Base station antenna

Abstract

The invention relates to the technical field of communication, and provides a base station antenna. The base station antenna comprises a reflecting plate, a cover plate, a feed network and a radiation unit, the reflecting plate is provided with a first surface and a second surface which are opposite to each other, and the reflecting plate is provided with a through hole penetrating through the first surface and the second surface of the reflecting plate; the cover plate is arranged on the second surface of the reflecting plate and is electrically connected with the reflecting plate, and an accommodating cavity is formed between the cover plate and the reflecting plate; the feed network is arranged in the accommodating cavity; the radiation unit is arranged on the first surface of the reflection plate, the radiation unit is provided with a feed piece, and the feed piece penetrates through the through hole to be electrically connected with the feed network. According to the base station antenna provided by the invention, only one cover plate is adopted, so that the cover plate and the reflecting plate jointly form the accommodating cavity, and the cover plate and the reflecting plate are more convenient to assemble; the feed network is arranged in the accommodating cavity from the back surface of the reflecting plate, and the back surface of the reflecting plate has enough space for the feed network to be arranged in the accommodating cavity, so that the feed network is more convenient to assemble.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a base station antenna. Background Art

[0002] In current base station antennas, coaxial cables are usually used to connect the radiating unit and the feeding network to achieve feeding. Because there are many connecting cables, wiring is required during production, and there are many solder joints. In addition, the loss of the connecting cables themselves will affect the efficiency of the antenna. In addition, current base station antennas mostly use profile cavities, and the surface of the cavity must be electroplated to facilitate cable welding, and electroplating will cause environmental pollution.

[0003] In order to solve the above technical problems existing in the use of cables, the related art proposes to use two sheet metals to splice with the front of the reflector to form a cavity, the opening of the cavity faces the radiation unit, and the feeding network is arranged in the cavity and coupled with the radiation unit to achieve a cable-free connection. However, the large number of sheet metals required for this structure makes it inconvenient to splice the sheet metal and the reflector, and the space on the front of the reflector for the feeding network to be installed in the cavity is small, which makes it inconvenient to assemble the feeding network. Summary of the invention

[0004] In order to solve the above technical problem or at least partially solve the above technical problem, the present application provides a base station antenna.

[0005] The present application provides a base station antenna, comprising:

[0006] A reflective plate having a first surface and a second surface opposite to each other, wherein the reflective plate is provided with a first through hole penetrating the first surface and the second surface of the reflective plate;

[0007] A cover plate, disposed on the second surface of the reflector and electrically connected to the reflector, wherein a receiving cavity is formed between the cover plate and the reflector;

[0008] A feeding network is arranged in the accommodating cavity;

[0009] A radiation unit is arranged on the first surface of the reflection plate, and the radiation unit has a feeding plate, and the feeding plate passes through the first through hole and is electrically connected to the feeding network.

[0010] Optionally, the cover plate is extended along the first direction, and two opposite sides of the cover plate respectively form side openings communicating with the accommodating cavity between the two opposite sides of the cover plate and the reflecting plate;

[0011] And / or, the cover plate is extended along the first direction, and two opposite ends of the cover plate respectively form end openings communicating with the accommodating cavity between the two opposite ends of the cover plate and the reflecting plate.

[0012] Optionally, each of the radiation units has two feeding plates;

[0013] The feeding network includes two feeding parts, one of the two feeding parts is provided with an output port corresponding one-to-one to one of the feeding plates of each of the radiating units, and the other of the two feeding parts is provided with an output port corresponding one-to-one to the other feeding plate of each of the radiating units, and each feeding plate is electrically connected to the corresponding output port.

[0014] Optionally, the cover plate is a T-shaped plate, and the cover plate comprises a cover plate body and a connecting plate connected to the cover plate body at an angle;

[0015] The connecting plate is connected to a side of the cover plate body facing the reflecting plate and is electrically connected to the reflecting plate. The accommodating cavity is formed between the cover plate body and the reflecting plate. The connecting plate divides the accommodating cavity into two sub-cavities.

[0016] Optionally, the feeding network comprises two feeding parts, the two feeding parts are respectively located in the two sub-cavities, and each feeding part is provided with an output port;

[0017] Each of the radiation units has two feeding plates, and the two feeding plates of each of the radiation units are electrically connected to the output ports provided at two feeding parts respectively in a one-to-one correspondence.

[0018] Optionally, the connecting plate is connected to the reflecting plate by welding or coupling;

[0019] And / or, a second through hole corresponding to the output port of the feed network is provided on the cover plate body, so that a welding point between the feed sheet and the feed network is exposed through the second through hole for welding operation.

[0020] Optionally, the cover plate and the reflective plate are integrally formed by extrusion.

[0021] Optionally, the cover plate is a cross-shaped bent plate, comprising a first cover plate portion, two connecting plate portions and two second cover plate portions, the two connecting plate portions are respectively connected to two opposite sides of the first cover plate portion at an angle, and the two second cover plate portions are respectively connected to the two connecting plate portions at an angle and extend in a direction away from each other relative to the first cover plate portion;

[0022] The first cover plate portion protrudes toward the reflector relative to the two second cover plate portions and is electrically connected to the reflector. The accommodating cavity is formed between the two second cover plate portions and the reflector. The two connecting plate portions divide the accommodating cavity into two sub-cavities.

[0023] Optionally, the feeding network comprises two feeding parts, the two feeding parts are respectively located in the two sub-cavities, and each feeding part is provided with an output port;

[0024] Each of the radiation units has two feeding plates, and the two feeding plates of each of the radiation units are electrically connected to the output ports provided at two feeding parts respectively in a one-to-one correspondence.

