank area of the reflector on the high-frequency antenna, so as to reduce the influence of the induced current of the reflector on the radiation pattern of the high-frequency antenna, which is beneficial to improving the network coverage of the multi-band antenna. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of a multi-band antenna module in an embodiment of the present application;

[0022] Figure 2 Schematic diagram of the arrangement of two adjacent patch columns provided by the embodiment of the present application Figure 1 ;

[0023] Figure 3 Schematic diagram of the arrangement of two adjacent patch columns provided by the embodiment of the present application Figure 2 ;

[0024] Figure 4 Top view structural schematic diagram of a multi - band antenna module in another embodiment of the present application;

[0025] Figure 5 Side view structural schematic diagram of a multi - band antenna module in another embodiment of the present application;

[0026] Figure 6 Schematic diagram of the high - frequency induced current distribution of the reflector in a multi - band antenna of the traditional technology;

[0027] Figure 7 Schematic diagram of the high - frequency induced current distribution of the reflector in the multi - band antenna module of the embodiment of the present application;

[0028] Figure 8 Schematic diagram of the comparison of the radiation patterns of the first high - frequency antenna column between the multi - band antenna module of the embodiment of the present application and the multi - band antenna in the traditional technology;

[0029] Figure 9 Schematic diagram of the comparison of the radiation patterns of the second high - frequency antenna column between the multi - band antenna module of the embodiment of the present application and the multi - band antenna in the traditional technology;

[0030] Figure 10 Top view structural schematic diagram of a multi - band antenna module in another embodiment of the present application;

[0031] Figure 11 Side view structural schematic diagram of a multi - band antenna module in another embodiment of the present application;

[0032] Figure 12 Three - dimensional structural schematic diagram of the reflector and the coupling patch provided by the embodiment of the present application. Detailed implementation manners

[0033] To make the above - mentioned objects, features and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application in conjunction with the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0034] The serial numbers assigned to components in this document itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning.

[0035] For ease of understanding, some terms will be introduced first in the embodiments of this application.

[0036] The radiation pattern (or antenna radiation pattern) involved in the embodiments of this application refers to the graph of the relative field strength (normalized modulus) of the radiation field varying with direction at a certain distance from the antenna, usually represented by two mutually perpendicular planar radiation patterns in the direction of the maximum radiation direction of the antenna. Among them, the antenna radiation pattern can be divided into a horizontal plane radiation pattern and a vertical plane radiation pattern.

[0037] With the development of mobile communication technology, communication networks of multiple systems of different operators operate simultaneously, and the rooftop space resources are becoming increasingly tense. Multi-band antennas can save rooftop space resources and reduce the cost of building base stations. However, as the number of frequency bands increases, the size of the antenna becomes larger and larger, resulting in inconvenient installation and poor reliability. Therefore, the miniaturization of multi-band antennas has become a trend.

[0038] In order to reduce the size of the antenna, antennas of different frequency bands need to be placed with a common aperture, and the mutual coupling between the antennas is relatively strong, which is likely to cause radiation pattern distortion. In addition, when the antennas are placed with a common aperture, the antenna reflector is relatively large for high-frequency antennas, and the induced current on the antenna reflector and the induced current on the low-frequency antenna will cause serious distortion of the radiation pattern of the high-frequency antenna.

[0039] In traditional technologies, in order to improve the radiation pattern of high-frequency antennas, methods such as using filter antennas or transparent antennas are adopted to reduce the influence between low-frequency antennas and high-frequency antennas. However, there is still a problem that the induced current on the antenna reflector causes serious distortion of the radiation pattern of the high-frequency antenna. Therefore, it will still affect the network coverage of multi-band antennas.

