A base station antenna

Abstract

The present application relates to the field of mobile communication technology, and in particular to a base station antenna. The base station antenna comprises: a reflector, a cavity phase shifter and a vibrator; the cavity phase shifter is fixed to the first surface and / or the second surface of the reflector, the vibrator is arranged on the surface of the reflector or the cavity of the cavity phase shifter through a vibrator fixing seat, the ground end of the vibrator is welded to the vibrator fixing seat, the transmission end of the vibrator extends to the inside of the cavity phase shifter and is welded to the transmission line layer of the cavity phase shifter, the transmission line layer is arranged relatively parallel to the reflector, and the position of the cavity phase shifter and the reflector corresponding to the transmission end of the vibrator is provided with an auxiliary welding through hole. The base station antenna of the present application, while realizing the de-cable, optimizes the connection method between the vibrator, the cavity phase shifter and the reflector, facilitates the assembly and manufacture of the base station antenna, makes the assembly simple, and greatly improves the assembly efficiency.

Description

Technical Field

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

[0002] In mobile communication networks, base station antennas are one of the key network devices. Their main function is to transmit wireless signals from base stations to user terminal devices. Base station antennas usually include three core components: a radiation unit connected by a coaxial cable, a cavity phase shifter, and a power division network.

[0003] Since coaxial cables are used to connect the three core components, the base station antenna occupies a large space and has high gain loss. In order to achieve the de-cabled base station antenna, the existing technology mostly directly connects the radiation unit, power division network and cavity phase shifter to assemble into a large component, and then installs the large component by opening a large-sized installation groove on the front of the installation reflector. Although this method achieves the de-cabled base station antenna to a certain extent and saves space for the base station antenna, on the one hand, this method requires a large-sized installation groove to be opened on the reflector, which greatly affects the strength of the base station antenna. On the other hand, it needs to be assembled into a large component first, which is cumbersome to assemble and has low manufacturing efficiency. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the purpose of the present application is to provide a base station antenna that is cable-free and easy to install and manufacture.

[0005] To achieve the above object, the present application provides a base station antenna, including:

[0006] A reflecting plate, a cavity phase shifter and an oscillator; the cavity phase shifter is fixed to a first surface and / or a second surface of the reflecting plate which are arranged opposite to each other; the oscillator is arranged on the surface of the reflecting plate or the cavity of the cavity phase shifter through an oscillator fixing seat; the grounding end of the oscillator is welded to the oscillator fixing seat; the transmission end of the oscillator extends to the interior of the cavity phase shifter and is welded to the transmission line layer of the cavity phase shifter; the transmission line layer is arranged parallel to the reflecting plate; auxiliary welding through holes are arranged on the cavity phase shifter and the reflecting plate at positions corresponding to the transmission end of the oscillator.

[0007] Furthermore, two first cavity phase shifters are fixedly connected at intervals on the first surface of the reflecting plate, and a second cavity phase shifter is fixed on the second surface of the reflecting plate. A plurality of first-type vibrators are fixed on the cavity of each of the first-type cavity phase shifters through the vibrator fixing seat along the extension direction of the reflecting plate, and the grounding end of each of the first-type vibrators is welded to the corresponding vibrator fixing seat, and the transmission end of each of the first-type vibrators passes through the corresponding vibrator fixing seat, the cavity of the first cavity phase shifter and is welded to the transmission line layer inside the first cavity phase shifter in sequence; a plurality of second-type vibrators are also fixed on the first surface of the reflecting plate between the two first cavity phase shifters through the vibrator fixing seat, and the grounding end of the second-type vibrator is welded to the corresponding vibrator fixing seat, and the transmission end of the second-type vibrator passes through the corresponding vibrator fixing seat, the reflecting plate and the cavity of the second cavity phase shifter in sequence and is welded to the transmission line layer inside the second cavity phase shifter.

[0008] Furthermore, the reflector is integrally formed with the cavity of each cavity phase shifter.

[0009] Furthermore, the first type of vibrator is a high-frequency vibrator, and the second type of vibrator is a low-frequency vibrator.

[0010] Furthermore, the vibrator fixing seat is fixed by screws or rivets.

