Base station antenna

Abstract

The application 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 has opposite first and second surfaces, and the reflecting plate is provided with a through hole penetrating through the first and second surfaces 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 a containing cavity is formed between the cover plate and the reflecting plate; the feed network is arranged in the containing cavity; and the radiation unit is arranged on the first surface of the reflecting plate and has a feed sheet, the feed sheet is electrically connected with the feed network through the through hole. The base station antenna provided by the application can realize that the cover plate and the reflecting plate jointly form the containing cavity by adopting only one cover plate, so that the assembly of the cover plate and the reflecting plate is more convenient; the feed network is assembled into the containing cavity from the back surface of the reflecting plate, and the back surface of the reflecting plate has sufficient space for assembling the feed network into the containing cavity, so that the assembly of the feed network is more convenient.

Description

Technical Field

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

[0002] In current base station antennas, coaxial cables are typically used to connect the radiating element and the feed network for power supply. Because there are many connecting cables, wiring is required during production, and there are many solder joints. Furthermore, the loss of the connecting cables themselves will affect the efficiency of the antenna. In addition, most current base station antennas use profile cavities, and the surface of the cavity must be electroplated to facilitate the welding of cables. Electroplating will cause environmental pollution.

[0003] To address the aforementioned technical problems associated with using cables, related technologies propose using two sheet metal pieces joined together with the front of a reflector to form a cavity. The opening of the cavity faces the radiating unit, and the power supply network is housed within this cavity and coupled to the radiating unit, thus achieving a cable-free connection. However, this structure requires a large number of sheet metal pieces, making the splicing of the sheet metal and reflector inconvenient. Furthermore, the space on the front of the reflector for the power supply network to be installed in the cavity is small, resulting in inconvenient assembly of the power supply network. Summary of the Invention

[0004] In order to solve the above-mentioned technical problems, or at least partially solve the above-mentioned technical problems, this application provides a base station antenna.

[0005] This application provides a base station antenna, including:

[0006] A reflector having a first surface and a second surface opposite to each other, and a first through hole is provided on the reflector through the first surface and the second surface of the reflector.

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

[0008] A power supply network is disposed within the receiving cavity;

[0009] A radiating unit is disposed on the first surface of the reflector, the radiating unit having a feed plate that passes through the first through hole and is electrically connected to the feed network.

[0010] Optionally, the cover plate extends along a first direction, and two opposite sides of the cover plate form side openings communicating with the receiving cavity between the reflector plate and the cover plate.

[0011] And / or, the cover plate extends along a first direction, and the two opposite ends of the cover plate respectively form end openings communicating with the receiving cavity between the reflector plate.

[0012] Optionally, each of the radiating elements has two of the feed plates;

[0013] The power supply network includes two power supply sections. One of the two power supply sections is provided with an output port corresponding to one of the power supply segments of each of the radiating elements. The other of the two power supply sections is provided with an output port corresponding to the other power supply segment of each of the radiating elements. Each power supply segment is electrically connected to the corresponding output port.

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

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

[0016] Optionally, the power supply network includes two power supply sections, which are respectively located in the two sub-cavities, and each power supply section is provided with an output port;

[0017] Each of the radiating elements has two feed plates, and the two feed plates of each radiating element are electrically connected to the output ports of the two feed sections respectively.

[0018] Optionally, the connecting plate is welded to or coupled to the reflector.

[0019] And / or, the cover plate body is provided with a second through hole corresponding to the output port of the power supply network, so as to expose the welding point between the power supply piece and the power supply network through the second through hole for welding operation.

[0020] Optionally, the cover plate and the reflector plate are integrally extruded.

[0021] Optionally, the cover plate is a Z-shaped bent plate, the cover plate includes a first cover plate portion, two connecting plate portions and two second cover plate portions, the two connecting plate portions are respectively connected to the two opposite sides of the first cover plate portion at an angle, the two second cover plate portions are respectively connected to the two connecting plate portions at an angle, and extend 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 receiving cavity is formed between the two second cover plate portions and the reflector. The two connecting plate portions divide the receiving cavity into two sub-cavities.

[0023] Optionally, the power supply network includes two power supply sections, which are respectively located in the two sub-cavities, and each power supply section is provided with an output port;

[0024] Each of the radiating elements has two feed plates, and the two feed plates of each radiating element are electrically connected to the output ports of the two feed sections respectively.