[0040] The applicant's research finds that when the high-frequency antenna is working, mainly because a relatively large induced current is generated in the blank area of the antenna reflector, which causes serious distortion of the radiation pattern of the high-frequency antenna. In order to reduce the induced current generated in the blank area of the antenna reflector, by setting a coupling patch for generating a reverse induced current in the blank area of the antenna reflector, the influence of the reverse induced current generated by the coupling patch on the high-frequency antenna can cancel out the influence of the induced current generated in the blank area of the antenna reflector on the high-frequency antenna, so as to solve the problem in traditional technologies that the radiation pattern of the high-frequency antenna is seriously distorted due to the induced current on the antenna reflector, resulting in the influence on the network coverage of multi-band antennas.

[0041] The communication devices involved in the embodiments of the present application may include, but are not limited to: base stations, transmission reception points (TRPs). Among them, a base station: also known as a radio access network (RAN) device, is a device that connects a terminal to a wireless network. It can be a base transceiver station (BTS) in a global system of mobile communication (GSM) or code division multiple access (CDMA), or a node B (NB) in wideband code division multiple access (WCDMA), or an evolved base station (eNB or eNodeB) in long term evolution (LTE), or a relay station or an access point, or a base station (gNodeB, gNB) in a 5G network, etc., which is not limited herein.

[0042] Figure 1 FIG. is a schematic structural diagram of a multi-band antenna module in an embodiment of the present application, as Figure 1 shown, the multi-band antenna module of the embodiment of the present application may include: a reflector 10, a low-frequency antenna 11, a high-frequency antenna 12, and a coupling patch 13. Among them, the low-frequency antenna 11, the high-frequency antenna 12, and the coupling patch 13 are all disposed on the reflector 10, and the coupling patch 13 is disposed on the blank area of the reflector, where the blank area is the area of the reflector 10 where the high-frequency antenna 12 is not disposed. It should be noted that there is a certain distance between any coupling patch 13 and the reflector 10 in the embodiment of the present application, so that the coupling patch 13 can form a coupling structure with the corresponding reflector area.

[0043] Exemplarily, the low-frequency antenna 11 in the embodiment of the present application may include two low-frequency antenna columns arranged along the antenna direction, and each low-frequency antenna column may include a plurality of low-frequency antenna units; of course, the low-frequency antenna 11 may also include more than two low-frequency antenna columns, which is not limited in the embodiment of the present application.

[0044] Exemplarily, the high-frequency antenna 12 in the embodiment of the present application may include at least one high-frequency antenna column arranged along the antenna direction, and each high-frequency antenna column may include a plurality of high-frequency antenna units, where at least one high-frequency antenna column may be disposed between two low-frequency antenna columns.

[0045] Exemplarily, a plurality of coupling patches 13 may be arranged at intervals on the blank area of the reflector 10 in the embodiments of the present application. Among them, each coupling patch 13 and the corresponding reflector area form a coupling structure. When the high-frequency antenna 12 is operating, the direction of the first induced current generated by the coupling patch 13 is opposite to the direction of the second induced current generated by the corresponding reflector area. Therefore, the influence of the first induced current generated by the coupling patch 13 on the high-frequency antenna 12 can cancel out the influence of the second induced current generated by the reflector area on the high-frequency antenna 12. At the same time, the coupling patch 13 can also change the direction of the induced current generated in the adjacent area of the reflector area corresponding to the coupling patch 13 in the reflector 10. In summary, by arranging the coupling patch 13 for generating a reverse induced current on the blank area of the reflector 10, the influence of the reverse induced current generated by the coupling patch on the high-frequency antenna can cancel out the influence of the induced current generated by the blank area of the reflector on the high-frequency antenna, which is equivalent to weakening the induced current generated by the blank area of the reflector, thereby solving the problem in the prior art that the pattern of the high-frequency antenna is severely distorted due to the induced current on the antenna reflector, resulting in the influence on the network coverage of the multi-band antenna.

