A dual-beam base station

Abstract

The application discloses a double-beam base station. The double-beam base station comprises two double-beam antennas which are symmetrically arranged along an axis and are connected with RRU devices respectively; the double-beam antenna comprises two antenna bodies, the half-power horizontal wave width of the antenna body is A, the included angle between the main lobe directions of the two antenna bodies is 90°, and the double-beam antenna forms a signal coverage area with an included angle of 180°, wherein 43°≤A≤47°. In the application, the half-power horizontal wave width of the antenna body is A, so that each antenna body can form a signal coverage area with an included angle of about 90°, and the included angle between the main lobe directions of the two antenna bodies is 90°, so that the double-beam antenna forms a signal coverage area with an included angle of 180°, thereby the two double-beam antennas which are symmetrically arranged along the axis form a signal coverage area with an included angle of 360°, and the number of RRU devices is reduced compared with the existing base station, and the long-term power consumption of the base station is effectively reduced.

Description

Technical Field

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

[0002] Currently, operators such as China Unicom and China Telecom commonly use three single-beam antennas with a 120° coverage area to achieve signal coverage in base stations built in open environments such as rural areas and suburbs. Each of these three single-beam antennas requires three RRU (Remote Radio Unit) devices for signal processing. Therefore, reducing base station energy consumption has become an urgent problem to be solved. Utility Model Content

[0003] In order to overcome at least one of the defects described in the prior art, this application provides a dual-beam base station that effectively reduces the long-term power consumption of the base station.

[0004] A dual-beam base station according to an embodiment of this application includes: two dual-beam antennas; two RRU devices, wherein the RRU devices are connected one-to-one with the dual-beam antennas (1); the dual-beam antenna includes two antenna bodies, wherein the half-power horizontal bandwidth of the antenna body is A, and the included angle between the main lobe directions of the two antenna bodies is 90°, thereby driving each dual-beam antenna to form a signal coverage area with an included angle of 180°, wherein 43°≤A≤47°.

[0005] In this dual-beam base station, the half-power horizontal beamwidth of the antenna is A, so that each antenna can form a signal coverage area with an angle of approximately 90°. At the same time, the angle between the main lobe directions of the two antennas is 90°, so that the dual-beam antenna can form a signal coverage area with an angle of 180°. Thus, the two dual-beam antennas can be combined to form a signal coverage area with an angle of 360°, thereby reducing the number of RRU devices compared to existing base stations and effectively reducing the long-term power consumption of the base station.

[0006] According to some embodiments of this application, the antenna body includes a lens unit and an antenna assembly; the antenna assembly includes a reflector and a radiating unit mounted on the reflector, and the half-power horizontal bandwidth of the antenna assembly is B, where B > A; the lens unit is disposed on the side of the radiating unit away from the reflector, and is used to shape the half-power horizontal bandwidth of the antenna assembly to A.

[0007] According to some embodiments of this application, the lens unit is one or more of the following shapes: spherical, ellipsoidal, rugby ball-shaped, and cylindrical.

[0008] According to some embodiments of this application, the lens unit includes a plurality of conductive tube layers arranged sequentially in a direction away from the reflector, each of the conductive tube layers containing a plurality of short conductive tubes separated from each other by a first lightweight dielectric material, and a second lightweight dielectric material is disposed between adjacent conductive tube layers.

[0009] According to some embodiments of this application, one of the antenna bodies in the dual-beam antenna is defined as the first antenna body, and the other antenna body is defined as the second antenna body; the included angle between the reflector of the first antenna body and the reflector of the second antenna body is 90°.

[0010] According to some embodiments of this application, it further includes a first antenna radome and a second antenna radome, wherein the first antenna body is housed within the first antenna radome and the second antenna body is housed within the second antenna radome.

[0011] According to some embodiments of this application, a fixing bracket is also included, on which both the first radome and the second radome are mounted.

[0012] According to some embodiments of this application, B is 65°.

[0013] According to some embodiments of this application, A is 45°.

[0014] According to some embodiments of this application, the operating frequency band of the dual-beam antenna is 1710MHz-2170MHz.

