Building antennas
By increasing the number of lower antenna radiating elements in the building antenna, the gain of the lower antenna is enhanced, which solves the problem of uneven signal coverage of building antennas, achieves more uniform signal coverage, and reduces weak areas and blind spots.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIANGYANG BRANCH CHINA MOBILE GRP HUBEI CO LTD
- Filing Date
- 2025-09-09
- Publication Date
- 2026-06-30
AI Technical Summary
Existing building antennas have poor coverage on lower floors when covering high-rise and super high-rise buildings, resulting in uneven signal coverage and weak or dead zones.
The design employs an upper and lower antenna, with the lower antenna having more radiating elements than the upper antenna, enhancing its radiation performance. By increasing the gain of the lower antenna, path loss in long-distance coverage is compensated for, achieving uniform signal coverage.
By increasing the number of lower antenna radiating elements and improving the lower antenna gain, the problem of uneven signal coverage of building antennas was solved, weak signal areas and blind spots were reduced, and more uniform signal coverage was achieved.
Smart Images
Figure CN224437938U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of wireless communication technology, specifically relating to a building antenna. Background Technology
[0002] Building antennas refer to antenna equipment installed on the roof of buildings, mainly used to receive and transmit wireless signals to improve communication quality and coverage. However, with the continuous development of mobile communication networks, users' demand for building antennas and their diverse needs for signal coverage are also constantly increasing, requiring uniform signal coverage across buildings of different heights to minimize weak or dead signal areas.
[0003] Currently, for building antennas covering high-rise and super high-rise buildings, a large vertical bandwidth is achieved by setting up upper and lower antennas. However, because the propagation distance from the lower antenna to the lower floor of the target building is longer, the coverage of the lower floor of the target building is worse than that of the upper floor, resulting in uneven coverage between the upper and lower floors of the entire building. Utility Model Content
[0004] The purpose of this application is to provide a building antenna that can solve the problem of uneven signal coverage radiated by current building antennas to target buildings.
[0005] To solve the above-mentioned technical problems, this application is implemented as follows:
[0006] This application provides a building antenna, including a base plate, an upper antenna, and a lower antenna. Both the upper and lower antennas are mounted on the base plate. The electromagnetic waves radiated by the upper antenna cover the upper part of the target building, and the electromagnetic waves radiated by the lower antenna cover the lower part of the target building.
[0007] Both the upper antenna and the lower antenna include a substrate and at least two radiating elements. The substrate is disposed on the base plate, and each of the radiating elements is disposed on the substrate and arranged in an array. The number of radiating elements in the lower antenna is greater than the number of radiating elements in the upper antenna.
[0008] In this embodiment, the number of radiating elements of the lower antenna is greater than the number of radiating elements of the upper antenna. That is, by increasing the number of radiating elements of the lower antenna, the radiation performance of the lower antenna is improved, thereby increasing the gain of the lower antenna. This compensates for the path loss caused by the lower antenna needing long-distance coverage and the large signal incident angle, so that the signal radiated by the building antenna to the target building can be uniformly covered, thereby reducing weak signal areas and blind spots. Attached Figure Description
[0009] Figures 1 to 3 These are schematic diagrams of the building antenna disclosed in this application from different viewing angles, wherein... Figure 3In this context, A represents the angle between the upper antenna 200 and the lower antenna 300.
[0010] Figures 4 to 5 These are schematic diagrams of the first support disclosed in the embodiments of this application from different perspectives;
[0011] Figures 6 to 7 These are schematic diagrams of a portion of the structure of the first connecting component disclosed in the embodiments of this application, viewed from different perspectives.
[0012] Explanation of reference numerals in the attached figures:
[0013] 100-Base Plate;
[0014] 200 - Upper antenna, 210 - Substrate, 211 - First socket, 220 - Radiation element;
[0015] 300 - Lower antenna, 311 - Second socket;
[0016] 400 - First connecting shaft;
[0017] 510-First bracket, 511-First strip hole, 512-First plate segment, 513-Second plate segment, 513a-Angle marking scale line, 520-Second bracket;
[0018] 610 - First fastener, 620 - Second fastener;
[0019] 710 - First connecting assembly, 711 - First connecting plate, 711a - Third socket, 711b - Second strip hole, 711c - Third plate segment, 711d - Fourth plate segment, 712 - Second connecting plate, 712a - Fourth socket, 713 - Second connecting shaft, 714 - First connector, 715 - Second connector, 716 - Fourth fastener, 717 - Third fastener, 720 - Second connecting assembly. Detailed Implementation
[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0021] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0022] The building antenna provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.
