Cavity for accommodating phase shifter components, phase shifter and antenna

Abstract

The utility model relates to a cavity for accommodating a phase shifter component, a phase shifter and an antenna, wherein the cavity for accommodating the phase shifter component comprises: a top wall; two side walls, wherein the two side walls extend from two side edges of the top wall to the same side of the top wall; and a bottom wall, wherein the bottom wall is arranged opposite to the top wall and is perpendicular to the two side walls, wherein a clamping groove is respectively provided on one side of the two side walls close to the top wall or the bottom wall, wherein the clamping groove is used to accommodate a part of a dielectric plate on both sides of the circuit board or to accommodate a part of a pull rod fixedly connected to the dielectric plate.

Description

Technical Field

[0001] The utility model relates to the field of communication, and more specifically to a cavity for accommodating a phase shifter component, a phase shifter comprising the cavity for accommodating the phase shifter component, and an antenna comprising the phase shifter. Background Art

[0002] In traditional electrically tunable phase shifter antennas, the phase shifter is the core component of the antenna, and its size and weight are particularly critical. Currently, mainstream manufacturers are trying to reduce the cavity size and weight while meeting performance requirements.

[0003] In the technical solution disclosed in patent application WO2018 / 196713A1, the transmission rod is limited by adding ribs in the cavity, which requires a large gap between the dielectric plate and the transmission rod, so the dielectric plate needs to be further away from the cavity. This will cause the circuits on the circuit board of the phase shifter to move as well. This also reduces the actual space for the circuit layout on the circuit board, making the layout relatively more difficult. If you want a smooth layout, you need to increase the size of the cavity. Whether the dielectric plate moves toward the center of the cavity or the size of the cavity increases, the resonant frequency of the cavity will move to a lower frequency, which may interfere with the performance of the normal working frequency band.

[0004] For example, in the technical solution disclosed in patent application CN203787537U, the transmission rod is integrated with the dielectric plate, and then the transmission part is used directly to drive the dielectric plate to shift the phase, and the cavity does not have a limiting feature. Such a setting will cause the dielectric plate to be directly deformed by force, thereby changing the state of the actual covering circuit, resulting in deteriorated performance. In addition, there are usually electrical matching features between the dielectric plate and the circuit board. The deformation of the dielectric plate will also cause the circuit board to be stressed, which will affect the quality of the solder joints on the circuit board in the long run. Utility Model Content

[0005] In view of the deep understanding of the problems existing in the background technology, in order to maintain the miniaturization feature of the phase shifter cavity, and at the same time to ensure good contact between the dielectric plate and the circuit board, the inventor of the utility model proposes a new cavity for accommodating the phase shifter component. In summary, according to the cavity for accommodating the phase shifter component of the utility model, the cavity includes: a top wall; two side walls, the two side walls extend from the two side edges of the top wall to the same side of the top wall; and a bottom wall, the bottom wall is arranged opposite to the top wall and perpendicular to the two side walls, wherein the two side walls are respectively provided with a clamping groove on one side close to the top wall or the bottom wall, and the clamping groove is used to accommodate a part of the dielectric plate on both sides of the circuit board or to accommodate a part of the pull rod fixedly connected to the dielectric plate. Here, those skilled in the art should understand that "perpendicular to" here does not necessarily have to be absolutely perpendicular, for example, the range of 90°+ / -5° also falls within the protection scope of this case, as long as it is roughly vertical in shape.

[0006] In the cavity for accommodating the phase shifter component according to the utility model, a clamping groove is respectively provided on one side of the two side walls close to the top wall or the bottom wall, so as to limit the dielectric plate or the pull rod arranged therein, so that when the pull rod moves, the dielectric plate will not be subjected to force, thereby ensuring good contact between the dielectric plate and the circuit board. At the same time, the volume of the phase shifter cavity according to the utility model does not need to be increased, that is, the miniaturization advantage of the existing phase shifter cavity can be maintained.

