Active antenna unit and housing thereof

Abstract

The present application discloses an active antenna unit and its shell. The shell includes a base and a reinforcing plate, wherein a plurality of heat sinks are arranged at intervals on the first surface of the base, and a reinforcing plate is arranged on the second surface of the base along the direction of the intervals between the plurality of heat sinks, wherein the first surface and the second surface are arranged opposite to each other. The first surface of the base of the shell of the present application is provided with a plurality of heat sinks, which can increase the strength of the base along the direction of the heat sinks, and the second surface is provided with a reinforcing plate along the direction of the intervals between the plurality of heat sinks, which can increase the strength of the base along the direction perpendicular to the heat sinks, so that the strength of the base is significantly improved, and the reliability and other performance of the active antenna unit can be improved.

Description

Technical Field

[0001] The present application relates to the field of radio frequency technology, and in particular to an active antenna unit (Active Antenna Unit, AAU) and a housing thereof. Background Art

[0002] With the rapid development of mobile communication technology, especially the upcoming 5G communication, more stringent technical requirements are put forward for the entire communication system architecture, that is, to achieve efficient, fast, and large-capacity communication, the system modules must be highly integrated, miniaturized, lightweight, and low-cost. Antennas are important components of the communication system, and their performance plays a vital role in the overall performance of the base station system.

[0003] The inventors of the present application have discovered during a long period of research and development that the heat dissipation housing of the existing active antenna unit has relatively low strength. Summary of the invention

[0004] The present application provides an active antenna unit and a housing thereof to solve the above-mentioned problems.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a shell of an active antenna unit, the shell comprising a base and a reinforcement plate, a first surface of the base being provided with a plurality of heat sinks at intervals, and a second surface of the base being provided with the reinforcement plate along the spacing direction of the plurality of heat sinks, wherein the first surface and the second surface are arranged opposite to each other.

[0006] In order to solve the above technical problems, another technical solution adopted in the present application is: to provide an active antenna unit, the active antenna unit comprising: the above-mentioned shell, the shell forming a accommodating cavity; a base station antenna, arranged in the accommodating cavity; a filter assembly, arranged in the accommodating cavity, and the base station antenna cover is arranged above the filter assembly; a power amplifier assembly, arranged in the accommodating cavity, and the power amplifier assembly is arranged on the side of the filter assembly away from the base station antenna; the base station antenna is used to receive or transmit radio frequency signals, the filter assembly is used to filter the radio frequency signals, and the power amplifier assembly is used to amplify the power of the radio frequency signals.

[0007] The beneficial effects of the embodiment of the present application are as follows: Different from the prior art, the shell of the active antenna unit of the embodiment of the present application includes a base and a reinforcing plate, a plurality of heat sinks are arranged at intervals on the first surface of the base, and a reinforcing plate is arranged on the second surface of the base along the direction of the intervals between the plurality of heat sinks, wherein the first surface and the second surface are arranged opposite to each other. The first surface of the base of the embodiment of the present application is provided with a plurality of heat sinks, which can increase the strength of the base along the direction of the heat sinks, and the second surface is provided with a reinforcing plate along the direction of the intervals between the plurality of heat sinks, which can increase the strength of the base along the direction perpendicular to the heat sinks, so that the strength of the base is significantly improved, and the reliability and other performance of the active antenna unit can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0009] Figure 1 It is a structural schematic diagram of an embodiment of an active antenna unit of the present application;

[0010] Figure 2 yes Figure 1 A schematic diagram of the disassembled structure of the active antenna unit housing of the embodiment;

[0011] Figure 3 yes Figure 1 A schematic diagram of the disassembled structure of the active antenna unit of the embodiment;

[0012] Figure 4 is a schematic diagram of an interface of a reinforcing plate along a heat sink spacing direction in another embodiment of an active antenna unit of an embodiment of the present application;

[0013] Figure 5 yes Figure 3 A schematic diagram of the structure of a base station antenna in an embodiment;

[0014] Figure 6 yes Figure 3 A schematic diagram of the structure of the filter component close to the power amplifier component;

[0015] Figure 7 yes Figure 3 A schematic diagram of the structure of the filter component facing away from the power amplifier component;

[0016] Figure 8 yes Figure 5 Schematic diagram of the cross section of the base station antenna along line II;

[0017] Fig. 9is a cross-sectional schematic diagram of another embodiment of the base station antenna of the present application;

[0018] Fig.10 is a cross-sectional schematic diagram of another embodiment of the base station antenna of the present application;

[0019] Fig.11 is a structural schematic diagram of another embodiment of the active antenna unit of the present application;

[0020] Fig.12 yes Figure 1 A schematic structural diagram of an antenna rack according to an embodiment of the present invention;

[0021] Fig.13 yes Fig.11 A schematic diagram of the structure of the handle in the active antenna unit;