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

[0026] Wherein, when the first cover plate is electrically connected to the reflector screw, the power supply plate is electrically connected to the power supply network before the first cover plate is electrically connected to the reflector screw, or the first cover plate is electrically connected to the reflector screw before the power supply plate is electrically connected to the power supply 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 power supply piece;

[0028] Alternatively, the power supply plate may be disposed away from the first cover plate portion and the connecting plate portion.

[0029] Optionally, the power supply network is installed in the receiving cavity via structural components, and the height of the power supply network is located in the middle of the receiving cavity.

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

[0031] The technical solution provided in this application has the following advantages compared with the prior art:

[0032] The base station antenna provided in this application features a cover plate on the second surface (or back side) of a reflector. The cover plate is electrically connected to the reflector, and a cavity is formed between the cover plate and the reflector. A feed network is housed within the cavity, allowing the feed network and the reflector to share a common ground. The cover plate does not require electroplating, thus avoiding environmental pollution. A radiating element is located on the first surface (or front side) of the reflector. The feed plate of the radiating element passes through a first through-hole on the reflector and is electrically connected to the feed network on the back side to provide feed power. This eliminates the need for cables, thus solving numerous problems associated with cable connections, such as the need for wiring during production, numerous solder joints, and the impact of cable losses on antenna efficiency. Furthermore, using only one cover plate allows for the formation of a cavity between the cover plate and the reflector, making assembly of the cover plate and the reflector more convenient. The feed network is installed into the cavity from the back side of the reflector. Since the radiating element is located on the front side of the reflector, there is sufficient space on the back side of the reflector for the feed network to be installed into the cavity, further facilitating the assembly of the feed network. Attached Figure Description

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

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

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

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

[0037] Figure 3 for Figure 2 The diagram shows a three-dimensional structure of the base station antenna without the reflector.

[0038] Figure 4 for Figure 3 A partially enlarged structural diagram of section A in the middle;

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

[0040] Figure 6 for Figure 5 The diagram shows a three-dimensional structure of the base station antenna without the reflector.

[0041] Figure 7 This is a schematic diagram showing the connection between the radiating element and the feeding network according to an embodiment of this application;

[0042] Figure 8 This is a bottom-view structural diagram of a base station antenna according to an embodiment of this application;

[0043] Figure 9 for Figure 8 The diagram shows a bottom view of the base station antenna structure without the reflector.

[0044] Figure 10 This is a top view of the base station antenna according to an embodiment of this application;

[0045] Figure 11 for Figure 10 The diagram shows a top view of the base station antenna without the reflector.

[0046] Figure 12 This is a side view of the base station antenna according to an embodiment of this application;

[0047] Figure 13 This is a three-dimensional structural diagram of the front of a base station antenna according to another embodiment of this application;

[0048] Figure 14 for Figure 13 The diagram shows a three-dimensional structure of the base station antenna without the reflector.

[0049] Figure 15 for Figure 14 A partially enlarged structural diagram of section A in the middle;

[0050] Figure 16 This is a three-dimensional structural diagram of the back of the base station antenna according to another embodiment of this application;

[0051] Figure 17 for Figure 16 The diagram shows a three-dimensional structure of the base station antenna without the reflector.

[0052] Figure 18 This is a schematic diagram showing the connection between the radiating unit and the feeding network according to another embodiment of this application;

[0053] Figure 19 This is a bottom-view structural diagram of the base station antenna according to another embodiment of this application;

[0054] Figure 20 for Figure 19 The diagram shows a bottom view of the base station antenna structure without the reflector.

[0055] Figure 21 This is a top view of the base station antenna according to another embodiment of this application;

[0056] Figure 22 for Figure 21 The diagram shows a top view of the base station antenna without the reflector.

[0057] Among them, 1 is a reflector; 11 is a first through hole; 12 is a receiving cavity; 13 is a side opening; and 14 is an end opening.

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

[0059] 3. Power supply network; 30. Output port; 31. Cable; 32. First medium; 33. Second medium;

[0060] 4. Radiation unit; 41. Feed plate. Detailed Implementation

[0061] To better understand the above-mentioned objectives, features, and advantages of this application, the solution of this application will be further described below. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0062] Many specific details are set forth in the following description in order to provide a full understanding of this application, but this application may also be implemented in other ways different from those described herein; obviously, the embodiments in the specification are only some embodiments of this application, and not all embodiments.

