Phase shifter and antenna

Abstract

The utility model discloses a phase shifter and an antenna, and belongs to the technical field of antennas. The phase shifter comprises a cavity, a phase shifting assembly and a feed assembly. The phase shifting assembly is assembled in the cavity, the feed assembly comprises an electroplated coupling piece, the coupling piece is detachably assembled on the cavity, the coupling piece and the cavity are coupled and are in common ground, the cavity can be electrically connected with an outer conductor of the feed line through the electroplated coupling piece, and the phase shifting assembly can be electrically connected with an inner conductor of the feed line. According to the utility model, the electroplating coupling piece is connected with the outer conductor of the feeder line, so that the cost can be saved, and meanwhile, the problems of cavity deformation and the like caused by adopting an electroplating rivet pressing piece can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of antennas, in particular to a phase shifter and an antenna. Background Art

[0002] The phase shifter is the core component of the base station antenna. It includes a cavity and a phase shifting component arranged in the cavity for phase adjustment. The performance of the phase shifter directly affects the signal quality of the antenna network. In actual application, the phase shifter needs to be connected to the feeder for signal transmission. The feeder here includes an inner conductor and an outer conductor arranged outside the inner conductor.

[0003] At present, when the phase shifter is connected to the feeder, the cavity of the phase shifter and the outer conductor of the feeder can be connected by direct welding or by electroplating rivets. When the cavity and the outer conductor are directly welded, the cavity needs to be electroplated as a whole, which will lead to problems such as increased production costs and low production efficiency.

[0004] When the cavity is connected to the outer conductor through an electroplated rivet, the rivet needs to be riveted to the cavity by external force after electroplating, and the rivet is further welded to the outer conductor, and the inner conductor is bent and welded to the phase shifter in the cavity. Although this method can avoid the problems caused by the overall electroplating of the cavity, it is necessary to press the rivet onto the cavity by external force, which can easily lead to risks such as deformation of the cavity under stress, loosening of the rivet, and insufficient bonding force between the rivet and the cavity, affecting the performance of the phase shifter after assembly. In addition, when rework is required or adjustments are made to the phase shifter component, the feeder needs to be disconnected from the phase shifter first, that is, the connection between the inner and outer conductors needs to be disconnected. Due to the cavity, this method is not conducive to the disassembly of the inner conductor or requires destructive disassembly, which is time-consuming and labor-intensive and not conducive to operation.

[0005] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0006] The purpose of the utility model is to provide a phase shifter, which can save costs while avoiding the problems of cavity deformation caused by electroplating riveted parts.

[0007] The utility model aims to provide an antenna, including the above-mentioned phase shifter, which can save costs and also avoid the problems such as cavity deformation caused by the use of electroplated riveted parts.

[0008] To achieve the above object, an embodiment of the utility model provides a phase shifter which can be electrically connected to a feeder, wherein the feeder includes an inner conductor and an outer conductor sleeved outside the inner conductor. The phase shifter includes

[0009] Cavity;

[0010] A phase shifting component, assembled in the cavity;

[0011] A feeding assembly includes a plating coupling piece, wherein the plating coupling piece is detachably connected to the cavity and coupled with the cavity to share a common ground: wherein,

[0012] The cavity may be electrically connected to the outer conductor via the coupling member, and the phase shifting component may be electrically connected to the inner conductor.

[0013] In one or more embodiments of the present invention, an insulating medium is provided between the coupling member and the cavity.

[0014] In one or more embodiments of the present invention, the insulating medium includes an insulating gasket.

[0015] In one or more embodiments of the present invention, the insulating medium is an insulating layer electroplated on the coupling element.

[0016] In one or more embodiments of the present invention, the feed assembly further includes a feed conductor, which runs through the cavity, one end of which is electrically connected to the phase shift assembly, and the opposite end of which can be electrically connected to the inner conductor.

[0017] In one or more embodiments of the present invention, the feed assembly further includes a feed conductor, which runs through the cavity and the coupling member, one end of which is electrically connected to the phase shift assembly, and the opposite end of which can be electrically connected to the inner conductor.