[0007] Preferably, in an embodiment of the present invention, a groove wall of the clamping groove overlaps a portion of the bottom wall. In this way, the structure of the cavity can be further simplified and the formation of the medium plate or the pull rod accommodated therein can be facilitated.

[0008] Preferably, in an embodiment of the present invention, the top wall, the bottom wall and the two side walls are integrally formed, so as to facilitate the manufacturing process of the cavity for the phase shifter according to the present invention.

[0009] Preferably, in an embodiment of the present invention, the first groove, the second groove and the clamping groove include one of a guide groove, a T-slot and a dovetail groove. In this way, the function and form of the clamping groove can be further optimized, and the medium plate or the pull rod contained therein can be fixed and guided.

[0010] Preferably, in one embodiment of the present invention, there is a first groove in the top wall, which is configured to accommodate a first end of a circuit board for forming a phase shifter, and wherein there is a second groove in the bottom wall, which is configured to accommodate a second end of the circuit board opposite to the first end.

[0011] In addition, a second aspect of the present invention relates to a phase shifter, the phase shifter comprising:

[0012] The cavity according to the first aspect of the utility model;

[0013] A circuit board, wherein the circuit board is arranged in the cavity;

[0014] a dielectric plate, the dielectric plate being disposed in the cavity and disposed on both sides of the circuit board; and

[0015] A pull rod is mechanically connected to the medium plate.

[0016] In the phase shifter according to the present disclosure, a clamping groove is provided on one side of the two side walls close to the top wall or the bottom wall, so as to limit the dielectric plate or the pull rod disposed therein, so that when the pull rod moves, the dielectric plate will not be subjected to force, thereby ensuring good contact between the dielectric plate and the circuit board. At the same time, the volume of the phase shifter cavity according to the present invention does not need to be increased, that is, the miniaturization advantage of the existing phase shifter cavity can be maintained.

[0017] In one embodiment of the present invention, the phase shifter further comprises: a translation member, the translation member is mechanically connected to the pull rod and is provided with a mating portion on a side away from the pull rod that mechanically cooperates with a rotating member outside the phase shifter. In this way, the phase shifter according to the present invention can be driven from the outside to achieve the phase shifting function. Preferably, in one embodiment of the present invention, the mating portion is constructed as a rack or a concave tooth embedded in the translation member. More preferably, in one embodiment of the present invention, the translation member and the pull rod are integrally formed and are constructed to be accommodated in the cavity.

[0018] Preferably, in one embodiment of the present invention, a strip opening is provided in the pull rod so that the circuit board contacts the second groove via the strip opening. More preferably, in one embodiment of the present invention, a groove or a strip opening is provided on the circuit board, and the dielectric plates on both sides of the circuit board are fixed to each other via a fixing member passing through the groove or the strip opening. More preferably, in one embodiment of the present invention, the fixing member includes a limiting portion provided between the dielectric plates. More preferably, in one embodiment of the present invention, the dielectric plate has a boss extending into the clamping groove.

[0019] Furthermore, a third aspect of the present invention relates to an antenna, comprising: at least one phase shifter according to the second aspect of the present invention; and a reflection plate, wherein the reflection plate is coupled to the phase shifter.

[0020] In summary, in the cavity for accommodating the phase shifter component, the phase shifter and the corresponding antenna according to the utility model, a clamping groove is respectively provided on one side of the two side walls close to the top wall or the bottom wall, so as to limit the dielectric plate or the pull rod disposed therein, so that when the pull rod moves, the dielectric plate will not be subjected to force, thereby ensuring good contact between the dielectric plate and the circuit board. At the same time, the volume of the phase shifter cavity according to the utility model does not need to be increased, that is, the miniaturization advantage of the existing phase shifter cavity can be maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The embodiments are shown and explained with reference to the accompanying drawings. These drawings are used to explain the basic principles, and only the aspects necessary for understanding the basic principles are shown. These drawings are not to scale. In the drawings, the same reference numerals represent similar features.