[0063] The following is in conjunction with the appendix Figures 1 to 22 The base station antenna provided in the embodiments of this application will be described by way of example.

[0064] Reference Figures 1 to 22 As shown, some embodiments of this application provide a base station antenna, including: a reflector 1, a cover plate 2, a feed network 3, and a radiating element 4.

[0065] Among them, reference Figure 1 , Figure 2 , Figure 12 and Figure 13 As shown, the reflector 1 has a first surface and a second surface opposite to each other. The first surface of the reflector 1 is used to mount the radiation unit 4. The first surface of the reflector 1 can also be referred to as the front surface of the reflector 1, and the second surface of the reflector 1 can also be referred to as the back surface of the reflector 1.

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

[0067] Reference Figure 1 and Figure 12 As shown, the cover plate 2 is disposed on the second surface of the reflector plate 1 and is electrically connected to the reflector plate 1. A receiving cavity 12 is formed between the cover plate 2 and the reflector plate 1, and the power supply network 3 is disposed in the receiving cavity 12.

[0068] Specifically, the cover plate 2 can be an integrated metal cover plate 2. The metal cover plate 2 is electrically connected to the reflector plate 1 to achieve a common ground between the power supply network 3 and the reflector plate 1. The cover plate 2 does not require electroplating, thus avoiding environmental pollution caused by the electroplating process. Specifically, the cover plate 2 can be fixed to the reflector plate 1 by means of screw connection, riveting connection, or welding connection to achieve electrical connection between the cover plate 2 and the reflector plate 1. In addition, the cover plate 2 can also be integrally formed with the reflector plate 1 to achieve electrical connection between the cover plate 2 and the reflector plate 1. For example, the cover plate 2 and the reflector plate 1 can be integrally extruded, specifically, the cover plate 2 and the reflector plate 1 can be integrally extruded from aluminum alloy.

[0069] In specific implementation, refer to Figures 12 to 22 As shown, the cover plate 2 can be in the form of a bend, specifically a Z-shaped bend plate. The middle area of ​​the cover plate 2 (that is, the top area of ​​the Z-shape) is fixedly connected to the reflector plate 1. Specifically, the cover plate 2 can be fixed to the reflector plate 1 by means of screws, so as to realize the electrical connection between the cover plate 2 and the reflector plate 1, and form a receiving cavity that opens to both sides between the cover plate 2 and the reflector plate 1 to accommodate the power supply 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 with its vertical edge facing upwards and fixedly connected to the reflector plate 1. Specifically, the cover plate 2 can be fixed to the reflector plate 1 by means of laser welding, etc., to achieve electrical connection between the cover plate 2 and the reflector plate 1, and to form a receiving cavity that opens to both sides between the cover plate 2 and the reflector plate 1 to accommodate the power supply network 3. For the T-shaped cover plate 2, it can also be integrally formed with the reflector plate 1 by extrusion of aluminum alloy. Of course, the cover plate 2 and the reflector plate 1 can also be integrally formed by extrusion of other metal parts. In this way, there is no need to manufacture the cover plate 2 and the reflector plate 1 separately, which makes the production and assembly simpler and more efficient.

[0071] Of course, the cover plate 2 can also adopt other structural forms, as long as it can realize the electrical connection between the cover plate 2 and the reflector plate 1, and form a receiving cavity between the cover plate 2 and the reflector plate 1 to accommodate the power supply network 3. 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 plate 1, making the assembly of the cover plate 2 and the reflector plate 1 more convenient.

[0072] In addition, the edge of the cover plate 2 can be supported by structural components, that is, structural components can be set between the edge of the cover plate 2 and the reflector plate 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 reflector 1. The radiation unit 4 has a feed plate 41, which passes through the first through hole 11 and is electrically connected to the feed network 3 to feed the radiation unit 4.

[0074] With this configuration, no cable connection is required between the radiating unit 4 and the feed network 3, which reduces cable loss, improves the efficiency of the base station antenna, and reduces the number of wiring and solder joints during production. This solves many problems caused by using cable connections, such as the need for wiring during production, the large number of solder joints, and the impact of cable loss on antenna efficiency. Furthermore, the feed network 3 is installed into the receiving cavity 12 from the back of the reflector 1. Since the radiating unit 4 is located on the front of the reflector 1, there is sufficient space on the back of the reflector 1 for the feed network 3 to be installed into the receiving cavity 12, making the assembly of the feed network 3 more convenient.

