Compact stackable antenna phase shifter

Abstract

Disclosed in the present invention is a compact stackable antenna phase shifter, comprising a mounting base on which idler gears are rotatably mounted, wherein a rack is engaged and fitted with one circumferential side of the idler gears; the rack moves in the length direction of the rack; a driving clamping plate is engaged and fitted with the other circumferential side of the idler gears; an end of the driving clamping plate extends to form a sector gear engaged with the idler gears. The compact stackable antenna phase shifter further comprises a scale ruler that moves synchronously with the rack, and the movement direction of the scale ruler is opposite to the rotation direction of the sector gear. The linear movement of the rack is transmitted to the driving clamping plate by means of the idler gears, and in a phase shifting process, the movement directions of the driving clamping plate and the rack are opposite, so that the scale ruler located on an antenna adapter side can be retracted inward in the case of 0 degrees, thereby achieving a compact and ingenious overall structure; the transmission structure makes the overall force applied relatively linear, effectively increasing a moment arm without increasing the overall size, and greatly facilitating improving and ensuring the angle accuracy while saving the space; and the two idler gears have the function of relay transmission, effectively reducing the size of the sector gear and achieving good practicability.

Description

A compact, stackable antenna phase shifter Technical Field

[0001] This invention relates to the field of base station antenna technology, and in particular to a compact, stackable antenna phase shifter. Background Technology

[0002] The phase shifter is one of the core components of an electrically tunable antenna. An electrically tunable antenna can remotely control and adjust the phase shifter to change the antenna's beam tilt angle as needed. Among them, the sector-shaped phase shifter has stable performance, low cost, and wide application.

[0003] In the existing fan-shaped PCB phase shifter, power transmission is carried out by a linkage slider mechanism. This power transmission structure is unevenly stressed, with greater resistance at the beginning and end points and less resistance in the middle. Furthermore, the angular accuracy of the phase shifter is affected by the length of the lever arm. The longer the lever arm, the higher the accuracy, but the longer the lever arm will inevitably increase the overall size of the phase shifter.

[0004] Furthermore, the space available for antenna back-end network layouts is becoming increasingly limited. This necessitates reducing the space occupied by phase shifters on the antenna back end. Changing the phase shifter layout and reducing the space occupied by phase shifters has become a continuous theme in antenna research and development. Existing electrically tunable antennas generally use a multi-layered, overhead mounting structure for their phase shifters, resulting in high cost and large size.

[0005] Summary of the Invention

[0006] To address the aforementioned issues, this invention provides a compact and stackable antenna phase shifter with a reasonable structure, resulting in a relatively linear force distribution across the entire structure. It also effectively increases the power transmission arm, saving space while significantly improving and ensuring angular accuracy, thus offering excellent practicality.

[0007] The technical solution adopted in this invention is as follows:

[0008] A compact, stackable antenna phase shifter includes a mounting base on which an idler wheel is rotatably mounted. A rack is meshed on one side of the idler wheel's circumference and moves along its length under the drive of an external power mechanism. An active clip is rotatably mounted on the mounting base on the other side of the idler wheel's circumference, with the end of the active clip extending to form a sector gear that meshes with the idler wheel. The device also includes a scale that moves synchronously with the rack, with the scale moving in the opposite direction to the rotation of the sector gear.

[0009] As a further improvement to the above technical solution:

[0010] Two idler wheels are spaced apart along the length of the rack, and the two idler wheels are always engaged with the rack; at least one of the two idler wheels is engaged with the sector gear at the end of the driving clamp, and the two idler wheels take turns engaging with the sector gear in a relay manner; the sector gear has an outwardly convex arc-shaped structure, and the outwardly convex arc surface of the outwardly convex arc-shaped structure has teeth that engage with the idler wheels.

[0011] When the active clamping plate is perpendicular to the rack, the sector gear meshes with both idler gears. The two idler gears are located at the meshing edges at both ends of the sector gear, and the two idler gears are arranged symmetrically relative to the active clamping plate.