[0018] In one or more embodiments of the present invention, the coupling member includes a main body and a connecting portion for connecting the outer conductor, the main body is detachably connected to the cavity and coupled to a common ground with the cavity, and the connecting portion is provided on the main body.

[0019] In one or more embodiments of the present invention, the connecting portion is integrally formed with the main body or is detachably connected to the main body.

[0020] In one or more embodiments of the present invention, the connecting portion is provided with an arc-shaped recessed portion.

[0021] In one or more embodiments of the present invention, the cavity includes a main body and an extension portion extending from one side of the main body, the coupling piece is provided with a mounting portion, the main body is detachably connected to the main body and coupled to the main body, and the mounting portion is detachably connected to the extension portion.

[0022] In one or more embodiments of the present invention, the coupling area between the coupling element and the cavity is between 400 square millimeters and 600 square millimeters.

[0023] In one or more embodiments of the present invention, the distance between the coupling member and the cavity is between 0.02 mm and 0.2 mm.

[0024] In one or more embodiments of the present invention, the dielectric constant of the insulating medium is between 3 and 4.3.

[0025] In one or more embodiments of the present invention, when the operating frequency band of the phase shifter is between 0.61-0.96 GHz, the coupling area between the coupling element and the cavity is between 400 square millimeters and 520 square millimeters.

[0026] In one or more embodiments of the present invention, when the operating frequency band of the phase shifter is between 0.61 GHz and 0.96 GHz, the distance between the coupling element and the side wall is between 0.15 mm and 0.2 mm.

[0027] An embodiment of the utility model provides an antenna, comprising the phase shifter mentioned above.

[0028] Compared with the prior art, (1) the phase shifter described in the present invention has a cavity connected to the electroplated coupling part by coupling, avoiding the use of riveting to connect to the electroplated riveted part, thereby avoiding problems such as cavity deformation and improving the performance of the phase shifter.

[0029] (2) The phase shifter described in the present invention uses an electroplated coupling piece to achieve the connection between the cavity and the outer conductor, thereby avoiding the electroplating of the entire cavity, saving costs while improving production efficiency. At the same time, it also increases the yield of the phase shifter cavity, reduces the risk of cavity defects to the phase shifter, and ensures the consistency of the electrical performance of the phase shifter.

[0030] (3) The phase shifter described in the utility model uses a feed conductor to achieve the connection between the phase shift assembly and the inner conductor, thereby avoiding internal bending and facilitating the separation between the feed line and the phase shift, which is beneficial to rework or disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the connection between the phase shifter and the feeder in the prior art;

[0032] Figure 2 It is a schematic diagram of the connection between a phase shifter and a feeder according to an embodiment of the utility model;

[0033] Figure 3 is an exploded diagram of the connection between a phase shifter and a feeder according to an embodiment of the utility model;

[0034] Figure 4 is a side view of a phase shifter connected to a feeder according to an embodiment of the utility model;

[0035] Figure 5 is a stereoscopic diagram of a coupling member according to an embodiment of the present utility model;

[0036] Figure 6 is a stereoscopic diagram of a feed conductor according to an embodiment of the utility model;

[0037] Figure 7 Insertion loss simulation Figure 1 ;

[0038] Figure 8 Insertion loss simulation Figure 2 .

[0039] Description of main reference numerals:

[0040] 10-phase shifter, 11-cavity, 11a-main body, 11b-extension part, 12-phase shifting assembly, 13-feeding assembly, 131-coupling piece, 131a-main body, 131b-connecting part, 131c-arc-shaped recessed part, 131d-installing part, 132-feeding conductor, 20-feeding line, 20a-inner conductor, 20b-outer conductor, m-insulating medium, h1-through hole, h2-through hole, h3-bolt hole, p-locking bolt, q-locking bolt, L-compression rivet. DETAILED DESCRIPTION

[0041] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0042] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0043] like Figure 1 As shown, when the conventional phase shifter 10 is connected to the feeder 20, an electroplated rivet L is usually used to electrically connect the outer conductor of the feeder 20, wherein the electroplated rivet is installed on the cavity of the phase shifter 10 by riveting. However, the electroplated rivet is installed in this way, which may cause the cavity of the phase shifter 10 to deform under stress, the rivet becomes loose, and the bonding force between the rivet and the cavity is insufficient, thereby affecting the performance of the phase shifter 10.