[0022] Fig.14 yes Fig.13 A schematic top view of the handle;

[0023] Fig.15 yes Figure 2 An enlarged schematic diagram of a partial structure of a housing of an embodiment. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0025] The terms "first" and "second" in this application are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically limited. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0026] The active antenna unit of the present application is not an antenna in the traditional sense. It organically combines the RF subsystem (such as the filter component and power amplifier component of the present application) and the base station antenna; that is, the active antenna unit digitizes the feeding network of the traditional antenna. The RF unit and antenna of the traditional base station are designed separately, while the active antenna unit integrates the active RF unit (filter component, power amplifier component) and the antenna (base station antenna) into one design. The active antenna unit integrates the remote radio unit (RRU) unit and the antenna into one design so that the power amplification and reception of the RRU unit can be fully utilized. The active antenna unit of the present application integrates the RRU unit and the antenna in a radome, and provides an RF port to the outside, which is used to send RF signals to the external vector network analyzer.

[0027] This application first proposes an active antenna unit, such as Figures 1 to 3 As shown, the active antenna unit 50 of this embodiment includes a shell 51, wherein the shell 51 includes a base 510 and a reinforcing plate 520, a first surface of the base 510 is provided with a plurality of heat sinks 511 at intervals, a second surface of the base 510 is provided with a reinforcing plate 520 along the spacing direction of the plurality of heat sinks 511, wherein the first surface is arranged opposite to the second surface.

[0028] In the present embodiment, a first surface of the base 510 is provided with a plurality of heat sinks 511, which can increase the strength of the base 510 along the direction of the heat sinks 511. At the same time, a reinforcing plate 520 is provided on the second surface along the spacing direction of the plurality of heat sinks 511, which can increase the strength of the base 510 along the direction perpendicular to the heat sinks 511. The strength of the base 510 is significantly improved, and the reliability and other performance of the active antenna unit 50 can be improved.

[0029] The base 510 and the heat sink 511 are integrally formed by extrusion.

[0030] The heat sink 511 is vertically arranged with respect to the base 510. The surface of the base 510 may also be provided with protrusions or grooves to increase the heat dissipation area and the heat dissipation effect of the base 510.

[0031] The heat sink 511 may be a sheet with good thermal conductivity such as a copper sheet or an aluminum sheet.

[0032] The reinforcing plate 520 and the base 510 are fixed by friction stir welding, which can reduce the thermal influence of the welding joint on the welding point, reduce the residual stress, and prevent the base 510 from being deformed. It can also improve the level of welding automation and reduce pollution.

[0033] Of course, in other embodiments, the reinforcing plate 520 and the base 510 may be connected by structures such as screws or buckles, and a sealing treatment may be performed at the connection between the reinforcing plate 520 and the base 510 to increase the sealing effect.

[0034] The reinforcing plate 520 is made of metal sheet.

[0035] Optionally, the housing 51 of this embodiment further includes an upper cover 530 , which is buckled and connected with the base 510 and the reinforcing plate 520 to form a receiving cavity (not shown). The upper cover 530 is used to make the active antenna unit 50 dustproof and waterproof.

[0036] The upper cover 530 may be made of a plastic material, including one or more of PE (Polyethylene), PP (Polypropylene), PVC (Polyvinyl Chloride), PET (Polyethylene Terephthalate), PS (Polystyrene), PA (Polyamide), PPS (Polyphenylenesulfide), PC (Polycarbonates) or PI (Polyimide Film). In other embodiments, the upper cover 530 may also be made of fiberglass, which not only has strong corrosion resistance and impact resistance, but also can beautify the surface and has strong electromagnetic penetration.

[0037] Optionally, the upper cover body 530 of this embodiment includes an upper cover plate 531 and two first side walls 532 bent from the upper cover plate 531 toward the base 510, the first side walls 532 are arranged along the length direction of the heat sink 511, and the two first side walls 532 are respectively snap-connected with two oppositely arranged side edges of the base 510.

[0038] Optionally, the upper cover body 530 also includes a second side wall 533 bent from the upper cover plate 531 toward the base 510 , the second side wall 533 is arranged along the spacing direction of the multiple heat sinks 511 , the second side wall connects the two first side walls 532 , and the second side wall 533 is snap-fitted and connected to the reinforcing plate 520 .

[0039] The upper cover 530 of this embodiment is integrally formed by an extrusion process, which does not require cutting and grinding processes, etc., compared with the existing forming process, so there is no waste of materials and the manufacturing process can be simplified. Therefore, the manufacturing of the housing can be simplified and the production cost can be saved.

[0040] Specifically, the two first side walls 532 are respectively snap-fitted with the opposite side edges of the base 510 along the length direction of the heat sink 511, and the second side wall 533 is snap-fitted with the reinforcing plate 520 arranged on the base 510 along the spacing direction of the heat sink 511, that is, perpendicular to the direction of the heat sink 511.

