Tie rod connection mechanism, phase shifter and antenna

Abstract

The present invention provides a pull rod connection mechanism, a phase shifter and an antenna, wherein the pull rod connection mechanism is used to be arranged on the cavity of the phase shifter and connect the dielectric plate of the phase shifter with the pull rod, the cavity includes a top wall and a bottom wall respectively arranged at both ends in the thickness direction, and two side walls respectively arranged at both ends in the width direction, the pull rod connection mechanism includes at least one connecting member, the connecting member includes a connecting portion for being arranged outside the cavity and a driving portion which can penetrate into the cavity from the top wall or the bottom wall and connect with the dielectric plate in the cavity, and the connecting portion is provided with a pull rod fixing structure. In the pull rod connection mechanism provided by the present invention, the connecting member used for connecting with the pull rod can penetrate into the cavity from the top wall or the bottom wall of the phase shifter cavity and connect with the dielectric plate, that is, the pull rod can be arranged on the side of the cavity through the connecting member, thereby reducing the space occupied by the phase shifter in its length direction, and facilitating the miniaturization design of the antenna.

Description

Technical Field

[0001] The invention relates to the field of mobile communication technology, and in particular to a pull rod connection mechanism, a phase shifter and an antenna using the pull rod connection mechanism. Background Art

[0002] At present, in the field of mobile communication technology, with the continuous introduction of new standards and new spectrums, antenna equipment is required to support more spectrums. The resulting problems are that the phase shifting devices in the base station antenna are constantly increasing, the layout of the feeding network is becoming more and more complex, and the size of the phase shifter is constantly increasing.

[0003] In existing phase shifters, a pull rod is usually set at the front end of the cavity to drive the movement of the dielectric plate in the cavity, thereby adjusting the area of ​​the phase shift circuit covered by the dielectric plate, changing the dielectric constant of the phase shift circuit, and then achieving phase adjustment. This phase shift adjustment method will inevitably occupy the space at the front end of the phase shifter. When the internal space of the antenna is limited, it will bring difficulties to the layout of the phase shifter and it is difficult to free up enough space for phase adjustment. Summary of the invention

[0004] The primary objective of the present invention is to provide a pull rod connection mechanism which can reduce the space occupied by the phase shifter.

[0005] Another object of the present invention is to provide a phase shifter using the above-mentioned pull rod connection mechanism.

[0006] Another object of the present invention is to provide an antenna using the above phase shifter.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] As a first aspect, the present invention relates to a pull rod connection mechanism, which is used to be arranged on a cavity of a phase shifter and connect a dielectric plate of the phase shifter with a pull rod, wherein the cavity includes a top wall and a bottom wall respectively arranged at both ends in a thickness direction, and two side walls respectively arranged at both ends in a width direction, and the pull rod connection mechanism includes at least one connecting member, wherein the connecting member includes a connecting portion for being arranged outside the cavity and a driving portion which can penetrate into the cavity from the top wall or the bottom wall of the cavity and connect to the dielectric plate in the cavity, and the connecting portion is provided with a pull rod fixing structure.

[0009] Preferably, the pull rod fixing structure includes a limit column and two limit blocks arranged on the connecting part, the limit column is used to pass the pull rod, and the two limit blocks are arranged on both sides of the preset moving direction of the pull rod and together constitute a limit space for embedding the pull rod.

[0010] More preferably, a slot is provided at one end of the limiting column away from the connecting portion, and the pull rod connecting mechanism further comprises a clamping member clamped on the slot and used for pressing the pull rod against the connecting portion.

[0011] More preferably, the limiting column is provided with a limiting hole along the diameter direction thereof, and the clamping member comprises a limiting pin penetrating through the limiting hole.

[0012] Furthermore, the connecting portion includes a first connecting section for being arranged on the top wall or the bottom wall of the cavity and a second connecting section for being arranged on the side wall of the cavity, and the pull rod fixing structure is arranged on the second connecting section.

[0013] Preferably, there are two connecting members, wherein the first connecting section of one connecting member is used to be arranged on the top wall of the cavity, the first connecting section of the other connecting member is used to be arranged on the bottom wall of the cavity, and the second connecting sections of the two connecting members are located on the same side wall of the cavity and are used to be connected to the same pull rod; the first connecting section has an angle relative to the width direction of the cavity and / or the second connecting section has an angle relative to the thickness direction of the cavity, so that the second connecting sections of the two connecting members are staggered on the side wall.