[0012] The bottom surface of the sector gear extends with a swinging protrusion that passes downward through the mounting base. The mounting base has an arc-shaped groove for the swinging protrusion to pass through and swing. The bottom surface of the end of the active clamping piece extends downward with a central protrusion that passes downward through the mounting base. The central protrusion forms the rotation axis of the active clamping piece. The arc-shaped groove is centered on the axis of the central protrusion.

[0013] PCB phase shifters are mounted on the top and bottom surfaces of the mounting base, and two PCB phase shifters are clamped back to back on the mounting base. A swivel is attached to the side of each PCB phase shifter. The central protrusion and the swing protrusion on the bottom surface of the active clamping plate pass downwards through the upper swivel, the upper PCB phase shifter, the mounting base, the lower PCB phase shifter, and the lower swivel in sequence. The passive clamping plate is mounted at the bottom of the central protrusion and the swing protrusion.

[0014] The active clamping plate and the passive clamping plate extend outwards towards the corresponding sliding plate to form spaced protrusions that abut against the side of the sliding plate. The active clamping plate is fixed to the passive clamping plate via a central protrusion and a swinging protrusion, and drives the sliding plate to adhere to the corresponding PCB phase shifting plate.

[0015] The bottom ends of the central protrusion and the swing protrusion are respectively recessed to form an circumferential groove. The passive clamp is provided with a through hole for the central protrusion and the swing protrusion to pass through. An elastic clamping structure extends from the opening below the through hole and is clamped in the circumferential groove.

[0016] The bottom surface of the mounting base extends downward to form a column, and the top surface of the mounting base corresponding to the column is recessed to form a locking hole; the column on the bottom surface of the mounting base is fitted into the locking hole on the top surface of other mounting bases to form a stacked structure.

[0017] The bottom end of the swinging protrusion in the upper mounting base is fitted downwards into the recessed hole on the top surface of the sector gear in the lower mounting base; an idler gear is rotatably mounted on one of the mounting bases, and a rack and a drive clamp are meshed on both sides of the idler gear's circumference.

[0018] The bottom end of the column extends downward to form a buckle, and the buckle is a stepped hole that is smaller at the top and larger at the bottom. The buckle is engaged in the stepped hole. A limiting piece also extends laterally on the column above the buckle hole.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention features a compact and rational structure. The linear movement of the rack is transmitted to the active clamp via an idler wheel, so that the movement of the active clamp and the rack is opposite during phase shifting. This allows the scale located on the antenna connector side to retract inward at 0 degrees. The overall structure is compact and ingenious. Furthermore, this transmission structure ensures that the entire structure experiences relatively linear force. Without increasing the overall size, it effectively increases the transmission arm, saving space while greatly contributing to lifting and ensuring angular accuracy. It is highly practical.

[0021] The present invention also includes the following advantages:

[0022] The active clamping plate, rack, and idler gear with sector gears are all located on the same side of the mounting base. This effectively increases the transmission arm while keeping the space occupied by the transmission structure relatively unchanged. This makes the rack need to move a longer linear distance to rotate the active clamping plate by the same angle, thus achieving higher angular accuracy.

[0023] Two idler gears are arranged between the rack and the sector gear. The double idler gears have the function of relay transmission, which ensures smooth transmission and effectively reduces the distance between the top of the sector gear and the rack, reduces the size of the sector gear, and reduces the size of the transmission mechanism, thus saving space.

[0024] Two idler gears mesh with the rack simultaneously. Compared to a single idler gear, the double idler gears play a relay transmission role. When the sector gear disengages from the first idler gear, the second idler gear takes over the transmission. The sector gear can be designed with fewer teeth to meet the required stroke.