[0015] In summary, the dual-beam base station provided in this application has the following technical advantages: By using a half-power horizontal beamwidth of A for each antenna, each antenna can form a signal coverage area with an angle of approximately 90°. Simultaneously, by utilizing a 90° angle between the main lobe directions of two antennas, the dual-beam antenna can form a signal coverage area with an angle of 180°. This allows the two dual-beam antennas to be combined to form a signal coverage area with an angle of 360°, thereby reducing the number of RRU devices compared to existing base stations and effectively reducing the long-term power consumption of the base station. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a dual-beam antenna according to an embodiment of this application; Figure 2 This is a schematic diagram of the antenna body according to an embodiment of this application; Figure 3 This is a schematic diagram of the lens unit according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the conductive tube layer in an embodiment of this application; Figure 5This is the radiation pattern of the antenna body in an embodiment of this application; Figure 6 The simulated radiation pattern of the antenna body in the embodiment of this application is shown in the operating frequency band of 1710MHz-2170MHz. Figure 7 This is the radiation pattern of the dual-beam antenna according to an embodiment of this application; Figure 8 This is the radiation pattern of a dual-beam base station according to an embodiment of this application.

[0017] The meanings of the reference numerals in the attached figures are as follows: 1. Dual-beam antenna; 11. Antenna body; 2. Lens unit; 21. Conductive tube layer; 22. Short conductive tube; 3. Antenna assembly; 31. Reflector; 32. Radiating unit; 4. Fixing bracket. Detailed Implementation

[0018] To better understand and implement this application, the technical solutions in this application will be clearly and completely described below with reference to the accompanying drawings.

[0019] In the description of this application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0021] See Figure 1 , Figure 5 , Figure 7 and Figure 8This application discloses a dual-beam base station. The dual-beam base station includes two dual-beam antennas 1 and two RRU devices. In some embodiments, the two dual-beam antennas 1 point in opposite directions to improve communication coverage and efficiency, thereby achieving more comprehensive signal coverage. Preferably, the dual-beam antennas 1 and the RRU devices are connected in a one-to-one correspondence. Specifically, the RRU device, short for Remote Radio Unit, is a key device in modern wireless communication networks. It is responsible for receiving and transmitting signals, and can process signals, including signal amplification, attenuation, and filtering, to meet the signal transmission needs in different scenarios. It can also transmit the processed signal to the antenna via a feeder, and then transmit it into the air to achieve communication with mobile terminals. Preferably, the dual-beam antenna 1 includes two antenna bodies 11, each with a half-power horizontal bandwidth of A, and the angle between the main lobe directions of the two antenna bodies 11 is 90°, causing each dual-beam antenna 1 to form a signal coverage area with an angle of 180°, where 43°≤A≤47°. It should be noted that the half-power horizontal bandwidth A refers to the angle formed between the antenna and the main lobe direction when the power of the antenna in the horizontal plane drops to half of its strongest direction (main lobe direction) (i.e., 3dB attenuation). Specifically, by using the half-power horizontal bandwidth A of the antenna body 11, each antenna body 11 can form a signal coverage area with an angle of approximately 90°. At the same time, by utilizing the 90° angle between the main lobe directions of two antenna bodies 11, each dual-beam antenna 1 can form a signal coverage area with an angle of 180°. This allows two dual-beam antennas 1 to be combined to form a signal coverage area with an angle of 360°, thereby reducing the number of RRU devices compared to existing base stations and effectively reducing the long-term power consumption of the base station.

[0022] See Figure 5 and Figure 6 In some embodiments, the half-power horizontal beamwidth of the antenna body 11 is 45°, that is, A is 45°. Therefore, the included angle of the signal coverage area of ​​each antenna body 11 is 90°, and the included angle between the main lobe directions of the two antenna bodies 11 is 90°, so that the two antenna bodies 11 form two continuous but non-overlapping signal coverage areas, thereby realizing that the dual-beam antenna 1 forms a signal coverage area with an included angle of 180°.