[0023] like Figures 1 to 7 As shown in the illustration, this application discloses a building antenna, which includes a base plate 100, an upper antenna 200, and a lower antenna 300. Both the upper antenna 200 and the lower antenna 300 are disposed on the base plate 100. Optionally, the base plate 100 can be a metal plate, or other types of structures; this application does not impose specific limitations on this. The electromagnetic waves radiated by the upper antenna 200 are used to cover the upper part of the target building, and the electromagnetic waves radiated by the lower antenna 300 are used to cover the lower part of the target building. Specifically, the target building refers to the building opposite the building where the building antenna is located.
[0024] Both the upper antenna 200 and the lower antenna 300 include a substrate 210 and at least two radiating elements 220. The substrate 210 is disposed on the base plate 100, and each radiating element 220 is disposed on the substrate 210. Optionally, the substrate 210 can be made of PCB material, or other structures; this embodiment does not impose specific limitations on this. Optionally, the side of the base plate 100 facing the radiating element 220 can serve as a reflective surface, thereby reflecting electromagnetic waves from the side of the base plate 100 where the radiating element 220 is located back to the side where the radiating element 220 is located, thus forming a directional antenna and creating a superposition effect of the radiation fields, thereby increasing the gain of the upper antenna 200 and the lower antenna 300. Furthermore, the radiating elements 220 are arranged in an array, with the lower antenna 300 having a greater number of radiating elements 220 than the upper antenna 200.
[0025] In this embodiment, the number of radiating elements 220 in the lower antenna 300 is greater than the number of radiating elements 220 in the upper antenna 200. That is, by increasing the number of radiating elements 220 in the lower antenna 300, the radiation performance of the lower antenna 300 is improved, thereby increasing its gain. This compensates for the path loss caused by the lower antenna 300's need for long-distance coverage and large signal incidence angle, thus enabling the signal radiated from the building antenna to the target building to provide uniform coverage, thereby reducing weak signal areas and blind spots. Therefore, this embodiment can solve the problem of uneven signal coverage from building antennas to target buildings.
[0026] Optionally, each radiation unit 220 includes a connected support and a radiation body. One end of the support is connected to the substrate 210, and the other end of the support is connected to the radiation body. The radiation body faces the target building to radiate electromagnetic waves.
[0027] In one optional embodiment, at least one of the upper antenna 200 and the lower antenna 300 is movably disposed on the base plate 100. The first end of the substrate 210 of the upper antenna 200 is rotatably connected to the first end of the substrate 210 of the lower antenna 300. At least one of the second ends of the substrate 210 of the upper antenna 200 and the second ends of the substrate 210 of the lower antenna 300 is movably connected to the base plate 100, so that the included angle A formed between the upper antenna 200 and the lower antenna 300 is adjustable to change the vertical beamwidth of the building antenna. When the target building is tall, the distance between the second end of the substrate 210 of the upper antenna 200 and the second end of the substrate 210 of the lower antenna 300 is increased to increase the angle A between the upper antenna 200 and the lower antenna 300, thereby increasing the vertical beamwidth of the building antenna and improving the coverage of the electromagnetic waves radiated by the building antenna so that the target building can be uniformly covered by electromagnetic waves in its height direction. When the target building is short, the distance between the second end of the substrate 210 of the upper antenna 200 and the second end of the substrate 210 of the lower antenna 300 is decreased to decrease the angle A between the upper antenna 200 and the lower antenna 300, thereby decreasing the vertical beamwidth of the building antenna and narrowing the coverage of the electromagnetic waves radiated by the building antenna to enhance the electromagnetic energy radiated to the target building. In this design, the upper antenna 200 and the lower antenna 300 are arranged in a V-shape. While achieving uniform signal coverage of the target building, the radiation beam direction of the building antennas can be flexibly adjusted by changing the angle A between the upper antenna 200 and the lower antenna 300, thus meeting diverse signal coverage requirements under different building spacing and height conditions. Alternatively, both the upper antenna 200 and the lower antenna 300 can be fixed to the base plate 100.