[0041] Furthermore, we will participate Figures 1 to 3 , Fig.15 The end surface of the second side wall 533 close to the reinforcing plate 520 is provided with a first fixing hole 534, and the end surface of the reinforcing plate 520 close to the second side wall 533 is provided with a second fixing hole 522. The first fixing hole 534 cooperates with the second fixing hole 522 to achieve the fixation of the second side wall 533 and the reinforcing plate 520. The size of the end surface of the reinforcing plate 520 close to the second side wall 533 is larger than the thickness of the reinforcing plate 520 body, so as to facilitate the setting of the second fixing hole 522 and increase the volume of the accommodating cavity.

[0042] Specifically, plug-in components such as screws may be disposed in the first fixing hole 534 and the second fixing hole 522 to achieve fixation of the second side wall 533 and the reinforcing plate 520 .

[0043] The upper cover body 530 of this embodiment is provided with a second side wall 533, so that the reinforcing plate 520 abuts against the second side wall 533 (the two are in the same plane), rather than directly abutting the reinforcing plate 520 against the upper cover plate 531 (the two are not in the same plane), which can improve the stability between the reinforcing plate 520 and the second side wall 533.

[0044] Of course, in other embodiments, the reinforcing plate may also directly abut against the upper cover plate, that is, the upper cover body is not provided with a second side wall. In this case, a reinforcing frame or other structure may be provided at the connection between the reinforcing plate and the upper cover plate to increase the stability between the two.

[0045] The shell 50 of this embodiment includes two reinforcing plates 520, which are respectively located on the opposite sides of the base 510 along the length direction of the heat sink 511; the reinforcing plates 520 are respectively snap-connected with the opposite sides of the base 510 along the direction of the heat sink 511.

[0046] Among them, the reinforcing plate 520 of this embodiment is arranged in a trapezoidal shape, and a chamfered structure is arranged at the corner of the reinforcing plate 520. This structure is conducive to the knife operation and knife removal during the friction welding between the reinforcing plate 520 and the second side wall 533.

[0047] The connection and fixation between each side wall of the upper cover body of the present application and the reinforcing plate or the base can be carried out by adopting the connection structure between the second side wall and the reinforcing plate.

[0048] Optionally, the second side wall 533 of the upper cover 530 of this embodiment is provided with a through hole 535 for arranging a circuit of the active antenna unit 50. The circuit may include a power line and a signal line of the active antenna unit 50, and the like.

[0049] Of course, in other embodiments, the through hole may also be provided on the reinforcing plate.

[0050] In another embodiment, if Figure 4 As shown, Figure 4 1 is a schematic diagram of an interface of a reinforcing plate along the spacing direction of the heat sink in another embodiment of the active antenna unit of the present application. In this embodiment, a sealing groove 515 is further provided on the end surface of the reinforcing plate 520 close to the second side wall 533, and the active antenna unit 50 includes a sealing member embedded in the sealing groove 515, such as a waterproof rubber strip.

[0051] The sealing groove 515 includes a first groove section 516 extending along the heat sink spacing direction D1 and located on both sides of the second fixing hole 522, and a second groove section 517 arranged around the periphery of the second fixing hole 522 and connecting the two adjacent first groove sections 516. The second groove section 517 can be located on the side of the second fixing hole 522 close to the accommodating cavity, that is, the second fixing hole 522 is located on the outside of the sealing groove 515, which can improve the waterproofness of the active antenna unit 50.

[0052] The first slot section 516 is arranged in a straight line, and the second slot section 517 is arranged in an arc shape. The extension line of the center line 518 of the first slot section 516 can pass through the center of the second fixing hole 522, so that the end surface of the reinforcing plate 520 close to the second side wall 533 is subjected to balanced force.

[0053] In this embodiment, an arc-shaped second groove section 517 and a first assembly hole 514 are provided between each first groove section 516 of the end face of the reinforcing plate 520 close to the second side wall 533. Compared with a continuous whole straight groove section provided in the end face, it is equivalent to dividing the whole straight groove section into a plurality of shorter first groove sections 516, so that the seal buried in the sealing groove 515 is subjected to more uniform force, has stronger fixation and better waterproof performance.

[0054] The above-mentioned accommodating cavity is used to accommodate internal components (not shown) of the active antenna unit 50, such as antenna vibrator and feeding circuit, etc. The shell 51 can protect the internal components and prevent foreign objects such as rain and dust from damaging the internal components.

