Antenna system and base station

Abstract

The present application provides an antenna system and a base station, the antenna system includes a first antenna array and a second antenna array; the first antenna array operates in a first operating frequency band, and the second antenna array operates in a second frequency band. The antenna system also includes a first reflector, the first antenna array and the second antenna array are stacked on the first reflector, and the first antenna array and the second antenna array share a first reflector. During assembly, the second antenna array can be an existing antenna on the base station in the prior art, and the first antenna array is an additional 5G antenna. The first antenna array and the first reflector form a module, which is placed on the side of the second antenna array away from the radiation area, and the first antenna array and the second antenna array share the first reflector. It can be seen from the above description that the antenna system provided in the embodiment of the present application can add different modules as needed to improve the communication performance of the existing base station, reducing the cost of base station modification.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an antenna system and a base station. Background Art

[0002] With the development of the communications industry, the requirements for the communication frequency bands of base stations are getting higher and higher, and operators expect base stations to have more communication frequency bands. However, the space resources of the operator's site are limited. Therefore, when setting up a base station, the multi-band antennas of the base station are nested or stacked to increase the working frequency band of the base station. However, in the prior art, when antennas of different frequency bands are placed together in a nested or stacked manner, once the base station is built, it is difficult to add antennas of other frequency bands to the base station. Summary of the invention

[0003] The present application provides an antenna system and a base station, which are used to improve the communication performance of the base station.

[0004] In the first aspect, an antenna system is provided, which includes at least two antenna arrays operating in different frequency bands: a first antenna array and a second antenna array; wherein the first antenna array operates in the first operating frequency band, and the second antenna array operates in the second frequency band, the first antenna of the example is a 5G antenna, and the second antenna is a 2G, 3G, 4G antenna. The antenna system also includes a first reflector, the first antenna array and the second antenna array are stacked on the first reflector, and the first antenna array and the second antenna array share a first reflector. During assembly, the second antenna array can be an existing antenna on the base station in the prior art, and the first antenna array is an additional 5G antenna. The first antenna array and the first reflector form a module, which is placed on the side of the second antenna array away from the radiation area, and the second antenna array and the first antenna array share the first reflector. It can be seen from the above description that the antenna system provided in the embodiment of the present application can add different modules as needed to improve the communication performance of the existing base station, thereby reducing the cost of base station modification.

[0005] In a specific implementation, a second feeding network for feeding the second antenna array is further included, and the second feeding network is arranged between the second antenna array and the first antenna array. By arranging the second feeding network between the first antenna array and the second antenna array, the arrangement of the first antenna array and the first reflector is facilitated.

[0006] In a specific implementation scheme, it further includes an antenna cover; the first antenna array, the second antenna array and the second feed network are arranged in the antenna cover. The antenna cover is provided to protect the first antenna array and the second antenna array, thereby improving the safety of the two antenna arrays.

[0007] In a specific implementation scheme, the radome includes a first radome and a second antenna radome, the first antenna array and the first reflector are arranged in the first radome, and the second antenna array and the second feed network are arranged in the second antenna radome. The first antenna array and the second antenna array are protected by different radomes respectively.

[0008] In a specific implementation scheme, the antenna cover is one, and the first antenna array, the second feeding network and the second antenna array are arranged in the one antenna cover. The first antenna array and the second antenna array are protected as a whole by the one antenna cover.

[0009] In a specific possible implementation, a second reflector is further included; the second antenna array includes a second antenna of the first part and a second antenna of the second part; the second antenna of the first part and the first antenna array are stacked and arranged on the first reflector; and the second antenna of the second part is arranged on the second reflector. By arranging the second reflector to reflect part of the signal of the second antenna array, the number of second antennas in the second antenna array is increased.

[0010] In a specific possible implementation, the first reflector and the second reflector are arranged along a second direction, the second direction being perpendicular to the first direction, wherein the first direction is the direction in which the first antenna array and the second antenna array are stacked, thereby increasing the number of second antennas in the second antenna array and preventing the second reflector from affecting the radiation effect of the first antenna array.