[0025] PCB phase shifters and sliders are installed on both sides of the mounting base to form a phase shifter. Compared with the existing layered and overhead structure, two sets of phase shifters can be installed on one mounting base, which effectively saves installation space. In addition, multiple mounting bases can be stacked to install multiple sets of phase shifters, which is convenient to install. Furthermore, multiple sets of phase shifters can be moved synchronously by a single rack and pinion, achieving a one-to-many effect. Attached Figure Description

[0026] Figure 1 is a schematic diagram of the structure of the present invention.

[0027] Figure 2 is an exploded view of the present invention.

[0028] Figure 3 is a schematic diagram of the installation of the active clamp and the passive clamp of the present invention.

[0029] Figure 4 is a schematic diagram of the usage state of the present invention.

[0030] Figure 5 is a schematic diagram of the present invention in a stacked state.

[0031] Figure 6 is a schematic diagram of the explosion in Figure 5.

[0032] Figure 7 is a schematic diagram of the structure of the column on the mounting base of the present invention.

[0033] The components include: 1. rack; 2. mounting base; 3. idler wheel; 4. coaxial cable; 5. PCB phase shifter; 6. active clamping plate; 7. dicing plate; 8. passive clamping plate.

[0034] 10. Pull rod; 20. Screw; 30. Rotation drive power; 40. Scale;

[0035] 11. Inverted T-shaped strip;

[0036] 21. Arc-shaped groove; 22. Column; 23. L-shaped block; 24. Insertion column; 25. Mounting hole; 221. Limiting piece; 222. Buckle;

[0037] 61. Sector gear; 62. Central protrusion; 63. Oscillating protrusion; 611. Concave hole; 621. Circumferential groove;

[0038] 81. Protruding; 82. Flexible snap-fit ​​structure. Detailed Implementation

[0039] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0040] As shown in Figures 1 and 2, a compact stackable antenna phase shifter of this embodiment includes a mounting base 2, on which an idler wheel 3 is rotatably mounted. A rack 1 is meshed on one side of the circumference of the idler wheel 3. The rack 1 moves along its own length under the drive of an external power mechanism. An active clamp 6 is rotatably mounted on the mounting base 2 on the other side of the circumference of the idler wheel 3. The end of the active clamp 6 extends to form a sector gear 61 that meshes with the idler wheel 3. The device also includes a scale 40 that moves synchronously with the rack 1. The direction of movement of the scale 40 is opposite to the direction of rotation of the sector gear 61.

[0041] In this embodiment, the linear movement of the rack 1 is transmitted to the active clamp 6 via the idler wheel 3, so that the movement of the active clamp 6 and the rack 1 is opposite during the phase shift process. This allows the scale 40 located on the antenna connector side to retract inward at 0 degrees. The overall structure is compact and ingenious, and the transmission structure makes the whole structure relatively linear in force distribution, and also effectively increases the transmission arm.

[0042] In the embodiment shown in Figure 4, the rack 1 is fixed to the end of the pull rod 10, and the pull rod 10 is powered to the output end of the rotation drive power 30 via the screw 20. A scale 40 is also fixedly mounted on the pull rod 10. When the rotation drive power 30 is working, the pull rod 10 pulls the rack 1 to move, which in turn drives the active clamp 6 to rotate relative to the mounting base 2 via the idler wheel 3. Simultaneously, the pull rod 10 drives the scale 40 to move synchronously. In practical use, the rotation drive power 30 can be a motor or other standard component that outputs rotational power.

[0043] When the lever 10 moves to the right in Figure 4, the scale 40 and the rack 1 move to the right, and the idler wheel 3 rotates clockwise to the right, driving the sector gear 61 and the active clamp 6 to rotate counterclockwise to the left relative to the mounting base 2. Thus, when the active clamp 6 rotates to 0 degrees relative to the mounting base 2, the scale 40 can retract to the right into the antenna.

