Phase shifter

Abstract

The embodiment of the utility model provides a phase shifter, which belongs to the field of phase shifters and comprises a cavity, a fixing assembly, a pull rod, two buckle assemblies and a coaxial cable, a dielectric plate and a PCB (Printed Circuit Board) are arranged in the cavity; the fixing assembly comprises a base and two first arc grooves, the base is arranged on the first side face of the cavity, and the two first arc grooves are arranged above the base in parallel and spaced by a first distance; the pull rod is arranged on the second side surface of the cavity and is used for pulling the dielectric plate; the two buckle assemblies are respectively arranged on the third side surface and the fourth side surface of the cavity, and the two buckle assemblies are used for fixing the PCB and the dielectric plate in the cavity; an outer conductor of the coaxial cable is fixedly connected with the first arc groove, and an inner core of the coaxial cable is electrically connected with the PCB through a mounting hole formed in the first side surface of the cavity; according to the phase shifter, the overall production cost of the phase shifter can be effectively reduced, and the stability of the antenna can be enhanced.

Description

Technical Field

[0001] The present application relates to the field of phase shifters, and in particular to a phase shifter. Background Art

[0002] The core components of a base station antenna include radiating elements, phase shifters, transmission mechanisms, and control systems. In a base station antenna system, the phase shifter changes the phase of the power fed to the radiating elements, shaping and scanning the radiation beam. The performance of the phase shifter directly determines the quality of the base station antenna, which in turn affects the overall network coverage.

[0003] Currently, there are two common types of phase shifters: arc phase shifters and cavity phase shifters. Arc phase shifters are simpler and less expensive than cavity phase shifters in terms of structural design. However, due to the high performance requirements of many products, cavity phase shifters are still needed when arc phase shifters cannot meet these requirements. However, existing cavity phase shifters have limited space for coaxial cable soldering, and the entire cavity requires electroplating to accommodate coaxial cable soldering. The larger the cavity, the higher the cost of electroplating. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the technical problems existing in the prior art and to provide a phase shifter that can effectively reduce the overall production cost of the phase shifter and enhance the stability of the antenna.

[0005] To achieve the above-mentioned objectives, an embodiment of the present application proposes a phase shifter, comprising: a cavity, a fixing assembly, a pull rod, two snap assemblies, and a coaxial cable; a dielectric plate and a PCB board are arranged in the cavity; the fixing assembly includes a base and two first arc grooves, the base is arranged on the first side of the cavity, and the two first arc grooves are arranged above the base in parallel and at a first distance; the pull rod is arranged on the second side of the cavity and is used to pull the dielectric plate; the two snap assemblies are respectively arranged on the third side and the fourth side of the cavity, and the two snap assemblies are used to fix the PCB board and the dielectric plate in the cavity; the outer conductor of the coaxial cable is fixedly connected to the first arc groove, and the inner core of the coaxial cable is electrically connected to the PCB board through the mounting hole arranged on the first side of the cavity; wherein the fixing assembly is made of a metal material that can be electroplated.

[0006] A phase shifter provided by an embodiment of the present invention has at least the following beneficial effects: first, after the fixing assembly is fixedly connected to the first side surface of the cavity, the outer conductor of the coaxial cable is fixed in the first arc groove of the fixing assembly, so that the coaxial cable is indirectly fixed to the cavity of the phase shifter through the fixing assembly. Therefore, only the fixing assembly with a relatively small structure needs to be electroplated to avoid electroplating the entire cavity of the phase shifter, which significantly reduces electroplating costs. Second, the two first arc grooves of the fixing assembly are adapted to the outer conductor of the coaxial cable, and can cover most of the outer conductor area of ​​the coaxial cable. The welding area is larger and the fixing effect is better, which can better enhance the stability of the third-order intermodulation of the antenna; the two first arc grooves are arranged above the base in parallel and at a first distance, and there is a gap between the two first arc grooves. Compared with directly processing two first arc grooves on the fixing component, the two first arc grooves are tightly connected, which better reduces the weight of the fixing component and thus reduces the production cost; finally, the two snap assemblies are respectively arranged on the third side and the fourth side of the cavity. The two snap assemblies are used to fix the PCB board and the dielectric board in the cavity, so that the PCB board and the dielectric board will not move or detach at will inside the cavity, thereby enhancing the stability of the antenna operation.