[0028] In a further optional embodiment, the first end of the substrate 210 of the upper antenna 200 is provided with a first sleeve portion 211, and the first end of the substrate 210 of the lower antenna 300 is provided with a second sleeve portion 311. Optionally, both opposite end faces of the first sleeve portion 211 and the second sleeve portion 311 can be provided with a connecting shaft, and the other can be rotatably sleeved on the connecting shaft, so that the first end of the substrate 210 of the upper antenna 200 is rotatably connected to the first end of the substrate 210 of the lower antenna 300; or, optionally, the building antenna further includes a first connecting shaft 400, and both the first sleeve portion 211 and the second sleeve portion 311 can be rotatably sleeved on the first connecting shaft 400, and the first sleeve portion 211 and the second sleeve portion 311 are arranged at intervals along the axial direction of the first connecting shaft 400, so that the first end of the substrate 210 of the upper antenna 200 is rotatably connected to the first end of the substrate 210 of the lower antenna 300. In this design, the upper antenna 200 and the lower antenna 300 are rotatably connected in the manner described above. This structure is simple and easy to manufacture. Furthermore, both the first sleeve part 211 and the second sleeve part 311 are sleeved on the first connecting shaft 400, which can increase the connection area between the upper antenna 200 and the lower antenna 300, thereby improving the connection stability and firmness between the two.
[0029] In a further optional embodiment, the building antenna further includes a first bracket 510, a second bracket 520, a first fastener 610, and a second fastener 620. Both the first bracket 510 and the second bracket 520 are disposed on the base plate 100. Both the first bracket 510 and the second bracket 520 are provided with a first strip-shaped hole 511 extending in the thickness direction of the base plate 100. The first end of the first connecting shaft 400 mates with the first strip-shaped hole 511 of the first bracket 510. The first fastener 610 is threadedly connected to the first end of the first connecting shaft 400. The first fastener 610 is located on the side of the first bracket 510 opposite to the first sleeve portion 211, and the first fastener 610 is threadedly connected to the first end of the first connecting shaft 400. A bracket 510 is axially positioned and engaged with the first connecting shaft 400 to prevent the first end of the first connecting shaft 400 from dislodging from the first slot 511 of the first bracket 510. The second end of the first connecting shaft 400 engages with the first slot 511 of the second bracket 520. A second fastener 620 is threadedly connected to the second end of the first connecting shaft 400. The second fastener 620 is located on the side of the second bracket 520 opposite to the first sleeve portion 211, and the second fastener 620 and the second bracket 520 are axially positioned and engaged with the first connecting shaft 400 to prevent the second end of the first connecting shaft 400 from dislodging from the second slot 711b of the second bracket 520. The first connecting shaft 400 can slide relative to the wall of the first slot 511 in the thickness direction of the base plate 100.
[0030] Specifically, when the first connecting shaft 400 slides relative to the wall of the first strip hole 511 in a direction close to the base plate 100, the included angle A between the upper antenna 200 and the lower antenna 300 increases; when the first connecting shaft 400 slides relative to the wall of the first strip hole 511 in a direction away from the base plate 100, the included angle A between the upper antenna 200 and the lower antenna 300 decreases. This scheme supports the upper antenna 200 and the lower antenna 300 through the first bracket 510 and the second bracket 520, which helps to improve the stability of the upper antenna 200 and the lower antenna 300. Of course, the first bracket 510 and the second bracket 520 can also be omitted. In this case, both the first fastener 610 and the second fastener 620 can be positioned and engaged with the end face of the first socket 211 or the second socket 311 in the axial direction of the first connecting shaft 400.
[0031] Optionally, both the first support 510 and the second support 520 can be linear flat plate structures; or, in other optional embodiments, both the first support 510 and the second support 520 include a connected first plate segment 512 and a second plate segment 513, with the first plate segment 512 bent relative to the second plate segment 513, i.e., both the first support 510 and the second support 520 have an L-shaped structure. The first plate segment 512 is connected to the base plate 100, and the second plate segment 513 is provided with the first strip-shaped hole 511 described above. In this solution, the first support 510 and the second support 520 adopt an L-shaped structure to increase the contact area between the first support 510 and the second support 520 and the base plate 100, thereby improving the stability of the first support 510 and the second support 520, and further improving the stability of the upper antenna 200 and the lower antenna 300.
