Frequency selection and phase shift device, and multi-frequency antenna

Abstract

The present application relates to a frequency selection and phase shift device, and a multi-frequency antenna. The frequency selection and phase shift device comprises a plurality of phase shift components (10), a frequency selection mechanism (20), and a phase shift mechanism (30). Each phase shift component (10) is used for being connected to each phase shifter to adjust the phase of the phase shifter. The frequency selection mechanism (20) comprises a linkage member (21), a first transmission gear (22), and one or more frequency selection and phase shift gears (23) rotatably arranged on the linkage member (21). The linkage member (21) is provided with a first thread (2111), and the outer wall of the first transmission gear (22) is provided with a second thread (221) engaged with the first thread (2111). The phase shift mechanism (30) comprises a transmission shaft (31) and a second transmission gear (32). The transmission shaft (31) is rotatably arranged in a clearance through hole, the second transmission gear (32) and the frequency selection and phase shift gear (23) are both sleeved on the transmission shaft (31), and the second transmission gear (32) is driven by an external torque to drive the transmission shaft (31) to synchronously rotate.

Description

Frequency-selective phase-shifting device and multi-frequency antenna Technical Field

[0001] The present application relates to the field of mobile communication technology, and in particular to a frequency selection and phase shifting device and a multi-frequency antenna. Background Art

[0002] With the continuous increase in the number of mobile communication terminal users and the popularization of 5G, the demand for network capacity of sites in mobile cellular networks is increasing. At the same time, there is a requirement to minimize interference between different sites, and even between different sectors of the same site, in order to maximize network capacity and minimize interference. To achieve this goal, the downtilt angle of the antenna beam at the site is usually adjusted.

[0003] When the antenna is multi-band, mechanical downtilt is primarily used to adjust the beam downtilt angle. Specifically, the antenna typically has a built-in transmission mechanism that connects multiple phase shifters to the corresponding phase shift components in each frequency band of the multi-band antenna. The transmission mechanism selects one of the phase shifters through a frequency selector and drives the phase shifters through the phase shifter mechanism to perform the phase shifting operation.

[0004] However, the transmission device in the related art is complex in structure, requires multiple switching channels, and has low efficiency and reliability in frequency selection and phase shifting. Furthermore, the phase shifting and frequency selection mechanisms are designed separately, resulting in a low level of integration. This further results in a bulky transmission device and insufficient flatness, making it difficult to install in an antenna.

[0005] Summary of the Invention

[0006] According to various embodiments of the present application, the present application provides a frequency-selective phase-shifting device and a multi-frequency antenna.

[0007] A frequency-selective phase-shifting device, comprising:

[0008] A plurality of phase shifting components, each of the phase shifting components being arranged in sequence and spaced apart;

[0009] A frequency selection mechanism, comprising a linkage member, a first transmission gear, and one or more frequency selection and phase shifting gears rotatably disposed on the linkage member, wherein the linkage member is provided with a first thread, the first transmission gear is provided with an avoidance through-hole, and the outer wall of the first transmission gear is provided with a second thread that meshes with the first thread. The first transmission gear is subjected to an external torque to drive the linkage member to move, thereby driving one of the frequency selection and phase shifting gears to mesh with one of the phase shifting components; and

[0010] The phase shifting mechanism includes a transmission shaft and a second transmission gear. The transmission shaft is rotatably inserted into the avoidance through hole. The second transmission gear and the frequency-selective phase-shifting gear are both sleeved on the transmission shaft. The second transmission gear is driven by an external torque to drive the transmission shaft to rotate synchronously. The transmission shaft synchronously drives the frequency-selective phase-shifting gear to rotate, thereby driving the phase-shifting component meshing with the frequency-selective phase-shifting gear to implement phase shifting.

[0011] In one embodiment, the frequency-selective phase-shifting device further includes a bracket; each of the phase-shifting components is arranged on the bracket in sequence and at intervals along the axial direction of the transmission shaft, and each of the phase-shifting components moves relative to the bracket under the drive of the frequency-selective phase-shifting gear; the linkage is movably provided on the bracket along the axial direction of the transmission shaft; and the transmission shaft is rotatably provided on the bracket.

[0012] In one embodiment, the bracket is provided with a first guide portion, and the linkage member is provided with a second guide portion that slides with the first guide portion.

