Multi-frequency antenna positioning and phase-shifting linkage device and antenna

Abstract

The application discloses a kind of multi-frequency antenna position selection phase shift linkage device and antenna, position selection phase shift linkage device includes position selection mechanism, including position selection drive device, position selection screw, first position selection phase shift gear assembly And the second position selection phase shift gear assembly connected with first position selection phase shift gear assembly;Phase shift mechanism, including phase shift drive device, parallelly arranged phase shift adjusting rod with position selection screw And a plurality of phase shift racks vertically arranged with phase shift adjusting rod;The structure of the application is relatively simple and stable, only two transmissions are used to control multiple position selection phase shift controls, each transmission is combined by the cooperation between different gears, and the overall position selection phase shift device is laid out in the preset direction and has a flat structure, which can significantly reduce the size in the height direction, reduce the size of the adjustment device, thereby reducing the size of the base station antenna, which is conducive to the development trend of miniaturization.

Description

Technical Field

[0001] This invention relates to the field of antenna technology, and in particular to a multi-frequency antenna selection phase shift linkage device and antenna. Background Technology

[0002] With the rapid development of mobile communication technology, the types of antennas are also increasing. Multi-band antennas have been widely used in various places due to their excellent performance. In order to adjust the electrical downtilt angle of each frequency band, multi-band antennas need to selectively drive the phase shifter through a dedicated phase shifting transmission mechanism. At present, the integration of base station antennas is increasing, the number of frequency bands is increasing, and the antenna width is wider. If the frequency band of the antenna needs to be increased urgently, it will make the transmission system structure more complex and bulky, affecting the reliability of the multi-band antenna. Moreover, the height dimension of the original circumferentially distributed positioning adjustment device will increase after expansion, resulting in an increase in the overall thickness of the antenna, which is not conducive to the miniaturization of multi-band antennas. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, the present invention proposes a multi-frequency antenna selective phase shift linkage device and antenna.

[0004] One embodiment of the present invention provides a technical solution to solve its technical problem: a multi-frequency antenna selection phase shift linkage device, comprising:

[0005] The positioning mechanism includes a positioning drive device, a positioning screw, a first positioning phase-shifting gear assembly, and a second positioning phase-shifting gear assembly connected to the first positioning phase-shifting gear assembly. The positioning drive device is used to drive the positioning screw to rotate. The first positioning phase-shifting gear assembly is connected to the positioning screw so that the first and second positioning phase-shifting gear assemblies can move along the axial direction of the positioning screw.

[0006] The phase-shifting mechanism includes a phase-shifting drive device, a phase-shifting adjustment rod arranged parallel to the selection screw, and several phase-shifting racks arranged perpendicular to the phase-shifting adjustment rod. The phase-shifting adjustment rod is connected to a first selection phase-shifting gear assembly and a second selection phase-shifting gear assembly. The phase-shifting drive device is used to drive the phase-shifting adjustment rod to rotate, and can drive the phase-shifting racks to move back and forth when the first selection phase-shifting gear assembly and the second selection phase-shifting gear assembly mesh with the phase-shifting racks. The phase-shifting racks are connected one-to-one with the phase shifters to realize the phase-shifting motion of the phase shifters.

[0007] Furthermore, the positioning drive device includes a positioning input sleeve, a positioning input driving bevel gear, and a positioning input driven bevel gear. The positioning input driven bevel gear is connected to the positioning screw, and the positioning input driving bevel gear is connected to the positioning input sleeve and meshes with the positioning input driven bevel gear. The positioning input sleeve is driven to rotate by a corresponding motor, and the positioning screw is driven to rotate by the positioning input driving bevel gear and the positioning input driven bevel gear.

[0008] Furthermore, the first selection phase shift gear assembly includes a first gearbox and a first phase shift adjustment drive gear and a first phase shift adjustment driven gear disposed in the first gearbox. The first gearbox is provided with an internal threaded hole that is threadedly connected to the selection screw. The first phase shift adjustment drive gear is connected to the phase shift adjustment rod and meshes with the first phase shift adjustment driven gear. The first phase shift adjustment driven gear can mesh with the phase shift rack.

[0009] The second phase-shifting gear assembly includes a second gearbox and a second phase-shifting adjustment drive gear and a second phase-shifting adjustment driven gear disposed within the second gearbox. The second gearbox is placed on a guide rod and connected to the first gearbox via a connecting rod. The second phase-shifting adjustment drive gear is connected to the phase-shifting adjustment rod and meshes with the second phase-shifting adjustment driven gear. The second phase-shifting adjustment driven gear can mesh with a phase-shifting rack.