[0014] As a second aspect, the present invention also relates to a phase shifter, comprising a cavity, a phase shifting circuit and a dielectric plate both arranged in the cavity, the dielectric plate being covered on the phase shifting circuit and movable along the length direction of the cavity, the phase shifter also comprising a pull rod and the above-mentioned pull rod connecting mechanism, at least one of the top wall and the bottom wall of the cavity being provided with a guide hole extending along the length direction, the pull rod being arranged outside the cavity, the connecting part of the connecting member being connected to the pull rod, and the driving part penetrating into the cavity through the guide hole and connected to the dielectric plate.

[0015] Preferably, at least one of the top wall and the bottom wall of the cavity is provided with a limiting structure extending along the length direction, and the limiting structure is connected to the connecting member and is used to limit the movement of the connecting member along the length direction.

[0016] Preferably, the phase shifter also includes a coaxial cable and a cable fixing, the coaxial cable is connected to the phase shifting circuit and passes through the cavity, the cable fixing is installed on the cavity and is provided with a cable limiting hole for passing the coaxial cable, and the cable fixing is also provided with a pull rod limiting hole for passing the pull rod.

[0017] Preferably, the cavity also includes a cavity formed by the top wall, the bottom wall and two side walls, and a partition arranged in the cavity, the partition divides the cavity into two receiving cavities arranged along the thickness direction, each receiving cavity is provided with the phase shifting circuit and the dielectric plate, and the dielectric plates in the two receiving cavities are connected to the pull rod connecting mechanism.

[0018] Optionally, a avoidance hole is formed on the partition plate at a position corresponding to the guide hole, and the driving part of the connecting member passes through the avoidance hole and is arranged in the two receiving chambers and is connected to the dielectric plates in the two receiving chambers at the same time.

[0019] As a third aspect, the present invention also relates to an antenna, comprising the above-mentioned phase shifter.

[0020] Compared with the prior art, the solution of the present invention has the following advantages:

[0021] 1. In the pull rod connection mechanism provided by the present invention, the connecting piece used to connect with the pull rod can penetrate into the cavity from the top wall or the bottom wall of the phase shifter cavity and connect with the dielectric plate, that is, the pull rod can be set on the side of the cavity through the connecting piece, thereby reducing the space occupied by the phase shifter in its length direction, and facilitating the miniaturization design of the antenna.

[0022] 2. In the pull rod connection mechanism provided by the present invention, a limit column and two limit blocks are provided on the connecting piece. The pull rod can be passed through the limit column to achieve connection with the pull rod, and the two limit blocks are used to limit and fix the pull rod, thereby ensuring a tight connection between the connecting piece and the pull rod, avoiding shaking or rotation of the pull rod relative to the connecting piece, and then the driving force on the pull rod can be accurately transmitted to the connecting piece, thereby ensuring the stability and accuracy of the phase shift adjustment.

[0023] 3. In the pull rod connection mechanism provided by the present invention, the connecting portion of the connecting piece includes a first connecting section and a second connecting section, and the connecting portion can be extended from the top wall or bottom wall of the cavity to the side wall, so that the pull rod can be arranged on the side wall without increasing the thickness of the phase shifter.

[0024] 4. The pull rod connection mechanism provided by the present invention can be provided with two connecting parts. When two sets of phase shifting circuits and dielectric plates are provided in the cavity along the thickness direction, two connecting parts are respectively inserted into the cavity from the top wall and the bottom wall to be connected with the two dielectric plates one by one. Then, the second connecting sections of the two connecting parts are arranged on the same side wall of the cavity and connected with the same pull rod. One pull rod can drive the movement of the two dielectric plates. The assembly structure is simple and the transmission effect is good.

[0025] 5. In the phase shifter provided by the present invention, at least one limiting structure in the top wall and the bottom wall of the cavity limits the moving direction of the connecting member by the limiting structure, so as to ensure that the connecting member can drive the dielectric plate to move in a preset direction. When the pull rod or the pull rod connecting mechanism is subjected to forces in other directions, the limiting structure can also be used to block and bear forces, thereby preventing forces in other directions from being directly transmitted to the dielectric plate and driving the dielectric plate to move in an abnormal direction, thereby effectively protecting the dielectric plate and the mobile circuit.