[0025] Optionally, the first cover plate portion is electrically connected to the reflector plate by screws, rivets, welding or coupling;

[0026] Among them, when the first cover part is electrically connected to the reflector plate screw, the feed sheet is electrically connected to the feed network before the first cover part is electrically connected to the reflector plate screw, or the first cover part is electrically connected to the reflector plate screw before the feed sheet is electrically connected to the feed network.

[0027] Optionally, at least one of the first cover plate portion and the connecting plate portion is provided with an avoidance notch corresponding to the feeding sheet;

[0028] Alternatively, the power feeding plate is arranged away from the first cover portion and the connecting plate portion.

[0029] Optionally, the feed network is installed in the accommodating cavity through a structural member, and the height position of the feed network is in the middle of the accommodating cavity.

[0030] Optionally, the feeding network includes a strip line, a first medium and a second medium, wherein the first medium and the second medium are arranged on both sides of the strip line and are slidably connected to the strip line.

[0031] Compared with the prior art, the technical solution provided by the embodiments of the present application has the following advantages:

[0032] The base station antenna provided by the present application is provided with a cover plate on the second surface (or the back side) of the reflector, the cover plate is electrically connected to the reflector, and a receiving cavity is formed between the cover plate and the reflector, a feeding network is provided in the receiving cavity, and the feeding network and the reflector are grounded together, and the cover plate does not need to be electroplated, thereby avoiding environmental pollution; a radiation unit is provided on the first surface (or the front side) of the reflector, and a feeding plate of the radiation unit passes through a first through hole on the reflector and is electrically connected to the feeding network on the back side to achieve feeding, without using cables, thereby solving the problems of needing wiring during production due to cable connection, having a large number of solder joints, and the loss of the cable itself affecting the efficiency of the antenna; and only one cover plate is used to form a receiving cavity between the cover plate and the reflector, so that the assembly of the cover plate and the reflector is more convenient; and the feeding network is loaded into the receiving cavity from the back side of the reflector, and since the radiation unit is provided on the front side of the reflector, there is enough space on the back side of the reflector for the feeding network to be loaded into the receiving cavity, thereby making the assembly of the feeding network more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0034] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] Figure 1 This is a schematic diagram of the side view structure of a base station antenna according to an embodiment of the present application;

[0036] Figure 2 This is a schematic diagram of the three-dimensional structure of the front side of the base station antenna according to an embodiment of the present application;

[0037] Figure 3 for Figure 2 The three-dimensional structural schematic diagram of the base station antenna without the reflector;

[0038] Figure 4 for Figure 3 A partial enlarged structural diagram of the middle A part;

[0039] Figure 5 This is a schematic diagram of the three-dimensional structure of the back side of the base station antenna according to an embodiment of the present application;

[0040] Figure 6 for Figure 5 The three-dimensional structural schematic diagram of the base station antenna without the reflector;

[0041] Figure 7 This is a schematic diagram of the connection between the radiation unit and the feeding network according to an embodiment of the present application;

[0042] Figure 8 This is a schematic diagram of the bottom-up structure of a base station antenna according to an embodiment of the present application;

[0043] Fig. 9 for Figure 8 The schematic diagram of the structure of the base station antenna shown in the figure is a bottom-up view without the reflector;

[0044] Fig.10 This is a schematic diagram of a top view of the structure of a base station antenna according to an embodiment of the present application;

[0045] Fig.11 for Fig.10 The schematic diagram of the top view of the base station antenna without the reflector;

[0046] Fig.12 This is a schematic diagram of the side view structure of a base station antenna according to an embodiment of the present application;

[0047] Fig.13 This is a schematic diagram of the three-dimensional structure of the front side of a base station antenna according to another embodiment of the present application;

[0048] Fig.14 for Fig.13 The three-dimensional structural schematic diagram of the base station antenna without the reflector;

[0049] Fig.15 for Fig.14 A partial enlarged structural diagram of the middle A part;

[0050] Fig.16 This is a schematic diagram of the three-dimensional structure of the back side of a base station antenna according to another embodiment of the present application;

[0051] Fig.17 for Fig.16 The three-dimensional structural schematic diagram of the base station antenna without the reflector;

[0052] Fig.18 This is a schematic diagram of the connection between the radiation unit and the feeding network according to another embodiment of the present application;

[0053] Fig.19 This is a schematic diagram of the bottom-up structure of a base station antenna according to another embodiment of the present application;

[0054] Fig. 20 for Fig.19 The schematic diagram of the structure of the base station antenna shown in the figure is a bottom-up view without the reflector;

[0055] Fig.21 This is a schematic diagram of a top view of the structure of a base station antenna according to another embodiment of the present application;

[0056] Fig. 22 for Fig.21 The schematic diagram of the top view of the base station antenna without the reflector is shown.

[0057] Among them, 1, reflecting plate; 11, first through hole; 12, accommodating cavity; 13, side opening; 14, end opening;

[0058] 2. Cover plate; 21. Cover plate body; 22. Connecting plate; 23. Second through hole; 24. First cover plate portion; 25. Connecting plate portion; 26. Second cover plate portion; 27. Avoidance notch; 28. Screw hole;

[0059] 3. Feed network; 30. Output port; 31. Strip line; 32. First medium; 33. Second medium;

[0060] 4. Radiating unit; 41. Feed plate. DETAILED DESCRIPTION

[0061] In order to more clearly understand the above-mentioned purposes, features and advantages of the present application, the scheme of the present application will be further described below. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0062] In the following description, many specific details are set forth to facilitate a full understanding of the present application, but the present application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only part of the embodiments of the present application, rather than all of the embodiments.

[0063] The following is combined with Figures 1 to 22 The base station antenna provided in the embodiment of the present application is exemplified.