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

[0076] In some embodiments, refer to Figures 1 to 3 , Figures 12 to 14 As shown, the cover plate 2 extends along the first direction, and its two opposite sides form side openings 13 with the reflector plate 1, communicating with the receiving cavity 12. In other words, the receiving cavity 12 opens to both sides. (Refer to...) Figure 3 and Figure 14 As shown in the figure, the arrow in the figure indicates the first direction, which is the extension direction of the cover plate 2.

[0077] This configuration allows the power supply network 3 to be directly inserted into or removed from the receiving cavity 12 through the side opening 13, making the assembly and maintenance of the power supply network 3 more convenient and flexible. Furthermore, since the side opening 13 extends along the extension direction of the cover plate 2, i.e., it is a long opening extending along the extension direction of the cover plate 2, it facilitates the transverse insertion of the power supply network 3 into the receiving cavity 12 along the extension direction perpendicular to the long opening. The transverse insertion distance of the power supply network 3 is short, making insertion and disassembly more convenient.

[0078] For example, refer to Figure 2 and Figure 13 As shown, a base station antenna typically includes multiple radiating elements 4, which are sequentially arranged on a reflector 1 along a first direction. To facilitate the mounting of the multiple radiating elements 4 on the reflector 1, the reflector 1 is typically configured as a long, strip-shaped plate extending along the first direction. (Refer to...) Figure 3 and Figure 14 As shown, the cover plate 2 is configured as an elongated strip structure extending along a first direction. The first direction is the length direction of the cover plate 2, and the width direction of the cover plate 2 is perpendicular to the first direction. The two opposite sides of the cover plate 2 form side openings 13 that communicate with the receiving cavity 12 between the reflector plate 1 and the cover plate 2. In other words, the two opposite sides of the cover plate 2 along the width direction form side openings 13 that communicate with the receiving cavity 12 between the reflector plate 1 and the cover plate 2. The side openings 13 are formed on the long side of the cover plate 2. Therefore, the side openings 13 can also be called long side openings.

[0079] In practical implementation, the power supply network 3 can be directly installed into the receiving cavity 12 through the side opening 13, or the power supply network 3 can be directly removed from the receiving cavity 12 through the side opening 13, making the assembly and maintenance of the power supply network 3 more convenient and flexible. Specifically, when installing the power supply network 3, it can be directly installed into the receiving cavity 12 through the side opening 13. Specifically, the power supply network 3 can be inserted laterally into the receiving cavity 12 along the extension direction perpendicular to the long opening, with the insertion direction perpendicular to the side opening 13. Figure 3 As indicated by the arrow, the distance required for the horizontal insertion of the power supply network 3 is short, making insertion easier. When disassembling the power supply network 3, it can be directly removed from the side opening 13 of the receiving cavity 12. Specifically, the power supply network 3 can be pulled laterally out of the receiving cavity 12 along the extension direction perpendicular to the long opening, with the removal direction perpendicular to the direction shown by the arrow. Figure 3 As indicated by the arrow, the distance required to move the power supply network 3 laterally is shorter, making disassembly easier; this makes the assembly and maintenance of the power supply network 3 more convenient and flexible.

[0080] In some embodiments, refer to Figure 3 and Figure 14 As shown, the cover plate 2 extends along the first direction, and the two opposite ends of the cover plate 2 form end openings 14 that communicate with the receiving cavity 12 between the reflector plate 1 and the cover plate 2.

[0081] In other words, the cover plate 2 can be configured as a long strip structure extending along the first direction, the first direction being the length direction of the cover plate 2, and the width direction of the cover plate 2 being perpendicular to the first direction. The two opposite ends of the cover plate 2 respectively form end openings 14 that communicate with the receiving cavity 12 between the reflector plate 1. That is, the two opposite ends of the cover plate 2 along the length direction respectively form end openings 14 that communicate with the receiving cavity 12 between the reflector plate 1.

[0082] In specific implementation, the power supply network 3 can also be directly installed into the receiving cavity 12 from the end opening 14 of the receiving cavity 12, or the power supply network 3 can be directly removed from the end opening 14 of the receiving cavity 12, making the assembly and maintenance of the power supply network 3 more convenient and flexible.

