A street lamp antenna

Abstract

The present application discloses a streetlight antenna. The streetlight antenna at least comprises a streetlight pole and an active antenna unit, wherein the active antenna unit at least comprises an integrally formed outer shell, an integrally formed inner shell and two support covers, wherein the outer shell and the inner shell are arranged between the two support covers, and the support cover is used to fix the active antenna unit on the streetlight pole. In this way, the present application can install the active antenna unit on the streetlight pole to improve the signal coverage of the active antenna unit.

Description

Technical Field

[0001] The present application relates to the field of radio frequency technology, and in particular to a street lamp antenna. 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 communication systems, and their performance has a crucial impact on the overall performance of base station systems; in order to achieve large-capacity communication, the number of antennas used in the large-scale array 5G Massive MIMO technology has increased from 2, 4, or 8 to 64, 128, or 256.

[0003] The inventors of the present application discovered during a long research and development process that existing array antennas cannot be directly installed on street lamps, resulting in a small signal coverage range. Summary of the invention

[0004] The present application provides a street lamp antenna to solve the above problems.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: to provide a street light antenna, which at least includes a street light pole and an active antenna unit, the active antenna unit at least includes an integrally formed outer shell, an integrally formed inner shell and two support covers, the outer shell and the inner shell are arranged between the two support covers, and the support cover is used to fix the active antenna unit on the street light pole.

[0006] The beneficial effect of the embodiments of the present application is: different from the prior art, the street light antenna of the present application includes a street light pole and an active antenna unit, and the support cover is used to fix the active antenna unit on the street light pole, so the active antenna unit is installed on the street light pole to improve the signal coverage range of the active antenna unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] 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.

[0008] Figure 1 It is a structural schematic diagram of an embodiment of a street lamp antenna of the present application;

[0009] Figure 2 yes Figure 1 A schematic structural diagram of a housing of an active antenna unit;

[0010] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle inner shell;

[0011] Figure 4 yes Figure 3 Schematic diagram of the structure of the heat sink;

[0012] Figure 5 yes Figure 2 Schematic diagram of the structure of the middle shell;

[0013] Figure 6 yes Figure 2 A schematic diagram of the structure of the middle support cover;

[0014] Figure 7 yes Figure 1 Schematic diagram of the structure of the active antenna unit

[0015] Figure 8 yes Figure 7 A schematic diagram of the structure of a base station antenna in an embodiment;

[0016] Fig. 9 yes Figure 8 Schematic diagram of the cross section of the base station antenna along line II;

[0017] Fig.10 yes Figure 7 A schematic structural diagram of another embodiment of a base station antenna;

[0018] Fig.11 yes Figure 7 A schematic structural diagram of a filter unit of a filter assembly;

[0019] Fig.12 yes Figure 7 A schematic diagram of the structure of the partition assembly of the filter assembly;

[0020] Fig.13 is a structural schematic diagram of another embodiment of the active antenna unit of the present application;

[0021] Fig.14 is a structural schematic diagram of another embodiment of the active antenna unit of the present application;

[0022] Fig.15 It is a structural schematic diagram of another embodiment of the active antenna unit of the present application. DETAILED DESCRIPTION

[0023] 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.

[0024] 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.

[0025] The present application provides a street lamp antenna according to an embodiment. Figure 1 and Figure 2 As shown, the street light antenna 70 at least includes a street light pole 71 and an active antenna unit (AAU) 10, and the active antenna unit 10 at least includes an integrally formed outer shell 13, an integrally formed inner shell 12 and two support covers 14, and the support cover 14 is used to fix the active antenna unit 10 on the street light pole 71. Among them, the shell 11 of the active antenna unit 10 includes an integrally formed outer shell 13, an integrally formed inner shell 12 and two support covers 14, and the outer shell 13 and the inner shell 12 are arranged between the two support covers 14 to form an accommodating space, and the components of the active antenna unit 10 (the components can be devices such as the power amplifier board 17, the filter assembly 15 and the base station antenna 16 of the active antenna unit 10) are arranged in the accommodating space.