[0007] In some embodiments, a convex strip is further included, and the convex strip is arranged between the first side surface of the cavity and the base of the fixing component.

[0008] In some embodiments, two supporting edges are provided below the base of the fixing assembly, and the supporting edges are fixedly connected to the convex strips.

[0009] In some embodiments, the snap assembly includes a first snap assembly and a second snap assembly, the first snap assembly is vertically connected to the second snap assembly, the first snap assembly is used to fix the PCB board and the dielectric board in the cavity, and the second snap assembly is used to fix the cable extending beyond the first side of the cavity.

[0010] In some embodiments, the second buckle assembly includes two second arc grooves, and the cable extending beyond the first side surface of the cavity is snap-fitted into the second arc grooves.

[0011] In some embodiments, a transition piece is further included, one end of which is disposed in a mounting hole on the first side surface of the cavity, and the inner core of the coaxial cable is electrically connected to the other end of the transition piece.

[0012] In some embodiments, the base of the fixing assembly is fixedly connected to the first side surface of the cavity by laser welding.

[0013] In some embodiments, the supporting edge and the convex strip are fixedly connected by laser welding.

[0014] In some embodiments, two edges of the base adjacent to the supporting edge are fixedly connected to the first side surface of the cavity by laser welding.

[0015] In some embodiments, the convex strip is integrally formed with the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the technical solution of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the technical solution of the present invention and do not constitute a limitation on the technical solution of the present invention.

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the overall structure of a phase shifter provided by an embodiment of the present utility model;

[0019] Figure 2 This is a partial enlarged view of a fixed component in a phase shifter provided by an embodiment of the present utility model;

[0020] Figure 3 This is a partial structural diagram of a phase shifter provided by an embodiment of the present utility model;

[0021] Figure 4 This is a partial structural diagram of another phase shifter provided by an embodiment of the present utility model;

[0022] Figure 5 This is a partial structural exploded view of a phase shifter provided in an embodiment of the present utility model. DETAILED DESCRIPTION

[0023] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0024] In the description of this utility model, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Currently, there is little space left for coaxial cable welding in the structure of existing cavity phase shifters, and the cavity needs to be electroplated as a whole to meet the requirements of coaxial cable welding. The larger the cavity, the higher the cost of phase shifter electroplating.

[0027] Based on this, an embodiment of the present invention provides a phase shifter, which can effectively reduce the overall production cost of the phase shifter and enhance the stability of the antenna.

[0028] The following is a further description of the embodiments of the present invention with reference to the accompanying drawings.

[0029] Reference Figure 1 、 Figure 2 The present invention provides a phase shifter, comprising: a phase shifter, comprising: a cavity 100, a fixing assembly 200, a pull rod 300, two snap assemblies 400, and a coaxial cable 500; a dielectric plate and a PCB are arranged in the cavity 100; the fixing assembly 200 comprises a base 210 and two first arc grooves 220, the base 210 is arranged on a first side of the cavity 100, and the two first arc grooves 220 are arranged above the base 210 in parallel and at a first distance; the pull rod 300 is arranged in the cavity The second side of the cavity 100 is used to pull the dielectric plate; two snap assemblies 400 are respectively arranged on the third side and the fourth side of the cavity 100, and the two snap assemblies 400 are used to fix the PCB board and the dielectric plate in the cavity 100; the outer conductor of the coaxial cable 500 is fixedly connected to the first arc groove 220, and the inner core of the coaxial cable 500 is electrically connected to the PCB board through the mounting hole 120 set on the first side of the cavity 100; wherein, the fixing assembly 200 is made of a metal material that can be electroplated.