[0046] The above multi-band antenna module includes: a low-frequency antenna, a high-frequency antenna, and coupling patches arranged on a reflector, wherein the coupling patches are arranged on the blank area of the reflector. In the embodiments of the present application, by arranging the coupling patches for generating reverse induced current on the blank area of the reflector, the influence of the reverse induced current generated by the coupling patches on the high-frequency antenna can cancel out the influence of the induced current generated by the blank area of the reflector on the high-frequency antenna, thereby reducing the influence of the induced current of the reflector on the pattern of the high-frequency antenna and being beneficial to improving the network coverage of the multi-band antenna. In addition, the structure of the multi-band antenna module in the embodiments of the present application is simple, which is not only easy to implement but also has a low cost.

[0047] In one embodiment, on the basis of the above embodiment, the embodiments of the present application further introduce the relevant content of the above coupling patches. The multi-band antenna module in the embodiments of the present application may include a plurality of patch columns arranged along the antenna direction, and each patch column may include a plurality of coupling patches 13. Among them, each coupling patch 13 may be fixedly arranged on the reflector 10 through a non-metallic support (such as a plastic support); of course, each coupling patch 13 may also be fixedly arranged on the reflector 10 in other ways, and the embodiments of the present application do not limit this.

[0048] Exemplarily, the shapes of the coupling patches 13 in the embodiments of the present application may include, but are not limited to: quadrilateral, circular, polygonal or cross-shaped. Among them, when the shape of the coupling patch 13 is quadrilateral, the side length of the coupling patch 13 may be greater than or equal to the first side length value and less than or equal to the second side length value. The first side length value may be the difference between one-fourth of the target wavelength corresponding to the center frequency point of the high-frequency antenna 12 and a preset value, and the second side length value may be the sum of one-fourth of the target wavelength and a preset value.

[0049] Figure 2 Schematic diagram of the arrangement of two adjacent patch columns provided by the embodiments of the present application Figure 1 , such as Figure 2 shown, the coupling patches 13 in two adjacent patch columns of the embodiments of the present application are arranged staggered with each other, so as to uniformly weaken the influence of the induced current generated in the blank area of the reflector on the high-frequency antenna.

[0050] Figure 3 Schematic diagram of the arrangement of two adjacent patch columns provided by the embodiments of the present application Figure 2 , such as Figure 3 shown, the coupling patches 13 in two adjacent patch columns of the embodiments of the present application are arranged in parallel. This can not only weaken the influence of the induced current generated in the blank area of the reflector on the high-frequency antenna, but also facilitate the installation of the multi-band antenna module, which is beneficial to improving the installation efficiency of the multi-band antenna module.

[0051] Of course, the multiple patch columns in the embodiments of the present application may also be arranged in other ways, and the embodiments of the present application do not limit this.

[0052] In one embodiment, on the basis of the above embodiment, the embodiments of the present application further introduce the relevant content of the above high-frequency antenna 12.

[0053] The high-frequency antenna 12 in the embodiments of the present application may include at least one high-frequency antenna column, and each high-frequency antenna column may include a plurality of high-frequency antenna units. Among them, at least one high-frequency antenna column may include an edge high-frequency antenna column, and the edge high-frequency antenna column is adjacent to the edge patch column among the multiple patch columns. It should be understood that the edge high-frequency antenna column is the high-frequency antenna array adjacent to the patch column among at least one high-frequency antenna column, and the edge patch column is the patch column adjacent to the high-frequency antenna column among the multiple patch columns.

[0054] Exemplarily, the coupling patches in the edge patch column and the high-frequency antenna units in the edge high-frequency antenna column may be arranged staggered with each other; or, the coupling patches in the edge patch column and the high-frequency antenna units in the edge high-frequency antenna column may be arranged in parallel.

[0055] For ease of understanding, in the following embodiments of the present application, it is taken as an example that the low-frequency antenna 11 includes two low-frequency antenna arrays arranged along the antenna direction, the high-frequency antenna 12 includes four high-frequency antenna arrays arranged along the antenna direction, and four patch arrays are arranged along the antenna direction to introduce the multi-band antenna module of the embodiments of the present application. It should be noted that the number of low-frequency antenna arrays, high-frequency antenna arrays, and patch arrays in the embodiments of the present application is not limited, and the specific number can be set according to different application scenarios of the multi-band antenna module.