[0055] like Figure 3As shown, the active antenna unit 50 of this embodiment further includes a base station antenna 10, a filter component 20, and a power amplifier component 56, wherein the base station antenna 10 is arranged in the accommodating cavity, the filter component 20 is arranged in the accommodating cavity, and the base station antenna 10 is covered on the top of the filter component 20, the power amplifier component 56 is arranged in the accommodating cavity, and the power amplifier component 56 is arranged on the side of the filter component 20 away from the base station antenna 10; the base station antenna 10 is used to receive or transmit radio frequency signals, the filter component 20 is used to filter the radio frequency signals, and the power amplifier component 56 is used to amplify the power of the radio frequency signals.

[0056] like Figure 5 As shown, the base station antenna 10 includes an antenna substrate 11 and a plurality of antenna elements 12 arranged in an array on a first main surface 111 of the antenna substrate 11 .

[0057] Multiple antenna elements 12 are arranged in an array on the first main surface 111 of the antenna substrate 11, and the array may include a circular array or a rectangular array; each antenna element 12 is arranged in a sheet shape and attached to the first main surface 111, and the shape of the antenna element 12 may be rectangular, square or polygonal.

[0058] Among them, the antenna vibrator 12 can be attached to the first main surface 111 by hot stamping, printing, coating, electroplating or pasting; since the antenna vibrator 12 is attached to the first main surface 111, compared with the base station antenna in the prior art, the height of the antenna vibrator 12 relative to the antenna substrate 11 is reduced, which can effectively reduce the volume of the base station antenna 10.

[0059] The assembly process of the base station antenna 10 may include: preparing an antenna substrate 11 of a preset size using insulating material; attaching the antenna element 12 to a preset position of the first main surface 111 to obtain the above-mentioned base station antenna 10 .

[0060] The base station antenna 10 of this embodiment includes an antenna substrate 11 made of insulating material and a plurality of antenna elements 12. No additional buckles are required, which reduces components and reduces costs. In addition, the assembly process of the base station antenna 10 is simple, which improves production efficiency.

[0061] In other embodiments, the base station antenna 10 may be integrated with the upper cover body 530 , and the antenna substrate 11 may be replaced by the upper cover plate 531 of the upper cover body 530 to improve integration.

[0062] The filter assembly 20 is disposed above the power amplifier assembly 56 and the power board 555 to provide electromagnetic shielding for the power amplifier assembly 56. The power board 555 is used to supply power to the active antenna unit 50, and the power board 555 and the power amplifier assembly 56 can be disposed on the same circuit board; in other embodiments, the power board and the power amplifier assembly can be disposed at intervals.

[0063] In other embodiments, the active antenna unit 50 may not be provided with a power board.

[0064] Among them, the power amplifier component 56 is electrically connected to the filter component 20, the power amplifier component 56 is used to amplify the power of the RF signal and transmit the amplified RF signal to the filter component 20, and the filter component 20 is used to obtain a RF signal of a specific frequency or a RF signal other than a specific frequency from the amplified RF signal.

[0065] Different from the prior art, this embodiment can achieve electromagnetic shielding of the power amplifier component through the filter component without the need to additionally install a shielding cover, thereby simplifying the installation process of the active antenna unit.

[0066] The power amplifier assembly 56 dissipates heat through the base 510 and the heat sink 511 .

[0067] like Figure 6 As shown, the filter assembly 20 of the present application is provided with a partition assembly 23 protruding from one side close to the power amplifier assembly 56 , and the partition assembly 23 is used to form a avoidance groove 24 , and the avoidance groove 24 is used to accommodate components on the power amplifier assembly 56 .

[0068] The partition assembly 23 can be integrally formed with the filter assembly 20; the partition assembly 23 can be formed by stamping, CNC or injection molding.

[0069] Among them, the partition assembly 23 includes a first partition 231 arranged on the outer periphery of one side of the filter assembly 20 close to the power amplifier assembly 56 and a plurality of second partitions 232 and a third partition 233 arranged in the first partition 231; the outer surface of the first partition 231 is flush with the side of the filter assembly 20, the inner surface of the first partition 231 is connected to the second partition 232 and the third partition 233, the third partition 233 is evenly divided and perpendicular to the second partition 232, and the third partition 233 is perpendicular to one side of the first partition 231, so that the formed avoidance groove 24 is arranged in a rectangular shape.

[0070] In other embodiments, the shape of the avoidance groove 24 formed by the partition assembly 23 can also be elliptical, hexagonal, etc.; and it is not limited whether the shape of each avoidance groove 24 is the same. The specific shape of the avoidance groove 24 is related to the layout of the components on the power amplifier assembly 56, and the avoidance groove 24 should be able to accommodate the components on the power amplifier board 56.

[0071] The first partition plate 231 , the second partition plate 232 and the third partition plate 233 are flush with one end surface close to the power amplifier component 56 , so that the filter component 20 can be stably installed on the power amplifier component 56 , which can reduce the electromagnetic leakage of the power amplifier component 56 and improve the electromagnetic shielding performance of the power amplifier component 56 .