[0023] See Figure 1 and Figure 2In some embodiments, the antenna body 11 includes a lens unit 2 and an antenna assembly 3; the antenna assembly 3 includes a reflector 31 and a radiating unit 32 mounted on the reflector 31, and the half-power horizontal bandwidth of the antenna assembly 3 is B, where B > A; the lens unit 2 is disposed on the side of the radiating unit 32 away from the reflector 31, and is used to shape the half-power horizontal bandwidth of the antenna assembly 3 to A. Preferably, the radiating element 32 includes several oscillators arranged on the reflector 31, forming an antenna assembly 3 with a half-power horizontal bandwidth of B. The lens unit 2 is then positioned on the side of the radiating element 32 away from the reflector 31. The lens unit 2 compresses the wide beam of the antenna assembly 3 into a narrow beam and suppresses sidelobes, thereby shaping the half-power horizontal bandwidth of the antenna assembly 3 to A, thus improving the antenna gain. This allows the dual-beam base station to significantly increase the transmission distance of the communication system in open environments (rural areas, suburbs), ensuring stable and reliable signal transmission over longer distances. It also helps improve the overall quality of the communication system, resulting in wider network coverage and stronger signal strength.

[0024] See Figure 1 and Figure 2 In some embodiments, the lens unit 2 is shaped like a sphere, an ellipsoid, a rugby ball, or a cylinder, or one or more of these shapes. Preferably, the lens unit 2, being shaped like a sphere, an ellipsoid, a rugby ball, or a cylinder, shapes the electromagnetic wave signal passing through it, changing the half-power horizontal bandwidth of the antenna assembly 3 from B to A, so that the half-power horizontal bandwidth of the antenna body 11 is A. This results in a better gain effect, enabling the dual-beam base station to significantly increase the transmission distance of the communication system in open environments, ensuring that the signal can be transmitted stably and reliably to a greater distance, and helping to improve the overall quality of the communication system, resulting in wider network coverage and stronger signal strength.

[0025] See Figure 1 , Figure 3 and Figure 4In some embodiments, the lens unit 2 includes a plurality of conductive tube layers 21 arranged sequentially along a direction away from the reflector 31. Each conductive tube layer 21 contains a plurality of short conductive tubes 22 separated from each other by a first lightweight dielectric material, and a second lightweight dielectric material is disposed between adjacent conductive tube layers 21. Optionally, the conductive tube layers 21 may be circular, square, or other shapes. Preferably, both the first and second lightweight dielectric materials are foam dielectric layers, and the short conductive tubes 22 are made of metallic material. The short conductive tubes 22 disposed in the same conductive tube layer 21 form a lattice that provides the same delay coefficient for any polarization of electromagnetic waves propagating perpendicular to the conductive tube layer 21. The lens unit 2 has isotropic characteristics for such electromagnetic waves. The distance between the short conductive tubes 22 disposed on the same conductive tube layer 21 can be increased towards the outer contour direction of the conductive tube layer 21 to form a conductive tube layer 21 with non-uniform dielectric constant. The stacking of the conductive tube layers 21 acts like a dielectric lens, effectively focusing electromagnetic waves for propagation in a direction perpendicular to the conductive tube layers 21. Furthermore, the distance between adjacent short conductive tubes 22 arranged on any of the conductive layers is smaller than the distance between adjacent conductive layers. Therefore, the delay of the lens for electromagnetic waves propagating along the arrangement direction of the conductive tube layers 21 is greater than the delay for electromagnetic waves propagating in other directions. Due to this anisotropy, the lens unit 2, compared to lenses made of isotropic dielectric materials, can more effectively form narrow beams and suppress sidelobes, thereby shaping the half-power horizontal bandwidth of the antenna assembly 3 from B to A, so that the half-power horizontal bandwidth of the antenna body 11 is A, improving the antenna gain. This allows the dual-beam base station to significantly increase the transmission distance of the communication system in open environments, ensuring stable and reliable signal transmission over longer distances, and contributing to improved overall communication system quality, resulting in wider network coverage and stronger signal strength.

[0026] In some embodiments, one of the antenna elements 11 in the dual-beam antenna 1 is defined as the first antenna element 11, and the other antenna element 11 is defined as the second antenna element 11; the angle between the reflector 31 of the first antenna element 11 and the reflector 31 of the second antenna element 11 is 90°. Preferably, the angle between the reflector 31 of the first antenna element 11 and the reflector 31 of the second antenna element 11 is 90°, so that the angle between the main lobe direction of the first antenna element 11 and the main lobe direction of the second antenna element 11 is 90°, thereby driving the dual-beam antenna 1 to form a signal coverage area with an angle of 180°; furthermore, the two dual-beam antennas 1 have a total of four antenna elements 11, which are arranged along the circumferential direction, and the angle between the reflector 31 of any two adjacent antenna elements 11 in the circumferential direction is 90°. The angle is 90° so that the angle between the main lobe directions of any two adjacent antenna bodies 11 in the circumferential direction is 90°, thereby realizing that the two dual-beam antennas 1 form a signal coverage area with an angle of 360°. Optionally, the four antenna bodies 11 are arranged along a straight line with the straight line as the center line. The signal coverage area formed by one dual-beam antenna 1 covers one side of the straight line, and the signal coverage area formed by the other dual-beam antenna 1 covers the other side of the straight line, thereby realizing that the two dual-beam antennas 1 form a signal coverage area with an angle of 360°.