[0030] According to an embodiment of the present invention, a phase shifter is provided. First, after the fixing assembly 200 is fixedly connected to the first side surface of the cavity 100, the outer conductor of the coaxial cable 500 is fixed in the first arc groove 220 of the fixing assembly 200. This allows the coaxial cable 500 to be indirectly fixed to the cavity 100 of the phase shifter via the fixing assembly 200. Therefore, only the fixing assembly 200 needs to be electroplated to avoid the need for electroplating the entire cavity 100 of the phase shifter, significantly reducing electroplating costs. Second, the two first arc grooves 220 of the fixing assembly 200 are adapted to the outer conductor of the coaxial cable 500, covering a large area of ​​the outer conductor of the coaxial cable 500. The welding area is larger and the fixing effect is better, which can better enhance the stability of the third-order intermodulation of the antenna; the two first arc grooves 220 are arranged above the base 210 in parallel and at a first distance, and there is a gap between the two first arc grooves 220. Compared with directly processing two first arc grooves 220 on the fixing component 200, the solution of closely connecting the two first arc grooves 220 can better reduce the weight of the fixing component 200, thereby reducing the production cost; finally, the two snap assemblies 400 are respectively arranged on the third side and the fourth side of the cavity 100. The two snap assemblies 400 are used to fix the PCB board and the dielectric board in the cavity 100, so that the PCB board and the dielectric board will not move or detach at will inside the cavity 100, thereby enhancing the stability of the antenna operation.

[0031] It should be noted that a suitable form of the fixing assembly 200 can be selected according to specific performance requirements. The fixing assembly 200 can be made by processing aluminum profiles, or by sheet metal processing, or by die-casting processing.

[0032] In some embodiments, the base 210 of the fixing assembly 200 is fixedly connected to the first side surface of the cavity 100 by laser welding.

[0033] In some embodiments, reference Figure 2 , further comprising a protrusion 110 , which is disposed between the first side surface of the cavity 100 and the base 210 of the fixing assembly 200 .

[0034] It should be noted that a plurality of ridges 110 are provided on the first side surface of the cavity 100 , and the ridges 110 are arranged in pairs in a row between the first side surface of the cavity 100 and the base 210 of the fixing assembly 200 .

[0035] In some embodiments, the ridge 110 and the cavity 100 are integrally formed.

[0036] It should be noted that the height of the fixing assembly 200 can affect the standing wave index of the phase shifter's electrical performance. By changing the height of the ridges 110, and thereby changing the height of the fixing assembly 200 on the first side of the cavity 100, the fixing assembly 200 can be adapted to different performance requirements, thereby improving the standing wave index of the phase shifter's electrical performance.

[0037] In some embodiments, reference Figure 2 、 Figure 3 Two supporting edges 211 are provided below the base 210 of the fixing assembly 200 , and the supporting edges 211 are fixedly connected to the protruding strips 110 .

[0038] It should be noted that the two supporting edges 211 of the fixing assembly 200 are symmetrically arranged below the base 210 so that the bottom of the base 210 does not contact the convex strip 110, thus meeting the intermodulation performance index.

[0039] In some embodiments, the supporting edge 211 and the protruding strip 110 are fixedly connected by laser welding.

[0040] In some embodiments, two edges of the base 210 adjacent to the supporting edge 211 are fixedly connected to the first side surface of the cavity 100 by laser welding.

[0041] It can be understood that the welding area between the fixing component 200 and the first side of the cavity 100 is the upper and lower sides of the bottom of the fixing component 200, i.e., the two support edges 211, or the left and right sides, i.e., the two adjacent edges of the support plate. After the fixing component 200 and the cavity 100 are fixed, the inner core of the coaxial cable 500 is inserted into the mounting hole 120 located on the first side of the cavity 100, and then the coaxial cable 500 is bent 90° and the outer conductor of the coaxial cable 500 is welded and fixed to the first arc groove 220 of the fixing component 200.

[0042] In some embodiments, reference Figure 3 The snap assembly 400 includes a first snap assembly 410 snap assembly 400 and a second snap assembly 420 snap assembly 400. The first snap assembly 410 snap assembly 400 is vertically connected to the second snap assembly 420 snap assembly 400. The first snap assembly 410 snap assembly 400 is used to fix the PCB board and the dielectric board in the cavity 100, and the second snap assembly 420 snap assembly 400 is used to fix the cable extending beyond the first side of the cavity 100.

[0043] It can be understood that by fixing the PCB board and the dielectric board in the cavity 100 through the first clip assembly 410 clip assembly 400, it can ensure that the PCB board and the dielectric board remain stable and avoid loosening or displacement due to vibration or external force; the second clip assembly 420 clip assembly 400 is used to fix the cable extending beyond the first side of the cavity 100, which can protect the cable from damage by external force and extend its service life.

