Base station antenna and antenna system

Abstract

The present invention discloses a base station antenna and an antenna system, wherein the base station antenna comprises: a reflector, a low-frequency antenna array is arranged on the front of the reflector; a low-frequency phase shifter array and a low-frequency filter array are arranged on the back of the reflector; each column of the low-frequency antenna array is matched with two columns of the low-frequency filter array; the sides of each column of the low-frequency filter array are matched with two columns of low-frequency phase shifter arrays of different frequency bands; the two columns of low-frequency phase shifter arrays are arranged opposite to each other on the sides of the low-frequency filter; the orthographic projections of the low-frequency filter array and the low-frequency phase shifter array on the reflector are evenly arranged on both sides of the orthographic projection of the low-frequency antenna array on the reflector.

Description

Technical Field

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

[0002] In mobile communication networks, base station antennas are one of the key network devices, and their electrical performance indicators and product stability determine the customer's user experience.

[0003] At present, 4G base station antennas integrate multi-band design methods, and filters, as a typical frequency selection device, can effectively filter out useless signals. How to add filters to base station antennas to further improve the overall performance of base station antennas has become a technical problem that needs to be solved urgently in the industry. Summary of the invention

[0004] In order to at least solve the above technical problems, an object of the present invention is to provide a base station antenna with an integrated filter.

[0005] In order to achieve the above object, the base station antenna provided by the present invention includes: A reflector having a low-frequency antenna array disposed on the front side of the reflector; A low-frequency phase shifter array and a low-frequency filter array are provided on the back of the reflector; Each column of low-frequency antenna array is matched with two columns of low-frequency filter arrays; Each column of low-frequency filter array is matched on the side with two columns of low-frequency phase shifter arrays of different frequency bands; Two rows of low-frequency phase shifter arrays are arranged opposite to each other on the sides of the low-frequency filter; The orthographic projections of the low-frequency filter array and the low-frequency phase shifter array on the reflector are evenly arranged on both sides of the orthographic projection of the low-frequency antenna array on the reflector.

[0006] Furthermore, the orthographic projections of the low-frequency filter array and the low-frequency phase shifter array on the reflector are symmetrically arranged on both sides of the orthographic projection of the low-frequency antenna array on the reflector.

[0007] Furthermore, the low-frequency antenna array includes a plurality of low-frequency dipole components; Each column of the low-frequency phase shifter array includes a plurality of low-frequency phase shifters; Each column of the low-frequency filter array includes a plurality of low-frequency filters; The low-frequency filter includes a first connecting terminal and two second connecting terminals; The first connecting terminal is connected to the low-frequency oscillator component; and the two second connecting terminals are respectively connected to low-frequency phase shifters of two different frequency bands.

[0008] Furthermore, the first connection terminal is connected to the low-frequency vibrator assembly by plugging or welding; The two second connection terminals are respectively connected to two low-frequency phase shifters of different frequency bands by plugging or welding.

[0009] Furthermore, it also includes: a low-frequency filter fixing seat; The low-frequency filter is fixed on the low-frequency filter fixing seat; The low-frequency filter fixing seat is fixedly connected to the back side of the reflecting plate.

[0010] Furthermore, the low-frequency phase shifter is fixed on the low-frequency filter fixing seat.

[0011] Further, the orthographic projection of the low-frequency phase shifter array on the reflector covers the orthographic projection of the low-frequency filter array on the reflector; or, The orthographic projection of the low-frequency phase shifter array on the reflector is located on the side of the orthographic projection of the low-frequency filter array on the reflector.

[0012] Furthermore, a high-frequency antenna array and a high-frequency phase shifter array are also provided on the front side of the reflector; The high frequency antenna array is connected to the high frequency phase shifter array; The high frequency phase shifter array is fixed on the front side of the reflector.

[0013] Furthermore, two columns of high-frequency antenna arrays are provided on both sides of each column of low-frequency antenna arrays; The low-frequency antenna array, the high-frequency antenna array, the low-frequency phase shifter array and the low-frequency filter array are all arranged in parallel.

[0014] To achieve the above-mentioned purpose, the antenna system provided in the present application includes: the above-mentioned base station antenna.