[0011] In a specific possible implementation, a third antenna array is further included, and the first antenna array, the second antenna array and the third antenna array are antenna arrays operating in different frequency bands; wherein the third antenna array and the second antenna of the second part are stacked on the second reflector, thereby increasing the communication coverage frequency band of the antenna system.

[0012] In a specific embodiment, the device further includes an antenna cover, wherein the antenna cover includes a first antenna cover and a second antenna cover; the first antenna array and the first reflector are arranged in the first antenna cover; the second antenna array, the second feed network, the third antenna array and the second reflector are arranged in the second antenna cover. The first antenna array, the second antenna array and the third antenna array are protected by the first antenna cover and the second antenna cover respectively.

[0013] In a specific possible implementation, it further includes an antenna cover, the antenna cover includes a first antenna cover and a second antenna cover; the second antenna of the first part, the second feeding network, the first antenna array and the first reflector are arranged in the first antenna cover; the second antenna of the second part, the third antenna array and the second reflector are arranged in the second antenna cover. The first antenna array, the second antenna array and the third antenna array are protected by the first antenna cover and the second antenna cover respectively.

[0014] In a specific implementation scheme, a phase shifter connected to the second feeding network is further included, the phase shifter is arranged in the second radome, and the second antenna of the first part located in the first radome is connected to the phase shifter through a jumper. A signal is sent to the second antenna through the phase shifter, and the second antenna located in different radomes is connected through a jumper.

[0015] In a specific possible implementation, a fourth antenna array is further included; the first antenna array, the second antenna array, the third antenna array and the fourth antenna array are antenna arrays operating in different frequency bands; the fourth antenna array is stacked with the second antenna array and the third antenna array on the second reflector, thereby improving the communication coverage frequency band of the antenna system.

[0016] In a second aspect, a base station is provided, comprising the antenna system as described in any one of the above items, and a digital phase shifter connected to the antenna system. The antenna system can be used to add different modules as needed to improve the communication performance of an existing base station, thereby reducing the cost of base station modification. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A structural block diagram of an antenna system provided in an embodiment of the present application;

[0018] Figure 2 A structural block diagram of another antenna system provided in an embodiment of the present application;

[0019] Figure 3 A structural block diagram of another antenna system provided in an embodiment of the present application;

[0020] Figure 4 A structural block diagram of another antenna system provided in an embodiment of the present application;

[0021] Figure 5 A structural block diagram of another antenna system provided in an embodiment of the present application;

[0022] Figure 6 A structural block diagram of another antenna system provided in an embodiment of the present application;

[0023] Figure 7 A structural block diagram of another antenna system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0024] To facilitate understanding of the antenna system provided in the embodiment of the present application, the application scenario of the antenna system provided in the embodiment of the present application is first explained. The antenna system provided in the example of the present application is applied to a base station. The construction of a base station is an important part of the investment of a mobile communication operator. The construction of a base station is generally carried out around factors such as coverage, call quality, investment returns, ease of construction, and ease of maintenance. With the development of mobile communication network services in the direction of dataization and packetization, the development trend of mobile communication base stations is bound to be broadband and large coverage construction. However, once a base station in the prior art is built, it is impossible to add antennas for other antenna frequency bands, or it costs a lot to improve the base station. For this reason, the embodiment of the present application provides an antenna system for facilitating the improvement of the frequency band of the base station and improving the communication performance of the base station.

[0025] The antenna system provided in the embodiment of the present application includes at least two antenna arrays, and each antenna array includes multiple antennas arranged in an array. The operating frequency bands of any antenna array are different. For example, the antenna system includes a first antenna array and a second antenna array, and the first antenna array and the second antenna array operate in two different operating frequency bands; the antenna system includes a first antenna array, a second antenna array and a third antenna array, and the first antenna array, the second antenna array and the third antenna array are all in different operating frequency bands. The antenna system provided in the embodiment of the present application is described in detail below in conjunction with specific drawings, but it should be understood that the antenna system shown in the drawings is only for the convenience of explaining the specific implementation method of the antenna system example. The antenna system provided in the embodiment of the present application can be arranged according to the layout shown in the drawings according to different antenna arrays as needed, and is not limited to the arrangement scheme shown in the drawings.