[0072] The filter assembly 20 of this embodiment includes 4 groups of filter assemblies 20, each group of filter assemblies 20 includes 16 filter units 22 arranged in two rows, and the partition assembly 23 forms 16 avoidance grooves 24 on the side of the filter assembly 20 close to the power amplifier assembly 56 to accommodate the components on the power amplifier assembly and the power board respectively.

[0073] Furthermore, the base station antenna 10 is covered on top of the filter assembly 20, and the antenna element (not shown) of the base station antenna 10 is electrically connected to the filter unit 22 of the filter assembly 20, so as to transmit the radio frequency signal filtered by the filter unit 22, or to receive the radio frequency signal and transmit it to the filter unit 22 for clutter filtering.

[0074] The filter unit 22 is a cavity filter, and a plurality of cavity filters share a substrate (not shown). The substrate is a metal substrate, and the metal may be copper, aluminum or other metals, or alloys.

[0075] like Figure 7 As shown, the filter unit 22 includes a plurality of cascaded open-end resonant cavities 221, in which a resonant rod (not shown) and a tuning screw (not shown) are provided, and each resonant cavity 221 and the resonant rod and the tuning screw in its cavity form a resonator; the two cascaded resonant cavities 221 are connected by a window (not shown), and the two cascaded resonant cavities 221 transmit signals through the window; the first-stage resonant cavity 221 and the last-stage resonant cavity 221 are arranged at the edge to facilitate connection with the input and output ports 222.

[0076] The filter unit 22 of this embodiment is provided with 10 resonant cavities 221 , which are arranged in three rows or three columns, and the resonant cavities 221 in each row or column are arranged alternately with the resonant cavities 221 in adjacent rows or columns.

[0077] The filter assembly 20 of this embodiment includes four substrates. The filter units 22 on each substrate are arranged in two rows or two columns. The resonant cavities 221 of the filter units 22 in each row or column are arranged in the same manner.

[0078] Of course, in other embodiments, the number of substrates is not limited; the number of filter units 22 on the substrate is not limited; the number and arrangement of resonant cavities 221 in the filter unit 22 is not limited; whether the structures of multiple filter units 22 are the same is not limited, etc.

[0079] The opening of the resonant cavity 221 faces the base station antenna 10 .

[0080] Among them, the filter unit 22 of this embodiment includes one filter channel to realize unidirectional transmission of signals. In other embodiments, the filter unit 22 can also be replaced with a filter unit including a signal receiving channel and a signal transmitting channel, so that one filter unit 22 can simultaneously realize signal transmission and reception. Of course, multiple filter channels can also be set in one filter unit 22, and the resonator in the filter unit 22 can be divided into multiple channels to form multiple filter channels, and then a common cavity is used to connect the multiple filter channels, and so on.

[0081] Different from the prior art, the active antenna unit 50 used for the base station in this embodiment integrates the filter component 20 and the base station antenna 10 into the shell 51, which can improve the integration of the active antenna unit 50 and meet the integration requirements of the 5G communication system.

[0082] The existing base station antenna needs to install the clip on the antenna substrate through an assembly process, and then install the antenna vibrator on the clip. The assembly process is complicated, the base station antenna has many components, and the cost is high.

[0083] The antenna substrate 11 of the present application is made of insulating material, and the insulating material may include one or more of plastic material, inorganic material, aluminum oxide, magnesium oxide, aluminum hydroxide, silicon dioxide or carbon fiber.

[0084] like Figure 8 As shown, the base station antenna 10 of this embodiment may further include a reflective layer 13, and the reflective layer 13 is attached to the second main surface 112 of the antenna substrate 11, which is arranged opposite to the first main surface 111, that is, the reflective layer 13 may be attached to the second main surface 112 by hot stamping, printing, coating, electroplating or pasting, and the second main surface 112 is arranged opposite to the first main surface 111. The material of the reflective layer 13 may include one or more of silver, copper, aluminum, gold, iron, chromium, manganese or titanium; specifically, the material of the reflective layer 13 of this embodiment is aluminum.

[0085] Among them, the distance between the antenna vibrator 12 and the reflective layer 13 can be one-eighth wavelength of the center frequency of the base station antenna 10; this one-eighth wavelength is a theoretical value, and the actual distance between the antenna vibrator 12 and the reflective layer 13 can be around one-eighth wavelength, which can meet the corresponding radiation performance.

[0086] The reflective layer 13 is used to focus the antenna signal on the corresponding antenna element 12 to enhance the receiving capability of the base station antenna 10; the reflective layer 13 can also be used to block or shield the interference signal located on the back of the antenna substrate 11 to prevent the base station antenna 10 from being interfered when receiving the antenna signal.