[0044] And as Figures 2 to 3As shown, according to the phase shifter 10 of the preferred embodiment of the present invention, the cavity 11 is connected to the electroplated coupling member 131 by coupling, avoiding the two being connected by riveting, thereby avoiding various problems caused by riveting connection.

[0045] Specifically, Figures 2 to 4 As shown, the phase shifter 10 includes a cavity 11, a phase shift component 12 and a feeding component 13. The cavity 11 is configured with a receiving space, which can be used to accommodate the phase shift component 12; the phase shift component 12 is assembled in the receiving space, and is used to adjust the signal phase, and includes a phase shift circuit and a phase shift medium that can move relative to the phase shift circuit; the feeding component 13 is used to achieve electrical connection between the feeder 20 and the phase shifter 10, and to achieve signal transmission between the two, and includes an electroplated coupling member 131, which is detachably assembled on the outer wall of the cavity 11, and the coupling member 131 and the cavity 11 are coupled to a common ground, and the coupling member 131 is used to connect the outer conductor 20b of the feeder 20, wherein the coupling member 131 can be detachably assembled on the outer wall of the cavity 11 by bolt fixing or the like, and the connection between the coupling member 131 and the outer conductor 20b here includes but is not limited to connection by welding or the like.

[0046] When the phase shifter 10 is connected to the feeder 20, the outer conductor 20b of the feeder 20 is connected to the coupling member 131 outside the cavity 11, that is, the cavity 11 of the phase shifter 10 is electrically connected to the outer conductor 20b of the feeder 20 through the coupling member 131, and the inner conductor 20a of the feeder 20 is connected to the phase shifting component 12 in the cavity 11, thereby finally realizing the connection between the phase shifter 10 and the feeder 20.

[0047] The phase shifter 10 of the present invention couples the coupling member 131 to the cavity 11 instead of riveting, thereby avoiding deformation and looseness of the cavity 11 caused by riveting, and improving the performance of the phase shifter 10. In addition, the phase shifter 10 uses the coupling member 131 to achieve the connection between the outer conductor 20b and the cavity 11, and only needs to electroplate the coupling member 131, thereby avoiding the problems of high cost and low production efficiency caused by direct welding.

[0048] like Figure 3 As shown, in order to realize the coupling common ground between the coupling member 131 and the cavity 11, an insulating medium m is provided between the coupling member 131 and the cavity 11. The insulating medium m can be a separate insulating member, such as Figure 3 The insulating gasket shown, etc., of course, can also be realized by other methods to provide an insulating medium m between the two, such as plating insulating materials, etc., such as electroplating an insulating layer on the coupling member 131.

[0049] Furthermore, when an insulating gasket is provided between the coupling member 131 and the cavity 11, the thickness of the insulating gasket has a certain influence on the resonance of the phase shifter 10. The resonance of the phase shifter 10 here is generated when the phase shifter 10 is coupled to the feeder 20 through the coupling member 131. Figure 7 As shown, when the thickness of the insulating gasket gradually increases, the resonance point shifts toward high frequency, that is, as the thickness of the insulating gasket increases, the resonance point tends to shift toward the maximum value of the working frequency band, thereby making the resonance point away from the working frequency band of the antenna.

[0050] Furthermore, the coupling area between the coupling element 131 and the cavity 11 will also have a certain influence on the resonance of the phase shifter 10. Figure 8 As shown, when the coupling area between the coupling element 131 and the cavity 11 decreases, the resonance point shifts toward the high frequency, that is, as the coupling area decreases, the resonance point tends to shift toward the maximum value of the working frequency band, thereby making the resonance point away from the working frequency band of the antenna. In a specific implementation, it is best to have the coupling area between the coupling element 131 and the cavity 11 between 400 square millimeters and 600 square millimeters. Among them, when the working frequency band of the phase shifter is between 0.61 and 0.96 GHz, the coupling area between the coupling element 131 and the cavity 11 is between 400 square millimeters and 520 square millimeters.