[0026] like Figure 1 As shown, Figure 1 An antenna system provided by an embodiment of the present application is illustrated, the antenna system includes a first antenna array 20 and a second antenna array 10, the first antenna array 20 and the second antenna array 10 are antennas operating in different operating frequency bands, illustratively, the first antenna array 20 is a 5G antenna, and the second antenna array 10 is a 2G, 3G or 4G antenna. Alternatively, the first antenna array 20 is a 2G, 3G or 4G antenna, and the second antenna array 10 is a 5G antenna.

[0027] The first antenna array 20 includes a plurality of first antennas 21 arranged in an array. Figure 1Only one column of first antennas is illustrated, but it should be understood that the number of columns of the first antennas 21 is not limited in the embodiment of the present application, and multiple columns of first antennas 21 can be selectively provided as needed, for example, two columns, three columns, four columns, and other different numbers of first antennas 21. When the first antenna array 20 is working, the first antenna array 20 is fed by a first feeding network (not shown in the figure).

[0028] The second antenna array 10 includes a plurality of second antennas 11 arranged in an array. Figure 1 Only one column of second antennas 11 is illustrated in the embodiment of the present application, but the number of second antennas 11 is not specifically limited in the embodiment of the present application, and multiple columns of second antennas 11 can be provided as needed, for example, two columns, three columns, four columns, and other different numbers of second antennas 11 are provided. When the second antenna array 10 is working, the second antenna array is fed through the second feeding network 12, and the second feeding network 12 is connected to the multiple second antennas.

[0029] Continue to refer Figure 1 The antenna system further includes a first reflector 30, and the first antenna array 20 and the second antenna array 10 are stacked on the first reflector 30 along a first direction. Figure 1 In FIG. 1 , the direction indicated by the arrow is the first direction, which is perpendicular to the reflection surface of the first reflection plate 30. Figure 1 As shown in FIG. 1 , the first antenna 21 of the first antenna array 20 is fixedly arranged on the reflecting surface of the first reflecting plate 30, and the first feeding network is arranged on the side of the first reflecting plate 30 away from the reflecting surface. The second antenna 11 and the second feeding network 12 of the second antenna array 10 are arranged at a position away from the first reflecting plate 30, as shown in FIG. Figure 1 As shown in FIG. 1 , the second feeding network 12 is arranged between the second antenna array 10 and the first antenna array 20 .

[0030] Continue to refer Figure 1 ,Depend on Figure 1 It can be seen that the first antenna array 20 and the first reflector 30 are arranged as a whole, so they can be regarded as a module, and the second antenna array 10 is separated from the first antenna array 20 and the first reflector 30. Exemplarily, an antenna array is arranged on an existing base station. When the first antenna array 20 needs to be added, the reflector of the existing antenna array is removed, and the antennas in the existing antenna array are fixed by a reinforcement structure (such as a radome or a support frame), and then the module composed of the added antenna array and the reflector is added to the side of the existing antenna array away from the first direction, so as to form a base station as shown in FIG. Figure 1The structure shown in ; wherein the first antenna array 20 is an existing antenna array, and the second antenna array 10 is an added antenna array. Alternatively, the added antenna array is directly arranged in front of the existing antenna array (on the side pointed by the first direction), forming a structure as shown in Figure 1 The structure shown; wherein the existing antenna array can be Figure 1 The first antenna array 20 in the embodiment may be the second antenna array 10. With the above method, there is no need to perform large-scale modification on the base station, which facilitates the increase of the base station communication frequency band and improves the communication effect of the base station.