[0044] In this embodiment, a transmission structure in which rack 1, idler wheel 3, and sector gear 61 mesh with each other is adopted. The active clamp 6 with sector gear 61, rack 1, and idler wheel 3 are all located on the same side of the mounting base 2. The transmission arm is effectively increased while the space occupied by the transmission structure remains relatively unchanged. This makes it possible for rack 1 to move a longer straight distance to rotate active clamp 6 by the same angle, thereby achieving higher angular accuracy.

[0045] Two idler gears 3 are spaced apart along the length of the rack 1, and the two idler gears 3 are always engaged with the rack 1; at least one of the two idler gears 3 is engaged with the sector gear 61 at the end of the driving clamp 6, and the two idler gears 3 are engaged with the sector gear 61 in turn in a relay manner; the sector gear 61 has an outward convex arc structure, and the outward convex arc surface of the outward convex arc structure has teeth that are engaged with the idler gears 3.

[0046] In this embodiment, two idler wheels 3 are arranged between the rack 1 and the sector gear 61. The double idler wheels have the function of relay transmission, which ensures smooth transmission and effectively reduces the distance between the top of the sector gear 61 and the rack 1, reduces the size of the sector gear 61, and reduces the size of the transmission mechanism, thus saving space.

[0047] Two idler gears 3 mesh with rack 1 simultaneously. Compared with a single idler gear, the double idler gears play the role of relay transmission. When the sector gear 61 disengages from the first idler gear 3, the second idler gear 3 takes over the transmission. The sector gear 61 can be designed with fewer teeth to meet the required stroke.

[0048] In practical use, power transmission can also be achieved by setting the sector gear 61 as an inwardly concave arc structure; however, the sector gear 61 with an outwardly convex arc structure can reduce the distance between the rotation center of the sector gear 61 and the rack 1, which helps to reduce the overall space.

[0049] In practical use, an idler wheel 3 can also be arranged between the rack 1 and the sector gear 61 to achieve power transmission. However, the arrangement of two idler wheels 3 further reduces the distance between the sector gear 61 and the rack 1.

[0050] When the active clamp 6 is perpendicular to the rack 1, the sector gear 61 meshes with both idler gears 3. The two idler gears 3 are located at the meshing edges at both ends of the sector gear 61, and the two idler gears 3 are arranged symmetrically with respect to the active clamp 6.

[0051] In this embodiment, the two idler wheels 3 are symmetrically arranged, which not only realizes power transmission, but also makes the overall device and the force more balanced, so that the active clamp 6 rotates smoothly and smoothly relative to the mounting base 2.

[0052] As shown in Figure 3, the bottom surface of the sector gear 61 extends with a swinging protrusion 63 that passes downward through the mounting base 2. The mounting base 2 is provided with an arc-shaped groove 21 for the swinging protrusion 63 to pass through and swing. The bottom surface of the end of the active clamp 6 extends downward with a central protrusion 62 that passes downward through the mounting base 2. The central protrusion 62 constitutes the rotation axis of the active clamp 6. The arc-shaped groove 21 is centered on the axis of the central protrusion 62.

[0053] When the rack 1 moves, the idler wheel 3 drives the active clamp 6 to rotate relative to the mounting base 2 with the central protrusion 62 as the center. At the same time, the movement of the swing protrusion 63 relative to the arc groove 21 guides and limits the rotation of the active clamp 6.

[0054] PCB phase shifters 5 are mounted on the top and bottom surfaces of the mounting base 2, respectively. The two PCB phase shifters 5 are clamped back to back on the mounting base 2, effectively saving space in the height direction. Sliding plates 7 are attached to the sides of each PCB phase shifter 5. The central protrusion 62 and the swing protrusion 63 on the bottom surface of the active clamping plate 6 pass downward through the upper sliding plate 7, the upper PCB phase shifter 5, the mounting base 2, the lower PCB phase shifter 5, and the lower sliding plate 7 in sequence. The passive clamping plate 8 is installed at the bottom of the central protrusion 62 and the swing protrusion 63, thus forming a set of phase shifters, which are provided with fan-shaped phase shifters on both the front and back sides.