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

[0084] In some embodiments, refer to Figure 3 , Figure 7 , Figure 14 and Figure 18 As shown, each radiating element 4 has two feed plates 41; the feeding network 3 includes two feeding sections, each of which is provided with an output port 30 corresponding one-to-one with the two feed plates 41 of each radiating element 4, and each feed plate 41 is electrically connected to its corresponding output port 30. In other words, each radiating element 4 has two feed plates 41; the feeding network 3 includes two feeding sections, one of which is provided with an output port 30 corresponding one-to-one with one feed plate 41 of each radiating element 4, and the other of which is provided with an output port 30 corresponding one-to-one with the other feed plate 41 of each radiating element 4, and each feed plate 41 is electrically connected to its corresponding output port 30.

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

[0086] In some embodiments, refer to Figure 2 and Figure 13 As shown, there are multiple radiating elements 4, and these multiple radiating elements 4 are sequentially arranged on the reflector 1 along the first direction. Each radiating element 4 has two feed plates 41. (Refer to...) Figure 3 and Figure 14 As shown, the power supply network 3 includes two power supply sections. Each power supply section is provided with a plurality of output ports 30 arranged sequentially along the first direction. The plurality of output ports 30 in one power supply section are respectively configured to correspond to one of the feed plates 41 of each of the plurality of radiating units 4. The plurality of output ports 30 in the other power supply section are respectively configured to correspond to another feed plate 41 of each of the plurality of radiating units 4.

[0087] For example, refer to Figure 2 and Figure 13 As shown, there are multiple radiation units 4, which are, in order, radiation unit 4a, radiation unit 4b, radiation unit 4c, radiation unit 4d, radiation unit 4e, and radiation unit 4f; (Refer to...) Figure 3 and Figure 14 As shown, one of the power supply sections is provided with multiple output ports 30 in sequence. The multiple output ports 30 are output port 30a, output port 30b, output port 30c, output port 30d, output port 30e, and output port 30f in sequence. A feed piece 41 of the radiation unit 4a is connected to the output port 30a, a feed piece 41 of the radiation unit 4b is connected to the output port 30b, a feed piece 41 of the radiation unit 4c is connected to the output port 30c, a feed piece 41 of the radiation unit 4d is connected to the output port 30d, a feed piece 41 of the radiation unit 4e is connected to the output port 30e, and a feed piece 41 of the radiation unit 4f is connected to the output port 30f.

[0088] In some embodiments, refer to Figure 1 and Figure 12 As shown, the power supply network 3 is mounted in the receiving cavity 12 via structural components, and the height of the power supply network 3 is located in the middle of the receiving cavity 12. This arrangement prevents the power supply network 3 from making conductive contact with the reflector 1 or the cover plate 2.

[0089] For example, the structural component may include a support block and a pressure block corresponding to the support block. The power supply network 3 is supported on the support block, and the pressure block presses onto the power supply network 3, thereby enabling the power supply network 3 to be installed in the receiving cavity 12. To improve the stability of the power supply network 3 installed in the receiving cavity 12, there may be multiple support blocks and corresponding pressure blocks, which are spaced apart along the extension direction of the cover plate 2 in the receiving cavity 12. Of course, the specific structure of the structural component is not limited to the above limitations and can be reasonably set according to the actual situation.

[0090] In some embodiments, refer to Figure 1 and Figure 12 As shown, the power supply network 3 includes a strip 31, a first dielectric 32 and a second dielectric 33. The first dielectric 32 and the second dielectric 33 are disposed on both sides of the strip 31 and are slidably connected to the strip 31.

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

[0092] Reference Figures 1 to 11 The diagram shown is a structural schematic of a base station antenna according to an embodiment of this 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 at an angle to the cover plate body 21. The connecting plate 22 is connected to the side of the cover plate body 21 facing the reflector plate 1. The connecting plate 22 is electrically connected to the reflector plate 1. A receiving cavity 12 is formed between the cover plate body 21 and the reflector plate 1. The connecting plate 22 divides the receiving cavity 12 into two sub-cavities.

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

[0095] Of course, the connecting plate 22 is not limited to being perpendicularly connected to the cover plate body 21. The angle between the two can also be different from 90 degrees, but a suitable angle close to 90 degrees, such as 85 degrees, 80 degrees, etc.