[0032] Optionally, the second plate segment 513 has an angle marking scale line 513a on the side facing away from the first socket portion 211. The angle marking scale line 513a is set along the length direction of the first strip hole 511. Specifically, the angle marking scale line 513a can be the angle information of the included angle A between the upper antenna 200 and the lower antenna 300. In the direction extending from the top end (the end away from the base plate 100) to the bottom end (the end closer to the base plate 100) of the second plate segment 513, the angle marking scale line 513a increases sequentially, for example: Figure 4As shown, in the direction extending from the top to the bottom of the second plate segment 513, the angle marking scale lines 513a are sequentially 130°, 140°, 150°, 160°, 170°, and 180°. This solution, by setting the angle marking scale lines 513a on the second plate segment 513, allows the first bracket 510 and the second bracket 520 to form an angle display, thereby facilitating the adjustment of the included angle A between the upper antenna 200 and the lower antenna 300 by the operator, thus adapting the vertical beamwidth radiated by the building antenna to the height of the target building. Of course, the aforementioned angle marking scale lines 513a may not be set, or the aforementioned angle marking scale lines 513a may be selected according to actual needs; this application embodiment does not impose specific limitations in this regard.
[0033] Optionally, the supporting surface of the base plate 100 may be provided with a first sliding groove and a second sliding groove. The second end of the substrate 210 of the upper antenna 200 is slidably engaged with the first sliding groove, and the second end of the substrate 210 of the lower antenna 300 is slidably engaged with the second sliding groove. Alternatively, in another optional embodiment, the building antenna further includes a first connecting component 710 and a second connecting component 720. The second end of the upper antenna 200 is movably connected to the first end of the base plate 100 through the first connecting component 710, and the second end of the lower antenna 300 is movably connected to the second end of the base plate 100 through the second connecting component 720. Both the first connecting component 710 and the second connecting component 720 include a first connecting plate 711 and a second connecting plate 712 that are rotatably connected. Optionally, both the first connecting plate 711 and the second connecting plate 712 can be metal plates, or other types of structures. This application embodiment does not impose specific limitations on this. The first connecting plate 711 of the first connecting assembly 710 is slidably connected to the second end of the substrate 210 of the upper antenna 200, the second connecting plate 712 of the first connecting assembly 710 is slidably connected to the first end of the base plate 100, the first connecting plate 711 of the second connecting assembly 720 is slidably connected to the second end of the substrate 210 of the lower antenna 300, and the second connecting plate 712 of the second connecting assembly 720 is slidably connected to the second end of the base plate 100.
[0034] Specifically, when it is necessary to adjust the included angle A between the upper antenna 200 and the lower antenna 300, the first connecting plate 711 can slide relative to the base plate 100, and the second connecting plate 712 can slide relative to the substrate 210 to adjust the included angle A, thereby making the radiation beam pointing angle of the upper antenna 200 and the lower antenna 300 adjustable. In this solution, the upper antenna 200 is movably connected to the base plate 100 through the first connecting component 710, and the lower antenna 300 is movably connected to the base plate 100 through the second connecting component 720. This can increase the contact area between the upper antenna 200 and the lower antenna 300 and the base plate 100 respectively, thereby improving the stability of the upper antenna 200 and the lower antenna 300.
[0035] In a further optional embodiment, the first end of the first connecting plate 711 is provided with a third sleeve portion 711a, and the first end of the second connecting plate 712 is provided with a fourth sleeve portion 712a. Optionally, both opposite end faces of one of the third sleeve portion 711a and the fourth sleeve portion 712a may be provided with a connecting shaft, and the other is rotatably sleeved on the connecting shaft, so that the first connecting plate 711 and the second connecting plate 712 are rotatably connected. Alternatively, the first connecting assembly 710 and the second connecting assembly 720 may also include a second connecting shaft 713, and both the third sleeve portion 711a and the fourth sleeve portion 712a may be rotatably sleeved on the second connecting shaft 713. The third sleeve portion 711a and the fourth sleeve portion 712a are arranged at intervals along the axial direction of the second connecting shaft 713, so that the first connecting plate 711 and the second connecting plate 712 are rotatably connected. In this solution, the first connecting plate 711 and the second connecting plate 712 are rotatably connected in the manner described above. The structure is simple and easy to manufacture. Furthermore, the third sleeve part 711a and the fourth sleeve part 712a are both sleeved on the second connecting shaft 713, which can increase the connection area between the first connecting plate 711 and the second connecting plate 712, thereby improving the connection stability and firmness between the two.