[0015] The base station antenna of the embodiment of the present application includes: a reflector, a low-frequency antenna array is arranged on the front of the reflector; a low-frequency phase shifter array and a low-frequency filter array are arranged on the back of the reflector; each column of the low-frequency antenna array is matched with two columns of low-frequency filter arrays; the side of each column of the low-frequency filter array is matched with two columns of low-frequency phase shifter arrays of different frequency bands; the two columns of low-frequency phase shifter arrays are arranged opposite to each other on the side of the low-frequency filter; the positive projections of the low-frequency filter array and the low-frequency phase shifter array on the reflector are evenly arranged on both sides of the positive projection of the low-frequency antenna array on the reflector. The base station antenna of the embodiment of the present application adds a low-frequency filter, and also avoids the phenomenon of disorderly connection between the low-frequency filter and the low-frequency phase shifter through flying wires; it also avoids the phenomenon of disorderly connection between the low-frequency filter and the low-frequency oscillator assembly through flying wires, so that the interior of the base station antenna is tidy, the use of cables is reduced, and the weight and production cost of the base station antenna are reduced; compared with the connection method of cable flying wires, the corresponding loss is reduced, and the gain characteristics of the entire antenna are improved; the assembly process is simplified, and the production efficiency and market competitiveness are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings: Figure 1 is an exploded diagram of a base station antenna according to an embodiment of the present application; Figure 2 is a side view of a base station antenna according to an embodiment of the present application; Figure 3 is a structural diagram of a low-frequency filter fixing seat according to an embodiment of the present application; Figure 4 An exploded diagram of a base station antenna according to another embodiment of the present application; Figure 5 is a side view of a base station antenna according to another embodiment of the present application; Figure 6 yes Figure 4 A structural schematic diagram of the low-frequency phase shifter array and the low-frequency filter being fixed on a low-frequency filter fixing base.

[0017] Description of reference numerals: 101-reflection plate; 102-high frequency phase shifter array; 103-high frequency vibrator assembly; 104-low frequency vibrator assembly; 105-low frequency phase shifter array; 106-low frequency filter; 107-low frequency filter fixing seat; 108-first connecting terminal; 109-port. DETAILED DESCRIPTION

[0018] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as being limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are only for exemplary purposes and are not intended to limit the scope of protection of the present application.

[0019] It should be understood that the various steps described in the method implementation of the present application can be performed in different orders and / or performed in parallel. In addition, the method implementation may include additional steps and / or omit the steps shown. The scope of the present application is not limited in this respect.

[0020] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "based on" means "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0021] It should be noted that the modifications of "one" and "plurality" mentioned in this application are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more". "Plurality" should be understood as two or more.

[0022] Embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0023] An embodiment of the present application provides a base station antenna, including: A reflector having a low-frequency antenna array disposed on the front side of the reflector; A low-frequency phase shifter array and a low-frequency filter array are provided on the back of the reflector; Each column of low-frequency antenna array is matched with two columns of low-frequency filter arrays; Each column of low-frequency filter array is matched on the side with two columns of low-frequency phase shifter arrays of different frequency bands; Two rows of low-frequency phase shifter arrays are arranged opposite to each other on the sides of the low-frequency filter; The orthographic projections of the low-frequency filter array and the low-frequency phase shifter array on the reflector are evenly arranged on both sides of the orthographic projection of the low-frequency antenna array on the reflector.

[0024] Example 1 Figure 1 is an exploded diagram of a base station antenna according to an embodiment of the present application, Figure 2 is a side view of a base station antenna according to an embodiment of the present application, Figure 3 is a structural diagram of a low-frequency filter fixing seat according to an embodiment of the present application, Figure 4 This is an exploded diagram of a base station antenna according to another embodiment of the present application. Figure 5 is a side view of a base station antenna according to another embodiment of the present application, Figure 6 yes Figure 4 The schematic diagram of the structure when the low-frequency phase shifter array and the low-frequency filter are fixed on the low-frequency filter fixing seat is shown below. Figure 1-6 , the base station antenna of the embodiment of the present application is described in detail.

[0025] In an exemplary implementation, the base station antenna of the embodiment of the present application includes: a reflector 101 .

[0026] In an exemplary embodiment, the reflective plate 101 is, for example, a metal reflective plate.

[0027] In an exemplary embodiment, a low-frequency antenna array is disposed on the front surface of the reflector 101 .

[0028] In an exemplary implementation, the low-frequency antenna arrays described in the embodiments of the present application all refer to a column of low-frequency vibrator components 104, which can be understood as a column of low-frequency vibrator components 104 constituting a column of low-frequency antenna arrays.