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

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

[0098] Of course, in practice, the cover plate 2 and the reflector plate 1 can also be integrally extruded. For example, the cover plate 2 and the reflector plate 1 can be integrally extruded from aluminum alloy. This eliminates the need to manufacture the cover plate 2 and the reflector plate 1 separately, making manufacturing and assembly simpler and more efficient. Of course, the cover plate 2 and the reflector plate 1 can also be integrally extruded from other metal parts. Furthermore, the cover plate 2 and the reflector plate 1 are not limited to integral extrusion molding; they can also be integrally molded using other processing methods, such as integral die casting.

[0099] Specifically, refer to Figure 3 , Figure 7 , Figures 9 to 11 As shown, the power supply network 3 includes two power supply sections, which are located in two sub-cavities respectively. Each power supply section is provided with an output port 30. Each radiation unit 4 has two power supply plates 41, and the two power supply plates 41 of each radiation unit 4 are electrically connected to the output ports 30 of the two power supply sections respectively.

[0100] In a specific implementation, the two feeding sections of the feeding network 3 can be inserted into the receiving cavity 12 from the side openings 13 of the two sub-cavities, or they can be inserted into the receiving cavity 12 from the end openings 14 of the two sub-cavities. The two feeding plates 41 of each radiating unit 4 pass through the reflector 1 and are electrically connected to the output ports 30 of the two feeding sections, respectively. Specifically, the feeding plates 41 can be welded to the output ports 30.

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

[0102] Specifically, refer to Figure 1 As shown, the power supply network 3 is mounted in the middle of the receiving cavity 12 via structural components. A dielectric block is disposed in the receiving cavity 12, and the dielectric block is slidably connected to the wire 31 of the power supply network 3. The sliding of the dielectric block changes the equivalent dielectric constant around the power supply network 3, thereby changing the electrical length of the power supply network 3, thus realizing the phase shifting function.

[0103] In specific implementation, refer to Figure 1 As shown, the power supply network 3 includes a strip 31, a first dielectric 32, and a second dielectric 33. The first dielectric 32 and the second dielectric 33 are disposed on both sides of the strip 31 and are slidably connected to the strip 31. The first dielectric 32 and the second dielectric 33 can cover part of the strip 31. By moving the first dielectric 32 and / or the second dielectric 33, the dielectric coverage area of ​​the strip 31 can be changed, thereby changing the equivalent dielectric constant and causing a phase change in the power supply network, thus realizing the phase shift function.

[0104] Reference Figures 12 to 22 The diagram shown is a structural schematic of a base station antenna according to some other embodiments of this application. In this embodiment, the cover plate 2 is a bent structure, specifically, the cover plate 2 is a Z-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 connected at an angle to the two opposite sides of the first cover plate portion 24, and the two second cover plate portions 26 are connected at an angle to the two connecting plate portions 25, and extend away from each other relative to the first cover plate portion 24. The first cover plate portion 24 protrudes towards the reflector plate 1 relative to the two second cover plate portions 26 and is electrically connected to the reflector plate 1. A receiving cavity 12 is formed between the two second cover portions 26 and the reflector plate 1, and the two connecting plate portions 25 divide the receiving cavity 12 into two sub-cavities.

[0106] In a specific implementation, the two connecting plate portions 25 can be perpendicularly connected 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. The two second cover plate portions 26 are perpendicularly connected to the two connecting plate portions 25, and extend 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 constructed into a Z-shaped structure, wherein the first cover plate portion 24 is formed as the top end face of the Z-shaped structure. Of course, in a specific implementation, the connecting plate portions 25 are not limited to being perpendicularly connected to the first cover plate portion 24, and the two second cover plate portions 26 are not limited to being perpendicularly connected to the two connecting plate portions 25. The two can have a suitable included angle that is not equal to 90 degrees, such as 85 degrees, 80 degrees, etc.

[0107] In practice, the cover plate 2 can be manufactured using sheet metal bending, sheet metal stamping, sheet metal pultrusion, or other processes.

[0108] When the cover plate 2 is assembled with the reflector plate 1, the first cover plate portion 24 is located on the side of the two second cover plate portions 26 facing the reflector plate 1, and the first cover plate portion 24 protrudes towards the reflector plate 1 relative to the two second cover plate portions 26. The first cover plate portion 24 is formed as the top end face of the Z-shaped cover plate. The first cover plate portion 24 is connected to the middle part of the reflector plate 1 along the width direction. The two second cover plate portions 26 are arranged parallel to the reflector plate 1. A receiving cavity 12 with openings on both sides is formed between the two second cover plate portions 26 and the reflector plate 1. The two connecting plate portions 25 divide the receiving cavity 12 into two sub-cavities.