[0026] The street light antenna 70 of this embodiment includes a street light pole 71 and an active antenna unit 10. The support cover 14 is used to fix the active antenna unit 10 on the street light pole 71. Since the street light poles 71 are arranged at intervals beside the road, and the active antenna unit 10 is installed on the street light pole 71, the signal coverage range of the active antenna unit 10 can be improved.

[0027] like Figure 3 As shown, the inner shell 12 includes an integrally formed cylinder 121 , and the outer surface of the cylinder 121 includes at least three supporting surfaces 122 , and the supporting surfaces 122 are used to arrange components of the active antenna unit 10 .

[0028] The inner shell 12 may be integrally extruded; the inner shell 12 may be made of a metal material, and the metal material may include one or more of silver, copper, aluminum, gold, iron, chromium, manganese or titanium. The material of the inner shell 12 of the present application may be aluminum, that is, the inner shell 12 is an aluminum extruded profile.

[0029] In one application scenario, the material used to make the inner shell 12 is first heated and melted to make the material fluid; then a screw or a plunger is used to push the head mold to extrude the melted material in a fixed direction. With the help of the extrusion action of the screw or the plunger, the melted material can be forced through the opening of the head mold under pressure to be formed into a continuous profile with a constant cross-section. The continuous profile includes a barrel 121, and the extrusion direction of the head mold is parallel to the length direction of the barrel 121; finally, the continuous profile is cooled by a cooling device so that the continuous profile loses its plastic state and solidifies.

[0030] The outer surface of the cylinder 121 of this embodiment may include three supporting surfaces 122, that is, the cross-sectional shape of the cylinder 121 along the axial direction of the inner shell 12 is triangular; each supporting surface 122 can be provided with an active antenna unit 10, so the inner shell 12 can be provided with three active antenna units 10, which can reduce the area occupied by the active antenna unit 10.

[0031] In addition, the present embodiment adopts an extrusion process to integrally form the inner shell 12 . Compared with the existing forming process, no cutting and grinding processes are required, so there is no waste of materials, and the manufacturing process can be simplified, saving production costs.

[0032] The inner surface of the cylinder 121 is provided with a plurality of heat sinks 123 for dissipating heat from the cylinder 121 . The plurality of heat sinks 123 and the cylinder 121 are integrally formed.

[0033] like Figure 4 As shown, the heat sink 123 corresponding to each supporting surface 122 is symmetrical with the center line A of the supporting surface 122, and a wave-shaped arrangement structure is formed between the center line A and the two side edges of the supporting surface 122, that is, the height of the heat sink 123 located on the center line A is greater than the height of the heat sink 123 located on the two side edges of the supporting surface 122, so that multiple heat sinks 123 and the cylinder 121 can be integrally formed, simplifying the manufacturing process and saving production costs.

[0034] The inner surface of the cylinder 121 is also provided with a plurality of ribs 124, which are integrally formed with the cylinder 121. Each support surface 122 is provided with an assembly hole 125, and the components of the active antenna unit 10 can be mounted on the support surface 122 through the assembly hole 125. The depth of the assembly hole 125 is greater than the thickness of the support surface 122, and extends into the rib 124, so the assembly hole 125 does not need to penetrate the support surface 122, thereby ensuring the sealing of the inner shell 12 and preventing signal leakage or interference.

[0035] The convex rib 124 may be arranged in a columnar shape, and the axial direction of the convex rib 124 is perpendicular to the supporting surface 122 , wherein a portion of the heat sink 123 is arranged on the convex rib 124 .

[0036] The heat sink 123 is arranged perpendicular to the support surface 122. The surface of the heat sink 123 may also be provided with protrusions or grooves to increase the heat dissipation area and improve the heat dissipation effect; the heat sink 123 may be a sheet with good thermal conductivity such as a copper sheet or an aluminum sheet.