[0056] Figure 4 FIG. [4] is a top view structural schematic diagram of a multi-band antenna module in another embodiment of the present application. Figure 5 FIG. [6] is a side view structural schematic diagram of a multi-band antenna module in another embodiment of the present application. As Figure 4 shown, each low-frequency antenna array may include a plurality of low-frequency antenna units 11U, each high-frequency antenna array may include a plurality of high-frequency antenna units 12U, four high-frequency antenna arrays are arranged in the middle area of the reflector 10, and two patch arrays are respectively arranged in the blank areas on both sides of the reflector 10, and each patch array includes a plurality of coupling patches 13.

[0057] It should be understood that in order to reduce the influence of the low-frequency antenna unit on the high-frequency antenna, the low-frequency antenna unit 11U2 in the embodiments of the present application may be a wave-transmitting antenna unit, and the low-frequency antenna unit 11U1 may be a conventional antenna unit. It should be noted that in the embodiments of the present application, low-frequency antenna units or other frequency band antennas may also be added in the antenna direction (such as the left arrow direction shown in Figure 4 ).

[0058] In the embodiments of the present application, the coupling patches 13 in the edge patch arrays of the plurality of patch arrays and the high-frequency antenna units 12U in the edge high-frequency antenna arrays of the plurality of high-frequency antenna arrays may be arranged in an interleaved manner.

[0059] Exemplarily, the patch arrays adjacent to the edge patch arrays among the plurality of patch arrays may be arranged in an interleaved manner with the edge patch arrays (as shown in Figure 4 ), or the patch arrays adjacent to the edge patch arrays among the plurality of patch arrays may be arranged in parallel with the edge patch arrays (not shown in Figure 4 ).

[0060] As Figure 5 shown, the height of any coupling patch 13 from the reflector 10 in the embodiments of the present application may be lower than the height of the high-frequency antenna 12 from the reflector, so that each coupling patch 13 can respectively form a coupling structure with the corresponding reflector area. Exemplarily, the height of any coupling patch 13 from the reflector 10 may be less than one-eighth of the target wavelength. For example, the height of any coupling patch 13 from the reflector 10 may be equal to one-twentieth of the target wavelength.

[0061] Note: In the above translation, the numbers in square brackets (e.g., [4], [6]) are the numbers corresponding to the figure numbers in the original text. Since the original text doesn't clearly define what these numbers represent in terms of figure numbers, this is a placeholder translation method. If there is more specific information about these figure numbers in the original context, the translation can be adjusted accordingly.Figure 6 It is a schematic diagram of the high-frequency induced current distribution of the reflector in the multi-band antenna of the traditional technology. As Figure 6 shown, in the traditional technology, a relatively large induced current will be generated in the blank area of the reflector in the multi-band antenna, which will cause serious distortion of the radiation pattern of the high-frequency antenna.

[0062] Figure 7 It is a schematic diagram of the high-frequency induced current distribution of the reflector in the multi-band antenna module of the embodiment of the present application. Combining Figure 6 and Figure 7 shown, in the embodiment of the present application, a plurality of patch columns each including a plurality of coupling patches 13 are arranged on the blank area of the reflector 10. Among them, each coupling patch 13 and the corresponding reflector area form a coupling structure, so that when the high-frequency antenna is working, the direction of the first induced current generated by the coupling patch 13 is opposite to the direction of the second induced current generated by the corresponding reflector area. Therefore, the influence of the first induced current generated by the coupling patch 13 on the high-frequency antenna can cancel out the influence of the second induced current generated by the reflector area on the high-frequency antenna. At the same time, the coupling patch 13 can also change the direction of the induced current generated in the adjacent area of the reflector area corresponding to the coupling patch 13 in the reflector 10, weakening the induced current generated in the blank area of the reflector, thereby reducing the influence of the induced current of the reflector on the radiation pattern of the high-frequency antenna, which is beneficial to improving the network coverage of the multi-band antenna.