[0109] In practice, the radiation unit 4 can be electrically connected to the reflector 1 by welding, screws, or coupling; the cover plate 2 can be electrically connected to the reflector 1 by screw connection, riveting connection, welding connection, or coupling connection.

[0110] Specifically, refer to Figure 14 , Figure 18 , Figures 20 to 22 As shown, the power supply network 3 includes two power supply sections, which are located in two sub-cavities respectively. Each power supply section is provided with an output port 30. Each radiation unit 4 has two power supply plates 41, and the two power supply plates 41 of each radiation unit 4 are electrically connected to the output ports 30 of the two power supply sections respectively.

[0111] In a specific implementation, the two feeding parts of the feeding network 3 can be inserted into the receiving cavity 12 from the side openings 13 of the two sub-cavities, or they can be inserted into the receiving cavity 12 from the end openings 14 of the two sub-cavities. The two feeding plates 41 of the radiating unit 4 pass through the reflector 1 and are electrically connected to the output ports 30 of the two feeding parts respectively. Specifically, the feeding plates 41 can be welded to the output ports 30.

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

[0113] Specifically, refer to Figure 14 , Figure 15 and Figure 19 As shown, the first cover plate 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 24 is electrically connected to the reflector 1 by screws. That is, the feed network 3 can be installed first, and the feed plate 41 of the radiating unit 4 can be electrically connected to the feed network 3 before the cover plate 2 is installed. Because the feed plate 41 of the radiating unit 4 can be electrically connected to the feed network 3 before the cover plate 2 is installed, the cover plate 2 does not need to have holes. That is, no holes are needed at the location on the cover plate 2 corresponding to the output port 30 of the feed network 3, making the performance of the feed network 3 more stable and consistent. Of course, in specific implementations, holes can also be made on the cover plate 2 at the location corresponding to the output port 30 of the feed network 3 to facilitate inspection of solder joints and debugging.

[0114] Of course, in specific implementations, the first cover plate 24 can be electrically connected to the reflector 1 by screws before the feed plate 41 is electrically connected to the feed network 3. That is, the cover plate 2 can be installed first, and then the feed network 3 can be installed, and the feed plate 41 of the radiating unit 4 can be electrically connected to the feed network 3. In this embodiment, a hole is made on the cover plate 2 at the part corresponding to the output port 30 of the feed network 3, so that the feed plate 41 of the radiating 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, refer to Figures 14 to 17As shown, at least one of the first cover plate portion 24 and the connecting plate portion 25 is provided with a clearance notch 27 corresponding to the feed piece 41; that is, when the width of the first cover plate portion 24 is greater than the distance between the two feed pieces 41 of the radiating unit 4, after the two feed pieces 41 pass through the first through hole 11 corresponding to the reflector plate 1, they will interfere with the first cover plate portion 24 and / or the connecting plate portion 25 of the cover plate 2. At this time, it is necessary to open a clearance notch 27 on the first cover plate portion 24 and / or the connecting plate portion 25 to provide installation space for the feed piece 41 and the output port 30 of the feed network 3.

[0116] Of course, in specific implementations, the feed plate 41 can also be arranged to avoid the first cover plate portion 24 and the connecting plate portion 25. That is, the distance between the two feed plates 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 feed plate 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 the avoidance notch 27 on the first cover plate portion 24 and / or the connecting plate portion 25.

[0117] Specifically, the power supply network 3 includes two power supply sections, which are located in two sub-cavities respectively, and each power supply section is provided with an output port 30; each radiation unit 4 has two power supply plates 41, and the two power supply plates 41 of each radiation unit 4 are electrically connected to the output ports 30 of the two power supply sections respectively.

[0118] In a specific implementation, the two feeding parts of the power supply network 3 can be installed into the receiving cavity 12 from the side openings 13 of the two sub-cavities respectively. Alternatively, the two feeding parts of the power supply network 3 can be electrically connected to the corresponding feeding plates 41 first, and then the cover plate 2 can be installed on the reflector plate 1.