[0013] In one embodiment, a first limiting portion is provided on the bracket, and the first limiting portion abuts against an axial end surface of the first transmission gear to limit the first transmission gear from moving along the axial direction of the transmission shaft.

[0014] In one embodiment, a second limiting portion is provided on the bracket, and the second limiting portion abuts against an axial end surface of the second transmission gear to limit the second transmission gear from moving along the axial direction of the transmission shaft.

[0015] In one embodiment, the linkage member is provided with a support seat corresponding to the frequency-selective phase-shifting gear, and the frequency-selective phase-shifting gear is rotatably provided on the support seat.

[0016] In one embodiment, the number of the support bases is two, and the two support bases are respectively connected to opposite ends of the linkage member.

[0017] In one embodiment, the frequency selection and phase shifting device further includes a first transmission component, wherein the first transmission component is connected to the first transmission gear, and the first transmission component drives the first transmission gear to rotate under an external torque.

[0018] In one embodiment, the first transmission assembly includes a third transmission gear and a first drive shaft coaxially connected to the third transmission gear; the third transmission gear and the first transmission gear are meshed with each other, and the first drive shaft is used to receive external torque.

[0019] In one embodiment, the first transmission gear and the third transmission gear are each independently configured as a bevel gear.

[0020] In one embodiment, the frequency selection and phase shifting device further includes a second transmission assembly, wherein the second transmission assembly is connected to the second transmission gear, and the second transmission gear is driven to rotate by an external torque.

[0021] In one embodiment, the second transmission assembly includes a fourth transmission gear and a second drive shaft coaxially connected to the fourth transmission gear; the fourth transmission gear and the second transmission gear are meshed with each other, and the second drive shaft is used to receive external torque.

[0022] In one embodiment, the second transmission gear and the fourth transmission gear are each independently configured as a bevel gear.

[0023] In one embodiment, the linkage member is further provided with a stop portion located at the end of the first thread.

[0024] A multi-frequency antenna comprises a plurality of phase shifters corresponding to a plurality of frequency bands and the frequency-selective phase shifting device, wherein each of the phase shifters is correspondingly connected to each of the phase shifting components.

[0025] The details of one or more embodiments of the present application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the present application will become apparent from the description, drawings, and claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] FIG1 is a schematic structural diagram of a frequency-selective phase shifting device according to an embodiment of the present application.

[0027] FIG2 is a schematic diagram of the structure shown in FIG1 with some components hidden.

[0028] FIG3 is a decomposition diagram of the structure shown in FIG1 .

[0029] FIG4 is a schematic structural diagram of a frequency-selective phase shifting device according to another embodiment of the present application.

[0030] FIG5 is a schematic diagram of the structure of FIG4 with some components hidden.

[0031] 10. Phase-shifting component; 20. Frequency-selecting mechanism; 21. Linkage; 211. Sliding plate; 2111. First thread; 2112. Stopper; 212. Support seat; 22. First transmission gear; 221. Second thread; 23. Frequency-selecting phase-shifting gear; 30. Phase-shifting mechanism; 31. Transmission shaft; 32. Second transmission gear; 40. Bracket; 41. First limiting portion; 411. First notch; 42. Second limiting portion; 421. Second notch; 43. Mounting plate; 50. First transmission assembly; 51. Third transmission gear; 52. First drive shaft; 60. Second transmission assembly; 61. Fourth transmission gear; 62. Second drive shaft. DETAILED DESCRIPTION