[0022] Figure 1 A front view of a cavity 100 according to an embodiment of the present utility model is shown;

[0023] Figure 2 FIG. 2 shows a front view of a cavity 200 according to another embodiment of the present invention;

[0024] Figure 3 A schematic diagram 300 showing the connection between the pull rod and the dielectric block according to an embodiment of the utility model is shown;

[0025] Figure 4 A schematic diagram 400 showing the connection between the pull rod and the dielectric block according to another embodiment of the utility model is shown;

[0026] Figure 5A connection diagram 500 of two dielectric blocks according to an embodiment of the present utility model is shown;

[0027] Figure 6 A perspective view of a phase shifter 600 according to an embodiment of the present invention is shown; and

[0028] Figure 7 A perspective view of a phase shifter 700 of a driving member according to yet another embodiment of the present invention is shown.

[0029] Other features, characteristics, advantages and benefits of the present invention will become more apparent from the following detailed description in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0030] In the following specific description of the preferred embodiments, reference will be made to the attached drawings that constitute a part of the present invention. The attached drawings show, by way of example, specific embodiments that can implement the present invention. The illustrative embodiments are not intended to be exhaustive of all embodiments according to the present invention. It will be appreciated that other embodiments may be utilized, and structural or logical modifications may be made without departing from the scope of the present invention. Therefore, the following specific description is not restrictive, and the scope of the present invention is defined by the attached claims.

[0031] As mentioned above, in view of the deep understanding of the problems existing in the background technology, in order to maintain the miniaturization characteristics of the phase shifter cavity, and at the same time to ensure good contact between the dielectric plate and the circuit board, the inventor of the utility model proposes a new cavity for accommodating the phase shifter component. In summary, according to the cavity for accommodating the phase shifter component of the utility model, the cavity includes: a top wall; two side walls, the two side walls extend from the two side edges of the top wall to the same side of the top wall; and a bottom wall, the bottom wall is arranged opposite to the top wall and perpendicular to the two side walls, wherein the two side walls are respectively provided with a clamping groove on one side close to the top wall or the bottom wall, and the clamping groove is used to accommodate a part of the dielectric plate on both sides of the circuit board or to accommodate a part of the pull rod fixedly connected to the dielectric plate. Here, those skilled in the art should understand that "perpendicular to" here does not necessarily have to be absolutely perpendicular, for example, the range of 90°+ / -5° also falls within the protection scope of this case, as long as its shape is roughly vertical.

[0032] The following will refer to the attached Figure 1 To Attachment Figure 7 The cavity and the corresponding phase shifter according to the utility model are described in detail. Figure 1 FIG. 1 shows a front view of a cavity 100 according to an embodiment of the present utility model. Figure 2FIG. 2 shows a front view of a cavity 200 according to another embodiment of the present invention. Figure 3 A schematic diagram 300 showing the connection between the pull rod and the dielectric block according to an embodiment of the utility model is shown. Figure 4 A schematic diagram 400 showing the connection between the pull rod and the dielectric block according to another embodiment of the utility model is shown. Figure 5 A schematic diagram 500 showing the connection of two dielectric blocks according to an embodiment of the present utility model is shown. Figure 6 shows a perspective view of a phase shifter 600 according to an embodiment of the present invention, and Figure 7 A perspective view of a phase shifter 700 of a driving member according to yet another embodiment of the present invention is shown.

[0033] from Figure 1 It can be seen that the new cavity 100 for accommodating the phase shifter component proposed according to the present invention includes: a top wall 110; two side walls 120, the two side walls 120 extending from the two side edges of the top wall 110 to the same side (for example, the lower side) of the top wall 110; and a bottom wall 130, the bottom wall 130 is arranged opposite to the top wall 110 and perpendicular to the two side walls 120, wherein a clamping groove 121 is respectively provided on one side of the two side walls 120 close to the top wall 110 or the bottom wall 130, and the clamping groove 121 is used to accommodate a part of the dielectric plate (not shown in the figure) on both sides of the circuit board or to accommodate a part of the pull rod (not shown in the figure) fixedly connected to the dielectric plate or a part of the translation member connected to the pull rod. In the cavity 100 for accommodating the phase shifter component according to the utility model, a clamping groove 121 is respectively provided on one side of the two side walls 120 close to the top wall 110 or the bottom wall 130, so as to limit the dielectric plate, the pull rod or the translation member arranged therein, so that when the pull rod moves, the dielectric plate will not be subjected to force, thereby ensuring good contact between the dielectric plate and the circuit board. At the same time, the volume of the phase shifter cavity 100 according to the utility model does not need to be increased, that is, the miniaturization advantage of the existing phase shifter cavity 100 can be maintained.