[0011] Furthermore, the first type of vibrator and the second type of vibrator include any one of a PCB vibrator, a die-cast vibrator and a sheet metal vibrator.

[0012] Furthermore, folded edges perpendicular to the first surface are provided on both sides of the reflective plate, and the folded edges are integrally formed with the reflective plate.

[0013] Furthermore, the vibrator fixing seat includes any one of a metal plate and a PCB board.

[0014] To achieve the above objectives, the present application also provides an antenna system, including the base station antenna as described above.

[0015] Compared with the prior art, the base station antenna of the present application has the following technical effects:

[0016] The base station antenna of the present application achieves cable removal while optimizing the connection method between the oscillator, the cavity phase shifter and the reflector, which facilitates the assembly and manufacture of the base station antenna, simplifies the assembly and greatly improves the assembly efficiency.

[0017] In the base station antenna of the present application, the cavity phase shifter can be installed on the reflector in an up-and-down staggered arrangement, which optimizes the space occupied by the entire antenna, greatly reduces the height of the antenna, and realizes the miniaturization of the antenna.

[0018] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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:

[0020] Figure 1 This is a three-dimensional schematic diagram of a base station antenna according to Embodiment 1 of the present application;

[0021] Figure 2 This is an exploded diagram of the base station antenna of Example 1 of the present application;

[0022] Figure 3 A side view of the base station antenna of Embodiment 1 of the present application;

[0023] Figure 4 This is a bottom view of the base station antenna of Embodiment 1 of the present application;

[0024] Figure 5 for Figure 4 The enlarged schematic diagram of point A in the middle;

[0025] Figure 6 for Figure 4 The enlarged schematic diagram of point B in the middle;

[0026] Figure 7 A schematic diagram of the connection of the vibrator of Example 1 of the present application;

[0027] Figure 8 A schematic structural diagram of a cavity phase shifter according to Example 1 of the present application;

[0028] Fig. 9 A three-dimensional schematic diagram of a base station antenna according to Embodiment 2 of the present application;

[0029] Fig.10 A schematic structural diagram of a reflector according to application example 2;

[0030] Fig.11 A side view of the reflector of application embodiment 2;

[0031] In the figure: 1-reflection plate, 2-first cavity phase shifter, 3-second cavity phase shifter, 4-first type vibrator, 5-second type vibrator, 6-vibrator fixing seat, 7-transmission line layer, 8-cavity, 9-auxiliary welding through hole, 21-radiating plate, 22-balun, 23-grounding terminal, 24-transmission terminal, 11-folded edge, 100-integrally molded reflection plate. DETAILED DESCRIPTION

[0032] 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.

[0033] 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.

[0034] 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.

[0035] 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.

[0036] It should be noted that "some body" or "some part" can be a part of the corresponding "component", that is, "some body" or "some part" can be integrally formed with the "other parts of the component"; it can also be an independent component that can be separated from the "other parts of the component", that is, "some body" or "some part" can be manufactured independently and then combined with the "other parts of the component" into a whole. The expression of the above-mentioned "some body" or "some part" in this application is only one of the embodiments, for the convenience of reading, and not to limit the scope of protection of this application. As long as it contains the above-mentioned features and has the same function, it should be understood as an equivalent technical solution of this application.

[0037] Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0038] Example 1

[0039] An embodiment of the present application provides a base station antenna. Figure 1-Figure 8 The base station antenna of the present application is described in detail, including:

[0040] A reflector 1, wherein the reflector 1 has a first surface and a second surface (i.e., an upper surface and a lower surface) arranged opposite to each other, two first cavity phase shifters 2 are fixedly connected to the first surface (i.e., the upper surface) of the reflector 1 at intervals, a second cavity phase shifter 3 is fixed to the second surface of the reflector 1, a plurality of first-type vibrators 4 are fixed to the cavity of each first-type cavity phase shifter 2 along the extension direction of the reflector 1 through a vibrator fixing seat 6, a grounding end 23 of each first-type vibrator 4 is welded to the corresponding vibrator fixing seat 6, and a transmission end of each first-type vibrator 4 passes through the corresponding vibrator fixing seat 6, the cavity of the first cavity phase shifter 2, and the transmission line layer 7 inside the first cavity phase shifter 2 is welded in sequence. In addition, a plurality of second-type vibrators 5 are fixed to the first surface of the reflecting plate 1 between the two first cavity phase shifters 2 through a vibrator fixing seat 6. The grounding end of the second-type vibrator 5 is welded to the corresponding vibrator fixing seat 6. The transmission end of the second-type vibrator 5 passes through the corresponding vibrator fixing seat 6, the reflecting plate 1 and the cavity of the second cavity phase shifter 3 in sequence and is welded to the transmission line layer 7 inside the second cavity phase shifter 3. The transmission line layer 7 is arranged parallel to the reflecting plate 1. Auxiliary welding through holes 9 are arranged at positions corresponding to the transmission ends of the vibrators on each cavity phase shifter and the reflecting plate 1.