[0032] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0033] Referring to Figures 1 to 3, Figure 1 shows a schematic structural diagram of a frequency-selective phase-shifting device according to an embodiment of the present application. Figure 2 shows a schematic structural diagram of the structure shown in Figure 1 with some components hidden. Figure 3 shows an exploded structural diagram of the structure shown in Figure 1. A frequency-selective phase-shifting device according to an embodiment of the present application comprises: a plurality of phase-shifting components 10, a frequency-selective mechanism 20, and a phase-shifting mechanism 30. The phase-shifting components 10 are arranged in sequence and spaced apart, and each phase-shifting component 10 is used to connect to a phase shifter to adjust the phase of the phase shifter. The frequency-selective mechanism 20 includes a linkage 21, a first transmission gear 22, and one or more frequency-selective phase-shifting gears 23 rotatably disposed on the linkage 21. The linkage 21 is provided with a first thread 2111, the first transmission gear 22 is provided with an avoidance through-hole, and the outer wall of the first transmission gear 22 is provided with a second thread 221 that meshes with the first thread 2111. The first transmission gear 22 is driven by an external torque to drive the linkage 21 to move, thereby driving one of the frequency-selective phase-shifting gears 23 to engage with one of the phase-shifting components 10, thereby achieving frequency selection operation. In addition, the phase-shifting mechanism 30 includes a transmission shaft 31 and a second transmission gear 32. The transmission shaft 31 is rotatably inserted into the avoidance through-hole, and the second transmission gear 32 and the frequency-selective phase-shifting gear 23 are both sleeved on the transmission shaft 31. The second transmission gear 32 is driven by an external torque to drive the transmission shaft 31 to rotate synchronously, and the transmission shaft 31 synchronously drives the frequency-selective phase-shifting gear 23 to rotate, thereby driving the phase-shifting component 10 meshing with the frequency-selective phase-shifting gear 23 to implement phase shifting.

[0034] When the above-mentioned frequency selection and phase shifting device is working, the first transmission gear 22 is driven by an external torque to drive the linkage member 21 to move along the axial direction of the transmission shaft 31, so as to drive the phase shifting gear to engage with one of the phase shifting components 10, thereby completing the frequency selection step. Then, the second transmission gear 32 is driven by an external torque to drive the transmission shaft 31 to rotate synchronously, and the transmission shaft 31 synchronously drives the frequency selection and phase shifting gear 23 to rotate, so as to drive the phase shifting component 10 engaged with the frequency selection and phase shifting gear 23 to perform phase shifting. Among them, on the one hand, the first transmission gear 22 is directly engaged with the first thread 2111 on the linkage 21 through the second thread 221 on its outer wall. When the first transmission gear 22 rotates under the action of external force, it will drive the linkage 21 that cannot rotate and the frequency selection and phase shifting gear 23 thereon to move axially to complete the frequency selection step. The transmission mode is a first-stage transmission, with high transmission efficiency, stability and reliability; on the other hand, the second transmission gear 32 is driven by the external torque to drive the transmission shaft 31 to rotate synchronously, and the transmission shaft 31 synchronously drives the frequency selection and phase shifting gear 23 to rotate. The transmission mode is a first-stage transmission, with high transmission efficiency, stability and reliability; in addition, the first transmission gear 22 is provided with an avoidance through hole, and the first transmission gear 22 is rotatably mounted on the transmission shaft 31 through the avoidance through hole. The second transmission gear 32 and the frequency selection and phase shifting gear 23 are both mounted on the transmission shaft 31. The first transmission gear 22 is directly connected to the linkage 21, so that the overall structure can be compact, the integration is improved, the volume size is reduced, and it can be easily installed in the antenna.

[0035] In addition, when there are multiple frequency-selective phase-shifting gears 23, the multiple frequency-selective phase-shifting gears 23 are sequentially spaced apart along the axial direction of the transmission shaft 31 on the linkage member 21. In this way, the linkage member 21 can achieve mutual engagement between the phase-shifting component 10 at a predetermined position and the frequency-selective phase-shifting gear 23 closest to it with a relatively small axial movement stroke, thereby improving working efficiency.

[0036] In addition, the frequency selection mechanism 20 is used to select the phase shift component 10 corresponding to one of the frequency bands, and the phase shift mechanism 30 is used to move the selected phase shift component 10 to implement phase shifting. The frequency selection mechanism 20 and the phase shift mechanism 30 operate independently of each other and do not interfere with each other, so as to improve the operating efficiency of the frequency selection and phase shifting device.

[0037] In some embodiments, the phase-shifting components 10 are sequentially spaced apart along the axial direction of the transmission shaft 31 (as indicated by the double-headed arrow S in FIG. 1 , FIG. 2 , or FIG. 4 ). Thus, when the first transmission gear 22 is subjected to an external torque, driving the linkage member 21 to move along the axial direction of the transmission shaft 31, the phase-shifting gear 22 can be driven to a position corresponding to any phase-shifting component 10 and mesh with the corresponding phase-shifting component 10, thereby enabling phase shifting operations for various frequency bands of each phase-shifting component 10 as required.