[0031] refer to Figure 2 , Figure 2 Another specific embodiment of the antenna system is shown in FIG. Figure 2 The same reference numerals in Figure 1 The label in . Figure 2 The first antenna array and the second antenna array shown in FIG. Figure 1 The first antenna array and the second antenna array are described in . Figure 2 , Figure 2 The antenna system shown in FIG. Figure 1 In addition to the first antenna array and the second antenna array shown in the figure, the first antenna cover 40a and the second antenna cover 50a are also included. The first antenna cover 40a and the second antenna cover 50a are arranged along the first direction, and the second antenna 11 and the second feeding network 12 of the second antenna array are both arranged in the second antenna cover 50a. The first antenna array and the first reflector 30 are arranged in the first antenna cover 40a. Figure 2 The first phase shifter 22 of the first antenna array is also shown. The first phase shifter 22 is disposed in the first antenna cover 40a, and the first phase shifter 22 is connected to the plurality of first antennas 21 through a first feeding network and transmits signals to the first antennas 21. Figure 2 It can be seen that the first antenna array and the first reflector 30 form a module through the first antenna cover 40a. During assembly, the first antenna cover 40a can be directly placed on the side of the second antenna cover 50a away from the first direction.

[0032] like Figure 3 As shown in Figure 3 for Figure 2 A variation of the antenna system shown. Figure 3 The first antenna array and the second antenna array in the antenna system shown are Figure 2 The first antenna array and the second antenna array in are the same. The difference is Figure 3Only one first antenna cover 40b is provided, and the second antenna array, the second feed network 12, the first antenna array and the first reflector 30 are arranged in sequence along the first reverse direction and are all provided in the same antenna cover (the first antenna cover 40b). It should be understood that Figure 2 and Figure 3 The exemplary antenna system can be selectively configured according to actual circumstances. Different antenna arrays can be configured in different antenna covers or in the same antenna cover, which is not specifically limited in the embodiments of the present application.

[0033] like Figure 4 As shown, Figure 4 A specific implementation in which the antenna system includes three antenna arrays is illustrated in FIG. Figure 4 The same reference numerals in Figure 1 The same number as in . Figure 4 The antenna system shown in comprises a first antenna array, a second antenna array and a third antenna array. Figure 4 As shown in , the first antenna 21 of the first antenna array is arranged on the first reflector 30 and is connected to the first phase shifter 22 through the first feeding network. The first antenna array, the first reflector 30 and the first phase shifter 22 are arranged in the first antenna cover 40c. The multiple second antennas 11 of the second antenna array are divided into two parts, namely the second antenna 11a of the first part and the second antenna 11b of the second part, wherein the second antenna 11a of the first part includes multiple second antennas 11a, and the second antenna 11b of the second part includes multiple second antennas 11b. The second antenna 11a of the first part and the corresponding second feeding network 12 are arranged in the second antenna cover 50c. Continue to refer to Figure 4 The third antenna array includes a plurality of third antennas 61, and the third antenna array is fed by a third feeding network. The second antenna 11b and the third antenna array of the second part are arranged on the second reflector 70, and the second antenna 11b, the third antenna array and the second reflector 70 of the second part are arranged along the first direction. The second antenna 11b, the third antenna array and the second reflector 70 of the second part are arranged in the third antenna cover 90. Figure 4 The antenna system shown also shows a second phase shifter 13 and a third phase shifter 62, which are arranged in a first direction in a third antenna cover 90. The second phase shifter 13 is connected to the second phase shifter 13 through a second feeding network corresponding to the second antenna 11b of the second part, and the second feeding network 12 corresponding to the second antenna 11a of the first part is connected to the second phase shifter 13 through a jumper 100 between the second antenna cover 50c and the third antenna cover 90. The third antenna array is connected to the third phase shifter 62 through a third feeding network.

[0034] Continue to refer Figure 4 The first antenna cover 40c and the second antenna cover 50c are arranged along the first direction, and the first antenna cover 40c and the second antenna cover 50c are arranged with the third antenna cover 90 along the second direction. Figure 4 The second direction is the direction indicated by the arrow in the figure, and the second direction is the direction perpendicular to the first direction. Figure 4 In the antenna system shown, the first reflector 30 and the second reflector 70 are also arranged along the second direction, so that the second reflector 70 and the first antenna array are spatially staggered, that is, the second reflector 70 is located in the non-overlapping area of ​​the multiple first antennas 21, so as to avoid the second reflector 70 blocking the signal radiation of the first antenna 21 and reduce the influence of the set second reflector 70 on the first antenna 21.