[0055] In this embodiment, PCB phase shifters 5 and slider 7 are installed on both sides of the mounting base 2 to form a phase shifter. Compared with the existing layered and overhead structure, two sets of phase shifters are installed on one mounting base 2, which effectively saves installation space.

[0056] In this embodiment, the active clamping plate 6, the sliding plate 7, and the passive clamping plate 8 are integrated into a rotating structure via the swinging protrusion 63 and the central protrusion 62, with the central protrusion 62 serving as the center and the swinging protrusion 63 serving as the rotation guide. When the active clamping plate 6 rotates, the swinging protrusion 63 drives the upper and lower sliding plates 7 and the lower passive clamping plate 8 to rotate synchronously, thereby realizing the synchronous phase shift operation of the top and bottom surfaces of the mounting base 2 and achieving phase angle adjustment.

[0057] The active clamping piece 6 and the passive clamping piece 8 extend outwards towards the corresponding sliding piece 7 to form protrusions 81 spaced apart. The protrusions 81 abut against the side of the sliding piece 7. The active clamping piece 6 is fixed to the passive clamping piece 8 via the central protrusion 62 and the swing protrusion 63, and drives the sliding piece 7 to adhere to the corresponding PCB phase shifting piece 5.

[0058] In actual operation, the installation is completed by aligning and fastening the active clamp 6 and the passive clamp 8. The operation is convenient. At the same time, the protrusion 81 promotes and ensures that the sliding plate 7 is closely attached to the PCB phase shifting plate 5.

[0059] The bottom ends of the central protrusion 62 and the swing protrusion 63 are respectively recessed to form an circumferential groove 621. The passive clamping piece 8 is provided with a through hole for the central protrusion 62 and the swing protrusion 63 to pass through. An elastic clamping structure 82 extends from the opening below the through hole and is clamped in the circumferential groove 621.

[0060] During installation, the central protrusion 62 and the swing protrusion 63 are respectively fitted downward into the through hole of the passive clamping piece 8 until the elastic clamping structure 82 is retracted and clamped in the circumferential groove 621, thus completing the quick clamping between the active clamping piece 6 and the passive clamping piece 8.

[0061] In this embodiment, the elastic snap-fit ​​structure 82 can be a multi-lobed structure arranged at intervals along the circumference. The end dimensions of the central protrusion 62 and the swing protrusion 63 are slightly larger than the multi-lobed structure in the elastic inward state, so that the multi-lobed structure can elastically inward at the circumferential groove 621 to achieve snap-fit.

[0062] In this embodiment, cable clamps can also be extended and arranged on the mounting base 2. The coaxial cable 4 can be fastened by the cable clamps before welding, which is convenient to operate and effectively ensures the efficiency and effect of the installation of the coaxial cable 4, and ensures its layout consistency and reliability.

[0063] In the embodiment shown in Figure 2, L-shaped blocks 23 facing each other are spaced apart along a straight line on the mounting base 2. The bottom end of the rack 1 extends into an inverted T-shaped bar 11. The bottom end of the rack 1 is fitted to the inner side of each pair of L-shaped blocks 23. The pairs of L-shaped blocks 23 together form the movement guide of the rack 1. The rack 1 is installed on the mounting base 2 through the pairs of L-shaped blocks 23. The structure is simplified, the assembly is convenient, and the use is smooth.

[0064] In the embodiment shown in Figure 2, the top surface of the mounting base 2 extends upward to form an insert post 24 corresponding to the idler wheel 3, and the top end of the insert post 24 extends outward in a circumferential direction to form an inverted structure; after the idler wheel 3 is inserted into the insert post 24 from top to bottom, the inverted structure restricts the idler wheel 3, so as to realize the quick and reliable installation of the idler wheel 3 on the mounting base 2.