[0034] In addition, from Figure 1 It can be seen that the two clamping grooves 121 can accommodate a portion of the dielectric plates (not shown in the figure) on both sides of the circuit board or a portion of the pull rod (not shown in the figure) fixedly connected to the dielectric plate, so that Figure 1 The upper and lower directions shown limit the accommodated dielectric plate or tie rod so that the dielectric plate or tie rod does not exert pressure on the circuit board, thereby ensuring the reliability of the electrical connection and reducing the risk of reduced life due to wear.

[0035] Here, those skilled in the art should understand that the clamping groove 121 is shown as being arranged at one end of the side wall 120 close to the bottom wall 130, but it is also feasible that the clamping groove 121 is arranged at one end of the side wall 120 close to the top wall 110, or it is even feasible to arrange the clamping groove 121 at an end of the side wall 120 that is neither close to the top wall 110 nor close to the bottom wall 130, but in the middle part, as long as it can meet the requirements of limiting and guiding the pull rod or the corresponding medium plate.

[0036] Optionally, in one embodiment according to the present disclosure, a first groove 111 is provided in the top wall 110, and the first groove 111 is configured to accommodate a first end (e.g., the upper end shown in the figure) of a circuit board (not shown in the figure) for forming a phase shifter, and a second groove 131 is provided in the bottom wall 130, and the second groove 131 is configured to accommodate a second end (e.g., the lower end) of the circuit board (not shown in the figure) opposite to the first end (e.g., the upper end).

[0037] And in Figure 1 In the embodiment shown, a groove wall (e.g., the lower groove wall) of the clamping groove 121 overlaps with a portion of the bottom wall 130. In this way, the structure of the cavity 100 can be further simplified, and the forming of the dielectric plate or the pull rod contained therein can be facilitated. Preferably, in one embodiment according to the present invention, the top wall 110, the bottom wall 130 and the two side walls 120 are integrally formed. In this way, the manufacturing process of the cavity 100 for the phase shifter according to the present invention can be facilitated. Further preferably, in one embodiment according to the present invention, the first groove 111, the second groove 121 and the clamping groove 131 include one of a guide groove, a T-slot and a dovetail groove. In this way, the function and form of the clamping groove 131 can be further optimized, and the fixing and guiding of the dielectric plate or the pull rod contained therein can be performed.

[0038] In order to further illustrate the limiting effect of the clamping groove, Figure 2 FIG. 2 shows a front view of a cavity 200 according to another embodiment of the present invention. Figure 2It can be seen that the new cavity 200 for accommodating the phase shifter component proposed in accordance with the present invention comprises: a top wall 210, in which there is a first groove 211, the first groove 211 is configured to accommodate a first end (e.g., the upper end shown in the figure) of a circuit board (not shown in the figure) for forming a phase shifter; two side walls 220, the two side walls 220 extending from two side edges of the top wall 210 to the same side (e.g., the lower side) of the top wall 210; and a bottom wall 230, the bottom wall 230 is arranged opposite to the top wall 210 and perpendicular to the top wall 210. The two side walls 220 are provided, and a second groove 231 is provided in the bottom wall 230, the second groove 231 is configured to accommodate the second end (e.g., the lower end) of the circuit board (not shown in the figure) opposite to the first end (e.g., the upper end), wherein a clamping groove 221 is provided on one side of the two side walls 220 close to the top wall 210 or the bottom wall 230, respectively, and the clamping groove 221 is used to accommodate a part of the dielectric plate (not shown in the figure) on both sides of the circuit board or to accommodate a part of the pull rod (not shown in the figure) fixedly connected to the dielectric plate. In the cavity 200 for accommodating the phase shifter component according to the utility model, a clamping groove 221 is provided on one side of the two side walls 220 close to the top wall 210 or the bottom wall 230, respectively, so as to limit the dielectric plate or the pull rod disposed therein, so that when the pull rod moves, the dielectric plate will not be subjected to force, thereby ensuring good contact between the dielectric plate and the circuit board. At the same time, the volume of the phase shifter cavity 200 according to the present invention does not need to be increased, that is, the advantage of the existing phase shifter cavity 200 being miniaturized can be maintained.