[0010] Furthermore, the first phase-shifting adjustment drive gear is sleeved on the phase-shifting adjustment rod, and can slide along the circumference of the phase-shifting adjustment rod and rotate synchronously with the phase-shifting adjustment rod; the second phase-shifting adjustment drive gear is sleeved on the phase-shifting adjustment rod, and can slide along the circumference of the phase-shifting adjustment rod and rotate synchronously with the phase-shifting adjustment rod.

[0011] Furthermore, a first rotating shaft is provided inside the first gearbox, and an internal threaded hole is opened inside the first rotating shaft. A first phase-shifting adjustment driven gear is sleeved on the first rotating shaft. A second rotating shaft is provided inside the second gearbox, and a through hole is provided inside the second rotating shaft. A guide rod passes through the through hole, and a second phase-shifting adjustment driven gear is sleeved on the second rotating shaft.

[0012] Furthermore, the phase-shifting drive device includes a phase-shifting input shaft sleeve, a phase-shifting input driving bevel gear, and a phase-shifting input driven bevel gear. The phase-shifting input driven bevel gear is connected to the phase-shifting adjustment rod, and the phase-shifting input driving bevel gear is connected to the phase-shifting input shaft sleeve and meshes with the phase-shifting input driven bevel gear. The phase-shifting input shaft sleeve is driven to rotate by a corresponding motor, and the phase-shifting adjustment rod is driven to rotate by the phase-shifting input driving bevel gear and the phase-shifting input driven bevel gear.

[0013] Furthermore, there are at least two phase-shifting racks, and a locking mechanism is provided on the phase-shifting racks.

[0014] Furthermore, the locking mechanism includes a locking buckle sleeved on the phase-shifting rack, a locking gear and a reset spring disposed in the inner cavity of the locking buckle. The locking gear is located above the phase-shifting rack and meshes with the phase-shifting rack. The locking buckle is provided with a slot that can abut against the locking gear to restrict the phase-shifting rack from moving back and forth. The reset spring is used to lift the locking buckle.

[0015] Furthermore, the top of the locking buckle is provided with a protrusion, and the first and second selective phase shifting gear assemblies are provided with unlocking rods. The unlocking rods can press down the locking buckle against the protrusions, causing the locking gear to disengage from the slot, so that the locking gear can rotate, thereby allowing the phase shifting rack to move back and forth.

[0016] An antenna, including the aforementioned selective phase-shift linkage device.

[0017] The beneficial effects of this invention are as follows: A multi-frequency antenna selection and phase shift linkage device and antenna. The selection and phase shift linkage device includes a selection mechanism, comprising a selection drive device, a selection screw, a first selection phase shift gear assembly, and a second selection phase shift gear assembly connected to the first selection phase shift gear assembly. The selection drive device drives the selection screw to rotate. The first selection phase shift gear assembly is connected to the selection screw so that the first and second selection phase shift gear assemblies can move axially along the selection screw. The phase shift mechanism includes a phase shift drive device, a phase shift adjustment rod arranged parallel to the selection screw, and a plurality of phase shift racks arranged perpendicular to the phase shift adjustment rod. The phase shift adjustment rod is connected to the first selection phase shift gear assembly and the second selection phase shift gear assembly. The phase gear assembly is connected, and the phase shifting drive device is used to drive the phase shifting adjustment rod to rotate. It can also drive the phase shifting rack to move back and forth when the first and second phase shifting gear assemblies mesh with the phase shifting rack. The phase shifting rack is connected to the phase shifter in a one-to-one correspondence to realize the phase shifting movement of the phase shifter. The structure of the present invention is relatively simple and stable. It can control multiple phase shifting control components with only two transmission paths. Each transmission path is connected through the mutual cooperation between different gears. The overall phase shifting device is laid flat along a preset direction and has a flat structure, which can significantly reduce the size in the height direction and reduce the volume of the adjustment device, thereby reducing the volume of the base station antenna and contributing to the trend of miniaturization. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of a multi-frequency antenna selective phase shift linkage device at the first angle.

[0020] Figure 2 for Figure 1 Enlarged view of a portion of the image;

[0021] Figure 3 This is a schematic diagram of the first part of a multi-frequency antenna selective phase shift linkage device.