[0026] 6. In the phase shifter provided by the present invention, a pull rod limiting hole is provided on the cable fixing part, and the coaxial cable and the pull rod can be limited and fixed at the same time through one accessory, ensuring that the pull rod can move smoothly during the phase shift adjustment process, further improving the stability and accuracy of the phase shift adjustment.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description, which will become obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0029] Figure 1 A three-dimensional diagram of a phase shifter provided in accordance with a first embodiment of the present invention;

[0030] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the phase shifter along the length direction is shown;

[0031] Figure 3 for Figure 1 A three-dimensional view of a connecting member of a pull rod connecting mechanism in a phase shifter shown;

[0032] Figure 4 for Figure 3 The connecting member is shown as a front view facing the second connecting section;

[0033] Figure 5 for Figure 1 A three-dimensional view of a clamping member of a pull rod connection mechanism in a phase shifter shown;

[0034] Figure 6 A three-dimensional diagram of a phase shifter provided in accordance with a second embodiment of the present invention;

[0035] Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure of the phase shifter along the length direction is shown;

[0036] Figure 8 for Figure 6A three-dimensional view of the connecting piece of the pull rod connecting mechanism in the phase shifter shown. DETAILED DESCRIPTION

[0037] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be interpreted as limiting the present invention.

[0038] It will be understood by those skilled in the art that, unless specifically stated, the term "comprising" used in the specification of the present invention refers to the presence of the features, integers, steps, operations, parts / components and / or assemblies, but does not exclude the presence or addition of one or more other features, integers, steps, operations, parts / components, assemblies and / or their groups. It should be understood that when we say a part / component is "connected" to another part / component, it can be directly connected to the other part / component, or there can be intermediate parts / components. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0039] Figures 1 to 8 The phase shifter provided in an embodiment of the present invention is collectively shown, which is used to be arranged in an antenna to realize phase adjustment of the antenna signal. Since a pull rod connecting mechanism is provided for installing the pull rod on the side of the cavity, the overall structure of the phase shifter is more reasonable and compact, which effectively reduces the occupied space inside the antenna while ensuring good performance, thereby facilitating the miniaturization design of the antenna.

[0040] Please combine Figure 1 and Figure 2 The phase shifter 1000 includes a cavity 1, a phase shift circuit 2 and a dielectric plate 3 both arranged in the cavity 1, and a coaxial cable 4 connected to the phase shift circuit 2 and passing through the outside of the cavity 1, wherein one end of the coaxial cable 4 away from the phase shift circuit 2 is used to connect to a radiation unit in an antenna, and the dielectric plate 3 is covered on the phase shift circuit 2 and can move along the length direction of the cavity 1.

[0041] Specifically, the phase shift circuit 2 is a circuit with a phase shift function printed on a PCB board. By adjusting the position of the dielectric plate 3, the area of ​​the phase shift circuit 2 covered by the dielectric plate 3 can be changed, thereby adjusting the dielectric constant of the phase shift circuit 2 to achieve antenna phase adjustment.

[0042] Preferably, the cavity 1 includes a top wall 11 and a bottom wall 12 respectively arranged at both ends in the thickness direction, and two side walls 13 respectively arranged at both ends in the width direction. The top wall 11, the bottom wall 12 and the two side walls 13 together enclose a cavity, and the phase shifting circuit 2 and the dielectric plate 3 are both arranged in the cavity.

[0043] Preferably, at least one of the top wall 11 and the bottom wall 12 is provided with a guide hole 100 extending along the length direction of the cavity 1, and the phase shifter 1000 further comprises a tie rod connection mechanism 5 connected to the dielectric plate 3 and a tie rod 6 mounted on the tie rod connection mechanism 5. The tie rod connection mechanism 5 comprises at least one connecting member 51, the connecting member 51 comprises a connecting portion 511 and a driving portion 512, and a tie rod fixing structure 513 provided on the connecting portion 511, the connecting portion 511 is provided outside the cavity 1 and is connected to the tie rod 6 through the tie rod fixing structure 513, and the driving portion 512 penetrates into the cavity 1 from the guide hole 100 and is connected to the dielectric plate 3 in the cavity 1.

[0044] The pull rod 6 can drive the pull rod connection mechanism 5 to move along the guide hole 100, thereby driving the medium plate 3 to move and achieve phase adjustment. The pull rod 6 can be arranged on the side of the cavity 1 through the connecting member 51. Compared with the structure in which the pull rod 6 is arranged at the front end of the cavity 1, the pull rod 6 can be effectively prevented from being pulled out beyond the cavity 1 during phase adjustment, thereby reducing the space occupied by the phase shifter 1000 in its length direction.