[0037] like Figure 5 As shown, the housing 13 includes at least three side walls 131 connected in sequence, the side walls 131 are arranged on the components of the active antenna unit 10, and the housing 13 is integrally formed.

[0038] The number of the side walls 131 is the same as the number of the supporting surfaces 122, so that the side walls 131 and the supporting surfaces 122 are arranged correspondingly. A recessed portion 132 is arranged between two adjacent side walls 131, and the recessed portion 132 abuts against the inner shell 12 of the active antenna unit 10; that is, the inner shell 12 is arranged in the outer shell 13, and the recessed portion 132 abuts against the inner shell 12 to form a plurality of accommodating cavities with both ends open and spaced from each other between the inner shell 12 and the outer shell 13, and the components of the active antenna unit 10 are arranged in the accommodating cavities. If the number of the side walls 131 and the number of the supporting surfaces 122 are both three, three accommodating cavities are formed between the inner shell 12 and the outer shell 13.

[0039] The cross-sectional shape of the recessed portion 132 may be an arc. In other embodiments, the cross-sectional shape of the recessed portion 132 may be a triangle, a rectangle, or a circle.

[0040] The shell 13 can be made of a plastic material, which includes 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).

[0041] In other embodiments, the housing 13 may also be made of fiberglass, which not only has super corrosion resistance and impact resistance, but also has a beautifying effect and strong electromagnetic penetration ability.

[0042] The outer shell 13 is made of plastic material. The outer shell 13 is integrally extruded. The extrusion molding process of the outer shell 13 can be the same as the extrusion molding process of the inner shell 12, which will not be described in detail.

[0043] In this embodiment, the housing 13 includes at least three side walls 131 connected in sequence, and the housing 13 is integrally formed, which can simplify the manufacturing process of the housing 13 and save production costs.

[0044] like Figure 6 As shown, the support cover 14 includes a fixing member 141, a plurality of connecting rods 142 and at least three supporting parts 143 connected in sequence.

[0045] The fixing member 141 is provided in a ring shape and is used to fix the support cover 14 on a rod (not shown), and the rod may be a street light pole 71, a telephone pole, or an antenna pole, etc. For example, the fixing member 141 has a circular receiving hole, and the rod passes through the receiving hole, and the fixing member 141 is fixed on the rod to fix the support cover 14 on the rod.

[0046] A plurality of connecting rods 142 are radially arranged on the fixing member 141, that is, a plurality of connecting rods 142 are arranged on the fixing member 141, and the connecting rods 142 are used to connect the fixing member 141 and the supporting portion 143. The number of the supporting portions 143 is the same as the number of the side walls 131 or the number of the supporting surfaces 122. For example, the supporting cover 14 includes three supporting portions 143 connected in sequence, and the three supporting portions 143 are connected in sequence to form a triangle, and the fixing member 141 is arranged at the center of the triangle.

[0047] The support portion 143 may include a bottom plate 144, a first support plate 145 and a second support plate 146 disposed on the bottom plate 144, wherein the first support plate 145 is disposed on the outer side of the outer shell 13 of the active antenna unit 10, and the second support plate 146 is disposed on the inner side of the inner shell 12 of the active antenna unit 10, so that the support cover 14 is used to support the inner shell 12 and the outer shell 13 of the active antenna unit 10. Therefore, the support cover 14 can be used to support the inner shell 12 and the outer shell 13 of the active antenna unit 10 to fix the active antenna unit 10 on the rod.

[0048] Compared with the antenna in the prior art that is fixed on the rod by a bracket, the support cover 14 of this embodiment is used to fix the active antenna unit 10 on the rod. The support cover 14 includes a ring-shaped fixing part 141, a plurality of connecting rods 142 and at least three supporting parts 143 connected in sequence. It has a simple structure, is easy to install, and improves efficiency.