[0064] Reference Figures 1 to 22 As shown, some embodiments of the present application provide a base station antenna, comprising: a reflector 1, a cover plate 2, a feed network 3 and a radiation unit 4.

[0065] Among them, refer to Figure 1 , Figure 2 , Fig.12 and Fig.13 As shown, the reflecting plate 1 has a first surface and a second surface relative to each other. The first surface of the reflecting plate 1 is used to install the radiation unit 4. The first surface of the reflecting plate 1 can also be called the front surface of the reflecting plate 1, and the second surface of the reflecting plate 1 can also be called the back surface of the reflecting plate 1.

[0066] The reflector 1 is provided with a first through hole 11 which passes through the first surface and the second surface of the reflector 1. The first through hole 11 is used for allowing the feeding plate 41 of the radiation unit 4 to pass through, so that the feeding plate 41 of the radiation unit 4 passes through the first through hole 11 and is electrically connected to the feeding network 3 arranged on the back side of the reflector 1.

[0067] Reference Figure 1 and Fig.12 As shown, the cover plate 2 is disposed on the second surface of the reflector 1 and is electrically connected to the reflector 1 . An accommodating cavity 12 is formed between the cover plate 2 and the reflector 1 . The feeding network 3 is disposed in the accommodating cavity 12 .

[0068] Specifically, the cover plate 2 can adopt an integrated metal cover plate 2, and the metal cover plate 2 is electrically connected to the reflector 1 to realize that the feed network 3 and the reflector 1 share the same ground, and the cover plate 2 does not need to be electroplated, thereby avoiding environmental pollution caused by the electroplating process. Specifically, the cover plate 2 can be fixed to the reflector 1 by screw connection, riveting connection, or welding connection, so that the cover plate 2 and the reflector 1 are electrically connected. In addition, the cover plate 2 can also be integrally formed with the reflector 1 to realize the electrical connection between the cover plate 2 and the reflector 1. Exemplarily, the cover plate 2 and the reflector 1 can be integrally extruded, and specifically, the cover plate 2 and the reflector 1 can be integrally formed by extrusion of aluminum alloy.

[0069] In the specific implementation, refer to Figures 12 to 22 As shown, the cover plate 2 can be in a bent form, specifically, a "J"-shaped bent plate, and the middle area of ​​the cover plate 2 (that is, the top area of ​​the "J" shape) is fixedly connected to the reflector 1. Specifically, the cover plate 2 can be fixed to the reflector 1 by screwing or the like, so that the cover plate 2 and the reflector 1 are electrically connected, and a receiving cavity opened on both sides is formed between the cover plate 2 and the reflector 1 to accommodate the feeding network 3.

[0070] Reference Figures 1 to 11 As shown, the cover plate 2 can also be a T-shaped structure, that is, the cover plate 2 can be a T-shaped plate, the vertical side of the T-shaped plate is arranged upward, and is fixedly connected to the reflector 1. Specifically, the cover plate 2 can be fixed to the reflector 1 by laser welding or the like, so that the cover plate 2 and the reflector 1 are electrically connected, and a receiving cavity opened to both sides is formed between the cover plate 2 and the reflector 1 to accommodate the feed network 3. For the cover plate 2 of the T-shaped structure, it can also be integrally formed with the reflector 1 by aluminum alloy extrusion. Of course, the cover plate 2 and the reflector 1 can also be integrally formed by extrusion of other metal parts. In this way, there is no need to separately make the cover plate 2 and the reflector 1, which makes production and assembly simpler and more efficient.

[0071] Of course, the cover plate 2 may also adopt other structural forms, as long as the cover plate 2 can be electrically connected to the reflector 1 and a receiving cavity for receiving the feed network 3 is formed between the cover plate 2 and the reflector 1. The structural form of the cover plate 2 is easier to process, and only one cover plate 2 is used to form a receiving cavity 12 between the cover plate 2 and the reflector 1, making the assembly of the cover plate 2 and the reflector 1 more convenient.

[0072] In addition, the edge of the cover plate 2 can be supported by a structural member, that is, a structural member can be arranged between the edge of the cover plate 2 and the reflector 1 to prevent the cover plate 2 from deforming and causing changes in electrical performance.

[0073] Reference Figures 1 to 4 , Figures 12 to 15 As shown, the radiation unit 4 is disposed on the first surface of the reflection plate 1 , and the radiation unit 4 has a feeding plate 41 , and the feeding plate 41 passes through the first through hole 11 and is electrically connected to the feeding network 3 to realize feeding of the radiation unit 4 .

[0074] With such an arrangement, there is no need to use a cable to connect the radiation unit 4 and the feeding network 3, which can reduce cable loss, improve the efficiency of the base station antenna, and reduce the number of wiring and solder joints during production, thereby solving many problems caused by the use of cable connection, such as the need for wiring during production, a large number of solder joints, and the loss of the cable itself affecting the efficiency of the antenna; and the feeding network 3 is loaded into the accommodating cavity 12 from the back side of the reflecting plate 1. Since the radiation unit 4 is arranged on the front side of the reflecting plate 1, there is enough space on the back side of the reflecting plate 1 for the feeding network 3 to be loaded into the accommodating cavity 12, thereby making the assembly of the feeding network 3 more convenient.

[0075] In addition, refer to Figure 3 and Figure 4 As shown, the feed network 3 has an output port 30 for connecting to the feed plate 41 , and a hole can be opened at a position corresponding to the output port 30 on the cover plate 2 to facilitate welding connection between the radiation unit 4 and the output port 30 .