[0045] like Figure 3 As shown, the pull rod fixing structure 513 includes a limit column 5131 and two limit blocks 5132 arranged on the connecting part 511, and the two limit blocks 5132 are respectively arranged on both sides of the preset moving direction of the pull rod 6 and jointly constitute a limit space adapted to the pull rod 6, the pull rod 6 is passed through the limit column 5131 and embedded in the limit space, and the pull rod 6 is jointly limited and fixed by the limit column 5131 and the two limit blocks 5132, thereby ensuring the tight connection between the connecting member 51 and the pull rod 6, avoiding the pull rod 6 from shaking or rotating relative to the connecting member 51, and thereby enabling the driving force on the pull rod 6 to be accurately transmitted to the connecting member 51, thereby ensuring the stability and accuracy of the phase shift adjustment.

[0046] Preferably, the connecting portion 511 includes a first connecting section 5111 for being arranged on the top wall 11 or the bottom wall 12 and a second connecting section 5112 for being arranged on the side wall 13, and the pull rod fixing structure 513 is arranged on the second connecting section 5112, that is, the connecting portion 511 is extended from the top wall 11 or the bottom wall 12 to the side wall 13, so that the pull rod 6 can be arranged on the side wall 13, thereby avoiding increasing the thickness of the phase shifter 1000.

[0047] like Figure 2As shown, the cavity 1 also includes a partition 14 arranged in the cavity, and the partition 14 divides the cavity into two receiving cavities (unnumbered, the same below) arranged along the thickness direction, and each receiving cavity is provided with the phase shifting circuit 2 and the dielectric plate 3, and the dielectric plates 3 in the two receiving cavities are connected to the pull rod connecting mechanism 5.

[0048] Preferably, the pull rod connecting mechanism 5 includes two connecting members 51, wherein the first connecting section 5111 of one connecting member 51 is arranged on the top wall 11, and the first connecting section 5111 of the other connecting member 51 is arranged on the bottom wall 12, the two connecting members 51 are connected to the two dielectric plates 3 one by one, and the second connecting sections 5112 of the two connecting members 51 are located on the same side wall 13 of the cavity 1 and are used to connect to the same pull rod 6, and the movement of the two dielectric plates 3 can be driven by one pull rod 6, the assembly structure is simple and the transmission effect is good.

[0049] Please combine Figure 4 , the second connecting section 5112 has an angle with respect to the thickness direction of the cavity 1, that is, the second connecting section 5112 is arranged at an angle. When the two connecting members 51 are symmetrically arranged on the top wall 11 and the bottom wall 12, the second connecting sections 5112 of the two connecting members 51 can be staggered on the side wall 13, so that the tie rod fixing structures 513 of the two connecting members 51 can be connected to the tie rod 6, and while the connecting members 51 and the tie rod 6 are assembled, the two connecting members 51 can be connected into a whole through the tie rod 6, thereby improving the connection strength between the tie rod connection mechanism 5 and the tie rod 6.

[0050] It should be understood that in other embodiments, the first connecting section 5111 may also have an angle with respect to the width direction of the cavity 1. The first connecting section 5111 is tilted, and the second connecting sections 5112 of the two connecting members 51 can also be staggered on the side wall 13.

[0051] Please combine Figure 5 The pull rod connection mechanism 5 also includes a clamping member 52. A clamping groove 5131A is provided at one end of the limiting column 5131 away from the connecting portion 511. The clamping member 52 is clamped on the clamping groove 5131A. The pull rod 6 is pressed against the connecting portion 511 by the clamping member 52 to strengthen and fix the pull rod 6.

[0052] Preferably, the limiting column 5131 is provided with a limiting hole 5131B along its diameter direction, and the clamping member 52 includes a clamping ring 521 clamped on the clamping groove 5131A and a limiting pin 522 arranged on the clamping ring 521 and passed through the limiting hole 5131B, and the circumferential fixation of the clamping ring 521 and the limiting column 5131 is achieved by the limiting pin 522, and the loosening caused by the rotation of the clamping ring 521 relative to the limiting column 5131 is improved.