[0065] As shown in Figures 5 and 6, the bottom surface of the mounting base 2 extends downward to form a column 22, and the top surface of the mounting base 2 corresponding to the column 22 is recessed to form a mounting hole 25; the column 22 on the bottom surface of the mounting base 2 is fitted into the mounting hole 25 on the top surface of other mounting bases 2 to form a stacked structure, thereby forming two or more sets of stacked phase shifters.

[0066] In this embodiment, stacking multiple mounting bases 2 vertically can realize the installation of multiple sets of phase shifters, which is convenient for installation. It can also realize the synchronous operation of multiple sets of phase shifters under the drive of a single rack 1, which serves as the moving power, thus achieving the effect of one driving multiple.

[0067] The bottom end of the swinging protrusion 63 in the upper mounting base 2 is fitted downward to the concave hole 611 on the top surface of the sector gear 61 in the lower mounting base 2 to realize the power transmission between multiple sets of phase shifters so as to operate synchronously; an idler wheel 3 is rotatably mounted on one of the mounting bases 2, and a rack 1 and an active clamp 6 are meshed on both sides of the circumference of the idler wheel 3 to serve as the driving power for multiple sets of phase shifters.

[0068] In this embodiment, when two or more sets of phase shifters are stacked and synchronously driven via the mounting base 2, only one set of rack and pinion 1 transmission mechanism is needed, and the other set is synchronously driven by the upper and lower connection of the swing protrusion 63.

[0069] In actual operation, an active clamp 6 can be installed in one set of phase shifters, which meshes with the idler wheel 3 for transmission, while the active clamp 6 in other sets of phase shifters is passively operated or can be directly replaced by a passive clamp 8 for installation and use.

[0070] As shown in Figure 7, the bottom end of the column 22 extends downward to form a buckle 222, and the mounting hole 25 is a stepped hole that is smaller at the top and larger at the bottom. The buckle 222 is mounted into the stepped hole. A limiting piece 221 also extends laterally on the column 22 above the mounting hole 25.

[0071] In this embodiment, the fastener 222 is inserted into the stepped hole to achieve quick assembly between the upper and lower mounting bases 2, and the insertion depth of the column 22 is limited by the limiting piece 221. Thus, the fastener 222 and the limiting piece 221 are combined to achieve relative fixation between the two mounting bases 2 after the fastener is inserted, so that they remain stable with each other.

[0072] In this embodiment, the antenna phase shifter adopts a plastic snap-fit ​​structure during installation. For example, the idler wheel 3 is snapped into the insertion post 24 for installation, the active clip 6 is installed via the lower central protrusion 62 and the swing protrusion 63 with the passive clip 8, and the mounting bases 2 are stacked and installed via the column 22. The overall installation is convenient and fast, effectively improving the operating efficiency.

[0073] The transmission structure in the phase shifter of this invention makes the whole body relatively linear in terms of force, effectively increasing the transmission arm, and greatly helping to improve and ensure angular accuracy while saving space, thus having good practicality.

[0074] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0075] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A compact, stackable antenna phase shifter, characterized in that: The device includes a mounting base (2), on which an idler wheel (3) is rotatably mounted. A rack (1) is meshed on one side of the circumference of the idler wheel (3). The rack (1) moves along its own length under the drive of an external power mechanism. An active clamp (6) is rotatably mounted on the mounting base (2) on the other side of the circumference of the idler wheel (3). The end of the active clamp (6) extends to form a sector gear (61) that meshes with the idler wheel (3). The device also includes a scale (40) that moves synchronously with the rack (1). The direction of movement of the scale (40) is opposite to the direction of rotation of the sector gear (61).

2. A compact, stackable antenna phase shifter as described in claim 1, characterized in that: Two idler wheels (3) are spaced apart along the length of the rack (1), and the two idler wheels (3) are always engaged with the rack (1); at least one of the two idler wheels (3) is engaged with the sector gear (61) at the end of the driving clamp (6), and the two idler wheels (3) are engaged with the sector gear (61) in turn in a relay manner; the sector gear (61) has an outward convex arc structure, and the outward convex arc surface of the outward convex arc structure has teeth that are engaged with the idler wheels (3).