[0076] In some embodiments, reference Figures 1 to 3 , Figure 12 to Figure 14 As shown, the cover plate 2 is extended along the first direction, and two opposite sides of the cover plate 2 and the reflector 1 respectively form side openings 13 communicating with the accommodating cavity 12, that is, the accommodating cavity 12 is open to both sides. Figure 3 and Fig.14 As shown, the arrow in the figure indicates the first direction, that is, the extension direction of the cover plate 2.

[0077] With such arrangement, the feed network 3 can be directly loaded into the accommodating cavity 12 from the side opening 13 of the accommodating cavity 12, or the feed network 3 can be directly taken out from the side opening 13 of the accommodating cavity 12, so that the assembly and maintenance of the feed network 3 are more convenient and flexible. In addition, since the side opening 13 extends along the extension direction of the cover plate 2, that is, the side opening 13 is a long opening extending along the extension direction of the cover plate 2, it is convenient to insert the feed network 3 into the accommodating cavity 12 transversely along the extension direction perpendicular to the long opening, and the distance required for the feed network 3 to be moved transversely is short, so that insertion and disassembly are more convenient.

[0078] For example, refer to Figure 2 and Fig.13 As shown, the base station antenna generally includes a plurality of radiation units 4, and the plurality of radiation units 4 are sequentially arranged on the reflection plate 1 along a first direction. In order to realize the installation of the plurality of radiation units 4 on the reflection plate 1, the reflection plate 1 is generally arranged as a long strip-shaped plate structure extending along the first direction. Figure 3 and Fig.14 As shown, the cover plate 2 is configured as a long strip structure extending along a first direction, the first direction is formed as the length direction of the cover plate 2, and the width direction of the cover plate 2 is formed perpendicular to the first direction, and the two opposite side edges of the cover plate 2 respectively form side openings 13 connected to the accommodating cavity 12 between the reflector 1, that is, the two side edges of the cover plate 2 opposite to each other along the width direction respectively form side openings 13 connected to the accommodating cavity 12 between the reflector 1, or in other words, the two side edges of the cover plate 2 extending along the first direction respectively form side openings 13 connected to the accommodating cavity 12 between the reflector 1, and the side openings 13 are formed on the long sides of the cover plate 2, so the side openings 13 can also be called long side openings.

[0079] In a specific implementation, the feed network 3 can be directly loaded into the accommodating cavity 12 from the side opening 13 of the accommodating cavity 12, or the feed network 3 can be directly taken out from the side opening 13 of the accommodating cavity 12, so that the assembly and maintenance of the feed network 3 are more convenient and flexible. Specifically, when installing the feed network 3, the feed network 3 can be directly loaded into the accommodating cavity 12 from the side opening 13 of the accommodating cavity 12. Specifically, the feed network 3 can be inserted into the accommodating cavity 12 transversely along the extending direction perpendicular to the long opening, and the loading direction is perpendicular to the elongated direction of the long opening. Figure 3 In the direction of the arrow shown, the distance required for the feed network 3 to be moved horizontally is short, and the insertion is more convenient; when the feed network 3 is removed, the feed network 3 can be directly taken out from the side opening 13 of the accommodating cavity 12. Specifically, the feed network 3 can be pulled out of the accommodating cavity 12 in a direction perpendicular to the extension direction of the long opening, and the removal direction is perpendicular to the direction of the long opening. Figure 3 In the direction of the arrow shown, the distance required for lateral removal of the feed network 3 is short, and disassembly is more convenient; thus, assembly and maintenance of the feed network 3 are more convenient and flexible.

[0080] In some embodiments, reference Figure 3 and Fig.14 As shown, the cover plate 2 is extended along the first direction, and two opposite ends of the cover plate 2 and the reflector plate 1 respectively form end openings 14 communicating with the accommodating cavity 12 .

[0081] That is to say, the cover plate 2 can be set as a long strip structure extending along a first direction, the first direction forms the length direction of the cover plate 2, and the width direction of the cover plate 2 is formed perpendicular to the first direction. The two opposite ends of the cover plate 2 respectively form end openings 14 connected to the accommodating cavity 12 between the reflecting plate 1, that is, the two opposite ends of the cover plate 2 along the length direction respectively form end openings 14 connected to the accommodating cavity 12 between the reflecting plate 1.

[0082] In a specific implementation, the feed network 3 can also be directly loaded into the accommodating cavity 12 from the end opening 14 of the accommodating cavity 12, or the feed network 3 can be directly taken out from the end opening 14 of the accommodating cavity 12, so that the assembly and maintenance of the feed network 3 are more convenient and flexible.

[0083] In some embodiments, reference Figures 3 to 5 , Figures 14 to 16 As shown, the cover plate 2 is extended along the first direction, and a connection portion protruding toward the reflective plate 1 is formed in the middle of the cover plate 2 in a direction perpendicular to the first direction, or in other words, in the width direction of the cover plate 2. The cover plate 2 is connected to the reflective plate 1 through the protruding connection portion, and the protruding connection portion divides the accommodating cavity 12 formed between the cover plate 2 and the reflective plate 1 into two sub-cavities, and the two sub-cavities respectively have a side opening facing away from each other.

[0084] In some embodiments, reference Figure 3 , Figure 7 , Fig.14 and Fig.18 As shown, each radiating unit 4 has two feeding plates 41; the feeding network 3 includes two feeding parts, and the two feeding parts are respectively provided with output ports 30 corresponding to the two feeding plates 41 of each radiating unit 4, and each feeding plate 41 is electrically connected to the corresponding output port 30. In other words, each radiating unit 4 has two feeding plates 41; the feeding network 3 includes two feeding parts, one of the two feeding parts is provided with an output port 30 corresponding to one of the feeding plates 41 of each radiating unit 4, and the other of the two feeding parts is provided with an output port 30 corresponding to the other feeding plate 41 of each radiating unit 4, and each feeding plate 41 is electrically connected to the corresponding output port 30.