[0041] See also Figure 4-Figure 6 The auxiliary welding through holes 9 can be arranged one by one with the transmission ends of the vibrator, that is, one transmission end 24 corresponds to one auxiliary welding through hole 9, such as Figure 5 As shown; the auxiliary welding through hole 9 can also correspond to one auxiliary welding through hole 9 for one vibrator, such as Figure 6 shown.

[0042] In this embodiment, after the vibrator fixing base 6 is fixed, the transmission line layer 7 and the transmission end 24 can be welded through the auxiliary welding through holes 9 on the back of the base station antenna.

[0043] like Figure 7 As shown, no matter it is the first type of vibrator 4 or the second type of vibrator 5, as a vibrator, it is usually composed of a radiation plate 21 and a balun 22. One end of the balun 22 is a grounding end 23, and the other end is a transmission end 24. When connected to the vibrator fixing base 6, the grounding end 23 is welded to the vibrator fixing base 6, and the transmission end 24 will extend to the inside of the corresponding cavity phase shifter and be welded to the transmission line layer.

[0044] In this embodiment, the first cavity phase shifter 2 and the second cavity phase shifter 3 are any cavity phase shifters that can realize the phase shifting function. The cavity phase shifter generally includes a cavity 8, a transmission line layer 7, a dielectric slider A, a dielectric slider B, a connecting rod and a transmission adapter, etc. The cavity 8 is used to basically isolate its interior from the outside world. The transmission line layer 7 is used for signal processing (power division) and phase shift control. The cavity 8 can be made of the same material as the reflector 1. The dielectric slider A, the dielectric slider B, the connecting rod and the transmission adapter are conventional structures that constitute the cavity phase shifter. The present application does not involve the modification of these structures, which will not be repeated here.

[0045] In some other embodiments, the cavity 8 of the cavity phase shifter may be formed of sheet metal and / or metallized plastic.

[0046] See also Figure 8 In this embodiment, the transmission line layer 7 is arranged relatively parallel to the reflector 1, that is, under the premise that the cavity 8 of the entire cavity phase shifter can be flat, the surface where the transmission line layer 7 is located can have a certain degree of parallelism with the surface where the reflector 1 is located relative to the reference parallel plane.

[0047] In some other implementations, the transmission line layer 7 may also integrate filtering, combining, impedance matching, phase compensation and other functions, which will not be described in detail here.

[0048] In this embodiment, the vibrator fixing base 6 is a PCB board, and the vibrator fixing base 6 is fixed by screws or rivets.

[0049] In some other embodiments, the vibrator fixing base 6 may also be a metal plate.

[0050] It is understandable that the shape and size of the vibrator fixing seat 6 can be adjusted accordingly according to the type and size of the vibrator to be fixed.

[0051] In this embodiment, folded edges 11 perpendicular to the first surface are provided on both sides of the reflective plate 1. The folded edges 11 are integrally formed with the reflective plate 1 to improve the isolation between different columns. However, when the base station antenna is in one column, the folded edges 11 mainly improve the radiation pattern index and can enhance the performance of the base station antenna.

[0052] In this embodiment, the first type of vibrator 4 is a high frequency vibrator, and the second type of vibrator 5 is a low frequency vibrator. The vibrator can be any one of a PCB vibrator, a die-cast vibrator and a sheet metal vibrator.

[0053] In this embodiment, the transmission line layer 7 may be in the form of a sheet metal strip or a PCB.