[0087] The antenna substrate 11 may be made of a plastic material, including one or more of PE (Polyethylene), PP (Polypropylene), PVC (Polyvinyl Chloride), PET (Polyethylene Terephthalate), PS (Polystyrene), PA (Polyamide), PPS (Polyphenylenesulfide), PC (Polycarbonates) or PI (Polyimide Film). The antenna element 12 is made of a metal material, including one or more of silver, copper, aluminum, gold, iron, chromium, manganese or titanium.

[0088] See also Fig. 9 As shown, the base station antenna 10 of this embodiment may not be provided with the reflective layer 13 disclosed in the second embodiment; the base station antenna 10 further includes a plurality of antenna ports 14 whose number is equal to the antenna element 12, that is, the number of the plurality of antenna ports 14 is the same as the number of the plurality of antenna elements 12; each antenna port 14 is respectively connected to the corresponding antenna element 12.

[0089] In other embodiments, the number of multiple antenna ports 14 may be proportional to the number of multiple antenna elements 12 . For example, the ratio of the number of multiple antenna ports 14 to the number of multiple antenna elements 12 is 1:3, that is, three antenna elements 12 are connected to one antenna port 14 .

[0090] A plurality of antenna ports 14 may be disposed on the second main surface 112, and the projection of the antenna port 14 on the first main surface 111 may at least partially overlap with the antenna vibrator 12; in this embodiment, the projection of the antenna port 14 on the first main surface 111 completely overlaps with the antenna vibrator 12. The antenna substrate 11 is provided with a plurality of through holes 113 corresponding to the number of the antenna ports 14, that is, the number of the plurality of through holes 113 is the same as the number of the plurality of antenna ports 14; the through holes 113 connect the first main surface 111 and the second main surface 112 of the antenna substrate 11.

[0091] The base station antenna 10 further includes a plurality of conductive columns 114 corresponding to the through holes 113 respectively, that is, the number of the plurality of conductive columns 114 is the same as the number of the plurality of through holes 113; the end surface of the conductive column 114 close to the antenna element 12 is flush with the first main surface 111 of the antenna substrate 11, and the antenna element 12 is attached to the end surface of the conductive column 114.

[0092] In the assembly process of the base station antenna 10: the conductive column 114 is arranged in the through hole 113 so that the end face of the conductive column 114 close to the antenna vibrator 12 is flush with the first main surface 111 of the antenna substrate 11; the antenna vibrator 12 is attached to the first main surface 111 of the antenna substrate 11, and since the projection of the antenna port 14 on the first main surface 111 at least partially overlaps with the antenna vibrator 12, the antenna vibrator 12 is attached to the end face of the conductive column 114.

[0093] The material of the conductive column 114 may include one or more of silver, copper, aluminum, gold, chromium, manganese or titanium. The end surface of the conductive column 114 away from the antenna element 12 may be connected to the corresponding antenna port 14 .

[0094] The base station antenna 10 of this embodiment is further connected to the filter component 20, which can be arranged below the second main surface 112 of the antenna substrate 11, that is, the base station antenna 10 is arranged on the filter component 20, and the filter component 20 includes a plurality of filter ports 21, and the number of the plurality of filter ports 21 is the same as the number of the plurality of antenna ports 14; each antenna port 14 is respectively connected to the corresponding antenna element 12 and to the corresponding filter port 21.

[0095] The filter assembly 20 may include a plurality of filter units 22 arranged in an array, each filter unit 22 corresponds to an antenna element 12 , and the antenna element 12 is connected to the corresponding filter unit 22 via the antenna port 14 and the filter port 21 .

[0096] The base station antenna 10 of the present application can be applied to a 5G communication system, and the filter assembly 20 can include a plurality of dielectric filters, and the material of the dielectric body of the dielectric filter can be a material with high dielectric constant and low loss and other properties, such as ceramic, glass or titanate, etc. In other embodiments, the base station antenna 10 can also be applied to other communication systems, such as a 4G communication system.

[0097] When the base station antenna 10 is covered on the filter assembly 20, the antenna port 14 and the corresponding filter port 21 are aligned and plugged with each other. That is, the position of the antenna port 14 and the position of the filter port 21 are set correspondingly. When the base station antenna 10 is covered on the filter assembly 20, the antenna port 14 can be aligned and plugged with the corresponding filter port 21. At this time, the antenna port 14 is connected to the corresponding filter port 21.

[0098] The antenna port 14 of this embodiment is connected to the corresponding filter port 21 in a aligned manner, and the base station antenna 10 and the filter assembly 20 do not need to be connected with an additional cable, thereby avoiding signal interference and saving costs.

[0099] and Fig. 9 The difference between the base station antenna 10 in FIG. 1 is that: Fig.10 As shown, the base station antenna 10 further includes a feeder line 15 attached to the first main surface 111 and used to connect the antenna port 14 and the antenna element 12. The feeder line 15 and the antenna element 12 are made of the same material and process, so the antenna element 12 and the feeder line 15 can be attached to the first main surface 111 together.