[0027] In some embodiments, the system further includes a first radome and a second radome, with the first antenna body 11 housed within the first radome and the second antenna body 11 housed within the second radome. This arrangement ensures that the first antenna body 11 and the second antenna body 11 are housed within the first and second radomes respectively, allowing the two antenna bodies 11 in the same dual-beam antenna 1 to operate independently. This reduces electromagnetic interference between the antenna bodies 11 and ensures that each antenna body 11 can operate independently and stably, thereby further improving the capacity of the communication system. Furthermore, both the first and second radomes are made of a low-dielectric-constant material, with a dielectric constant of... Optionally, between 2.1 and 4.6, the low dielectric constant material can be PP, PE, ABS, PC, PVC, fiberglass, or their modified materials, so that both the first and second radomes have low permittivity, which can reduce energy loss and signal distortion in signal transmission, improve the electrical performance and operational stability of the antenna body 11 housed in both the first and second radomes, and since the dielectric constant of the material is inversely proportional to the propagation speed of electromagnetic wave signals in the material, radomes made of low dielectric constant materials can reduce signal transmission delay and improve signal transmission speed and efficiency, which is of great significance for fields such as communication and data transmission.

[0028] See Figure 1In some embodiments, a fixing bracket 4 is also included, on which both the first and second radomes are mounted. Preferably, the fixing bracket 4 secures the first and second radomes, ensuring that the first and second antenna bodies 11 are reliably fixed in their respective positions, effectively covering a predetermined area. Furthermore, the fixing bracket 4 can also support and fix the radome or reflector 31, thereby effectively limiting the angle between the reflector 31 of the first and second antenna bodies 11.

[0029] In some embodiments, the half-power horizontal bandwidth of the antenna assembly 3 is 65°, i.e., B is 65°, and its antenna gain is 18dBi. In this embodiment, the lens unit 2 is disposed on the side of the radiating unit 32 away from the reflector 31. The lens unit 2 is used to shape the half-power horizontal bandwidth of the antenna assembly 3 from 65° to 45°, so that the half-power horizontal bandwidth of the antenna body 11 is 45°, and the antenna gain can be increased to 19.5dBi (see the data test table for details). This effectively improves the antenna gain, enabling the dual-beam base station to significantly increase the transmission distance of the communication system in open environments, ensuring that the signal can be transmitted stably and reliably to a greater distance, and helping to improve the overall quality of the communication system, resulting in wider network coverage and stronger signal strength.

[0030] Data test table:

[0031] Currently, 5G base stations in rural areas by operators such as China Unicom and China Telecom generally use the N5+N8 frequency bands jointly built by the two companies. However, the total downlink bandwidth of the N5+N8 bands jointly built by the two companies is only 22MHz (see the table of major frequency bands jointly built by the two companies). At the same time, since a large number of users are still using 4G networks, the base stations need to support both 4G and 5G networks. As a result, the 4G network still occupies half of the bandwidth resources, which limits the quality of 5G services in rural areas. In this embodiment, the operating frequency band of the dual-beam antenna 1 is 1710MHz-2170MHz (see...). Figure 6 Preferably, the dual-beam antenna 1 operates in the N1 (2.1G) frequency band, where the total bandwidth of the N1 (2.1G) frequency band is 40MHz, and the entire base station uses four antenna bodies 11 to divide the 360° area into four cells (see...). Figure 8 This allows the base station in this embodiment to be upgraded from the low-frequency 3*22M of existing base stations to 4*40M, improving spectrum utilization and effectively solving the 5G coverage capacity problem in rural and suburban areas.