[0039] Here, those skilled in the art should understand that the clamping groove 221 is shown as being disposed at one end of the side wall 220 close to the bottom wall 230, but it is also feasible that the clamping groove 221 is disposed at one end of the side wall 220 close to the top wall 210, or it is even feasible to dispose the clamping groove 221 at an end of the side wall 220 that is neither close to the top wall 210 nor close to the bottom wall 230, but at a middle portion, as long as it can satisfy the requirements of limiting and guiding the pull rod or the corresponding medium plate.

[0040] And in Figure 2 In the embodiment shown, one groove wall (e.g., the lower groove wall) of the clamping groove 221 overlaps with a portion of the bottom wall 230. In this way, the structure of the cavity 200 can be further simplified, and the formation of the component 240 (e.g., a dielectric plate or a pull rod) accommodated therein can be facilitated, that is, the component 240 does not need to be manufactured in a step shape, but a flat block portion. Figure 2As can be seen, the two clamping grooves 221 can accommodate a portion of the components 240 on both sides of the circuit board, so that Figure 2 The upper and lower directions shown limit the member 240 accommodated in the housing so that the member 240 does not exert pressure on the circuit board, thereby ensuring the reliability of the electrical connection and reducing the risk of reduced life due to wear. Preferably, in one embodiment of the utility model, the top wall 210, the bottom wall 230 and the two side walls 220 are integrally formed. In this way, the manufacturing process of the cavity 200 for the phase shifter according to the utility model can be facilitated. Further preferably, in one embodiment of the utility model, the first groove 211, the second groove 231 and the clamping groove 221 include one of a guide groove, a T-slot and a dovetail groove. In this way, the function and form of the clamping groove 231 can be further optimized, and the medium plate or the pull rod contained therein can be fixed and guided.

[0041] also, Figure 2 The cavity 200 shown also includes a portion of a dielectric plate (the upper portion of the dielectric plate is not shown) on both sides of the circuit board accommodated in the clamping groove 221 or a portion of a pull rod fixedly connected to the dielectric plate, so as to limit the portion so that the force of driving the dielectric plate is not transmitted to the circuit board to cause force, thereby ensuring a good connection between the dielectric plate and the circuit board.

[0042] In order to accommodate a portion of the dielectric plates on both sides of the circuit board or a portion of the pull rods fixedly connected to the dielectric plates in the clamping grooves, the specific design can have a variety of possible mechanical structures. Figure 3 A schematic diagram 300 showing the connection between the pull rod and the dielectric block according to an embodiment of the utility model is shown. Figure 4 FIG. 4 shows a schematic diagram 400 of connecting a pull rod and a dielectric block according to another embodiment of the present invention. Figure 5 A connection diagram 500 of two dielectric blocks according to an embodiment of the present utility model is shown.

[0043] from Figure 3 It can be seen that the pull rod 350 has a notch 351 and an opening 352, wherein the opening 352 allows the circuit board to pass through the groove of the top wall or the bottom wall of the phase shifter cavity 300 to support the circuit board. On the other hand, the opening 352 also needs to reserve a sufficient length for the phase shifting purpose, so as not to block the movement of the pull rod during the phase shifting. In addition, the notch 351 can accommodate, for example, a bump 361 of the dielectric plate 360.