[0119] Specifically, refer to Figure 12 As shown, the power supply network 3 is mounted in the middle of the receiving cavity 12 via structural components. A dielectric block is disposed in the receiving cavity 12, and the dielectric block is slidably connected to the wire 31 of the power supply network 3. The sliding of the dielectric block changes the equivalent dielectric constant around the power supply network 3, thereby changing the electrical length of the power supply network 3, thus realizing the phase shifting function.

[0120] In specific implementation, refer to Figure 12 As shown, the power supply network 3 includes a strip 31, a first dielectric 32, and a second dielectric 33. The first dielectric 32 and the second dielectric 33 are disposed on both sides of the strip 31 and are slidably connected to the strip 31. The first dielectric 32 and the second dielectric 33 can cover part of the strip 31. By moving the first dielectric 32 and / or the second dielectric 33, the dielectric coverage area of ​​the strip 31 can be changed, thereby changing the equivalent dielectric constant and causing a phase change in the power supply network, thus realizing the phase shift function.

[0121] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0122] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A base station antenna, characterized in that, include: A reflector having a first surface and a second surface opposite to each other, and a first through hole is provided on the reflector through the first surface and the second surface of the reflector. A cover plate is disposed on the second surface of the reflector and electrically connected to the reflector. A receiving cavity is formed between the cover plate and the reflector. The cover plate extends along a first direction, and two opposite sides of the cover plate form side openings communicating with the receiving cavity between them and the reflector. A power supply network is disposed within the receiving cavity; A radiating unit is disposed on the first surface of the reflector, the radiating unit having a feed plate that passes through the first through hole and is electrically connected to the feed network.

2. The base station antenna according to claim 1, characterized in that, The two opposite ends of the cover plate form end openings that communicate with the receiving cavity between the reflector plate and the cover plate.

3. The base station antenna according to claim 1, characterized in that, Each of the radiating elements has two of the feed plates; The power supply network includes two power supply sections. One of the two power supply sections is provided with an output port corresponding to one of the power supply segments of each of the radiating elements. The other of the two power supply sections is provided with an output port corresponding to the other power supply segment of each of the radiating elements. Each power supply segment 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 includes a cover plate body and a connecting plate that is connected to the cover plate body at an angle; The connecting plate is connected to the side of the cover plate body facing the reflector and is electrically connected to the reflector. The receiving cavity is formed between the cover plate body and the reflector, and the connecting plate divides the receiving cavity into two sub-cavities.

5. The base station antenna according to claim 4, characterized in that, The power supply network includes two power supply sections, which are located in the two sub-cavities respectively, and each power supply section is provided with an output port; Each of the radiating elements has two feed plates, and the two feed plates of each radiating element are electrically connected to the output ports of the two feed sections respectively.

6. The base station antenna according to claim 4, characterized in that, The connecting plate is welded to or coupled to the reflector. And / or, the cover plate body is provided with a second through hole corresponding to the output port of the power supply network, so as to expose the welding point between the power supply piece and the power supply network 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 Z-shaped bent plate, which includes a first cover plate part, two connecting plate parts and two second cover plate parts. The two connecting plate parts are respectively connected to the two opposite sides of the first cover plate part at an angle, and the two second cover plate parts are respectively connected to the two connecting plate parts at an angle, and extend away from each other relative to the first cover plate part. 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 receiving cavity is formed between the two second cover plate portions and the reflector. The two connecting plate portions divide the receiving cavity into two sub-cavities.

9. The base station antenna according to claim 8, characterized in that, The power supply network includes two power supply sections, which are located in the two sub-cavities respectively, and each power supply section is provided with an output port; Each of the radiating elements has two feed plates, and the two feed plates of each radiating element are electrically connected to the output ports of the two feed sections respectively.

10. The base station antenna according to claim 8, characterized in that, The first cover plate is electrically connected to the reflector plate by screws, riveting, welding, or coupling. Wherein, when the first cover plate is electrically connected to the reflector screw, the power supply plate is electrically connected to the power supply network before the first cover plate is electrically connected to the reflector screw, or the first cover plate is electrically connected to the reflector screw before the power supply plate is electrically connected to the power supply 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 power supply piece; Alternatively, the power supply plate may be disposed 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 power supply network is installed in the receiving cavity through structural components, and the height of the power supply network is located in the middle of the receiving cavity.

13. The base station antenna according to any one of claims 1 to 11, characterized in that, The power supply network includes a strip, a first medium, and a second medium. The first medium and the second medium are disposed on both sides of the strip and are slidably connected to the strip.

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