[0063] Figure 8 It is a comparative schematic diagram of the radiation patterns of the first high-frequency antenna column of the multi-band antenna module of the embodiment of the present application and the multi-band antenna in the traditional technology. Figure 9 It is a comparative schematic diagram of the radiation patterns of the second high-frequency antenna column of the multi-band antenna module of the embodiment of the present application and the multi-band antenna in the traditional technology. As Figure 8 and Figure 9 shown, there are varying degrees of distortion in the radiation patterns of the first and second high-frequency antenna columns of the multi-band antenna in the traditional technology. Among them, the horizontal plane beam widths are 54.9° and 76.9° respectively, both of which do not meet the requirements of conventional base station antennas.

[0064] As Figure 8 and Figure 9As shown, the distortion phenomena of the radiation patterns of the first high-frequency antenna array and the second high-frequency antenna array provided in the embodiment of the present application are significantly improved. Among them, the horizontal beam widths are 65.5° and 69.6° respectively, both meeting the requirement of the horizontal beam width of 65±6° for conventional base station antennas. At the same time, the front-to-back ratio of the radiation patterns of the first high-frequency antenna array and the second high-frequency antenna array is also improved. It can be seen that in the embodiment of the present application, by setting coupling patches for generating reverse induced current in the blank area of the antenna reflector, the improvement of the radiation pattern performance of the high-frequency antenna is very obvious.

[0065] In one embodiment, on the basis of the above embodiment, Figure 10 is a top view structural schematic diagram of a multi-band antenna module in another embodiment of the present application. As Figure 10 shown, different from the multi-band antenna module shown above Figure 4 in the embodiment of the present application, the coupling patches 13 in the edge patch arrays of the multiple patch arrays and the high-frequency antenna units 12U in the edge high-frequency antenna arrays of the multiple high-frequency antenna arrays can be arranged in parallel.

[0066] Exemplarily, the patch arrays adjacent to the edge patch arrays among the multiple patch arrays can be arranged in parallel with the edge patch arrays (as Figure 10 shown), or the patch arrays adjacent to the edge patch arrays among the multiple patch arrays can be arranged in an interleaved manner with the edge patch arrays (not shown in Figure 10 ).

[0067] In the embodiment of the present application, by setting multiple patch arrays each including multiple coupling patches 13 on the blank area of the reflector 10, where each coupling patch 13 and the corresponding reflector area form a coupling structure, so that when the high-frequency antenna 12 operates, the direction of the first induced current generated by the coupling patch 13 is opposite to the direction of the second induced current generated by the corresponding reflector area. Therefore, the influence of the first induced current generated by the coupling patch 13 on the high-frequency antenna can cancel out the influence of the second induced current generated by the reflector area on the high-frequency antenna. At the same time, the coupling patch 13 can also change the direction of the induced current generated in the adjacent area of the reflector area corresponding to the coupling patch 13 in the reflector 10, weakening the induced current generated in the blank area of the reflector, thereby reducing the influence of the induced current of the reflector on the radiation pattern of the high-frequency antenna, which is beneficial to improving the network coverage of the multi-band antenna.

[0068] It should be noted that the shape, quantity, and / or setting method of the coupling patches in the embodiment of the present application can be set according to different application scenarios of the multi-band antenna module.

[0069] In one embodiment, based on the above embodiment, when the high-frequency induction current on the reflector is relatively strong, an opening may be additionally provided in the area below the coupling patch 13 in the reflector 10 in the embodiment of the present application. Exemplarily, the shape of each opening in the embodiment of the present application may include, but is not limited to: quadrilateral, circular, polygonal or cross-shaped.