[0022] Figure 4 This is a schematic diagram of the second part of a multi-frequency antenna selective phase shift linkage device.

[0023] Figure 5 This is a schematic diagram of the first structure of the first selective displacement phase gear assembly;

[0024] Figure 6 This is a schematic diagram of the second structure of the first selective phase gear assembly;

[0025] Figure 7 This is a schematic diagram of a multi-frequency antenna selective phase-shift linkage device at a second angle.

[0026] Figure 8 This is a schematic diagram of the phase-shifting rack and pinion mechanism and the locking mechanism.

[0027] Figure 9 A schematic diagram of the anti-locking buckle and anti-locking gear;

[0028] Figure 10 This is a schematic diagram of the phase-shifting rack in the locked state;

[0029] Figure 11 This is a schematic diagram of the phase-shifting rack in the unlocked state. Detailed Implementation

[0030] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.

[0031] In the description of this invention, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0032] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0033] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integrally formed connection; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0034] Reference Figures 1 to 11 A multi-frequency antenna selective phase shift linkage device, comprising:

[0035] The positioning mechanism includes a positioning drive device 10, a positioning screw 20, a first positioning phase gear assembly 30, and a second positioning phase gear assembly 40 connected to the first positioning phase gear assembly 30. The positioning drive device 10 is used to drive the positioning screw 20 to rotate. The first positioning phase gear assembly 30 is connected to the positioning screw 20 so that the first positioning phase gear assembly 30 and the second positioning phase gear assembly 40 can move along the axial direction of the positioning screw 20.

[0036] The phase-shifting mechanism includes a phase-shifting drive device 50, a phase-shifting adjustment rod 60 arranged parallel to the selection screw 20, and a plurality of phase-shifting racks 70 arranged perpendicular to the phase-shifting adjustment rod 60. The phase-shifting adjustment rod 60 is connected to the first selection phase-shifting gear assembly 30 and the second selection phase-shifting gear assembly 40. The phase-shifting drive device 50 is used to drive the phase-shifting adjustment rod 60 to rotate, and can drive the phase-shifting racks 70 to move back and forth when the first selection phase-shifting gear assembly 30 and the second selection phase-shifting gear assembly 40 are engaged with the phase-shifting racks 70. The phase-shifting racks 70 are connected one-to-one with the phase shifters to realize the phase-shifting movement of the phase shifters.

[0037] In this invention, the positioning mechanism and the phase shifting mechanism are mounted as a whole on the base. Specifically, the positioning screw 20, guide rod 42, phase shifting adjustment rod 60, positioning input bushing 11, phase shifting input bushing 51, phase shifting rack 70, positioning input driving bevel gear 12, positioning input driven bevel gear 13, phase shifting input driving bevel gear 52, and phase shifting input driven bevel gear 53 are all connected to their respective fixed seats. Of course, the connection here is either a fixed connection or a rotatable connection. For example, the positioning screw 20 is rotatably connected to its corresponding fixed seat.

[0038] Further, the positioning process is as follows: The positioning input sleeve 11 rotates under the drive of the motor in the RCU that it is connected to. Under the transmission of the positioning input driving bevel gear 12 and the positioning input driven bevel gear 13, the positioning screw 14 rotates. Since the positioning screw 14 is threadedly connected to the internal threaded hole 34 on the first gearbox 31, and the first gearbox 31 is also connected to the base through the guide rod, the rotational motion of the positioning screw 14 will be converted into the linear motion of the first gearbox 31 along the axial direction of the positioning screw 14. The second gearbox 41 is connected to the first gearbox 31 through the connecting rod 43, and the second gearbox 41 is also connected to the base through the guide rod 43. Therefore, the second gearbox 41 will also be driven to move linearly along the axial direction of the positioning screw 14, so that the first phase shift adjustment driven gear 33 on the first gearbox 31 and the second phase shift adjustment driven gear on the second gearbox 41 move to the required phase shift rack 70.