[0029] In an exemplary embodiment, as required, the low-frequency antenna array has at least one column. When the low-frequency antenna array has two columns, Figure 1 , Figure 2 , Figure 4 as well as Figure 5 shown.

[0030] In an exemplary implementation, each column of the low-frequency antenna array includes a plurality of low-frequency dipole components 104 .

[0031] In an exemplary embodiment, a low-frequency phase shifter array 105 and a low-frequency filter array are disposed on the back of the reflector 101 .

[0032] In an exemplary implementation, the low-frequency phase shifter array 105 in the embodiment of the present application refers to a column of low-frequency phase shifters, which can be understood as a column of low-frequency phase shifters constituting a column of the low-frequency phase shifter array 105 .

[0033] In an exemplary embodiment, each column of the low frequency phase shifter array 105 includes a plurality of low frequency phase shifters. In an exemplary embodiment, each column of the low frequency filter array includes a plurality of low frequency filters 106 .

[0034] In an exemplary implementation, the low-frequency filter array in the embodiment of the present application is composed of a column of low-frequency filters 106 , that is, a column of low-frequency filters 106 constitutes a column of low-frequency filter array.

[0035] In an exemplary implementation, the low-frequency filter 106 in the embodiment of the present application is a cavity filter.

[0036] In an exemplary embodiment, each column of low-frequency antenna arrays is matched with two columns of low-frequency filter arrays, which can be understood as two columns of low-frequency filter arrays are provided at corresponding positions of each column of low-frequency antenna arrays on the back of the reflector 101 .

[0037] In an exemplary embodiment, each column of low-frequency filter array is matched with two columns of low-frequency phase shifter arrays 105 of different frequency bands on its side. Figure 1 , Figure 2 , Figure 4 as well as Figure 5 shown.

[0038] In an exemplary embodiment, two columns of low frequency phase shifter arrays 105 of different frequency bands are arranged opposite to each other on the sides of the low frequency filter array, for example, two columns of low frequency phase shifter arrays 105 of different frequency bands are arranged opposite to each other on both sides of the low frequency filter array.

[0039] In an exemplary embodiment, the orthographic projections of the low-frequency filter array and the low-frequency phase shifter array 105 on the reflector 101 are evenly arranged on both sides of the orthographic projection of the low-frequency antenna array on the reflector 101 .

[0040] In an exemplary embodiment, the orthographic projections of the low-frequency filter array and the low-frequency phase shifter array 105 on the reflector 101 are symmetrically arranged on both sides of the orthographic projection of the low-frequency antenna array on the reflector 101; it can be understood that the orthographic projections of the two columns of low-frequency filter arrays on the reflector 101 and the orthographic projections of the four columns of low-frequency phase shifter arrays 105 on the reflector 101 are symmetrically arranged on both sides of the orthographic projection of the low-frequency antenna array on the reflector 101, such as Figure 2 and Figure 5 shown; Figure 2 The low-frequency filter array and the low-frequency phase shifter array 105 in the embodiment can be understood as being placed horizontally on the back of the reflector 101. Figure 5 The low-frequency filter array and the low-frequency phase shifter array 105 can be understood as being vertically arranged on the back of the reflector 101 .

[0041] In an exemplary embodiment, each column of the low frequency filter array includes a plurality of low frequency filters 106 .

[0042] In an exemplary embodiment, one low frequency oscillator assembly 104 is configured with two low frequency filters 106 .

[0043] In an exemplary embodiment, the low frequency filter 106 includes a first connection terminal 108 and two second connection terminals. It can be understood that a first connection terminal 108 is provided at one end of the low frequency filter 106, and two second connection terminals are provided at the other end of the low frequency filter 106.

[0044] In an exemplary embodiment, the first connecting terminal 108 is connected to the low-frequency vibrator component 104 , that is, one first connecting terminal 108 matches one low-frequency vibrator component 104 .

[0045] In an exemplary embodiment, the two second connection terminals are respectively connected to low-frequency phase shifters of two different frequency bands.

[0046] In an exemplary embodiment, the low-frequency filter 106 is directly connected to the low-frequency vibrator assembly 104, where the direct connection means a cable-free connection, that is, the first connecting terminal 108 is connected to the low-frequency vibrator assembly 104 by plugging or welding; that is, the low-frequency filter 106 can be directly connected to the low-frequency vibrator assembly 104 by plugging or welding through the reflective plate 101 via the first connecting terminal 108 arranged thereon.