[0051] Furthermore, when the coupling element 131 is electroplated by anodizing process, the gap between the coupling element 131 and the cavity 11 will also have a certain influence on the resonance of the phase shifter 10. When the gap between the coupling element 131 and the cavity 11 is smaller, the resonance point shifts to a low frequency, that is, when the coupling element 131 is electroplated by anodizing process, as the gap between the coupling element 131 and the cavity 11 decreases, the resonance point tends to shift to the minimum value of the antenna working frequency band, thereby making the resonance point away from the antenna working frequency band. In specific implementation, the distance between the coupling element 131 and the cavity 11 is between 0.02 mm and 0.2 mm, which is the best. Among them, when the working frequency band of the phase shifter is between 0.61Ghz-0.96Ghz, the distance between the coupling element and the side wall is between 0.15 mm and 0.2 mm.

[0052] At the same time, when the coupling element 131 is electroplated by anodizing, the higher the DK (dielectric constant) value of the coating material attached to the surface of the coupling element 131, the lower the resonance point tends to be, and the resonance point can be kept away from the working frequency band of the antenna. In specific implementation, the dielectric constant of the insulating medium (coating material) is preferably between 3 and 4.3.

[0053] like Figure 5As shown, the coupling member 131 includes a main body 131a and a connecting portion 131b. The main body 131a is detachably connected to the cavity 11 of the phase shifter 10, and the insulating medium m is arranged between the main body 131a and the cavity 11. Figure 5 As shown, the body 131a is provided with a through hole h1 for the bolt to pass through, and the cavity 11 of the phase shifter 10 is provided with a bolt hole. During assembly, the body 131a can be fixed to the outer wall of the cavity 11 by using a locking bolt p. The connecting portion 131b is used to connect the outer conductor 20b of the feeder 20, and is connected to the body 131a. In a specific implementation, the connecting portion 131b can be connected to the outer conductor 20b of the feeder 20 by welding.

[0054] In this embodiment, the connecting portion 131b is preferably integrally formed with the main body portion 131a to improve the stability of the structure. Of course, in other embodiments, the connecting portion 131b may also be detachably connected to the main body portion 131a to facilitate the disassembly and replacement of parts, etc., and can be set according to actual needs.

[0055] Furthermore, if Figure 5 As shown, in order to improve the connection stability between the coupling member 131 and the outer conductor 20b, the connecting portion 131b of the coupling member 131 is provided with an arc-shaped recessed portion 131c, which can increase the welding area between the connecting portion 131b and the outer conductor 20b and improve the connection stability. Of course, in other embodiments, the connecting portion 131b of the coupling member 131 can also be provided with a threading hole to facilitate the electrical connection between the two.

[0056] like Figure 5 As shown, the coupling member 131 further includes a mounting portion 131d, which is connected to the body portion 131a and directly connected to the cavity 11. Figure 5 As shown, the cavity 11 includes a main body 11a and an extension portion 11b provided on at least one side of the main body 11a and extending away from the main body 11a. When the coupling member 131 is connected to the cavity 11, the mounting portion 131d is further directly connected to the extension portion 11b, that is, the two are directly contacted and connected. In a specific implementation, the mounting portion 131d is provided with a bolt hole h3, and the mounting portion 131d can be detachably connected to the extension portion 11b by tightening the bolt q.

[0057] Combination Figure 2 to Figure 6As shown, the feeding assembly 13 further includes a feeding conductor 132. When the phase shifting assembly 12 is connected to the inner conductor 20a of the feed line 20, the phase shifting assembly 12 is connected to the inner conductor 20a of the feed line 20 through the feeding conductor 132. In a specific implementation, the cavity 11 of the phase shifter 10 is provided with a through hole, and one end of the feeding conductor 132 extends into the cavity 11 through the through hole to be electrically connected to the phase shifting assembly 12 in the cavity 11, and the opposite end extends out of the cavity 11 to be connected to the inner conductor 20a of the feed line 20 (including but not limited to welding).