[0039] Furthermore, the rotation adjustment process is as follows: (Refer to...) Figure 7-11 When the first phase-shifting driven gear 33 and the second phase-shifting driven gear move to the desired phase-shifting rack 70, the unlocking lever 90 on the first and second phase-shifting gear assemblies 30 and 40 presses the locking buckle 81 downward through the protrusion 812 on the locking buckle 81. The slot 811 on the locking buckle 81 disengages from the locking gear 82, and the locking gear 82 is in a freely rotatable state, that is, the phase-shifting rack 70 is in an unlocked state and can move back and forth; specifically, the phase-shifting input The bushing 51 rotates under the drive of the motor in the RCU that it is connected to. Under the transmission of the phase-shifting input active bevel gear 52 and the phase-shifting input driven bevel gear 53, it drives the phase-shifting adjustment rod 60 to rotate. In turn, it drives the first phase-shifting adjustment active gear 32 on the first gearbox 31 to drive the first phase-shifting adjustment driven gear 33 to rotate, and drives the second phase-shifting adjustment driven gear on the second gearbox 41 to rotate, so that the phase-shifting rack 70 moves, realizing the phase-shifting motion of the phase shifter.

[0040] The advantages of this invention are: the structure is relatively simple and stable, and multiple selective phase shift control components can be controlled by only two transmission paths. Each transmission path is connected through the mutual cooperation between different gears. The overall selective phase shift device is laid out in a flat structure along a preset direction, which can significantly reduce the size in the height direction and reduce the volume of the adjustment device, thereby reducing the volume of the base station antenna, which is conducive to the development trend of miniaturization.

[0041] The positioning drive device 10 includes a positioning input sleeve 11, a positioning input drive bevel gear 12, and a positioning input driven bevel gear 13. The positioning input driven bevel gear 13 is connected to the positioning screw 20. The positioning input drive bevel gear 12 is connected to the positioning input sleeve 11 and meshes with the positioning input driven bevel gear 13. The positioning input sleeve 11 is driven to rotate by a corresponding motor, and the positioning screw 20 is driven to rotate by the positioning input drive bevel gear 12 and the positioning input driven bevel gear 13.

[0042] The first selection phase shift gear assembly 30 includes a first gearbox 31 and a first phase shift adjustment drive gear 32 and a first phase shift adjustment driven gear 33 disposed in the first gearbox 31. The first gearbox 31 is provided with an internal thread hole 34 that is threadedly connected to the selection screw 20. The first phase shift adjustment drive gear 32 is connected to the phase shift adjustment rod 60 and meshes with the first phase shift adjustment driven gear 33. The first phase shift adjustment driven gear 33 can mesh with the phase shift rack 70.

[0043] The second phase-shifting gear assembly 40 includes a second gearbox 41 and a second phase-shifting adjustment drive gear and a second phase-shifting adjustment driven gear disposed in the second gearbox 41. The second gearbox 41 is placed on the guide rod 42 and connected to the first gearbox 31 through the connecting rod 43. The second phase-shifting adjustment drive gear is connected to the phase-shifting adjustment rod 60 and meshes with the second phase-shifting adjustment driven gear. The second phase-shifting adjustment driven gear can mesh with the phase-shifting rack 70.

[0044] Specifically, the cross-sectional outline of the phase-shifting adjustment rod 60 is preferably a regular hexagon. Both the first phase-shifting adjustment drive gear 32 and the second phase-shifting adjustment drive gear are preferably provided with regular hexagonal holes. The phase-shifting adjustment rod 60 is inserted into the regular hexagonal holes on the first phase-shifting adjustment drive gear 32 and the second phase-shifting adjustment drive gear. The first phase-shifting adjustment drive gear 32 and the second phase-shifting adjustment drive gear are rotatably mounted in the first gearbox 31 and the second gearbox 41, respectively. This allows the first phase-shifting adjustment drive gear 32 to slide circumferentially along the phase-shifting adjustment rod 60 and rotate synchronously with it, while the second phase-shifting adjustment drive gear can also slide circumferentially along the phase-shifting adjustment rod 60 and rotate synchronously with it, thus realizing the positioning movement and phase-shifting transmission.

[0045] A first rotating shaft 311 is provided inside the first gearbox 31, and an internal threaded hole 34 is opened inside the first rotating shaft 311. A first phase-shifting adjustment driven gear 33 is sleeved on the first rotating shaft 311. A second rotating shaft is provided inside the second gearbox 41, and a through hole 411 is provided inside the second rotating shaft. A guide rod 42 passes through the through hole 411, and a second phase-shifting adjustment driven gear is sleeved on the second rotating shaft. The first rotating shaft 311 is integrally formed on the first gearbox 31, and a first side cover plate is provided on the first gearbox 31. After the first phase-shifting adjustment driven gear 33 is sleeved on the first rotating shaft 311, the side cover plate is used to close it. The second rotating shaft is integrally formed on the second gearbox 41, and a second side cover plate is provided on the second gearbox 41. After the second phase-shifting adjustment driven gear is sleeved on the second rotating shaft, the second side cover plate is used to close it.