[0049] like Figure 7 As shown, the active antenna unit 10 includes a housing 11 and a base station antenna 16, a filter assembly 15 and a power amplifier board 17 arranged in the housing 11. The housing 11 is provided with a plurality of accommodating cavities, and the accommodating cavities are used to arrange the base station antenna 16, the filter assembly 15 and the power amplifier board 17. The filter assembly 15 transmits and receives radio frequency signals through the base station antenna 16, and the power amplifier board 17 is used to amplify the power of the radio frequency signal.

[0050] Specifically, the power amplifier board 17, the filter assembly 15 and the base station antenna 16 can be arranged in sequence on the support surface 122 of the inner shell 12; the base station antenna 16 is arranged on the filter assembly 15, and the filter assembly 15 is arranged on the power amplifier board 17 for electromagnetic shielding of the power amplifier board 17.

[0051] like Figure 8 As shown, the base station antenna 16 includes an antenna substrate 161 and a plurality of antenna elements 162 arranged in an array on a first main surface 164 of the antenna substrate 161; the antenna substrate 161 is made of an 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.

[0052] Multiple antenna elements 162 are arranged in an array on the first main surface 164 of the antenna substrate 161, and the array may include a circular array or a rectangular array; each antenna element 162 is arranged in a sheet shape and attached to the first main surface 164, and the shape of the antenna element 162 may be rectangular, square or polygonal.

[0053] Among them, the antenna vibrator 162 can be attached to the first main surface 164 by hot stamping, printing, coating, electroplating or pasting; because the antenna vibrator 162 is attached to the first main surface 164, compared with the base station antenna in the prior art, the height of the antenna vibrator 162 relative to the antenna substrate 161 is reduced, which can effectively reduce the volume of the base station antenna 16.

[0054] The assembly process of the base station antenna 16 may include: preparing an antenna substrate 161 of a preset size using insulating material; attaching the antenna element 162 to a preset position of the first main surface 164 to obtain the above-mentioned base station antenna 16.

[0055] The base station antenna 16 of this embodiment includes an antenna substrate 161 made of insulating material and a plurality of antenna elements 162 . No additional buckles are required, which reduces components and reduces costs. In addition, the assembly process of the base station antenna 16 is simple, which improves production efficiency.

[0056] like Fig. 9 As shown, the base station antenna 16 of this embodiment may further include a reflective layer 163, which is attached to the second main surface 165 of the antenna substrate 161 and is arranged opposite to the first main surface 164, that is, the reflective layer 163 may be attached to the second main surface 165 by hot stamping, printing, coating, electroplating or pasting, and the second main surface 165 is arranged opposite to the first main surface 164. The material of the reflective layer 163 may include one or more of silver, copper, aluminum, gold, iron, chromium, manganese or titanium; specifically, the material of the reflective layer 163 of this embodiment is aluminum.

[0057] Among them, the distance between the antenna vibrator 162 and the reflective layer 163 can be one-eighth wavelength of the center frequency of the base station antenna 16; this one-eighth wavelength is a theoretical value, and the actual distance between the antenna vibrator 162 and the reflective layer 163 can be around one-eighth wavelength, which can meet the corresponding radiation performance.

[0058] The reflective layer 163 is used to focus the antenna signal on the corresponding antenna element 162 to enhance the receiving capability of the base station antenna 16; the reflective layer 163 can also be used to block or shield the interference signal located on the back of the antenna substrate 161 to prevent the base station antenna 16 from being interfered when receiving the antenna signal.

[0059] The antenna substrate 161 may be made of a plastic material, including one or more of PE, PP, PVC, PET, PS, PA, PPS, PC or PI. The antenna element 162 is made of a metal material, including one or more of silver, copper, aluminum, gold, iron, chromium, manganese or titanium.

[0060] See also Fig.10As shown, the base station antenna 16 of this embodiment may not be provided with the above-mentioned reflective layer 163; the base station antenna 16 further includes a plurality of antenna ports 166 whose number is equal to the antenna element 162, that is, the number of the plurality of antenna ports 166 is the same as the number of the plurality of antenna elements 162; each antenna port 166 is respectively connected to the corresponding antenna element 162.

