Stackable cavity phase shifter and base station antenna

Abstract

The utility model provides a stackable cavity phase shifter and a base station antenna, which can be flexibly arranged according to requirements, realize stacking arrangement or independent arrangement of phase shifters, are convenient and fast to install, are stable and reliable, and comprise a phase shifter body which adopts a cavity phase shifter, and further comprise a bottom supporting piece, a top supporting piece and a bottom supporting piece, the fixing device is used for fixing the phase shifter body and fixing the phase shifter body on an antenna bottom plate; the upper supporting piece is detachably installed at the upper end of the bottom supporting piece, the upper supporting piece and the bottom supporting piece respectively clamp at least one phase shifter body, and the phase shifter bodies are stacked up and down; the welding piece is detachably installed on the phase shifter body, a cable outer conductor coupling hole for a coaxial cable to penetrate through is formed in the welding piece, and an electroplating coating is arranged on the surface of the welding piece; the phase shifter comprises a phase shifter body, a cavity wire clamp, the cavity wire clamp is clamped on the phase shifter body, and a cable clamping groove is arranged on the cavity wire clamp.

Description

Technical Field

[0001] The utility model relates to the technical field of mobile communications, and in particular to a stackable cavity phase shifter and a base station antenna. Background Art

[0002] At present, operators have higher and higher requirements for the performance and reliability of base station antennas. Phase shifters, as the core components of base station antennas, are even more important. There are two types of phase shifters on the market. One is a fan-shaped PCB phase shifter and the other is a cavity phase shifter. The fan-shaped PCB phase shifter has low material cost, but if the contact between the two PCBs is unreliable, it will have a great impact on the performance, and the intermodulation level is average; the cavity phase shifter has better stability, high intermodulation level, and is conducive to the component production of automated production lines. Therefore, the overall performance of the cavity phase shifter is better and the market share is higher. Generally, the layout of the cavity phase shifter is a flat single-layer layout. For example, the patent disclosed in CN116598734A discloses a polarization-corresponding electroplating-free phase shifter and antenna, and the patent disclosed in CN218569180U discloses a phase shifter and base station antenna patent, in which the phase shifter is arranged vertically. There is also a demand for stacking the phase shifters, which can reduce the overall volume and weight of the antenna. For this reason, it is necessary to provide a stackable cavity phase shifter that can be flexibly arranged. Utility Model Content

[0003] In view of the above problems, the utility model provides a stackable cavity phase shifter and a base station antenna, which can be flexibly arranged according to needs to realize stacked arrangement or independent setting of phase shifters, and the installation is convenient and fast, and stable and reliable.

[0004] The technical solution is as follows: a stackable cavity phase shifter, comprising a phase shifter body, wherein the phase shifter body adopts a cavity phase shifter, and is characterized in that it also includes:

[0005] A bottom support member, used to fix the phase shifter body and to be fixed on the antenna bottom plate;

[0006] An upper support member, wherein the upper support member is detachably mounted on the upper end of the bottom support member, and the upper support member and the bottom support member respectively clamp at least one of the phase shifter bodies, and the phase shifter bodies are stacked up and down;

[0007] A welding plate, which is detachably mounted on the phase shifter body, is provided with a cable outer conductor coupling hole for the coaxial cable to pass through, and has an electroplating coating on its surface;

[0008] A cavity line card is mounted on the phase shifter body and is provided with a cable card slot.

[0009] Furthermore, support member fixing holes are respectively provided on both sides of the bottom support member and the upper support member, and the bottom support member and the upper support member are fixed together by a fixing member cooperating with the support member fixing holes.

[0010] Furthermore, a cavity fixing support groove is provided on the phase shifter body, the bottom support member and the upper support member are respectively provided with hooks that cooperate with the cavity fixing support groove to clamp the phase shifter body, a support member limiting groove is provided in the cavity fixing support groove, and the bottom support member and the upper support member are respectively provided with clamping strips that match the support member limiting groove.