[0038] Referring to Figures 1 to 5 , Figures 4 and 5 illustrate schematic diagrams of the structure of a frequency-selective phase-shifting device according to another embodiment of the present application. In some embodiments, each phase-shifting component 10 can be arranged on one side of the transmission shaft 31, as shown in the structures of Figures 1 to 3 , or multiple phase-shifting components 10 can be arranged at intervals on opposite sides of the transmission shaft 31, as shown in the structures of Figures 4 and 5 . Referring to Figures 1 and 2 , when multiple phase-shifting components 10 are arranged at intervals on one side of the rotating shaft, the phase-shifting components 10 can be arranged sequentially at equal intervals or at unequal intervals. Furthermore, referring to Figures 4 and 5 , when multiple phase-shifting components 10 are arranged at intervals on each side of the rotating shaft, the phase-shifting components 10 arranged on one side of the rotating shaft are offset from the phase-shifting components 10 arranged on the other side. This allows the frequency-selective phase-shifting gear 23 to engage with only one of the phase-shifting components 10 when moved to any position, performing a phase shifting operation on the engaged phase-shifting component 10. Compared with the arrangement in which each phase shifting component 10 is arranged on one side of the transmission shaft 31, the arrangement in which each phase shifting component 10 is arranged on two opposite sides of the transmission shaft 31 in this embodiment can improve the integration, make the arrangement compact, and reduce the overall volume size.

[0039] As a specific example, the frequency-selective phase-shifting gears 23 are alternately arranged on opposite sides of the transmission shaft 31 in any ratio such as 1:1, 1:2, 1:3, 2:1, or 3:1.

[0040] Of course, as some optional solutions, when one or more phase-shifting components 10 arranged on one side of the rotating shaft are aligned with one or more phase-shifting components 10 arranged on the other side, the frequency-selective phase-shifting gear 23 will simultaneously engage with the two phase-shifting components 10 on the opposite sides of the transmission shaft 31 and perform phase-shifting operations on the two engaged phase-shifting components 10 synchronously.

[0041] In some embodiments, the axial cross-section of the transmission shaft 31 is not circular, but rather non-circular, including but not limited to regular shapes such as elliptical, semi-elliptical, semi-circular, polygonal, or cross-shaped, or other irregular shapes. Furthermore, the cross-sectional shape of the shaft holes of the second transmission gear 32 and the frequency-selective phase-shifting gear 23 is adapted to the axial cross-sectional shape of the transmission shaft 31. This allows the second transmission gear 32, the transmission shaft 31, and the frequency-selective phase-shifting gear 23 to rotate synchronously, and further allows the frequency-selective phase-shifting gear 23 to move along the transmission shaft 31 under the drive of the linkage 21.

[0042] Referring to Figures 1 to 3 , in one embodiment, the frequency-selective phase shifting device further includes a bracket 40. The phase-shifting components 10 are sequentially and spaced apart on the bracket 40 along the axial direction of the transmission shaft 31 (as indicated by the double arrow S in Figures 1 or 2 ). Each phase-shifting component 10 is meshed with the frequency-selective phase-shifting gear 23 and can move relative to the bracket 40 under the drive of the frequency-selective phase-shifting gear 23. Furthermore, the linkage 21 is movably disposed on the bracket 40 along the axial direction of the transmission shaft 31. The transmission shaft 31 is rotatably disposed on the bracket 40. In this manner, the phase-shifting components 10, the linkage 21, and the transmission shaft 31 can be assembled together via the bracket 40.

[0043] Referring to Figures 1 to 3 , in one embodiment, the bracket 40 is provided with a first guide portion, and the linkage member 21 is provided with a second guide portion that slidably engages with the first guide portion. Thus, the first transmission gear 22 rotates in response to an external torque, driving the first thread 2111 via the second thread 221. The interaction between the first and second guide portions guides the linkage member 21 along the axial direction of the transmission shaft 31, resulting in smooth and reliable operation.

[0044] Among them, the first guide part includes but is not limited to being set as a slide groove, guide rail, guide rod, guide sleeve, etc., and the second guide part is set to adapt to the first guide part, including but not limited to being set as a slide rail, slide groove, guide sleeve, guide rod, etc.

[0045] Specifically, the linkage member 21 is provided with a sliding plate 211, and the first thread 2111 is provided on the side of the sliding plate 211 facing the first transmission gear 22. In addition, the first guide portion is provided on the side of the sliding plate facing away from the first transmission gear 22.