[0085] In a specific implementation, the two feeding parts of the feed network 3 can be respectively loaded into the accommodating cavity 12 through the two side openings 13 of the accommodating cavity 12. Specifically, the two feeding parts of the feed network 3 can be respectively loaded into the corresponding sub-cavities through the side openings 13 of the two sub-cavities divided by the accommodating cavity 12, so as to realize the installation of the two feeding parts of the feed network 3 in the accommodating cavity 12.

[0086] In some embodiments, reference Figure 2 and Fig.13 As shown, there are multiple radiation units 4, and the multiple radiation units 4 are sequentially arranged on the reflection plate 1 along the first direction, and each radiation unit 4 has two feeding plates 41. Figure 3 and Fig.14 As shown, the feeding network 3 includes two feeding parts, each of which is respectively provided with a plurality of output ports 30 arranged in sequence along a first direction, wherein the plurality of output ports 30 arranged on one of the feeding parts are respectively arranged corresponding to one of the feeding plates 41 of each of the plurality of radiation units 4, and the plurality of output ports 30 arranged on the other feeding part are respectively arranged corresponding to another feeding plate 41 of each of the plurality of radiation units 4.

[0087] For example, refer to Figure 2 and Fig.13 As shown, the number of radiation units 4 is multiple, and the multiple radiation units 4 are radiation unit 4a, radiation unit 4b, radiation unit 4c, radiation unit 4d, radiation unit 4e, and radiation unit 4f in sequence; refer to Figure 3 and Fig.14 As shown, one of the feeding parts is sequentially provided with a plurality of output ports 30, which are sequentially output port 30a, output port 30b, output port 30c, output port 30d, output port 30e, and output port 30f, a feeding plate 41 of the radiation unit 4a is correspondingly connected to the output port 30a, a feeding plate 41 of the radiation unit 4b is correspondingly connected to the output port 30b, a feeding plate 41 of the radiation unit 4c is correspondingly connected to the output port 30c, a feeding plate 41 of the radiation unit 4d is correspondingly connected to the output port 30d, a feeding plate 41 of the radiation unit 4e is correspondingly connected to the output port 30e, and a feeding plate 41 of the radiation unit 4f is correspondingly connected to the output port 30f.

[0088] In some embodiments, reference Figure 1 and Fig.12 As shown, the feed network 3 is installed in the accommodating cavity 12 through a structural member, and the height of the feed network 3 is located in the middle of the accommodating cavity 12. This arrangement can prevent the feed network 3 from being in conductive contact with the reflector 1 or the cover plate 2.

[0089] Exemplarily, the structural member may include a support block and a pressing block arranged corresponding to the support block, the feed network 3 is supported on the support block, and the pressing block is pressed on the feed network 3, so as to realize the installation of the feed network 3 in the accommodating cavity 12. In order to improve the stability of the installation of the feed network 3 in the accommodating cavity 12, the number of the support block and the corresponding pressing block may be multiple, and the multiple support blocks and the corresponding pressing blocks are arranged in the accommodating cavity 12 at intervals along the extension direction of the cover plate 2. Of course, the specific structure of the structural member is not limited to the above definition, and can be reasonably set according to actual conditions.

[0090] In some embodiments, reference Figure 1 and Fig.12 As shown, the feeding network 3 includes a strip line 31 , a first medium 32 and a second medium 33 . The first medium 32 and the second medium 33 are arranged on both sides of the strip line 31 and are slidably connected to the strip line 31 .

[0091] In a specific implementation, the first medium 32 can be set on the upper side of the strip line 31 and slidably connected to the strip line 31, the second medium 33 can be set on the lower side of the strip line 31 and slidably connected to the strip line 31, and the first medium 32 and the second medium 33 can cover part of the strip line 31. By moving the first medium 32 and / or the second medium 33, the dielectric coverage area of ​​the strip line 31 can be changed, thereby changing the equivalent dielectric constant to change the phase of the feeding circuit, thereby realizing the phase shifting function.

[0092] Reference Figures 1 to 11 , which is a schematic diagram of the structure of a base station antenna according to an embodiment of the present application. In this embodiment, the cover plate 2 is a T-shaped cover plate.

[0093] Specifically, refer to Figures 1 to 5 As shown, the cover plate 2 includes a cover plate body 21 and a connecting plate 22 connected to the cover plate body 21 at an angle, the connecting plate 22 is connected to the side of the cover plate body 21 facing the reflector 1, the connecting plate 22 is electrically connected to the reflector 1, and a accommodating cavity 12 is formed between the cover plate body 21 and the reflector 1, and the connecting plate 22 divides the accommodating cavity 12 into two sub-cavities.

[0094] In a specific implementation, the cover plate body 21 can be a long strip-shaped plate-like structure extending along the first direction. The cover plate body 21 can be arranged parallel to the reflective plate 1. The connecting plate 22 is connected to the side plate surface of the cover plate body 21 facing the reflective plate 1, and is vertically connected to the middle part of the cover plate body 21 in a direction perpendicular to the first direction, that is, in the width direction of the cover plate body 21; when the cover plate 2 and the reflective plate 1 are assembled, the connecting plate 22 is vertically connected to the middle part of the reflective plate 1 along the width direction, so that the cover plate 2 and the reflective plate 1 are jointly constructed into an I-shaped structure to form a accommodating cavity 12 with openings on both sides between the cover plate 2 and the reflective plate 1.

[0095] Of course, the connection plate 22 is not limited to being vertically connected to the cover plate body 21, and the connection angle between the two may not be 90 degrees, but a suitable angle close to 90 degrees, such as 85 degrees, 80 degrees, etc.