[0047] In an exemplary embodiment, the two second connection terminals are respectively connected to the low-frequency phase shifters of two different frequency bands by plugging or welding; that is, the two low-frequency phase shifters of different frequency bands are each provided with a port 109 matching the second connection terminal, and the second connection terminal is connected to the port 109 by plugging or welding.

[0048] In an exemplary implementation, because one low-frequency filter 106 matches two low-frequency phase shifters of different frequency bands, each low-frequency filter 106 is provided with two second connection terminals, each of which is connected to a low-frequency phase shifter matching its frequency band.

[0049] In an exemplary implementation, the base station antenna of the embodiment of the present application further includes: a low-frequency filter fixing seat 107 .

[0050] In an exemplary implementation, the low-frequency filter 106 is fixed on the low-frequency filter fixing seat 107 , for example, the low-frequency filter 106 is clipped on the low-frequency filter fixing seat 107 .

[0051] In an exemplary implementation, the low-frequency filter fixing seat 107 is fixedly connected to the back side of the reflector 101 , for example, the low-frequency filter fixing seat 107 is clamped on the back side of the reflector 101 .

[0052] In an exemplary implementation, the low-frequency phase shifter is fixed on the low-frequency filter fixing base 107 , for example, the low-frequency phase shifter is clamped on the low-frequency filter fixing base 107 .

[0053] In an exemplary embodiment, the orthographic projection of the low-frequency phase shifter array 105 on the reflector 101 covers the orthographic projection of the low-frequency filter array on the reflector 101, which can be understood as the low-frequency phase shifter and the low-frequency filter 106 are arranged in a horizontal manner on the back of the reflector 101, such as Figure 1 and Figure 2 shown.

[0054] In an exemplary embodiment, the orthographic projection of the low-frequency phase shifter array 105 on the reflector 101 is located on the side of the orthographic projection of the low-frequency filter array on the reflector 101. It can be understood that the low-frequency phase shifter and the low-frequency filter 106 are arranged vertically on the back of the reflector 101. Figure 4 and Figure 5 shown.

[0055] In an exemplary embodiment, in the base station antenna of an embodiment of the present application, when the low-frequency vibrator component 104 receives a signal, the signal diverted by the low-frequency filter 106 enters low-frequency phase shifters of different frequency bands respectively, and then the low-frequency phase shifter outputs the signal; conversely, when the low-frequency vibrator component 104 outputs a signal, two low-frequency phase shifters of different frequency bands input the signal into the low-frequency filter 106, and then enter the low-frequency vibrator component 104 for output.

[0056] In an exemplary embodiment, the low-frequency filter 106 of the embodiment of the present application is provided with two second connecting terminals of different frequency bands, and the two second connecting terminals of different frequency bands are respectively matched with low-frequency phase shifters of corresponding frequency bands, that is, the low-frequency phase shifters arranged on both sides of the low-frequency filter 106 are low-frequency phase shifters of different frequency bands.

[0057] In an exemplary embodiment, optionally, a high-frequency antenna array and a high-frequency phase shifter array 102 are further provided on the front side of the reflector 101; it can be understood that, as needed, the base station antenna of the embodiment of the present application may not have a high-frequency antenna array, that is, only a low-frequency antenna array, and a high-frequency antenna array may be optionally added as needed.

[0058] In an exemplary implementation, the high-frequency antenna array in the embodiment of the present application refers to a column of high-frequency vibrator components 103, which can be understood as a column of high-frequency vibrator components 103 constituting a column of high-frequency antenna array.

[0059] In an exemplary embodiment, the high frequency antenna array is connected to the high frequency phase shifter array 102 .

[0060] In an exemplary embodiment, the high-frequency phase shifter array 102 is fixed on the front side of the reflective plate 101 .

[0061] In an exemplary embodiment, two columns of high-frequency antenna arrays are disposed on both sides of each column of low-frequency antenna arrays.

[0062] In an exemplary embodiment, the low-frequency antenna array, the high-frequency antenna array, the low-frequency phase shifter array 105 and the low-frequency filter array are all arranged in parallel.

[0063] In an exemplary implementation, each column of the high-frequency antenna array includes a plurality of high-frequency dipole components 103 .

[0064] In an exemplary implementation, each column of the high-frequency phase shifter array 102 includes a plurality of high-frequency phase shifters.