3. A compact, stackable antenna phase shifter as described in claim 2, characterized in that: When the active clamp (6) is perpendicular to the rack (1), the sector gear (61) meshes with both idler gears (3). The two idler gears (3) are located at the meshing edges at both ends of the sector gear (61), and the two idler gears (3) are arranged symmetrically relative to the active clamp (6).

4. A compact, stackable antenna phase shifter as described in claim 1, characterized in that: The bottom surface of the sector gear (61) extends a swinging protrusion (63) that passes downward through the mounting base (2). The mounting base (2) is provided with an arc-shaped groove (21) for the swinging protrusion (63) to pass through and swing. The bottom surface of the end of the active clamp (6) extends downward with a central protrusion (62) that passes downward through the mounting base (2). The central protrusion (62) constitutes the rotation axis of the active clamp (6). The arc-shaped groove (21) is centered on the axis of the central protrusion (62).

5. A compact, stackable antenna phase shifter as described in claim 4, characterized in that: The mounting base (2) has PCB phase shifters (5) installed on its top and bottom surfaces respectively. The two PCB phase shifters (5) are clamped back to back on the mounting base (2). Each PCB phase shifter (5) has a sliding plate (7) attached to its side. The central protrusion (62) and swing protrusion (63) on the bottom surface of the active clamping plate (6) pass through the upper sliding plate (7), the upper PCB phase shifter (5), the mounting base (2), the lower PCB phase shifter (5), and the lower sliding plate (7) in sequence. The passive clamping plate (8) is installed at the bottom of the central protrusion (62) and the swing protrusion (63).

6. A compact, stackable antenna phase shifter as described in claim 5, characterized in that: The active clamping piece (6) and the passive clamping piece (8) facing the corresponding slitting piece (7) extend outward to form protrusions (81) spaced apart, and the protrusions (81) abut against the side of the slitting piece (7); the active clamping piece (6) is fixed to the passive clamping piece (8) by a central protrusion (62) and a swing protrusion (63), and drives the slitting piece (7) to adhere to the corresponding PCB phase shifting piece (5).

7. A compact, stackable antenna phase shifter as described in claim 5 or 6, characterized in that: The bottom ends of the central protrusion (62) and the swing protrusion (63) are respectively recessed to form an circumferential groove (621). The passive clamp (8) is provided with a through hole for the central protrusion (62) and the swing protrusion (63) to pass through. An elastic clamping structure (82) extends from the opening below the through hole and is clamped in the circumferential groove (621).

8. A compact, stackable antenna phase shifter as described in claim 4, characterized in that: The bottom surface of the mounting base (2) extends downward to form a column (22), and the top surface of the mounting base (2) corresponding to the column (22) is recessed to form a mounting hole (25); the column (22) on the bottom surface of the mounting base (2) is fitted into the mounting hole (25) on the top surface of other mounting bases (2) to form a stacked structure.

9. A compact, stackable antenna phase shifter as described in claim 8, characterized in that: The bottom end of the swing protrusion (63) in the upper mounting base (2) is fitted downward into the concave hole (611) on the top surface of the sector gear (61) in the lower mounting base (2); an idler wheel (3) is rotatably mounted on one of the mounting bases (2), and a rack (1) and a drive clamp (6) are meshed on both sides of the circumference of the idler wheel (3).

10. A compact, stackable antenna phase shifter as described in claim 8, characterized in that: The bottom end of the column (22) extends downward to form a buckle (222), and the mounting hole (25) is a stepped hole that is smaller at the top and larger at the bottom. The buckle (222) is mounted into the stepped hole. A limiting piece (221) also extends laterally on the column (22) above the mounting hole (25).

Images