[0100] Multiple antenna ports 14 can be arranged on the second main surface 112, and the antenna substrate 11 is provided with multiple through holes 113 whose number corresponds to the antenna ports 14, that is, the number of the multiple through holes 113 is the same as the number of the multiple antenna ports 14; the through holes 113 connect the first main surface 111 and the second main surface 112 of the antenna substrate 11.

[0101] Optionally, the base station antenna 10 further includes a plurality of conductive columns 114 corresponding to the through holes 113 respectively, the end surface of the conductive column 114 close to the antenna vibrator 12 is flush with the first main surface 111 of the antenna substrate 11, and the feed line 15 is attached to the end surface of the conductive column 114; the end surface of the conductive column 114 away from the antenna vibrator 12 can be connected to the corresponding antenna port 14.

[0102] The present application also provides a street light antenna, which includes an antenna bracket, an active antenna unit and a rod, wherein the rod is a street light pole, the antenna bracket is the antenna bracket 30 disclosed in the above embodiment, and the active antenna unit is the active antenna unit 50 disclosed in the above embodiment, which will not be repeated here.

[0103] In another embodiment, refer to Fig.11 and Fig.12 The active antenna unit 50 of this embodiment further includes an antenna hanger 30, which is used to fix the active antenna unit 50 on a pole (not shown), which can be a utility pole or a street light pole. The antenna hanger 30 at least includes a mounting member 31, a connecting portion 32, a first fixing member 33, and a second fixing member 34.

[0104] The connecting portion 32 is connected to the mounting member 31, and the handle 57 of the active antenna unit 50 is mounted on the mounting member 31. The mounting member 31 may include a first mounting column 311 and a second mounting column 312 arranged at intervals, and the first mounting column 311 and the second mounting column 312 may be screws.

[0105] Both ends of the first fixing member 33 and the second fixing member 34 are respectively arranged on the connecting portion 32 for fixing on the rod, that is, the first fixing member 33 and the second fixing member 34 form an accommodating space so that the rod passes through the accommodating space. When the first fixing member 33 and the second fixing member 34 lock the rod, the active antenna unit 50 is fixed on the rod through the antenna bracket 30.

[0106] The connecting portion 32 includes a connecting piece 324 and an integrally formed first fixing rod 321, a second fixing rod 322 and a third fixing rod 323. The connecting piece 324 is used to connect the mounting piece 31 and the second fixing rod 322. The first fixing rod 321 and the third fixing rod 323 are arranged perpendicular to the second fixing rod 322. In other embodiments, the mounting piece 31 can be fixed to the second fixing rod 322 by means of electric welding or the like.

[0107] In other embodiments, the mounting member 31 can be integrally formed with the connecting portion 32, for example, the first mounting column 311 and the second mounting column 312 can extend from the second fixing rod 322 along the first direction, the first fixing rod 321 and the third fixing rod 323 can extend from the second fixing rod 322 along the second direction, and the first direction is opposite to the second direction.

[0108] The first fixing rod 321 and the third fixing rod 323 are both provided with threads. When the rod is arranged in the accommodation space, the first fixing member 33 and the second fixing member 34 are fixed to the rod by screws. The antenna bracket 30 includes at least a first bracket and a second bracket. The length of the connecting portion of the first bracket and the length of the connecting portion of the second bracket are used to adjust the angle between the active antenna unit 50 and the rod. When the length of the connecting portion of the first bracket is equal to the length of the connecting portion of the second bracket, the active antenna unit 50 can be arranged parallel to the rod, that is, the angle between the active antenna unit 50 and the rod is zero; when the length of the connecting portion of the first bracket is greater than or less than the length of the connecting portion of the second bracket, an angle is formed between the active antenna unit 50 and the rod, so the antenna bracket 30 of this embodiment can adjust the angle of the active antenna unit 50.

[0109] The antenna bracket 30 of this embodiment is used to fix the active antenna unit 50 on the rod. The antenna bracket 30 has a simple structure and low cost. The handle 57 of the active antenna unit 50 is installed on the mounting member 31 to avoid occupying the installation space of the active antenna unit 50.

[0110] Please read further Fig.11 , Fig.13 and Fig.14 , Fig.13 yes Fig.11 Schematic diagram of the structure of the middle handle. Fig.14 yes Fig.13Schematic diagram of a top view of the handle of the embodiment. The handle 57 of the present embodiment includes a gripping portion 571 and a connecting portion 572 connecting the gripping portion 571 and the shell 51, wherein the connecting portion 572 can be fixed to the shell 51 by welding to connect the gripping portion 571 and the shell 51. A mounting surface 573 matching the shape of an external fixing column (not shown) is provided on the side of the gripping portion 571 away from the shell; a through hole 574 is provided on the gripping portion 571 to allow the mounting member 31 to pass through the through hole 574, thereby mounting the handle 57 on the mounting member 31. For example, the first mounting column 311 and the second mounting column 312 pass through the corresponding through holes 574 respectively, and the handle 57 is mounted on the mounting member 31 by screws, so that the handle 57 of the active antenna unit 50 is mounted on the antenna bracket 30.