[0058] In this embodiment, the coupling member 131 is provided with a through hole h2 for the feeding conductor 132 to pass through. The feeding conductor 132 can pass through the coupling member 131 and the cavity 11. One end of the coupling member 131 is electrically connected to the phase shifting component 12 in the cavity 11, and the opposite end extends to the outside of the cavity 11 to be connected to the inner conductor 20a of the feed line 20.

[0059] By using the feed conductor 132 to connect the phase shift assembly 12 in the cavity 11 and the inner conductor 20a outside the cavity 11, the bending of the inner conductor 20a can be avoided. At the same time, it is also convenient to separate the feed line 20 from the phase shifter 10, which is friendly to rework. This is because when the feed conductor 132 is used for connection, it is only necessary to remove the solder between the inner conductor 20b and the feed conductor 132 at high temperature during disassembly, without the need for multiple people to operate at the same time or destructive operations.

[0060] The utility model also discloses an antenna, comprising the above-mentioned phase shifter. Since the phase shifter has the above-mentioned advantages, the antenna also has the above-mentioned advantages.

[0061] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A phase shifter, electrically connectable to a feeder, wherein the feeder comprises an inner conductor and an outer conductor sleeved outside the inner conductor, wherein: The phase shifter comprises Cavity; A phase shifting component, assembled in the cavity; A feeding assembly includes a plating coupling member, wherein the coupling member is detachably connected to the cavity and coupled with the cavity to share a common ground: wherein, The cavity is electrically connected to the outer conductor through the coupling member, and the phase shifting component is electrically connected to the inner conductor.

2. The phase shifter according to claim 1, characterized in that An insulating medium is provided between the coupling member and the cavity.

3. The phase shifter according to claim 2, characterized in that The insulating medium includes an insulating spacer.

4. The phase shifter according to claim 2, characterized in that The insulating medium is an insulating layer electroplated on the coupling member.

5. The phase shifter according to claim 1, characterized in that The feed assembly further includes a feed conductor, which runs through the cavity. One end of the feed conductor is electrically connected to the phase shift assembly, and the opposite end of the feed conductor is electrically connected to the inner conductor.

6. The phase shifter according to claim 1, characterized in that The feed assembly further includes a feed conductor, which runs through the cavity and the coupling member. One end of the feed conductor is electrically connected to the phase shift assembly, and the opposite end is electrically connected to the inner conductor.

7. The phase shifter according to claim 1, characterized in that The coupling member comprises a main body and a connecting portion for connecting the outer conductor, the main body is detachably connected to the cavity and coupled to the cavity for sharing a common ground, and the connecting portion is arranged on the main body.

8. The phase shifter according to claim 7, characterized in that The connecting portion is integrally formed with the main body or is detachably connected to the main body.

9. The phase shifter according to claim 7, characterized in that The connecting portion is provided with an arc-shaped recessed portion.

10. The phase shifter according to claim 7, characterized in that The cavity includes a main body and an extension portion extending from one side of the main body, the coupling piece is provided with a mounting portion, the main body is detachably connected to the main body and coupled to the main body to share a common ground, and the mounting portion is detachably connected to the extension portion.

11. The phase shifter according to claim 1, wherein: The coupling area between the coupling element and the cavity is between 400 square millimeters and 600 square millimeters.

12. The phase shifter according to claim 1, wherein: The distance between the coupling element and the cavity is between 0.02 mm and 0.2 mm.

13. The phase shifter according to claim 2, characterized in that The dielectric constant of the insulating medium is between 3 and 4.

3.

14. The phase shifter according to claim 1, wherein: When the operating frequency band of the phase shifter is between 0.61 and 0.96 GHz, the coupling area between the coupling element and the cavity is between 400 square millimeters and 520 square millimeters.

15. The phase shifter according to claim 1, wherein: When the operating frequency band of the phase shifter is between 0.61 GHz and 0.96 GHz, the distance between the coupling element and the side wall is between 0.15 mm and 0.2 mm.

16. An antenna, characterized in that: A phase shifter comprising any one of claims 1 to 15.

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