[0061] In other embodiments, the number of multiple antenna ports 166 may be proportional to the number of multiple antenna elements 162 . For example, the ratio of the number of multiple antenna ports 166 to the number of multiple antenna elements 162 is 1:3, that is, three antenna elements 162 are connected to one antenna port 166 .

[0062] A plurality of antenna ports 166 may be disposed on the second main surface 165, and the projection of the antenna port 166 on the first main surface 164 may at least partially overlap with the antenna vibrator 162; in this embodiment, the projection of the antenna port 166 on the first main surface 164 completely overlaps with the antenna vibrator 162. A plurality of through holes 167 corresponding in number to the antenna ports 166 are disposed on the antenna substrate 161, that is, the number of the plurality of through holes 167 is the same as the number of the plurality of antenna ports 166; the through holes 167 connect the first main surface 164 and the second main surface 165 of the antenna substrate 161.

[0063] The base station antenna 16 further includes a plurality of conductive posts 168 corresponding to the through holes 167 respectively, that is, the number of the plurality of conductive posts 168 is the same as the number of the plurality of through holes 167; the end face of the conductive post 168 close to the antenna element 162 is flush with the first main surface 164 of the antenna substrate 161, and the antenna element 162 is attached to the end face of the conductive post 168.

[0064] In the assembly process of the base station antenna 16: the conductive column 168 is set in the through hole 167 so that the end face of the conductive column 168 close to the antenna vibrator 162 is flush with the first main surface 164 of the antenna substrate 161; the antenna vibrator 162 is attached to the first main surface 164 of the antenna substrate 161. Since the projection of the antenna port 166 on the first main surface 164 at least partially overlaps with the antenna vibrator 162, the antenna vibrator 162 is attached to the end face of the conductive column 168.

[0065] The material of the conductive column 168 may include one or more of silver, copper, aluminum, gold, chromium, manganese or titanium. The end surface of the conductive column 168 away from the antenna element 162 may be connected to the corresponding antenna port 166 .

[0066] The base station antenna 16 of this embodiment is further connected to the filter component 15, and the filter component 15 can be arranged below the second main surface 165 of the antenna substrate 161, that is, the base station antenna 16 is arranged on the filter component 15, and the filter component 15 includes multiple filter ports, and the number of the multiple filter ports is the same as the number of the multiple antenna ports 166; each antenna port 166 is respectively connected to the corresponding antenna element 162 and to the corresponding filter port.

[0067] The base station antenna 16 is covered above the filter assembly 15, and the antenna port 166 and the corresponding filter port are aligned and plugged into each other, so that the antenna element 162 of the base station antenna 16 is electrically connected to the filter unit 151 of the filter assembly 15, which is used to transmit the radio frequency signal filtered by the filter unit 151, or receive the radio frequency signal and transmit it to the filter unit 151 for noise filtering.

[0068] The filter unit 151 is a cavity filter, and multiple cavity filters share a substrate (not shown). The substrate is a metal substrate, and the metal can be a metal such as copper or aluminum, or an alloy. The cavity filter can be a dielectric filter, and the material of the dielectric body of the dielectric filter can be a material with high dielectric constant and low loss properties, such as ceramic, glass or titanate. In other embodiments, the base station antenna 16 can also be applied to other communication systems, such as a 4G communication system.

[0069] like Fig.11 As shown, the filter unit 151 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.

[0070] The filter unit 151 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.

[0071] The filter assembly 15 of this embodiment includes four substrates. The filter units 151 on each substrate are arranged in two rows or two columns. The resonant cavities 221 of the filter units 151 in each row or column are arranged in the same manner.

[0072] Of course, in other embodiments, the number of substrates is not limited; the number of filter units on the substrate is not limited; the number and arrangement of resonant cavities in the filter unit is not limited; and whether the structures of multiple filter units are the same is not limited, etc. The opening of the resonant cavity 221 faces the base station antenna 16.