[0046] Referring to Figures 1 to 3 , in some embodiments, the sliding plate 211 is provided with an arcuate concave surface adapted to the outer wall of the first transmission gear 22. The first thread 2111 is formed on the arcuate concave surface, thereby enabling the first thread 2111 and the second thread 221 to engage with each other, ensuring stable operation. The curvature of the arcuate concave surface includes, but is not limited to, 10°, 15°, 30°, or 45°, and the specific angle can be flexibly adjusted and set according to actual needs.

[0047] Referring to Figures 1 to 3, in one embodiment, a first limiting portion 41 is provided on the bracket 40. The first limiting portion 41 abuts against the axial end surface of the first transmission gear 22 to limit the axial movement of the first transmission gear 22 along the transmission shaft 31. Thus, when the first transmission gear 22 is rotated by an external torque, the abutment between the axial end surface of the first transmission gear 22 and the first limiting portion 41 prevents the first transmission gear 22 from moving axially along the transmission shaft 31, thereby enabling the drive linkage 21 to operate stably along the axial direction of the transmission shaft 31. Furthermore, due to the axial limiting of the first transmission gear 22, the first transmission gear 22 can always mesh with the third transmission gear 51.

[0048] In some embodiments, two first limiting portions 41 are provided, and the two first limiting portions 41 respectively abut against two oppositely disposed axial end surfaces of the first transmission shaft 31 .

[0049] Referring to Figures 1 to 3 , the first stopper 41 is provided with a first notch 411 for circumventing the linkage member 21. The linkage member 21 is movably inserted into the first notch 411 along its axial direction. The first notch 411 is correspondingly positioned to the sliding plate 211, so that the first stopper 41 guides the linkage member 21 when the sliding plate 211 moves along the axial direction of the transmission shaft 31.

[0050] Referring to Figures 1 to 3, in one embodiment, the bracket 40 is provided with a second stopper 42. The second stopper 42 abuts against the axial end surface of the second transmission gear 32 to limit the axial movement of the second transmission gear 32 along the transmission shaft 31. Thus, when the second transmission gear 32 is rotated by an external torque, the abutment between the axial end surface of the second transmission gear 32 and the second stopper 42 prevents the second transmission gear 32 from moving axially along the transmission shaft 31, thereby driving the transmission shaft 31 to rotate. Furthermore, the axial limit of the second transmission gear 32 allows the second transmission gear 32 to always mesh with the fourth transmission gear 61.

[0051] Specifically, the second stopper 42 is provided with a second notch 421 for circumventing the linkage member 21. The linkage member 21 is movably inserted into the second notch 421 along its axial direction. The second notch 421 is correspondingly positioned to the sliding plate 211. Thus, when the sliding plate 211 moves along the axial direction of the transmission shaft 31, the second stopper 42 guides the linkage member 21.

[0052] Please refer to Figures 1 to 3. In one embodiment, a support seat 212 is provided on the linkage 21, which is arranged corresponding to the frequency selection phase shift gear 23. The frequency selection phase shift gear 23 is rotatably arranged on the support seat 212. In this way, on the one hand, when the linkage 21 moves along the axial direction of the transmission shaft 31 to adjust its position, it will synchronously drive the frequency selection phase shift gear 23 to move along the axial direction of the transmission shaft 31 through the support seat 212 to adjust its position, thereby achieving mutual engagement with one of the phase shift components 10, thereby completing frequency selection; on the other hand, since the frequency selection phase shift gear 23 can rotate on the support seat 212, when performing the phase shift operation, the frequency selection phase shift gear 23 can be driven to rotate by the transmission shaft 31 without being affected by the interference of the linkage 21.

[0053] Referring to FIG. 1 to FIG. 3 , in one embodiment, two support bases 212 are provided, and the two support bases 212 are respectively connected to opposite ends of the linkage member 21 .

[0054] Specifically, the two support bases 212 are respectively connected to two opposite ends of the sliding plate 211 .

[0055] 4 and 5 , in one embodiment, the frequency selective phase shifting device further includes a first transmission assembly 50. The first transmission assembly 50 is connected to the first transmission gear 22, and the first transmission assembly 50 drives the first transmission gear 22 to rotate under external torque.