[0053] Please combine Figure 2 and Figure 3 Preferably, the cavity 1 further comprises a limiting structure 200 provided on at least one of the top wall 11 and the bottom wall 12 and extending in the length direction of the cavity. The limiting structure 200 is a limiting flange for limiting the moving direction of the connecting member 51. The connecting member 51 is provided with a limiting groove 514 at a position corresponding to the limiting structure 200. The connecting member 51 is embedded in the limiting flange through the limiting groove 514 and is fixed relative to the cavity 1. The moving direction of the connecting member 51 is limited by the limiting structure 200, which ensures that the connecting member 51 can drive the dielectric plate 3 to move in a preset direction. When the pull rod 6 or the pull rod connection mechanism 5 is subjected to forces in other directions, the limiting structure 200 can also block and bear forces, thereby preventing forces in other directions from being directly transmitted to the dielectric plate 3 and driving the dielectric plate 3 to move in an abnormal direction, thereby effectively protecting the dielectric plate 3 and the mobile circuit 2.

[0054] It is worth noting that the cavity 1 is integrally formed by a pultrusion process, that is, the limiting structure 200 is directly generated on the top wall 11 or the bottom wall 12 to ensure the strength and accuracy of the limiting structure 200. However, in other embodiments, the limiting structure 200 may also be a structure such as a slide groove or a guide rail that is later assembled on the top wall 11 or the bottom wall 12, which can also limit and fix the connecting member 51, improve the movement accuracy of the dielectric plate 3, and protect the phase shift circuit 2 and the dielectric plate 3.

[0055] like Figure 1 As shown, the phase shifter 1000 also includes a cable fixing part 7, which is installed on the cavity 1 and has a cable limiting hole 71 at a position corresponding to the side wall 13, and one end of the coaxial cable 4 passing through the cavity 1 is passed through the cable limiting hole 71, and the coaxial cable 4 is limited and fixed by the cable limiting hole 71.

[0056] Preferably, the cable fixing member 7 is further provided with a pull rod limiting hole 72, and the pull rod 6 is passed through the pull rod limiting hole 72. That is, the coaxial cable 4 and the pull rod 6 can be simultaneously limited and fixed by the cable fixing member 7, so as to ensure that the pull rod 6 can move smoothly during the phase shift adjustment process, thereby further improving the stability and accuracy of the phase shift adjustment.

[0057] Furthermore, the specific position of the cable fixing member 7 can be adjusted according to the force requirement of the pull rod 6, and it can be arranged at the end of the cavity 1 or at the middle of the cavity 1. In addition, one or more cable fixing members 7 can be provided. When the length of the cavity 1 is long, the common limiting of multiple cable fixing members 7 ensures that the pull rod 6 and the coaxial cable 4 can be stably fixed at the corresponding preset positions.

[0058] Please combine Figure 6 and Figure 7 In another embodiment, the pull rod connection mechanism 5 may also include only one connecting member 51, and the partition 14 is provided with an avoidance hole 141 at the position corresponding to the guide hole 100. The driving part 512 of the connecting member 51 passes through the avoidance hole 141 and is arranged in the two receiving cavities and is connected to the medium plates 3 in the two receiving cavities at the same time, that is, it is connected to the two medium plates 3 only through one connecting member 51, and can also drive the two medium plates 3 to move at the same time.

[0059] Please combine Figure 8 Since the pull rod connection mechanism 5 only includes one connecting member 51, the connecting portion 511 of the connecting member 51 can be placed entirely on the top wall 11 or the bottom wall 12, without being bent to the side wall 13 to be connected to another connecting member 51 to form a whole, the structure is simpler and more compact, and the overall strength is higher.

[0060] Preferably, in this embodiment, the pull rod fixing structure 513 on the connecting member 51 includes two limiting columns 5131 arranged on the connecting portion 511 with a spacing, and the pull rod 6 is simultaneously passed through the two limiting columns 5131, so that the pull rod 6 is connected and fixed relative to the connecting member 51, and the limiting effect of the two limiting columns 5131 prevents the pull rod 6 from rotating or shaking relative to the connecting member 51, so that the pull rod 6 can be closely matched with the connecting member 51. In addition, the force-bearing area on the connecting member 51 can be increased by the two limiting columns 5131, so as to ensure that the driving force provided by the pull rod 6 can be accurately transmitted to the connecting member 51.