[0036] Optionally, the number of the third socket 711a and the fourth socket 712a can both be one, or the number of the third socket 711a and the fourth socket 712a can both be at least two. Each third socket 711a and each fourth socket 712a is arranged alternately along the axial direction of the second connecting shaft 713. This can make the forces exerted by the first connecting plate 711 and the second connecting plate 712 on the second connecting shaft 713 more dispersed, thereby improving the stability of the first connecting plate 711 and the second connecting plate 712 rotating relative to the second connecting shaft 713. Furthermore, when each third socket 711a and each fourth socket 712a is arranged alternately along the axial direction of the second connecting shaft 713, the adjacent third socket 711a and fourth socket 712a can be positioned and engaged in the axial direction of the second connecting shaft 713 to prevent the first connecting plate 711 and the second connecting plate 712 from moving relative to the second connecting shaft 713.
[0037] In a further optional embodiment, both the first connecting plate 711 and the second connecting plate 712 are provided with a second strip hole 711b. The first connecting component 710 and the second connecting component 720 also include a first connector 714, a second connector 715, a fourth fastener 716 and a third fastener 717. Optionally, at least one of the first connector 714 and the second connector 715 can be a screw, bolt, etc., and at least one of the fourth fastener 716 and the third fastener 717 can be a nut, etc. The embodiments of this application do not impose specific limitations on this. One end of the first connector 714 passes through the second slot 711b of the base plate 100 and the second connecting plate 712 and is threadedly connected to the fourth fastener 716. The fourth fastener 716 and the second connecting plate 712 are positioned and engaged in their thickness direction. One end of the second connector 715 of the first connecting assembly 710 passes through the substrate 210 of the upper antenna 200 and the second slot 711b of the first connecting assembly 710 and is threadedly connected to the third fastener 717 of the first connecting assembly 710. One end of the second connector 715 of the second connecting assembly 720 passes through the substrate 210 of the lower antenna 300 and the second slot 711b of the second connecting assembly 720 and is threadedly connected to the third fastener 717 of the second connecting assembly 720. The third fastener 717 and the first connecting plate 711 are positioned and engaged in their thickness direction.
[0038] Specifically, when it is necessary to adjust the angle A between the upper antenna 200 and the lower antenna 300, the fourth fastener 716 can be loosened first, and then the first connecting plate 711 can slide relative to the first connecting member 714 through the second strip hole 711b to adjust the angle A between the upper antenna 200 and the lower antenna 300 to the target angle. Then, the fourth fastener 716 can be tightened to fix the first connecting plate 711 relative to the base plate 210. Alternatively, the third fastener 717 can be loosened first, and then the second connecting plate 712 can slide relative to the second connecting member 715 through the second strip hole 711b to adjust the angle A between the upper antenna 200 and the lower antenna 300 to the target angle. Then, the third fastener 717 can be tightened to fix the second connecting plate 712 relative to the base plate 100. This solution involves providing second slotted holes 711a on both the first connecting plate 711 and the second connecting plate 712. This allows users to adjust the angle A between the upper antenna 200 and the lower antenna 300 using either the fourth fastener 716 and the first connector 714, or the third fastener 717 and the second connector 715, according to their actual needs. This satisfies various adjustment requirements of the operator. Alternatively, only one of the first connecting plate 711 or the second connecting plate 712 may have the second slotted hole 711a.
[0039] Optionally, the main body of the first connecting plate 711 can be a straight flat plate structure; or, in other optional embodiments, the main body of the first connecting plate 711 includes a connected third plate segment 711c and a fourth plate segment 711d, the third plate segment 711c is bent relative to the fourth plate segment 711d, that is, the main body of the first connecting plate 711 has an L-shaped structure, the third plate segment 711c is rotatably connected to the second connecting plate 712, the third sleeve portion 711a is connected to the third plate segment 711c, and the fourth plate segment 711d is provided with the aforementioned second strip hole 711b. This solution sets the first connecting plate 711 into an L-shaped structure, at which time the third plate segment 711c can serve as a support structure, thereby supporting the upper antenna 200 and the lower antenna 300 to a certain height, avoiding interference between the substrate 210 and the base plate 100 during the adjustment of the included angle A between the upper antenna 200 and the lower antenna 300, thereby improving the flexibility of adjusting the size of the included angle A between the upper antenna 200 and the lower antenna 300.