[0032] Table of major frequency bands jointly constructed by the telecommunications industry:

[0033] In some embodiments, a dual-beam base station is provided with two dual-beam antennas 1, and the two dual-beam antennas 1 have a total of four antenna bodies 11. Preferably, the half-power horizontal bandwidth of the antenna assembly 3 is 65°. The lens unit 2 is disposed on the side of the radiating unit 32 away from the reflector 31. The lens unit 2 drives the half-power horizontal bandwidth of the antenna body 11 to 45°, thereby effectively improving the antenna gain. This allows the dual-beam base station to significantly increase the transmission distance of the communication system in open environments, ensuring that the signal can be transmitted stably and reliably to a greater distance. Preferably, the half-power horizontal bandwidth of the antenna body 11 is 45°, that is, the included angle of the signal coverage area of ​​each antenna body 11 is 90°, and the included angle between the main lobe directions of the two antenna bodies 11 within the dual-beam antenna 1 is 90°, so that the dual-beam antenna 1 composed of two antenna bodies 11 can... A signal coverage area with an included angle of 180° is formed, thereby driving the two dual-beam antennas 1 to combine and form a signal coverage area with an included angle of 360°. Preferably, the dual-beam antennas 1 are connected one-to-one with the RRU devices, that is, the dual-beam base station in this embodiment only requires two RRU devices. Compared with existing base stations, it can reduce the number of RRU devices and effectively reduce the long-term power consumption of the base station. Moreover, the dual-beam antennas 1 operate in the N1 (2.1G) frequency band, where the total bandwidth of the N1 (2.1G) frequency band is 40M. Specifically, after the entire base station uses four antenna bodies 11 to split the 360° area into four areas, the base station in this embodiment can be upgraded from the low frequency 3*22M of existing base stations to 4*40M, which improves the spectrum utilization rate, effectively solves the 5G coverage capacity problem in rural and suburban areas, improves the spectrum utilization rate, and helps to improve the overall quality of the communication system.

[0034] The technical means disclosed in this application are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A dual-beam base station, characterized in that, include: Two dual-beam antennas (1); Two RRU devices are connected one-to-one with the dual-beam antenna (1); The dual-beam antenna (1) includes two antenna bodies (11), the half-power horizontal bandwidth of the antenna body (11) is A, and the included angle between the main lobe directions of the two antenna bodies (11) is 90°, driving each dual-beam antenna (1) to form a signal coverage area with an included angle of 180°, where 43°≤A≤47°.

2. The dual-beam base station according to claim 1, characterized in that: The antenna body (11) includes a lens unit (2) and an antenna assembly (3); The antenna assembly (3) includes a reflector (31) and a radiating element (32) assembled on the reflector (31), and the half-power horizontal bandwidth of the antenna assembly (3) is B, B > A; The lens unit (2) is disposed on the side of the radiating unit (32) away from the reflector (31) and is used to shape the half-power horizontal bandwidth of the antenna assembly (3) to A.

3. The dual-beam base station according to claim 2, characterized in that: The lens unit (2) is one or more of the following shapes: spherical, ellipsoidal, rugby ball-shaped, and cylindrical.

4. The dual-beam base station according to claim 2, characterized in that: The lens unit (2) includes a plurality of conductive tube layers (21) arranged sequentially in a direction away from the reflector (31). Each conductive tube layer (21) contains a plurality of short conductive tubes (22) separated from each other by a first lightweight dielectric material, and a second lightweight dielectric material is disposed between adjacent conductive tube layers (21).

5. The dual-beam base station according to claim 2, characterized in that: Define either of the antenna bodies (11) in the dual-beam antenna (1) as the first antenna body, and the other antenna body (11) as the second antenna body; The angle between the reflector (31) of the first antenna body and the reflector (31) of the second antenna body is 90°.

6. The dual-beam base station according to claim 5, characterized in that: It also includes a first antenna cover and a second antenna cover, wherein the first antenna body is housed within the first antenna cover and the second antenna body is housed within the second antenna cover.

7. The dual-beam base station according to claim 6, characterized in that: It also includes a fixing bracket (4), on which both the first radome and the second radome are mounted.

8. The dual-beam base station according to any one of claims 2-7, characterized in that: B is 65°.

9. The dual-beam base station according to any one of claims 1-7, characterized in that: A is 45°.

10. The dual-beam base station according to claim 1, characterized in that: The operating frequency band of the dual-beam antenna (1) is 1710MHz-2170MHz.

Images