[0044] In addition to this connection method, Figure 4 FIG. 4 shows a schematic diagram 400 of connecting a pull rod and a dielectric block according to another embodiment of the present invention. Figure 4 It can be seen that the pull rod 450 has an opening 451 and an opening 452, wherein the opening 452 allows the circuit board to pass through and be accommodated in the groove of the top wall or the bottom wall of the phase shifter cavity 400, thereby achieving the purpose of supporting the circuit board. On the other hand, the opening 452 also needs to reserve a sufficient length for the purpose of phase shifting, so as not to block the movement of the pull rod during phase shifting. In addition, the opening 451 can accommodate, for example, the protrusion 461 of the dielectric plate 460. The protrusions of the dielectric blocks on both sides can also be accommodated in different openings, thereby achieving the positioning and fixation of the dielectric blocks.

[0045] If the protrusions of the dielectric blocks on both sides are accommodated in the same opening, a limiting feature can be set at the other end, specifically, Figure 5 As shown, a limiting portion 561 can be provided between the two dielectric plates 560 , so that the two dielectric plates 560 can have enough space and will not overly press the circuit board 570 .

[0046] also, Figure 6 FIG. 4 shows a three-dimensional diagram of a phase shifter 600 according to an embodiment of the present invention. Figure 6 As shown, the second aspect of the present invention relates to a phase shifter 600, which includes: a cavity 610 according to the first aspect of the present invention; a circuit board 620, which is arranged in the cavity 610; a dielectric plate 630, which is arranged in the cavity 610 and is arranged on both sides of the circuit board 620; and a pull rod 640, which is mechanically connected to the dielectric plate 630. In the phase shifter according to the content of the present disclosure, a clamping groove is respectively provided on one side of the two side walls close to the top wall or the bottom wall, so as to limit the dielectric plate or the pull rod arranged therein, so that when the pull rod moves, the dielectric plate will not be subjected to force, thereby ensuring good contact between the dielectric plate and the circuit board. At the same time, the volume of the phase shifter cavity according to the present invention does not need to be increased, that is, the miniaturization advantage of the existing phase shifter cavity can be maintained.

[0047] Figure 7 FIG. 2 shows a perspective view of a phase shifter 700 of a driving member according to another embodiment of the present utility model. Figure 7As shown, in one embodiment of the present invention, the phase shifter 700 includes, in addition to the dielectric plate 760 and the circuit board 770 to achieve the purpose of phase shifting, a translation member 780, the translation member 780 is mechanically connected to the pull rod (below the translation member 780, not shown in the figure) and is on a side away from the pull rod (for example Figure 7 A mating portion (e.g., a gear) is provided on the upper side of the phase shifter to mechanically mate with a transmission member 790 (e.g., a gear) outside the phase shifter. Figure 7 In this way, the phase shifter according to the present invention can be driven from the outside to achieve the phase shifting function. Preferably, in one embodiment of the present invention, the mating portion is configured as a rack or a concave tooth embedded in the translation member. More preferably, in one embodiment of the present invention, the translation member and the pull rod are integrally formed and configured to be accommodated in the cavity.

[0048] Preferably, in one embodiment of the present invention, a strip opening is provided in the pull rod so that the circuit board contacts the second groove via the strip opening. More preferably, in one embodiment of the present invention, a groove or a strip opening is provided on the circuit board, and the dielectric plates on both sides of the circuit board are fixed to each other via a fixing member passing through the groove or the strip opening. More preferably, in one embodiment of the present invention, the fixing member includes a limiting portion provided between the dielectric plates. More preferably, in one embodiment of the present invention, the dielectric plate has a boss extending into the clamping groove.

[0049] Furthermore, a third aspect of the present invention relates to an antenna, comprising: at least one phase shifter according to the second aspect of the present invention; and a reflection plate, wherein the reflection plate is coupled to the phase shifter.