[0054] In this embodiment, the two first cavity phase shifters 2 are both arranged on the first surface of the reflecting plate 1, so that the base station antenna realizes a flat arrangement of positive and negative polarization cavities, and the second cavity phase shifter 3 is arranged on the second surface of the reflecting plate 1 to form an arrangement that is staggered up and down, thereby optimizing the space occupied by the entire antenna, greatly reducing the height of the antenna, and realizing the miniaturization of the antenna.

[0055] It should be noted that the number and position of the first cavity phase shifter 2 and the second cavity phase shifter 3 can also be adaptively adjusted according to the actual needs of the base station antenna. For example, in some other embodiments, the first cavity phase shifter 2 and the second cavity phase shifter 3 can also be arranged on the same surface of the reflector 1. For example, in some other embodiments, three first cavity phase shifters 2 are arranged on the first surface of the reflector 1, and two second cavity phase shifters 3 are arranged on the second surface of the reflector 1.

[0056] Example 2

[0057] An embodiment of the present application provides a base station antenna. Figure 9-11 The base station antenna of the present application is described in detail. The difference between Embodiment 2 of the present application and Embodiment 1 is that:

[0058] In Example 2 of the present application, the reflection plate in Example 1 and the cavity of each cavity phase shifter are integrally formed to form an integrally formed reflection plate 100 .

[0059] Embodiment 2 of the present application uses an integrally formed reflector plate, thereby further simplifying assembly and improving assembly efficiency; at the same time, it can further reduce the height of the base station antenna.

[0060] The above description is only a partial embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in this application (but not limited to) by each other to form a technical solution.

[0061] In addition, although each operation is described in a specific order, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be construed as limiting the scope of the application. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0062] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A base station antenna, characterized in that: include: A reflector, a cavity phase shifter and an oscillator; the cavity phase shifter comprises a first cavity phase shifter and a second cavity phase shifter, and the oscillator comprises a first type of oscillator and a second type of oscillator; Wherein, two first-cavity phase shifters are fixedly connected to the first surface of the reflecting plate at intervals, a plurality of first-type vibrators are fixed to the cavity of each first-cavity phase shifter along the extension direction of the reflecting plate through a vibrator fixing seat, a grounding end of each first-type vibrator is welded to the corresponding vibrator fixing seat, and a transmission end of each first-type vibrator passes through the corresponding vibrator fixing seat, the cavity of the first cavity phase shifter and the transmission line layer inside the first cavity phase shifter in sequence and is welded; A second cavity phase shifter is fixed on the second surface of the reflecting plate, and a plurality of second-type vibrators are fixed on the first surface of the reflecting plate between the two first-type cavity phase shifters through the vibrator fixing seat, and the grounding end of the second-type vibrator is welded to the corresponding vibrator fixing seat, and the transmission end of the second-type vibrator passes through the corresponding vibrator fixing seat, the reflecting plate and the cavity of the second cavity phase shifter in sequence and is welded to the transmission line layer inside the second cavity phase shifter; Wherein, the transmission line layer inside the cavity phase shifter is arranged relatively parallel to the reflector; Wherein, auxiliary welding through holes are arranged at positions corresponding to the transmission ends of the vibrators on the cavity phase shifter and the reflector.

2. The base station antenna according to claim 1, characterized in that: The first type of vibrator is a high frequency vibrator, and the second type of vibrator is a low frequency vibrator.

3. The base station antenna according to claim 1, characterized in that: The first type of vibrator and the second type of vibrator include any one of a PCB vibrator, a die-cast vibrator and a sheet metal vibrator.

4. The base station antenna according to claim 1, characterized in that: The vibrator fixing seat is fixed by screws or rivets.

5. The base station antenna according to claim 1, characterized in that: The vibrator fixing seat includes any one of a metal plate and a PCB board.

6. The base station antenna according to claim 1, characterized in that: Folding edges perpendicular to the first surface are arranged on both sides of the reflective plate, and the folding edges are integrally formed with the reflective plate.

7. The base station antenna according to claim 1, characterized in that: The reflection plate is integrally formed with the cavity of each cavity phase shifter.

8. An antenna system, characterized in that: include: The base station antenna according to any one of claims 1 to 7.

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