[0096] In a specific implementation, the cover plate 2 can be electrically connected to the reflector plate 1 by welding or coupling connection. Specifically, the connection plate 22 of the cover plate 2 can be electrically connected to the reflector plate 1 by welding or coupling connection.

[0097] It should be noted that, for the solution in which the T-shaped cover plate 2 is electrically connected to the reflector 1 by coupling connection, the bottom of the T-shaped cover plate 2 can be deformed to achieve coupling connection with the reflector 1. For example, the bottom of the T-shaped cover plate 2 is flattened to form a structural member similar to an "I" shape, that is, the end of the connecting plate 22 of the cover plate 2 away from the cover plate body 21 can be flattened to appropriately increase the end face area of ​​the connecting plate 22 away from the cover plate body 21, thereby achieving coupling connection with the reflector 1.

[0098] Of course, in a specific implementation, the cover plate 2 and the reflector 1 can also be formed by integral extrusion. Exemplarily, the cover plate 2 and the reflector 1 are integrally formed by extrusion of an aluminum alloy. In this way, there is no need to separately manufacture the cover plate 2 and the reflector 1, making production and assembly simpler and more efficient. Of course, the cover plate 2 and the reflector 1 can also be integrally formed by extrusion of other metal parts. In addition, the cover plate 2 and the reflector 1 are not limited to integral extrusion molding, and can also be integrally formed by other processing methods, such as integral die casting.

[0099] Specifically, refer to Figure 3 , Figure 7 , Figures 9 to 11 As shown, the feeding network 3 includes two feeding parts, which are respectively located in two sub-cavities, and each feeding part is provided with an output port 30; each radiating unit 4 has two feeding plates 41, and the two feeding plates 41 of each radiating unit 4 are respectively electrically connected to the output ports 30 provided in the two feeding parts in a one-to-one correspondence.

[0100] In a specific implementation, the two feeding parts of the feeding network 3 can be respectively loaded into the accommodating cavity 12 from the side openings 13 of the two sub-cavities, and of course, can also be loaded into the accommodating cavity 12 from the end openings 14 of the two sub-cavities. The two feeding plates 41 of each radiation unit 4 pass through the reflector 1 respectively, and are respectively electrically connected to the output ports 30 provided in the two feeding parts in a one-to-one correspondence. Specifically, the feeding plate 41 can be connected to the output port 30 by welding.

[0101] Specifically, refer to Figure 6 and Figure 8As shown, the cover body 21 is provided with a second through hole 23 corresponding to the output port 30 of the feed network 3, so that the welding point between the feed sheet 41 and the feed network 3 is exposed through the second through hole 23 for welding operation.

[0102] Specifically, refer to Figure 1 As shown, the feed network 3 is erected in the middle of the accommodating cavity 12 through a structural member. A dielectric block is provided in the accommodating cavity 12, and the dielectric block is slidably connected to the strip line 31 of the feed network 3. The sliding of the dielectric block changes the equivalent dielectric constant around the feed network 3, thereby changing the electrical length of the feed network 3, thereby realizing the phase shifting function.

[0103] In the specific implementation, refer to Figure 1 As shown, the feeding network 3 includes a strip line 31, a first dielectric 32 and a second dielectric 33, wherein the first dielectric 32 and the second dielectric 33 are arranged on both sides of the strip line 31 and are slidably connected to the strip line 31. The first dielectric 32 and the second dielectric 33 can cover part of the strip line 31, and by moving the first dielectric 32 and / or the second dielectric 33, the dielectric coverage area of ​​the strip line 31 can be changed, thereby changing the equivalent dielectric constant to change the phase of the feeding circuit, thereby realizing the phase shifting function.

[0104] Reference Figures 12 to 22 As shown, it is a schematic diagram of the structure of the base station antenna described in other embodiments of the present application. In this embodiment, the cover plate 2 is a bent structure, specifically, the cover plate 2 is a "X"-shaped bent plate.

[0105] Specifically, refer to Figures 12 to 16 As shown, the cover plate 2 includes a first cover plate portion 24, two connecting plate portions 25 and two second cover plate portions 26. The two connecting plate portions 25 are respectively connected to the two opposite side edges of the first cover plate portion 24 at an angle, and the two second cover plate portions 26 are respectively connected to the two connecting plate portions 25 at an angle, and extend in a direction away from each other relative to the first cover plate portion 24; the first cover plate portion 24 protrudes toward the reflector 1 relative to the two second cover plate portions 26 and is electrically connected to the reflector 1, and a accommodating cavity 12 is formed between the two second cover plate portions 26 and the reflector 1, and the two connecting plate portions 25 separate the accommodating cavity 12 into two sub-cavities.

[0106] In a specific implementation, the two connecting plate portions 25 can be respectively connected vertically to the two opposite sides of the first cover plate portion 24, and the two connecting plate portions 25 are located on the same side of the first cover plate portion 24, and the two second cover plate portions 26 are respectively connected vertically to the two connecting plate portions 25, and extend in a direction away from each other relative to the first cover plate portion 24, and the two second cover plate portions 26 are located on the same side of the first cover plate portion 24, so that the cover plate 2 is configured into a "J"-shaped structure, wherein the first cover plate portion 24 is formed as the top end surface of the "J"-shaped structure. Of course, in a specific implementation, the connecting plate portion 25 is not limited to being vertically connected to the first cover plate portion 24, and the two second cover plate portions 26 are not limited to being vertically connected to the two connecting plate portions 25, and there can be a suitable angle between the two that is not equal to 90 degrees, such as 85 degrees, 80 degrees, etc.

[0107] In a specific implementation, the cover plate 2 can be manufactured by using a sheet metal bending process, or by using a sheet metal stamping process, or by using a sheet metal pultrusion process, and of course, other processing processes can also be used.