[0050] In summary, in the cavity for accommodating the phase shifter component, the phase shifter and the corresponding antenna according to the utility model, a clamping groove is respectively provided on one side of the two side walls close to the top wall or the bottom wall, so as to limit the dielectric plate or the pull rod disposed therein, so that when the pull rod moves, the dielectric plate will not be subjected to force, thereby ensuring good contact between the dielectric plate and the circuit board. At the same time, the volume of the phase shifter cavity according to the utility model does not need to be increased, that is, the miniaturization advantage of the existing phase shifter cavity can be maintained.

[0051] Although different exemplary embodiments of the utility model have been described, it is obvious to those skilled in the art that different changes and modifications can be made, which can achieve one or some of the advantages of the utility model without departing from the spirit and scope of the utility model. For those skilled in the art, other components that perform the same function can be appropriately replaced. It should be understood that the features explained with reference to specific figures can be combined with the features of other figures, even in those cases where this is not explicitly mentioned. In addition, the method of the utility model can be implemented in a software implementation using all appropriate processor instructions or in a hybrid implementation using a combination of hardware logic and software logic to obtain the same result. Such modifications to the scheme according to the utility model are intended to be covered by the appended claims.

Claims

1. A cavity for accommodating a phase shifter component, characterized in that: The cavity comprises: Top wall; two side walls extending from two side edges of the top wall toward the same side of the top wall; and a bottom wall, the bottom wall being arranged opposite to the top wall and being perpendicular to the two side walls, Wherein, a clamping groove is respectively provided on one side of the two side walls close to the top wall or the bottom wall, and the clamping groove is used to accommodate a part of the dielectric plate on both sides of the circuit board or to accommodate a part of the pull rod fixedly connected to the dielectric plate.

2. The cavity according to claim 1, characterized in that: A groove wall of the clamping groove overlaps a portion of the bottom wall.

3. The cavity according to claim 1, characterized in that: The top wall, the bottom wall and the two side walls are integrally formed.

4. The cavity according to claim 1, characterized in that: There is a first groove in the top wall, the first groove being configured to accommodate a first end of a circuit board for forming a phase shifter, and wherein there is a second groove in the bottom wall, the second groove being configured to accommodate a second end of the circuit board opposite the first end.

5. The cavity according to claim 4, characterized in that: The first groove, the second groove and the clamping groove include one of a guide groove, a T-shaped groove and a dovetail groove.

6. A phase shifter, characterized in that: The phase shifter comprises: The chamber according to any one of claims 1 to 5; A circuit board, wherein the circuit board is arranged in the cavity; a dielectric plate, the dielectric plate being disposed in the cavity and disposed on both sides of the circuit board; and A pull rod is mechanically connected to the medium plate.

7. The phase shifter according to claim 6, characterized in that: The phase shifter also includes: A translation member is mechanically connected to the pull rod and is provided with a matching portion on a side away from the pull rod for mechanically matching with a rotating member outside the phase shifter.

8. The phase shifter according to claim 7, characterized in that The matching portion is configured as a rack or a concave tooth embedded in the translation member.

9. The phase shifter according to claim 7, characterized in that: The translation member and the pull rod are integrally formed and are configured to be accommodated in the cavity.

10. The phase shifter according to claim 6, characterized in that The pull rod is provided with a strip-shaped opening so that the circuit board contacts the second groove via the strip-shaped opening.

11. The phase shifter according to claim 6, characterized in that The circuit board is provided with a groove or a strip-shaped opening, and the dielectric plates on both sides of the circuit board are fixed to each other via fixing members passing through the groove or the strip-shaped opening.

12. The phase shifter according to claim 11, characterized in that The fixing member includes a limiting portion arranged between the medium plates.

13. The phase shifter according to claim 6, characterized in that The medium plate has a boss extending into the clamping groove.

14. An antenna, characterized in that: The antenna comprises: at least one phase shifter according to any one of claims 6 to 13; and A reflective plate, wherein the reflective plate is coupled to the phase shifter.

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