[0040] In another optional embodiment, the number of the first socket 211 and the second socket 311 can both be one, or the number of the first socket 211 and the second socket 311 can both be at least two. The first socket 211 and the second socket 311 are arranged alternately along the axial direction of the first connecting shaft 400. This can make the forces exerted by the upper antenna 200 and the lower antenna 300 on the first connecting shaft 400 more dispersed, thereby improving the stability of the upper antenna 200 and the lower antenna 300 rotating relative to the first connecting shaft 400. Furthermore, when the first socket 211 and the second socket 311 are arranged alternately along the axial direction of the first connecting shaft 400, the adjacent first socket 211 and the second socket 311 can be positioned and engaged in the axial direction of the first connecting shaft 400, preventing the upper antenna 200 or the lower antenna 300 from shifting relative to the first connecting shaft 400.
[0041] Optionally, the radiating elements 220 of the upper antenna 200 can be arranged in a 2×2 rectangular array, and the radiating elements 220 of the lower antenna 300 can be arranged in a 2×3 rectangular array or a 3×2 rectangular array. This application embodiment does not impose specific limitations on this.
[0042] Based on the building antenna disclosed in this application, the number of radiating elements 220 of the lower antenna 300 is greater than the number of radiating elements 220 of the upper antenna 200. The gain of the lower antenna 300 can be G1, and the gain of the upper antenna 200 can be G2, both of which can satisfy: G1-G2≥1.5dB; the vertical 3dB beamwidth of the lower antenna 300 is θ1, and the vertical 3dB beamwidth of the upper antenna 200 is θ2, both of which can satisfy: θ1 / θ2≈1; the vertical beamwidth after the upper antenna 200 and the lower antenna 300 are combined is: (θ1+θ2) / 2+(180-ω), where the adjustable range of the included angle A is 130°~180°, and the range of the vertical beamwidth after the upper antenna 200 and the lower antenna 300 are (θ1+θ2) / 2~(θ1+θ2) / 2+50°, which can meet the requirement of a wider vertical beamwidth and a larger coverage area.
[0043] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.
Claims
1. A building antenna, characterized in that, The system includes a base plate (100), an upper antenna (200), and a lower antenna (300). Both the upper antenna (200) and the lower antenna (300) are mounted on the base plate (100). The electromagnetic waves radiated by the upper antenna (200) are used to cover the upper part of the target building, and the electromagnetic waves radiated by the lower antenna (300) are used to cover the lower part of the target building. Both the upper antenna (200) and the lower antenna (300) include a substrate (210) and at least two radiating elements (220). The substrate (210) is disposed on the base plate (100), and each of the radiating elements (220) is disposed on the substrate (210). The radiating elements (220) are arranged in an array. The number of radiating elements (220) of the lower antenna (300) is greater than the number of radiating elements (220) of the upper antenna (200).
2. The building antenna according to claim 1, characterized in that, At least one of the upper antenna (200) and the lower antenna (300) is movably disposed on the base plate (100). The first end of the substrate (210) of the upper antenna (200) is rotatably connected to the first end of the substrate (210) of the lower antenna (300). At least one of the second end of the substrate (210) of the upper antenna (200) and the second end of the substrate (210) of the lower antenna (300) is movably connected to the base plate (100), so that the included angle formed between the upper antenna (200) and the lower antenna (300) is adjustable to change the vertical beamwidth of the building antenna.
3. The building antenna according to claim 2, characterized in that, The upper antenna (200) has a first sleeve portion (211) at the first end of the substrate (210), and the lower antenna (300) has a second sleeve portion (311) at the first end of the substrate (210). The building antenna also includes a first connecting shaft (400). The first sleeve portion (211) and the second sleeve portion (311) are rotatably sleeved on the first connecting shaft (400), and the first sleeve portion (211) and the second sleeve portion (311) are arranged at an axial distance along the first connecting shaft (400) so that the first end of the substrate (210) of the upper antenna (200) is rotatably connected to the first end of the substrate (210) of the lower antenna (300).