[0108] When the cover plate 2 is assembled with the reflector 1, the first cover plate portion 24 is located on the side of the two second cover plate portions 26 facing the reflector 1, and the first cover plate portion 24 protrudes toward the reflector 1 relative to the two second cover plate portions 26, the first cover plate portion 24 is formed as the top end surface of the I-shaped cover plate, the first cover plate portion 24 is connected to the middle part of the reflector 1 along the width direction, the two second cover plate portions 26 are arranged parallel to the reflector 1, and a accommodating cavity 12 opening to both sides is formed between the two second cover plate portions 26 and the reflector 1, and the two connecting plate portions 25 separate the accommodating cavity 12 into two sub-cavities.

[0109] In a specific implementation, the radiation unit 4 can be electrically connected to the reflection plate 1 by welding, screws, coupling, etc.; the cover plate 2 can be electrically connected to the reflection plate 1 by screw connection, riveting connection, welding connection, coupling connection, etc.

[0110] Specifically, refer to Fig.14 , Fig.18 , Figure 20 to Figure 22 As shown, the feeding network 3 includes two feeding parts, which are respectively located in two sub-cavities, and each feeding part is provided with an output port 30; each radiating unit 4 has two feeding plates 41, and the two feeding plates 41 of each radiating unit 4 are respectively electrically connected to the output ports 30 provided in the two feeding parts in a one-to-one correspondence.

[0111] In a specific implementation, the two feeding parts of the feeding network 3 can be respectively loaded into the accommodating cavity 12 from the side openings 13 of the two sub-cavities, and of course, can also be loaded into the accommodating cavity 12 from the end openings 14 of the two sub-cavities. The two feeding plates 41 of the radiation unit 4 pass through the reflector 1 respectively, and are respectively electrically connected to the output ports 30 provided by the two feeding parts in a one-to-one correspondence. Specifically, the feeding plates 41 can be connected to the output ports 30 by welding.

[0112] In a specific embodiment, the first cover portion 24 is electrically connected to the reflective plate 1 via screws. Specifically, a plurality of screw holes 28 may be provided on the first cover portion 24, and mounting holes corresponding to the plurality of screw holes 28 are provided on the reflective plate 1. The screws pass through the screw holes 28 and the corresponding mounting holes to fix the cover 2 on the reflective plate 1.

[0113] Specifically, refer to Fig.14 , Fig.15 and Fig.19 As shown, the first cover plate portion 24 is electrically connected to the reflector 1 by screws, and the feed plate 41 is electrically connected to the feed network 3 before the first cover plate portion 24 is electrically connected to the reflector 1 by screws. In other words, the feed network 3 can be installed first, and after the feed plate 41 of the radiation unit 4 is electrically connected to the feed network 3, the cover plate 2 can be installed. Because in the installation sequence, the feed plate 41 of the radiation unit 4 can be electrically connected to the feed network 3 first, and then the cover plate 2 is installed, the cover plate 2 does not need to be perforated, that is, the portion of the cover plate 2 corresponding to the output port 30 of the feed network 3 does not need to be perforated, so that the performance of the feed network 3 is more stable and the consistency is better. Of course, in a specific implementation, a hole can also be perforated at the portion of the cover plate 2 corresponding to the output port 30 of the feed network 3 to facilitate the inspection of the solder joints and facilitate debugging.

[0114] Of course, in a specific implementation, it is also possible to arrange that the first cover plate portion 24 is electrically connected to the reflector 1 by screws before the feed plate 41 is electrically connected to the feed network 3. That is to say, the cover plate 2 can be installed first, and then the feed network 3 can be installed, and the feed plate 41 of the radiation unit 4 can be electrically connected to the feed network 3. In this embodiment, a hole is opened at a portion of the cover plate 2 corresponding to the output port 30 of the feed network 3, so that the feed plate 41 of the radiation unit 4 can be electrically connected to the output port 30 of the feed network 3 by welding through the hole.

[0115] In some embodiments, reference Figures 14 to 17As shown, at least one of the first cover portion 24 and the connecting plate portion 25 is provided with an avoidance notch 27 corresponding to the feeding plate 41; that is, when the width of the first cover portion 24 is greater than the spacing between the two feeding plates 41 of the radiation unit 4, after the two feeding plates 41 pass through the first through hole 11 corresponding to the reflecting plate 1, they will interfere with the first cover portion 24 and / or the connecting plate portion 25 of the cover plate 2. At this time, it is necessary to open an avoidance notch 27 on the first cover portion 24 and / or the connecting plate portion 25 to provide installation space for the feeding plate 41 and the output port 30 of the feeding network 3.

[0116] Of course, in a specific implementation, the feeding sheet 41 can also be arranged to avoid the first cover plate portion 24 and the connecting plate portion 25. That is to say, the spacing between the two feeding sheets 41 of the radiation unit 4 can be set to be greater than the width of the first cover plate portion 24, so that the connection between the feeding sheet 41 and the output port 30 will not interfere with the first cover plate portion 24 and the connecting plate portion 25, thereby eliminating the need to open an avoidance notch 27 on the first cover plate portion 24 and / or the connecting plate portion 25.

[0117] Specifically, the feeding network 3 includes two feeding parts, which are respectively located in two sub-cavities, and each feeding part is provided with an output port 30; each radiating unit 4 has two feeding plates 41, and the two feeding plates 41 of each radiating unit 4 are respectively electrically connected to the output ports 30 set in the two feeding parts in a one-to-one correspondence.

[0118] In a specific implementation, the two feeding parts of the feeding network 3 can be respectively loaded into the accommodating cavity 12 from the side openings 13 of the two sub-cavities. Of course, the two feeding parts of the feeding network 3 can be electrically connected to the corresponding feeding sheets 41 respectively, and then the cover plate 2 can be installed on the reflecting plate 1.