[0044] It can be understood that the first snap assembly 410, snap assembly 400 and the second snap assembly 420, snap assembly 400 make the assembly process of the cavity 100 and the coaxial cable 500 simpler and faster, thereby reducing assembly cost and time.

[0045] In some embodiments, reference Figure 3 The second snap assembly 420 includes two second arc grooves 421 , and the cable extending beyond the first side surface of the cavity 100 is snapped into the second arc grooves 421 .

[0046] In some embodiments, reference Figure 4 , further comprising an adapter 600 , one end of which is disposed in the mounting hole 120 on the first side surface of the cavity 100 , and the inner core of the coaxial cable 500 is electrically connected to the other end of the adapter 600 .

[0047] It should be noted that the shape of the contact surface between the other end of the adapter 600 and the inner core of the coaxial cable 500 can be square, circular or other shapes that reserve space for welding with the inner core of the coaxial cable 500 .

[0048] It should be noted that the adapter 600 can be a gold stamping part, a die-cast part, a profile pultrusion part or other metal materials that can be electroplated.

[0049] It can be understood that after the coaxial cable 500 is welded in parallel to the fixing component 200 through the adapter 600, the inner core of the coaxial cable 500 is connected to the other end of the adapter 600, which can effectively avoid the intermodulation stability being damaged due to the bending of the coaxial cable 500, thereby improving the stability of the phase shifter operation.

[0050] In some embodiments, reference Figure 5 Two through holes 221 are provided in the first arc groove 220 of the fixing assembly 200, and the through holes 221 are located above the mounting holes 120 on the first side surface of the cavity 100. Each first arc groove 220 is used to fix the outer conductors of two coaxial cables 500. The inner core of the coaxial cable 500 is electrically connected to the PCB board through the through holes 221 provided in the first arc groove 220 and the mounting holes 120 provided on the first side surface of the cavity 100.

[0051] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A phase shifter, characterized in that: include: A cavity, wherein a dielectric plate and a PCB board are arranged in the cavity; A fixing assembly, the fixing assembly comprising a base and two first arc grooves, the base being disposed on a first side surface of the cavity, and the two first arc grooves being disposed above the base in parallel and spaced a first distance apart; a pull rod, the pull rod being arranged on the second side of the cavity and being used to pull the dielectric plate; Two snap assemblies, the two snap assemblies being respectively arranged on the third side surface and the fourth side surface of the cavity, and the two snap assemblies being used to fix the PCB board and the dielectric board in the cavity; a coaxial cable, wherein the outer conductor of the coaxial cable is fixedly connected to the first arc groove, and the inner core of the coaxial cable is electrically connected to the PCB board through a mounting hole provided on the first side surface of the cavity; Wherein, the fixing component is made of a metal material that can be electroplated.

2. The phase shifter according to claim 1, wherein: It also includes a convex strip, which is arranged between the first side surface of the cavity and the base of the fixing component.

3. The phase shifter according to claim 2, wherein: Two supporting edges are provided below the base of the fixing assembly, and the supporting edges are fixedly connected to the convex strips.

4. The phase shifter according to claim 1, wherein: The snap assembly includes a first snap assembly and a second snap assembly, the first snap assembly is vertically connected to the second snap assembly, the first snap assembly is used to fix the PCB board and the dielectric board in the cavity, and the second snap assembly is used to fix the cable extending beyond the first side of the cavity.

5. The phase shifter according to claim 4, wherein: The second buckle assembly includes two second arc grooves, and the cable extending beyond the first side surface of the cavity is snap-fitted into the second arc grooves.

6. The phase shifter according to claim 1, wherein: It also includes a transition piece, one end of which is arranged in the mounting hole on the first side surface of the cavity, and the inner core of the coaxial cable is electrically connected to the other end of the transition piece.

7. The phase shifter according to claim 1, wherein: The base of the fixing assembly is fixedly connected to the first side surface of the cavity by laser welding.

8. The phase shifter according to claim 3, wherein: The supporting edge and the convex strip are fixedly connected by laser welding.

9. The phase shifter according to claim 3, wherein: Two edges of the base adjacent to the supporting edge are fixedly connected to the first side surface of the cavity by laser welding.

10. The phase shifter according to claim 2, wherein: The convex strips are integrally formed with the cavity.

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