[0035] The configuration of the antenna cover provided in the embodiment of the present application is not limited to Figure 4 In the manner shown in FIG. 1 , the first antenna array, the second antenna array and the third antenna array adopt Figure 4 When arranged in the manner shown, you can also Figure 3 The radome shown in Figure 2 is used in Figure 4 In the formation Figure 5 The antenna system shown, Figure 4 The first antenna cover 40c and the second antenna cover 50c can be combined into a first antenna cover 40d, and the other antenna cover is the second antenna cover 50d. The first antenna cover 40d and the second antenna cover 50d are arranged in a second direction. The second antenna 11a, the first antenna array and the first reflector 30 of the first part are arranged in the first antenna cover; and the second antenna 11b, the second reflector 70 and the second phase shifter 13 of the second antenna array of the second part are arranged in the second antenna cover.

[0036] like Figure 6 As shown, Figure 6 Another specific implementation in which the antenna system includes three antenna arrays is illustrated. Figure 6 The same reference numerals in Figure 4 The same number in . Figure 6 The antenna system shown in the figure includes a first antenna array, a second antenna array and a third antenna array. The structures of the three antenna arrays are similar to Figure 4 The structure shown in is the same as that shown in , and will not be repeated here. Figure 6 The antenna system shown includes two antenna covers, namely a first antenna cover 40e and a second antenna cover 50e. Figure 6 As shown in FIG. 1 , the second antenna cover 50e is an L-shaped cover body with a notch (with a Figure 6 The placement direction of the antenna system is the reference direction), and the first antenna cover 40e is arranged at the notch position of the second antenna cover 50e. Figure 6, multiple first antennas 21, first reflectors 30 and first phase shifters 22 are arranged in the first antenna cover 40e along the first direction. The second antenna cover 50e is an L-shaped structure, and the first antenna cover 40e is located at the notch position of the second antenna cover 50e. The second antenna 11a of the first part is located in the second antenna cover 50e, and is stacked with the first antenna 21 and the first reflector 30 along the first direction; the second antenna 11b of the second part, the third antenna array, the second reflector 70 and the third phase shifter 62, and the second phase shifter 13 are stacked in the second antenna cover 50e along the first direction.

[0037] like Figure 7 As shown, Figure 7 Another structure of the antenna system is illustrated. Figure 7 The numbers in the Figure 6 The same number in Figure 7 The antenna system shown is Figure 6 The antenna systems shown differ in that Figure 7 The antenna system shown adds a fourth antenna array, wherein the first antenna array, the second antenna array, the third antenna array and the fourth antenna array are antenna arrays operating in different frequency bands; illustratively, the operating frequency band of the first antenna array is 5G, the operating frequency band of the second antenna array is 4G, the operating frequency band of the third antenna array is 3G, and the operating frequency band of the fourth antenna array is 2G. Figure 7 , the first antenna array, the second antenna array and the third antenna array are arranged in the same manner as Figure 6 The fourth antenna array is stacked with the second antenna array and the third antenna array on the second reflector 70. For example, the fourth antenna array includes a plurality of fourth antennas 81, and the fourth phase shifter 82 feeds the fourth antenna array through a fourth feeding network. When the fourth antenna array is set, the fourth antenna array and the third antenna array are located on the same side of the second reflector 70, and the fourth antenna array is fixedly arranged on the second reflector 70, and the fourth phase shifter 82 and the fourth antenna 81 are arranged on both sides of the second reflector 70.

[0038] It should be understood that Figures 4 to 7 The antenna array included in the antenna system shown in is only an example, and the number of antenna arrays and the specific combination method are not limited in the embodiments of the present application. Figure 6The second antenna array and the third antenna array shown in the figure are arranged in one antenna cover, and the first antenna array is arranged in another antenna cover. Alternatively, the second antenna array can be arranged in one antenna cover alone, and the first antenna array and the third antenna array can be arranged in one antenna cover. Alternatively, the first antenna array and the second antenna array can be arranged in one antenna cover, and the third antenna array can be arranged in one antenna cover alone. The first antenna array, the second antenna array, and the third antenna array can be arranged in any arrangement as needed, and the corresponding antenna covers can also be assembled accordingly according to the arrangement methods of the first antenna array, the second antenna array, and the third antenna array.