[0111] The number of the connecting parts 572 can be two, and the two connecting parts 572 are spaced apart along the length direction of the gripping part 571. The interval between the two connecting parts 572 is set so that a human hand can grip the gripping part 571 between the two connecting parts 572, so that a human hand can easily grip the gripping part 571.

[0112] The number of the through holes 574 may be two, that is, two through holes 574 are provided on the gripping portion 571 , and the two through holes 574 are spaced apart along the length direction of the gripping portion 571 .

[0113] The assembly surface 573 is arranged in an arc shape so that the external fixing column can pass through the through hole 574. The gripping portion 571 has two connecting holes 575 arranged at intervals along the length direction of the gripping portion 571, and the projections of the two through holes 574 in the length direction of the gripping portion 571 are located between the projections of the two connecting holes 575 in the length direction of the gripping portion 571.

[0114] The width and / or thickness of the area where the assembly surface 573 is located may be greater than the width and / or thickness of the area where the grip portion 571 and the connection portion 572 are connected. For example, the width of the area where the assembly surface 573 is located is greater than the width of the area where the grip portion 571 and the connection portion 572 are connected; or the thickness of the area where the assembly surface 573 is located is greater than the thickness of the area where the grip portion 571 and the connection portion 572 are connected. A groove 576 is provided on one side of the grip portion 571 away from the housing 51, and the through hole 574 is located at the bottom of the groove 576. The heat sink 55 is provided adjacent to the handle 57.

[0115] The above description is only an implementation method of the present application, and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly used in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A housing of an active antenna unit, characterized in that: The housing comprises a base and a reinforcing plate, a first surface of the base is provided with a plurality of heat sinks at intervals, a second surface of the base is provided with the reinforcing plate along the spacing direction of the plurality of heat sinks, wherein the first surface is provided opposite to the second surface; Wherein, the shell also includes an upper cover body, which is buckled and connected to the base and the reinforcing plate to form a accommodating cavity; the end surface of the reinforcing plate close to the upper cover body is provided with a sealing groove and a second fixing hole, the sealing groove includes two first groove sections extending along the spacing direction and respectively located on both sides of the second fixing hole, and a second groove section arranged around the periphery of the second fixing hole and connecting the two adjacent first groove sections, the second groove section is located on the side of the second fixing hole close to the accommodating cavity, and the extension line of the midline of the first groove section passes through the center of the second fixing hole.

2. The housing according to claim 1, characterized in that The upper cover body includes an upper cover plate and two first side walls bent from the upper cover plate toward the base, the first side walls are arranged along the length direction of the heat sink, and the two first side walls are respectively buckled and connected with two opposite side edges of the base.

3. The housing according to claim 2, characterized in that: The upper cover body also includes a second side wall bent from the upper cover plate toward the base, the second side wall is arranged along the spacing direction of the plurality of heat sinks, the second side wall connects the two first side walls, and the second side wall is buckled and connected to the reinforcing plate.

4. The housing according to claim 3, characterized in that: A first fixing hole is provided on an end surface of the second side wall close to the reinforcing plate, and the first fixing hole cooperates with the second fixing hole to achieve fixation of the second side wall and the reinforcing plate.

5. The housing according to claim 1, characterized in that The housing includes two reinforcing plates, and the two reinforcing plates are respectively located on two opposite sides of the base along the length direction of the heat sink.

6. The housing according to claim 1, characterized in that The reinforcing plate is arranged in a trapezoidal shape.

7. The housing according to claim 3, characterized in that: The second side wall is provided with a through hole for arranging the circuit of the active antenna unit.

8. The housing according to claim 1, characterized in that The upper cover is made of insulating material, and the reinforcing plate is made of metal sheet.

9. An active antenna unit, characterized in that: The active antenna unit comprises: The housing according to any one of claims 1 to 8, wherein the housing forms a receiving cavity; A base station antenna is arranged in the accommodating cavity; A filter assembly is disposed in the accommodating cavity, and the base station antenna cover is disposed above the filter assembly; A power amplifier component is arranged in the accommodating cavity, and the power amplifier component is arranged on a side of the filter component away from the base station antenna; The base station antenna is used to receive or transmit radio frequency signals, the filter component is used to filter the radio frequency signals, and the power amplifier component is used to amplify the power of the radio frequency signals.

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