[0011] Furthermore, the bottom support member and the upper support member are respectively provided with positioning holes and positioning pins for supporting the installation and positioning of the bottom support member and the upper support member.

[0012] Furthermore, an elastic hook is provided at the lower end of the bottom support member, and the bottom support member is fixed to the antenna bottom plate through the elastic hook.

[0013] Furthermore, the phase shifter body is supported by at least two bottom support members, and when the phase shifter bodies are stacked, the number of the upper support members corresponds to the number of the bottom support members.

[0014] Furthermore, a line card positioning groove is provided on the phase shifter body corresponding to the cavity line card, and a positioning card block is provided on the cavity line card to engage with the line card positioning groove. The cavity line card also includes a relatively arranged line card buckle, and a card slot is provided on the phase shifter body accordingly. The cavity line card is mounted on the phase shifter body through the line card buckle and the card slot.

[0015] Furthermore, the welding sheet is provided with a screw hole, and the phase shifter body is correspondingly provided with a welding sheet mounting hole, and the welding sheet is fixed to the phase shifter body by screws cooperating with the screw hole and the welding sheet mounting hole.

[0016] Furthermore, a circular convex bulge is formed by punching on the welding sheet, and the screw hole is located in the circular convex bulge.

[0017] A base station antenna, characterized by comprising the stackable cavity phase shifter mentioned above.

[0018] The stackable cavity phase shifter and base station antenna provided by the utility model can be flexibly arranged according to needs. The independent setting of the phase shifter can be realized by using the bottom support member alone. When the phase shifters need to be stacked, the stacked arrangement of the cavity phase shifters can be realized by combining the bottom support member and the upper support member. The combination of the bottom support member and the upper support member is convenient and quick to install, saves installation time, has a wide range of application scenarios, and is stable and reliable. The bottom support member and the upper support member can effectively ensure that the connection of the phase shifter is stable and reliable, and can withstand a certain external force without falling off; the cavity as a whole is free of electroplating, and the coaxial cable is welded to the welding plate. Only the welding plate needs to be electroplated, which saves a lot of electroplating costs, and significantly improves product cost control and product greening. In addition, a cavity line card is arranged in the utility model and is mounted on the cavity phase shifter. The cavity line card is provided with a cable slot to protect the cable welding position from external forces, bending and cable damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of fixing the cavity phase shifter using the bottom support member alone in the embodiment;

[0020] Figure 2 It is a schematic diagram of the components exploded in the embodiment of using the bottom support member alone to fix the cavity phase shifter;

[0021] Figure 3 for Figure 2 The enlarged schematic diagram of point A in the middle;

[0022] Figure 4 is a schematic diagram of a stacked cavity phase shifter in an embodiment;

[0023] Figure 5 is a schematic diagram of a bottom support member and an upper support member;

[0024] Figure 6 is a schematic diagram of a welding sheet;

[0025] Figure 7 Schematic diagram of the cavity line card. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See Figures 1 to 7 A stackable cavity phase shifter includes a phase shifter body 10, wherein the phase shifter body adopts a cavity phase shifter, and further includes:

[0028] The bottom support member 20 is used to fix the phase shifter body 10 and is fixed to the antenna bottom plate;

[0029] An upper support member 30, the upper support member 30 is detachably mounted on the upper end of the bottom support member 20, the upper support member 30 and the bottom support member 20 respectively clamp at least one phase shifter body 10, and the phase shifter bodies 20 are stacked up and down;

[0030] A welding plate 40, which is detachably mounted on the phase shifter body 10, and is provided with a cable outer conductor coupling hole 41 for the coaxial cable to pass through, and a surface of the welding plate 40 is provided with an electroplating coating;

[0031] The cavity line card 50 is mounted on the phase shifter body 10 , and a cable slot 51 is provided on the cavity line card 50 .