[0046] The phase-shifting drive device 50 includes a phase-shifting input shaft sleeve 51, a phase-shifting input driving bevel gear 52, and a phase-shifting input driven bevel gear 53. The phase-shifting input driven bevel gear 53 is connected to the phase-shifting adjustment rod 60. The phase-shifting input driving bevel gear 52 is connected to the phase-shifting input shaft sleeve 51 and meshes with the phase-shifting input driven bevel gear 53. The phase-shifting input shaft sleeve 51 is driven to rotate by a corresponding motor, and the phase-shifting adjustment rod 60 is driven to rotate by the phase-shifting input driving bevel gear 52 and the phase-shifting input driven bevel gear 53.

[0047] There are at least two phase-shifting racks 70, and a locking mechanism 80 is provided on each phase-shifting rack 70. The phase-shifting racks 70 can be distributed on different sides of the input section or on the same side of the input section. The first phase-shifting adjustment driven gear 33 and the second phase-shifting adjustment driven gear on the second phase-shifting gear assembly 40 connected to the first phase-shifting gear assembly 30 can simultaneously mesh with the phase-shifting racks 70 to realize the synchronous movement of the two phase-shifting racks 70, or they can not mesh at the same time, and the different phase-shifting racks 70 can move separately.

[0048] The locking mechanism 80 includes a locking buckle 81 sleeved on the phase-shifting rack 70, a locking gear 82 and a reset spring 83 disposed in the inner cavity of the locking buckle 81. The locking gear 82 is located above the phase-shifting rack 70 and meshes with the phase-shifting rack 70. The locking buckle 81 is provided with a groove 811 that can abut against the locking gear 82 to restrict the phase-shifting rack 70 from moving back and forth. The reset spring 83 is used to lift the locking buckle 81.

[0049] The top of the locking buckle 81 is provided with a protrusion 812. The first selective phase shift gear assembly 30 and the second selective phase shift gear assembly 40 are provided with an unlocking rod 90. The unlocking rod 90 can press the locking buckle 81 down against the protrusion 812, causing the locking gear 82 to disengage from the slot 811, so that the locking gear 82 can rotate, thereby allowing the phase shift rack 70 to move back and forth.

[0050] An antenna, including the aforementioned selective phase-shift linkage device.

[0051] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications and substitutions are included within the scope defined by the claims of this application.

Claims

1. A multi-frequency antenna selective phase shift linkage device, characterized in that, include: The positioning mechanism includes a positioning drive device (10), a positioning screw (20), a first positioning phase gear assembly (30), and a second positioning phase gear assembly (40) connected to the first positioning phase gear assembly (30). The positioning drive device (10) is used to drive the positioning screw (20) to rotate. The first positioning phase gear assembly (30) is connected to the positioning screw (20) so that the first positioning phase gear assembly (30) and the second positioning phase gear assembly (40) can move axially along the positioning screw (20). The phase shifting mechanism includes a phase shifting drive device (50), a phase shifting adjustment rod (60) arranged parallel to the selection screw (20), and a plurality of phase shifting racks (70) arranged perpendicular to the phase shifting adjustment rod (60). The phase shifting adjustment rod (60) is connected to a first selection phase shifting gear assembly (30) and a second selection phase shifting gear assembly (40). The phase shifting drive device (50) is used to drive the phase shifting adjustment rod (60) to rotate, and can drive the phase shifting racks (70) to move back and forth when the first selection phase shifting gear assembly (30) and the second selection phase shifting gear assembly (40) mesh with the phase shifting racks (70). The phase shifting racks (70) are connected one-to-one with the phase shifters to realize the phase shifting motion of the phase shifters. The phase-shifting rack (70) has at least two racks, and a locking mechanism (80) is provided on the phase-shifting rack (70). The locking mechanism (80) includes a locking buckle (81) sleeved on the phase-shifting rack (70), a locking gear (82) and a reset spring (83) provided in the inner cavity of the locking buckle (81). The locking gear (82) is located above the phase-shifting rack (70) and meshes with the phase-shifting rack (70). The locking buckle (81) is provided with a slot (811) that can abut against the locking gear (82) to restrict the phase-shifting rack (70) from moving back and forth. The reset spring (83) is used to lift the locking buckle (81). The top of the locking buckle (81) is provided with a protrusion (812). The first selective phase shift gear assembly (30) and the second selective phase shift gear assembly (40) are provided with an unlocking rod (90). The unlocking rod (90) can press the locking buckle (81) down against the protrusion (812), causing the locking gear (82) to disengage from the slot (811), so that the locking gear (82) can rotate, thereby allowing the phase shift rack (70) to move back and forth.