[0061] On the other hand, the present invention also relates to an antenna (not shown in the figure, the same below), including the above-mentioned phase shifter 1000. Since the pull rod 6 in the phase shifter 1000 is arranged on the side of the cavity 1, the space occupied by the phase shifter 1000 in its length direction can be reduced. While ensuring good performance, the structure is more compact, which can effectively simplify the overall layout of the antenna, improve the integration of the antenna design to achieve miniaturization of the antenna, and ensure antenna performance.

[0062] The above descriptions are only some embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pull rod connection mechanism, used to be arranged on a cavity of a phase shifter and connect a dielectric plate of the phase shifter with a pull rod, wherein the cavity comprises a top wall and a bottom wall respectively arranged at two ends in a thickness direction, and two side walls respectively arranged at two ends in a width direction, characterized in that: The pull rod connection mechanism includes at least one connecting member, the connecting member includes a connecting portion for being arranged outside the cavity and a driving portion that can penetrate into the cavity from the top wall or bottom wall of the cavity and is connected to the medium plate in the cavity, the connecting portion is provided with a pull rod fixing structure, the pull rod fixing structure includes a limit column and two limit blocks arranged on the connecting portion, the limit column is used to penetrate the pull rod, the two limit blocks are respectively arranged on both sides of the preset moving direction of the pull rod and together constitute a limit space for embedding the pull rod, the connecting portion includes a first connecting section and a second limit block for being arranged on the top wall or bottom wall of the cavity A second connecting section is used to be arranged on the side wall of the cavity, the pull rod fixing structure is arranged on the second connecting section, and two connecting members are provided, wherein the first connecting section of one connecting member is used to be arranged on the top wall of the cavity, and the first connecting section of the other connecting member is used to be arranged on the bottom wall of the cavity, and the second connecting sections of the two connecting members are located on the same side wall of the cavity and are used to be connected to the same pull rod; the first connecting section has an angle relative to the width direction of the cavity and / or the second connecting section has an angle relative to the thickness direction of the cavity, so that the second connecting sections of the two connecting members are staggered on the side wall.

2. The pull rod connection mechanism according to claim 1, characterized in that: A clamping groove is provided at one end of the limiting column away from the connecting portion, and the pull rod connecting mechanism further comprises a clamping member clamped on the clamping groove and used for pressing the pull rod tightly against the connecting portion.

3. The pull rod connection mechanism according to claim 2, characterized in that: The limiting column is provided with a limiting hole along the diameter direction thereof, and the clamping member comprises a limiting pin penetrating the limiting hole.

4. A phase shifter, comprising a cavity, a phase shift circuit and a dielectric plate both arranged in the cavity, wherein the dielectric plate is covered on the phase shift circuit and can move along the length direction of the cavity, characterized in that: It also includes a pull rod and a pull rod connecting mechanism as described in any one of claims 1 to 3, at least one of the top wall and the bottom wall of the cavity is provided with a guide hole extending along the length direction, the pull rod is arranged outside the cavity, the connecting part of the connecting member is connected to the pull rod, and the driving part penetrates into the cavity through the guide hole and is connected to the medium plate.

5. The phase shifter according to claim 4, characterized in that: At least one of the top wall and the bottom wall of the cavity is provided with a limiting structure extending along the length direction, and the limiting structure is connected to the connecting member and is used to limit the movement of the connecting member along the length direction.

6. The phase shifter according to claim 4, characterized in that It also includes a coaxial cable and a cable fixing part. The coaxial cable is connected to the phase shifting circuit and passes through the cavity. The cable fixing part is installed on the cavity and is provided with a cable limiting hole for passing the coaxial cable. The cable fixing part is also provided with a pull rod limiting hole for passing the pull rod.

7. The phase shifter according to claim 4, characterized in that: The cavity also includes a cavity formed by the top wall, the bottom wall and two side walls, and a partition arranged in the cavity, the partition divides the cavity into two receiving cavities arranged along the thickness direction, each receiving cavity is provided with the phase shifting circuit and the dielectric plate, and the dielectric plates in the two receiving cavities are connected to the pull rod connecting mechanism.

8. The phase shifter according to claim 7, characterized in that The partition plate is provided with an avoidance hole at a position corresponding to the guide hole, and the driving part of the connecting member is penetrated into the two receiving chambers through the avoidance hole and is connected to the dielectric plates in the two receiving chambers at the same time.

9. An antenna, characterized in that: Comprising a phase shifter as claimed in any one of claims 4 to 7.

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