[0065] In an exemplary embodiment, the number of high-frequency dipole components 103 in each column of the high-frequency antenna array is twice the number of low-frequency dipole components 104 in the adjacent low-frequency antenna array.

[0066] In an exemplary implementation, each column of the high-frequency antenna array is matched with a column of the high-frequency phase shifter array 102 .

[0067] In an exemplary implementation, the operating frequency band of the low-frequency vibrator assembly 104 of the embodiment of the present application is in the range of 620-1000 MHz.

[0068] In an exemplary implementation, the operating frequency band of the high frequency vibrator assembly 103 of the embodiment of the present application is in the range of 1700-3000 MHz.

[0069] In an exemplary implementation, the high-frequency antenna array in the base station antenna of the embodiment of the present application may be two columns, such as Figure 1 , Figure 2 , Figure 4 as well as Figure 5 shown.

[0070] Example 2 Embodiment 2 is an antenna system, comprising the base station antenna of the above embodiment.

[0071] Although the embodiments disclosed in the present invention are as above, the contents are only embodiments adopted to facilitate understanding of the present invention and are not intended to limit the present invention. Any technician in the field to which the present invention belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the present invention, but the patent protection scope of the present invention shall still be subject to the scope defined in the attached claims.

Claims

1. A base station antenna, characterized in that: include: A reflector, wherein a low-frequency antenna array is provided on the front side of the reflector; A low-frequency phase shifter array and a low-frequency filter array are provided on the back of the reflector; Each column of the low-frequency antenna array is matched with two columns of the low-frequency filter array; The sides of each column of the low-frequency filter array are matched with two columns of the low-frequency phase shifter arrays of different frequency bands; The two columns of low-frequency phase shifter arrays of different frequency bands are arranged opposite to each other on both sides of the low-frequency filter array; The orthographic projections of the low-frequency filter array and the low-frequency phase shifter array on the reflector are evenly arranged on both sides of the orthographic projection of the low-frequency antenna array on the reflector; The low-frequency filters in the low-frequency filter array are cavity filters; The low-frequency antenna array includes a low-frequency vibrator component; The low-frequency filter comprises a first connecting terminal and two second connecting terminals; The first connecting terminal is directly connected to the low-frequency vibrator component; The two second connection terminals are directly connected to the low-frequency phase shifters of two different frequency bands respectively.

2. The base station antenna according to claim 1, characterized in that: The orthographic projections of the low-frequency filter array and the low-frequency phase shifter array on the reflector are symmetrically arranged on both sides of the orthographic projection of the low-frequency antenna array on the reflector.

3. The base station antenna according to claim 2, characterized in that: The low-frequency antenna array includes a plurality of low-frequency vibrator components; Each column of the low-frequency phase shifter array includes a plurality of low-frequency phase shifters; Each column of the low-frequency filter array includes a plurality of low-frequency filters.

4. The base station antenna according to claim 3, characterized in that: The first connecting terminal is connected to the low-frequency vibrator component by plugging or welding; The two second connection terminals are respectively connected to the low-frequency phase shifters of two different frequency bands by plugging or welding.

5. The base station antenna according to claim 4, characterized in that: Also included are: a low frequency filter fixing seat; The low-frequency filter is fixed on the low-frequency filter fixing seat; The low-frequency filter fixing seat is fixedly connected to the back side of the reflecting plate.

6. The base station antenna according to claim 5, characterized in that: The low-frequency phase shifter is fixed on the low-frequency filter fixing seat.

7. The base station antenna according to claim 3, characterized in that: The orthographic projection of the low-frequency phase shifter array on the reflector covers the orthographic projection of the low-frequency filter array on the reflector; or, The orthographic projection of the low-frequency phase shifter array on the reflective plate is located on the side of the orthographic projection of the low-frequency filter array on the reflective plate.

8. The base station antenna according to claim 1, characterized in that: The front side of the reflector is also provided with a high-frequency antenna array and a high-frequency phase shifter array; The high-frequency antenna array is connected to the high-frequency phase shifter array; The high-frequency phase shifter array is fixed on the front side of the reflection plate.

9. The base station antenna according to claim 8, characterized in that: Two columns of the high-frequency antenna arrays are provided on both sides of each column of the low-frequency antenna arrays; The low-frequency antenna array, the high-frequency antenna array, the low-frequency phase shifter array and the low-frequency filter array are all arranged in parallel.

10. An antenna system, characterized in that: The base station antenna comprises any one of claims 1 to 9.

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