2. The multi-frequency antenna selective phase shift linkage device according to claim 1, characterized in that: The positioning drive device (10) includes a positioning input sleeve (11), a positioning input drive bevel gear (12), and a positioning input driven bevel gear (13). The positioning input driven bevel gear (13) is connected to the positioning screw (20). The positioning input drive bevel gear (12) is connected to the positioning input sleeve (11) and meshes with the positioning input driven bevel gear (13). The positioning input sleeve (11) is driven to rotate by a corresponding motor, and the positioning screw (20) is driven to rotate by the positioning input drive bevel gear (12) and the positioning input driven bevel gear (13).

3. The multi-frequency antenna selective phase shift linkage device according to claim 1, characterized in that: The first phase-shifting gear assembly (30) includes a first gearbox (31) and a first phase-shifting adjustment drive gear (32) and a first phase-shifting adjustment driven gear (33) disposed in the first gearbox (31). The first gearbox (31) is provided with an internal thread hole (34) that is threadedly connected to the selection screw (20). The first phase-shifting adjustment drive gear (32) is connected to the phase-shifting adjustment rod (60) and meshes with the first phase-shifting adjustment driven gear (33). The first phase-shifting adjustment driven gear (33) can mesh with the phase-shifting rack (70). The second phase-shifting gear assembly (40) includes a second gearbox (41) and a second phase-shifting adjustment drive gear and a second phase-shifting adjustment driven gear disposed in the second gearbox (41). The second gearbox (41) is placed on the guide rod (42) and connected to the first gearbox (31) through the connecting rod (43). The second phase-shifting adjustment drive gear is connected to the phase-shifting adjustment rod (60) and meshes with the second phase-shifting adjustment driven gear. The second phase-shifting adjustment driven gear can mesh with the phase-shifting rack (70).

4. The multi-frequency antenna selective phase shift linkage device according to claim 3, characterized in that: The first phase-shifting adjustment drive gear (32) is sleeved on the phase-shifting adjustment rod (60) and can slide around the phase-shifting adjustment rod (60) and rotate synchronously with the phase-shifting adjustment rod (60); the second phase-shifting adjustment drive gear is sleeved on the phase-shifting adjustment rod (60) and can slide around the phase-shifting adjustment rod (60) and rotate synchronously with the phase-shifting adjustment rod (60).

5. A multi-frequency antenna selective phase-shift linkage device according to claim 3, characterized in that: The first gearbox (31) is provided with a first rotating shaft (311), the internal thread hole (34) is opened in the first rotating shaft (311), and the first phase shift adjustment driven gear (33) is sleeved on the first rotating shaft (311); the second gearbox (41) is provided with a second rotating shaft, the second rotating shaft has a through hole (411), the guide rod (42) passes through the through hole (411), and the second phase shift adjustment driven gear is sleeved on the second rotating shaft.

6. The multi-frequency antenna selective phase-shift linkage device according to claim 1, characterized in that: The phase-shifting drive device (50) includes a phase-shifting input shaft sleeve (51), a phase-shifting input driving bevel gear (52), and a phase-shifting input driven bevel gear (53). The phase-shifting input driven bevel gear (53) is connected to the phase-shifting adjustment rod (60). The phase-shifting input driving bevel gear (52) is connected to the phase-shifting input shaft sleeve (51) and meshes with the phase-shifting input driven bevel gear (53). The phase-shifting input shaft sleeve (51) is driven to rotate by a corresponding motor, and the phase-shifting adjustment rod (60) is driven to rotate by the phase-shifting input driving bevel gear (52) and the phase-shifting input driven bevel gear (53).

7. An antenna, characterized in that: Includes the selective phase-linkage device as described in any one of claims 1-6.

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