[0070] Figure 11 FIG. 4 is a schematic side view structure diagram of a multi-band antenna module in another embodiment of the present application. Figure 12 FIG. 5 is a schematic three-dimensional structure diagram of a reflector and a coupling patch provided in an embodiment of the present application. As Figure 11 and Figure 12 shown, an opening 14 may be provided in the area below the coupling patch 13 in the reflector 10 in the embodiment of the present application. Among them, there may be an intersection area between the projection area of the coupling patch 13 on the reflector 10 and the opening 14, so as to further weaken the induction current on the reflector 10 and change the direction of the induction current on the reflector 10, thereby effectively improving the pattern performance of the high-frequency antenna.

[0071] In one embodiment, the embodiment of the present application further provides a communication device, and the communication device may include the multi-band antenna module provided in the above embodiment of the present application. Among them, the structure of the multi-band antenna module may refer to the relevant content about the multi-band antenna module in the above embodiment of the present application, and its implementation principle and technical effect are similar, which will not be elaborated here.

[0072] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0073] The above-described embodiments only represent several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several deformations and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A multi-band antenna module, characterized in that, Comprising: A reflector, a low-frequency antenna, a high-frequency antenna, and a coupling patch; The low-frequency antenna, the high-frequency antenna, and the coupling patch are all disposed on the reflector, and the coupling patch is fixedly disposed on the blank area of the reflector through a non-metallic support, wherein the blank area is the area of the reflector where the high-frequency antenna is not disposed; Wherein, the coupling patch and the corresponding reflector area in the reflector form a coupling structure, so that when the high-frequency antenna is operating, the direction of the first induced current generated by the coupling patch is opposite to the direction of the second induced current generated by the corresponding reflector area.

2. The multi-band antenna module according to claim 1, wherein The multi-band antenna module includes a plurality of patch columns, and each of the patch columns includes a plurality of the coupling patches.

3. The multi-band antenna module according to claim 2, wherein The coupling patches in two adjacent patch columns are arranged in an interleaved manner; or, The coupling patches in two adjacent patch columns are arranged in parallel.

4. The multi-band antenna module according to claim 3, characterized in that, The high-frequency antenna includes at least one high-frequency antenna column, the high-frequency antenna column includes a plurality of high-frequency antenna units, the at least one high-frequency antenna column includes an edge high-frequency antenna column, and the edge high-frequency antenna column is adjacent to the edge patch column in the plurality of patch columns; The coupling patches in the edge patch column and the high-frequency antenna units in the edge high-frequency antenna column are arranged in an interleaved manner; or, The coupling patches in the edge patch column and the high-frequency antenna units in the edge high-frequency antenna column are arranged in parallel.

5. The multi-band antenna module according to any one of claims 1-4, characterized in that, The shape of the coupling patch includes: quadrilateral, circular, polygonal or cross-shaped.

6. The multi-band antenna module according to claim 5, wherein When the shape of the coupling patch is quadrilateral, the side length of the coupling patch is greater than or equal to a first side length value and less than or equal to a second side length value, wherein the first side length value is the difference between one-fourth of the target wavelength corresponding to the center frequency point of the high-frequency antenna and a preset value, and the second side length value is the sum of one-fourth of the target wavelength and the preset value.

7. The multi-band antenna module according to any one of claims 1-4, characterized in that, The height of the coupling patch from the reflector is lower than the height of the high-frequency antenna from the reflector.

8. The multi-band antenna module according to claim 7, wherein The height of the coupling patch from the reflector is less than one-eighth of the target wavelength.

9. The multi-band antenna module according to any one of claims 1-4, characterized in that, An opening is provided in the area below the coupling patch in the reflector, wherein there is an intersection area between the projection area of the coupling patch on the reflector and the opening.

10. A communication device, characterized in that, The communication device includes the multi-band antenna module according to any one of claims 1-9.

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