[0032] In the embodiment, when the phase shifter body is fixed by the bottom support member, at least two bottom support members are used for support; when the phase shifter bodies are stacked, the number of the upper support members corresponds to the number of the bottom support members, so as to ensure the reliability of the support structure. Figure 1 A schematic diagram showing the use of a bottom support alone to fix the cavity phase shifter. Figure 1 Other bottom supports are omitted. Figure 4 A schematic diagram showing the stacked cavity phase shifter, and Figure 1 Same, Figure 4 Other bottom support members and upper support members are also omitted.

[0033] Specifically in the embodiment, support member fixing holes 21 and 31 are respectively provided on both sides of the bottom support member 20 and the upper support member 30. The bottom support member 20 and the upper support member 30 are fixed together by the cooperation of fixing members with the support member fixing holes. The fixing members can be selected from rivets or bolts and nuts, etc., and reinforcing ribs are provided on the side panels provided with the support member fixing holes 21 and 31 to ensure the structural strength and connection reliability of the bottom support member 20 and the upper support member 30.

[0034] In one embodiment, in order to facilitate the assembly of the bottom support member 20 and the upper support member 30, positioning holes 24 and positioning pins 34 are respectively provided on the bottom support member 20 and the upper support member 30 to support the installation and positioning of the bottom support member and the upper support member, and play a role in pre-positioning when the bottom support member 20 and the upper support member 30 are assembled, so as to facilitate subsequent fixation by fixing members.

[0035] In addition, a cavity fixing support groove 11 is provided on the phase shifter body 10, and the bottom support member and the upper support member are respectively provided with hooks 22 and 32 that cooperate with the cavity fixing support groove 11 to clamp the phase shifter body 10. A support member limiting groove 12 is provided in the cavity fixing support groove 11, and the bottom support member and the upper support member are respectively provided with clamping strips 23 and 33 that match the support member limiting groove. Through the cooperation of the clamping strip and the support member limiting groove 12, a limiting effect can be played to avoid relative displacement between the phase shifter body 10 and the bottom support member 20 and the upper support member 30, thereby ensuring the reliability of the support.

[0036] In the embodiment, an elastic hook 25 is provided at the lower end of the bottom support member 20 , and the bottom support member 20 is fixed to the antenna bottom plate through the elastic hook 25 .

[0037] In one embodiment, a line card positioning groove 13 is provided on the phase shifter body 10 corresponding to the cavity line card, and a positioning block 52 is provided on the cavity line card 50 corresponding to engage with the line card positioning groove 13. The cavity line card 50 also includes a pair of relatively arranged line card buckles 53. A card slot 14 is provided on the phase shifter body corresponding to the cavity line card 50. The cavity line card 50 is mounted on the phase shifter body 10 through the card buckle 53 and the card slot 14, thereby realizing the rapid assembly of the cavity line card 50.

[0038] In one embodiment, a screw hole 42 is provided on the welding sheet 40, and a welding sheet mounting hole is correspondingly provided on the phase shifter body. The welding sheet 40 is fixed to the phase shifter body 10 by means of screws, the screw holes and the welding sheet mounting holes. A circular convex bump 43 is stamped on the welding sheet 40, and the screw hole 42 is located in the circular convex bump 43. Since the effective fixing area of ​​the screw is circular, the welding sheet adopts a circular convex bump design to form effective and uniform contact with the side of the cavity, thereby improving the intermodulation performance of the phase shifter. The welding sheet 40 is formed as a whole by stamping, which has lower cost.