[0073] Among them, the filter unit 151 of this embodiment includes one filter channel to realize unidirectional transmission of signals. In other embodiments, the filter unit can also be replaced with a filter unit including a signal receiving channel and a signal transmitting channel, so that one filter unit can realize signal transmission and reception at the same time. Of course, multiple filter channels can also be set in one filter unit, and the resonator in the filter unit 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.

[0074] like Fig.12 As shown, a partition assembly 23 is protrudingly provided on one side of the filter assembly 15 close to the power amplifier board 17 . The partition assembly 23 is used to form an empty slot 24 . The empty slot 24 is used to accommodate components on the power amplifier board 17 .

[0075] The partition assembly 23 can be integrally formed with the filter assembly 15; the partition assembly 23 can be formed by stamping, CNC or injection molding.

[0076] Among them, the partition assembly 23 includes a first partition 231 arranged on the outer periphery of one side of the filter assembly 15 close to the power amplifier board 17 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 15, 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 vacant slot 24 is arranged in a rectangular shape.

[0077] In other embodiments, the shape of the vacant slot 24 formed by the partition assembly 23 can also be elliptical, hexagonal, etc.; and it is not limited whether the shape of each vacant slot 24 is the same. The specific shape of the vacant slot 24 is related to the layout of the components on the power amplifier board 17, and the vacant slot 24 should be able to accommodate the components on the power amplifier board 17.

[0078] 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 board 17 so that the filter assembly 15 can be stably installed on the power amplifier board 17 , which can reduce the electromagnetic leakage of the power amplifier board 17 and improve the electromagnetic shielding performance of the power amplifier board 17 .

[0079] The filter assembly 15 of this embodiment includes 4 groups of filter assemblies 15, each group of filter assemblies 15 includes 16 filter units 151 arranged in two rows, and the partition assembly 23 forms 16 empty slots 24 on the side of the filter assembly 15 close to the power amplifier board 17 to respectively accommodate the components on the power amplifier board 17.

[0080] Different from the prior art, the active antenna unit 10 of this embodiment integrates the power amplifier board 17, the filter assembly 15 and the base station antenna 16 in the accommodating cavity, which can improve the integration of the active antenna unit 10 and meet the integration requirements of the 5G communication system.

[0081] The inner shell 12 of the above embodiment is provided with three support surfaces 122, and the outer shell 13 is provided with three side walls 131, so that the active antenna unit 10 can send and receive signals from three directions, realize multi-directional antenna radiation, increase signal coverage, and improve performance. In addition, the inner shell 12 can form a tunnel effect, and heat is dissipated through the internal cavity of the inner shell 12 without the need to set up a cooling structure. Therefore, the structure of the active antenna unit 10 can be further simplified, which is conducive to miniaturization design.

[0082] The active antenna unit 10 of the present application is not an antenna in the traditional sense. It organically combines the radio frequency subsystem (such as the filter component 15 and the power amplifier board 17 of the present application) and the base station antenna 16; that is, the active antenna unit 10 digitizes the feeding network of the traditional antenna. The radio frequency unit and the antenna of the traditional base station are designed separately, while the active antenna unit 10 integrates the active radio frequency unit (filter component 15, power amplifier board 17) and the antenna (base station antenna 16) into one design. The active antenna unit 10 integrates the remote radio module (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 10 of the present application integrates the RRU unit and the antenna in a radome, and provides an external radio frequency port, which is used to send radio frequency signals to the external vector network analyzer.

[0083] The present application provides an active antenna unit according to another embodiment, which is different from the above-mentioned active antenna unit 10 in that: Fig.13 As shown, the active antenna unit also includes a power board 18, and the power amplifier board 17 and the power board 18 are projected onto the partition assembly respectively to obtain a first projection and a second projection, and the first projection and the second projection are arranged at intervals, that is, the power amplifier board 17 and the power board 18 are arranged at intervals. Among them, the vacant slot is used to accommodate components on the power amplifier board 17 and the power board 18, that is, the power amplifier board 17 and the power board 18 are arranged on the side of the partition assembly away from the filter assembly 15. The power board 18 is used to power the power amplifier board 17, further improving the integration of the active antenna unit, and can meet the integration requirements of the 5G communication system.