4. The building antenna according to claim 3, characterized in that, The building antenna further includes a first bracket (510), a second bracket (520), a first fastener (610), and a second fastener (620). Both the first bracket (510) and the second bracket (520) are disposed on the base plate (100). Both the first bracket (510) and the second bracket (520) have a first strip-shaped hole (511) extending in the thickness direction of the base plate (100). The first end of the first connecting shaft (400) engages with the first strip-shaped hole (511) of the first bracket (510). The first fastener (610) is threadedly connected to the first end of the first connecting shaft (400). The first fastener (610) and the first bracket (510) are positioned and engaged in the axial direction of the first connecting shaft (400). The second end of the first connecting shaft (400) is engaged with the first strip hole (511) of the second bracket (520). The second fastener (620) is threadedly connected to the second end of the first connecting shaft (400). The second fastener (620) and the second bracket (520) are positioned and engaged in the axial direction of the first connecting shaft (400). The first connecting shaft (400) can slide relative to the hole wall of the first strip hole (511) in the thickness direction of the base plate (100).
5. The building antenna according to claim 4, characterized in that, Both the first bracket (510) and the second bracket (520) include a first plate segment (512) and a second plate segment (513) connected to each other. The first plate segment (512) is bent relative to the second plate segment (513). The first plate segment (512) is connected to the base plate (100). The second plate segment (513) is provided with the first strip hole (511). The side of the second plate segment (513) facing away from the first sleeve part (211) is provided with an angle marking scale line (513a). The angle marking scale line (513a) is arranged along the length direction of the first strip hole (511).
6. The building antenna according to claim 3, characterized in that, The building antenna further includes a first connecting component (710) and a second connecting component (720). The second end of the upper antenna (200) is movably connected to the first end of the base plate (100) through the first connecting component (710), and the second end of the lower antenna (300) is movably connected to the second end of the base plate (100) through the second connecting component (720). Both the first connecting assembly (710) and the second connecting assembly (720) include a first connecting plate (711) and a second connecting plate (712) that are rotatably connected. The first connecting plate (711) of the first connecting assembly (710) is slidably connected to the second end of the substrate (210) of the upper antenna (200). The second connecting plate (712) of the first connecting assembly (710) is slidably connected to the first end of the bottom plate (100). The first connecting plate (711) of the second connecting assembly (720) is slidably connected to the second end of the substrate (210) of the lower antenna (300). The second connecting plate (712) of the second connecting assembly (720) is slidably connected to the second end of the bottom plate (100).
7. The building antenna according to claim 6, characterized in that, The first connecting plate (711) has a third socket (711a) at its first end, and the second connecting plate (712) has a fourth socket (712a) at its first end. The first connecting assembly (710) and the second connecting assembly (720) also include a second connecting shaft (713). The third socket (711a) and the fourth socket (712a) are rotatably sleeved on the second connecting shaft (713), and the third socket (711a) and the fourth socket (712a) are arranged at an axial distance along the second connecting shaft (713) so that the first connecting plate (711) and the second connecting plate (712) are rotatably connected.
8. The building antenna according to claim 6, characterized in that, Both the first connecting plate (711) and the second connecting plate (712) are provided with a second strip hole (711b). The first connecting assembly (710) and the second connecting assembly (720) also each include a first connector (714), a second connector (715), a fourth fastener (716), and a third fastener (717). One end of the first connector (714) passes through the second strip hole (711b) of the base plate (100) and the second connecting plate (712) and is threadedly connected to the fourth fastener (716). The fourth fastener (716) and the second connecting plate (712) are positioned and fitted in their thickness direction. The first fastener (715) of the first connecting assembly (710) is... One end of the second connector (715) passes through the substrate (210) of the upper antenna (200) and the second strip hole (711b) of the first connecting assembly (710) and is threadedly connected to the third fastener (717) of the first connecting assembly (710). One end of the second connector (715) of the second connecting assembly (720) passes through the substrate (210) of the lower antenna (300) and the second strip hole (711b) of the second connecting assembly (720) and is threadedly connected to the third fastener (717) of the second connecting assembly (720). The third fastener (717) is positioned and engaged with the first connecting plate (711) in its thickness direction.
9. The building antenna according to claim 8, characterized in that, The main body of the first connecting plate (711) includes a third plate segment (711c) and a fourth plate segment (711d) connected to each other. The third plate segment (711c) is bent relative to the fourth plate segment (711d). The third plate segment (711c) is rotatably connected to the second connecting plate (712). The fourth plate segment (711d) is provided with the second strip hole (711b).
10. The building antenna according to claim 3, characterized in that, The number of the first socket (211) and the second socket (311) is at least two, and each of the first socket (211) and each of the second socket (311) is arranged alternately along the axial direction of the first connecting shaft (400).