[0039] The phase shifter in the embodiment has the following advantages:

[0040] The phase shifter can be flexibly arranged according to actual needs. The bottom support can be used alone to achieve independent setting, or the bottom support and the upper support can be used in combination to achieve stacking arrangement to meet the use requirements of different scenarios. The combination of the bottom support and the upper support makes the installation of the phase shifter convenient and quick, greatly saving installation time and improving installation efficiency. The bottom support and the upper support can effectively ensure the stability and reliability of the connection of the phase shifter, can withstand a certain external force without falling off, and ensure the normal operation of the phase shifter;

[0041] In the past, the cavity in the traditional cavity phase shifter assembly was electroplated as a whole, and the cable was welded to the cavity, so the cost of the cavity was very high. The cavity phase shifter in the embodiment is free of electroplating as a whole, and the coaxial cable is welded to the welding plate, and only the welding plate needs to be electroplated, which greatly saves the electroplating cost, reduces the product cost, and is conducive to the improvement of the green product; the cavity line card is mounted on the cavity phase shifter, and the cavity line card is provided with a cable card slot to protect the cable welding position from external forces, avoid bending and cable damage, and increase the service life. In summary, the phase shifter of the utility model has strong practicality and superiority.

[0042] In an embodiment of the present utility model, a base station antenna is further provided, comprising the stackable cavity phase shifter mentioned above.

[0043] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stackable cavity phase shifter, comprising a phase shifter body, wherein the phase shifter body is a cavity phase shifter, characterized in that: Also includes: A bottom support member, used to fix the phase shifter body and to be fixed on the antenna bottom plate; An upper support member, wherein the upper support member is detachably mounted on the upper end of the bottom support member, and the upper support member and the bottom support member respectively clamp at least one of the phase shifter bodies, and the phase shifter bodies are stacked up and down; A welding plate, which is detachably mounted on the phase shifter body, is provided with a cable outer conductor coupling hole for the coaxial cable to pass through, and has an electroplating coating on its surface; A cavity line card is mounted on the phase shifter body and is provided with a cable card slot.

2. A stackable cavity phase shifter according to claim 1, characterized in that: Support member fixing holes are respectively arranged on both sides of the bottom support member and the upper support member, and the bottom support member and the upper support member are fixed together by the fixing member cooperating with the support member fixing holes.

3. The stackable cavity phase shifter according to claim 1, characterized in that: The phase shifter body is provided with a cavity fixing support groove, the bottom support member and the upper support member are respectively provided with hooks that cooperate with the cavity fixing support groove to clamp the phase shifter body, the cavity fixing support groove is provided with a support member limiting groove, and the bottom support member and the upper support member are respectively provided with clamping strips that match the support member limiting groove.

4. The stackable cavity phase shifter according to claim 1, characterized in that: The bottom support member and the upper support member are respectively provided with positioning holes and positioning pins for supporting the installation and positioning of the bottom support member and the upper support member.

5. The stackable cavity phase shifter according to claim 1, characterized in that: An elastic hook is provided at the lower end of the bottom support member, and the bottom support member is fixed on the antenna bottom plate through the elastic hook.

6. The stackable cavity phase shifter according to claim 1, characterized in that: The phase shifter body is supported by at least two bottom support members, and when the phase shifter bodies are stacked, the number of the upper support members corresponds to the number of the bottom support members.

7. The stackable cavity phase shifter according to claim 1, characterized in that: The phase shifter body is provided with a line card positioning groove corresponding to the cavity line card, the cavity line card is provided with a positioning card block corresponding to the line card positioning groove, the cavity line card also includes a relatively arranged line card buckle, the phase shifter body is provided with a card slot corresponding to the phase shifter body, and the cavity line card is mounted on the phase shifter body through the line card buckle and the card slot.

8. The stackable cavity phase shifter according to claim 1, characterized in that: The welding sheet is provided with a screw hole, and the phase shifter body is correspondingly provided with a welding sheet mounting hole. The welding sheet is fixed to the phase shifter body by screws cooperating with the screw hole and the welding sheet mounting hole.

9. The stackable cavity phase shifter according to claim 8, characterized in that: A circular convex bump is punched on the welding sheet, and the screw hole is located in the circular convex bump.

10. A base station antenna, characterized in that: A stackable cavity phase shifter comprising any one of claims 1 to 9.

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