[0084] In other embodiments, the power amplifier board 17 and the power supply board 18 may be disposed on the same circuit board to reduce the space occupied by the power amplifier board 17 and the power supply board 18 .

[0085] The present application provides an active antenna unit according to another embodiment, which is different from the above-mentioned active antenna unit 10 in that: Fig.14 As shown, the outer surface of the cylinder is provided with four supporting surfaces, and the cross-sectional shape of the cylinder is square; the outer shell is provided with four side walls 531, and the supporting cover 54 includes four supporting parts connected in sequence. The active antenna unit of this embodiment can send and receive signals from four directions, realize multi-directional antenna radiation, increase signal coverage, and improve performance.

[0086] The present application provides an active antenna unit according to another embodiment, which is different from the above-mentioned active antenna unit 10 in that: Fig.15 As shown, the inner shell is provided with six support surfaces, and the cross-sectional shape of the inner shell is a hexagon; the outer shell is provided with six side walls 631, and the support cover 64 includes six support parts connected in sequence. The active antenna unit of this embodiment can send and receive signals from six directions, realize multi-directional antenna radiation, increase signal coverage, and improve performance.

[0087] 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 street lamp antenna, characterized in that: The street lamp antenna at least comprises a street lamp pole and an active antenna unit, wherein the active antenna unit at least comprises an integrally formed outer shell, an integrally formed inner shell and two support covers, wherein the outer shell and the inner shell are arranged between the two support covers, the inner shell comprises a cylinder, the inner surface of the cylinder is provided with a heat sink, and the support cover is used to fix the active antenna unit on the street lamp pole; The support cover comprises: A ring-shaped fixing member, used to fix the support cover on the street light pole; A connecting rod is radially arranged on the fixing member; At least three supporting parts connected in sequence, wherein the connecting rod is used to connect the fixing member and the supporting part; The support portion includes a bottom plate, a first support plate and a second support plate disposed on the bottom plate, wherein the first support plate is disposed on an outer side of the outer shell, and the second support plate is disposed on an inner side of the inner shell.

2. The street lamp antenna according to claim 1, characterized in that: The outer surface of the cylinder includes at least three supporting surfaces, and the supporting surfaces are used to arrange components of the active antenna unit.

3. The street lamp antenna according to claim 2, characterized in that: The housing comprises at least three side walls connected in sequence, and the components of the active antenna unit are arranged on the side walls.

4. The street lamp antenna according to claim 3, characterized in that: A recessed portion is provided between two adjacent side walls, and the recessed portion abuts against the inner shell of the active antenna unit to form a plurality of accommodating cavities spaced apart from each other between the inner shell and the outer shell.

5. The street lamp antenna according to claim 4, characterized in that: The active antenna unit includes a base station antenna, a filter assembly and a power amplifier board arranged in the accommodating cavity, the base station antenna cover is arranged above the filter assembly, the power amplifier board is arranged on the side of the filter assembly away from the base station antenna, the filter assembly transmits and receives radio frequency signals through the base station antenna, and the power amplifier board is used to amplify the power of the radio frequency signal.

6. The street lamp antenna according to claim 5, characterized in that: The base station antenna includes an antenna substrate and a plurality of antenna elements arranged in an array on a first main surface of the antenna substrate.

7. The street lamp antenna according to claim 6, characterized in that: The base station antenna further includes a plurality of antenna ports whose number is equal to or proportional to the antenna elements, and each of the antenna ports is respectively connected to the corresponding antenna element and to the corresponding filter port of the filter component.

8. The street lamp antenna according to claim 5, characterized in that: A partition assembly is protrudingly provided on one side of the filter assembly close to the power amplifier board. The partition assembly is used to form an empty slot, and the empty slot is used to accommodate components on the power amplifier board.

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