[0119] Specifically, refer to Fig.12 As shown, the feed network 3 is erected in the middle of the accommodating cavity 12 through a structural member. A dielectric block is provided in the accommodating cavity 12, and the dielectric block is slidably connected to the strip line 31 of the feed network 3. The sliding of the dielectric block changes the equivalent dielectric constant around the feed network 3, thereby changing the electrical length of the feed network 3, thereby realizing the phase shifting function.

[0120] In the specific implementation, refer to Fig.12 As shown, the feeding network 3 includes a strip line 31, a first dielectric 32 and a second dielectric 33, wherein the first dielectric 32 and the second dielectric 33 are arranged on both sides of the strip line 31 and are slidably connected to the strip line 31. The first dielectric 32 and the second dielectric 33 can cover part of the strip line 31, and by moving the first dielectric 32 and / or the second dielectric 33, the dielectric coverage area of ​​the strip line 31 can be changed, thereby changing the equivalent dielectric constant to change the phase of the feeding circuit, thereby realizing the phase shifting function.

[0121] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0122] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A base station antenna, characterized in that: include: A reflective plate having a first surface and a second surface opposite to each other, wherein the reflective plate is provided with a first through hole penetrating the first surface and the second surface of the reflective plate; A cover plate, disposed on the second surface of the reflector and electrically connected to the reflector, wherein a receiving cavity is formed between the cover plate and the reflector; A feeding network is arranged in the accommodating cavity; A radiation unit is arranged on the first surface of the reflection plate, and the radiation unit has a feeding plate, and the feeding plate passes through the first through hole and is electrically connected to the feeding network.

2. The base station antenna according to claim 1, characterized in that: The cover plate is extended along the first direction, and two opposite sides of the cover plate and the reflector plate respectively form side openings communicating with the accommodating cavity; And / or, the cover plate is extended along the first direction, and two opposite ends of the cover plate respectively form end openings communicating with the accommodating cavity between the two opposite ends of the cover plate and the reflecting plate.

3. The base station antenna according to claim 1, characterized in that: Each of the radiation units has two feeding plates; The feeding network includes two feeding parts, one of the two feeding parts is provided with an output port corresponding one-to-one to one of the feeding plates of each of the radiating units, and the other of the two feeding parts is provided with an output port corresponding one-to-one to the other feeding plate of each of the radiating units, and each feeding plate is electrically connected to the corresponding output port.

4. The base station antenna according to claim 1, characterized in that: The cover plate is a T-shaped plate, and the cover plate comprises a cover plate body and a connecting plate connected to the cover plate body at an angle; The connecting plate is connected to a side of the cover plate body facing the reflecting plate and is electrically connected to the reflecting plate. The accommodating cavity is formed between the cover plate body and the reflecting plate. The connecting plate divides the accommodating cavity into two sub-cavities.

5. The base station antenna according to claim 4, characterized in that: The feeding network comprises two feeding parts, the two feeding parts are respectively located in the two sub-cavities, and each feeding part is provided with an output port; Each of the radiation units has two feeding plates, and the two feeding plates of each of the radiation units are electrically connected to the output ports provided at two feeding parts respectively in a one-to-one correspondence.

6. The base station antenna according to claim 4, characterized in that: The connecting plate is welded or coupled to the reflecting plate; And / or, a second through hole corresponding to the output port of the feed network is provided on the cover plate body, so that a welding point between the feed sheet and the feed network is exposed through the second through hole for welding operation.

7. The base station antenna according to claim 4, characterized in that: The cover plate and the reflector plate are integrally extruded.

8. The base station antenna according to claim 1, characterized in that: The cover plate is a "X"-shaped bent plate, comprising a first cover plate portion, two connecting plate portions and two second cover plate portions, the two connecting plate portions are respectively connected to two opposite sides of the first cover plate portion at an angle, and the two second cover plate portions are respectively connected to the two connecting plate portions at an angle and extend in a direction away from each other relative to the first cover plate portion; The first cover plate portion protrudes toward the reflector relative to the two second cover plate portions and is electrically connected to the reflector. The accommodating cavity is formed between the two second cover plate portions and the reflector. The two connecting plate portions divide the accommodating cavity into two sub-cavities.

9. The base station antenna according to claim 8, characterized in that: The feeding network comprises two feeding parts, the two feeding parts are respectively located in the two sub-cavities, and each feeding part is provided with an output port; Each of the radiation units has two feeding plates, and the two feeding plates of each of the radiation units are electrically connected to the output ports provided at two feeding parts respectively in a one-to-one correspondence.

10. The base station antenna according to claim 8, characterized in that: The first cover plate portion is electrically connected to the reflector plate by screws, rivets, welding or coupling; Among them, when the first cover part is electrically connected to the reflector plate screw, the feed sheet is electrically connected to the feed network before the first cover part is electrically connected to the reflector plate screw, or the first cover part is electrically connected to the reflector plate screw before the feed sheet is electrically connected to the feed network.

11. The base station antenna according to claim 10, characterized in that: At least one of the first cover plate portion and the connecting plate portion is provided with an avoidance notch corresponding to the feeding sheet; Alternatively, the power feeding plate is arranged away from the first cover plate portion and the connecting plate portion.

12. The base station antenna according to any one of claims 1 to 11, characterized in that: The feed network is installed in the accommodating cavity through structural components, and the height of the feed network is located in the middle of the accommodating cavity.

13. The base station antenna according to any one of claims 1 to 11, characterized in that: The feeding network comprises a strip line, a first medium and a second medium. The first medium and the second medium are arranged at two sides of the strip line and are slidably connected to the strip line.

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