[0039] The embodiment of the present application also provides a base station, which includes any of the above antenna systems and a digital phase shifter connected to the antenna system. It can be seen from the above antenna system that the base station provided by the embodiment of the present application can add different modules to the antenna system as needed, thereby improving the communication performance of the existing base station and reducing the cost of base station modification.

[0040] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An antenna system, characterized in that: include: A first antenna array, a second antenna array and a first reflector; wherein the first antenna array and the second antenna array are antenna arrays operating in different frequency bands; The first antenna array and the second antenna array are stacked on a first reflector along a first direction; and the first antenna array and the second antenna array share the first reflector; The first direction is a direction perpendicular to the reflection surface of the first reflection plate; The antenna system further includes a first feeding network and a second feeding network, wherein the first feeding network feeds the first antenna array, the second feeding network feeds the second antenna array, and the second feeding network is arranged between the second antenna array and the first antenna array.

2. The antenna system according to claim 1, characterized in that The first antenna in the first antenna array is fixedly arranged on the reflecting surface of the first reflecting plate, and the second antenna in the second antenna array is arranged at a position away from the first reflecting plate, wherein the second antenna array is separated from the first antenna array and the first reflecting plate.

3. The antenna system according to claim 1, characterized in that The first feeding network is arranged on a side of the first reflecting plate away from the reflecting surface.

4. The antenna system according to any one of claims 1 to 3, characterized in that: It also includes a radome; the first antenna array, the second antenna array and the second feeding network are arranged in the radome.

5. The antenna system according to claim 4, characterized in that The antenna cover includes a first antenna cover and a second antenna cover. The first antenna array and the first reflector are arranged in the first antenna cover; the second antenna array and the second feeding network are arranged in the second antenna cover.

6. The antenna system according to claim 5, characterized in that The second antenna cover is an L-shaped cover body, the upper right corner of the second antenna cover has a notch, and the first antenna cover is arranged at the notch position of the second antenna cover.

7. The antenna system according to any one of claims 1 to 3, characterized in that: Also includes a second reflector; The second antenna array includes a second antenna of the first part and a second antenna of the second part; The second antenna of the first part is stacked with the first antenna array on the first reflector; The second antenna of the second part is arranged on the second reflecting plate.

8. The antenna system according to claim 7, characterized in that Also included is a third antenna array, wherein the first antenna array, the second antenna array and the third antenna array are antenna arrays operating in different frequency bands; The third antenna array and the second antenna of the second part are stacked on the second reflector.

9. The antenna system according to claim 8, characterized in that Also included is an antenna cover, the antenna cover includes a first antenna cover and a second antenna cover; The first antenna array and the first reflector are arranged in the first antenna cover; The second antenna array, the second feeding network, the third antenna array and the second reflector are arranged in the second antenna cover.

10. The antenna system according to claim 8, characterized in that Also included is an antenna cover, the antenna cover includes a first antenna cover and a second antenna cover; The second antenna of the first part, the second feeding network, the first antenna array and the first reflector are arranged in the first radome; The second antenna of the second part, the third antenna array and the second reflector are arranged in the second antenna cover.

11. The antenna system according to claim 10, characterized in that It also includes a phase shifter connected to the second feeding network, the phase shifter is arranged in the second antenna cover, and the second antenna of the first part located in the first antenna cover is connected to the phase shifter through a jumper.

12. The antenna system according to any one of claims 8 to 10, characterized in that: Also includes a fourth antenna array; the first antenna array, the second antenna array, the third antenna array and the fourth antenna array are antenna arrays operating in different frequency bands; The fourth antenna array, the second antenna array, and the third antenna array are stacked on the second reflector.

13. A base station, characterized in that: It comprises the antenna system as claimed in any one of claims 1 to 12, and a digital phase shifter connected to the antenna system.

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