[0056] Referring to Figures 4 and 5 , in one embodiment, the first transmission assembly 50 includes a third transmission gear 51 and a first drive shaft 52 coaxially connected to the third transmission gear 51. The third transmission gear 51 meshes with the first transmission gear 22, and the first drive shaft 52 is configured to receive external torque. Specifically, the first drive shaft 52 is connected to the rotating shaft of the first motor and is driven to rotate by the rotating shaft of the first motor. Thus, the first drive shaft 52 sequentially drives the third drive gear and the first transmission gear 22 to rotate, thereby causing the linkage 21 to move axially along the transmission shaft 31, thereby driving one of the frequency selection and phase shifting gears 23 to mesh with one of the phase shifting components 10, thereby implementing frequency selection.

[0057] Please refer to FIG. 4 and FIG. 5 . In one embodiment, the first transmission gear 22 and the third transmission gear 51 are each independently configured as a bevel gear.

[0058] 4 and 5 , in one embodiment, the frequency selective phase shifting device further includes a second transmission assembly 60. The second transmission assembly 60 is connected to the second transmission gear 32, and the second transmission assembly 60 drives the second transmission gear 32 to rotate under external torque.

[0059] Referring to Figures 4 and 5 , in one embodiment, the second transmission assembly 60 includes a fourth transmission gear 61 and a second drive shaft 62 coaxially connected to the fourth transmission gear 61. Furthermore, the fourth transmission gear 61 meshes with the second transmission gear 32, and the second drive shaft 62 is configured to receive external torque. Specifically, the second drive shaft 62 is connected to the rotating shaft of the second motor and is driven to rotate by the rotating shaft of the second motor. Thus, the second drive shaft 62 sequentially drives the fourth drive gear, the second transmission gear 32, the transmission shaft 31, and the frequency-selective phase-shifting gear 23 to rotate, thereby causing the frequency-selective phase-shifting gear 23 to drive the meshed phase-shifting component 10 to move, thereby implementing phase shifting.

[0060] In one embodiment, the second transmission gear 32 and the fourth transmission gear 61 are each independently configured as a bevel gear.

[0061] 1 to 3 , in one embodiment, the linkage member 21 is further provided with a stopper 2112 at the end of the first thread 2111. Thus, when the first transmission gear 22 rotates until it contacts the stopper 2112, the first transmission gear 22 cannot rotate further, i.e., it reaches its limit position, thus serving as a positioning function.

[0062] Please refer to Figures 1 to 3. In one embodiment, a multi-frequency antenna includes multiple phase shifters (not shown in the figures) corresponding to multiple frequency bands, and also includes a frequency selection phase shifting device of any of the above embodiments, and each phase shifter is connected to each phase shift component 10 accordingly.

[0063] When the multi-frequency antenna described above is in operation, the first transmission gear 22 is subjected to an external torque to drive the linkage member 21 to move along the axial direction of the transmission shaft 31, so as to drive the phase shift gear to engage with one of the phase shift components 10, thereby completing the frequency selection step. Then, the second transmission gear 32 is driven by the external torque to drive the transmission shaft 31 to rotate synchronously, and the transmission shaft 31 synchronously drives the frequency selection phase shift gear 23 to rotate, so as to drive the phase shift component 10 engaged with the frequency selection phase shift gear 23 to perform phase shifting. Among them, on the one hand, the first transmission gear 22 is directly engaged with the first thread 2111 on the linkage 21 through the second thread 221 on its outer wall. When the first transmission gear 22 rotates under the action of external force, it will drive the linkage 21 that cannot rotate and the frequency selection and phase shifting gear 23 thereon to move axially to complete the frequency selection step. The transmission mode is a first-stage transmission, with high transmission efficiency, stability and reliability; on the other hand, the second transmission gear 32 is driven by the external torque to drive the transmission shaft 31 to rotate synchronously, and the transmission shaft 31 synchronously drives the frequency selection and phase shifting gear 23 to rotate. The transmission mode is a first-stage transmission, with high transmission efficiency, stability and reliability; in addition, the first transmission gear 22 is provided with an avoidance through hole, and the first transmission gear 22 is rotatably mounted on the transmission shaft 31 through the avoidance through hole. The second transmission gear 32 and the frequency selection and phase shifting gear 23 are both mounted on the transmission shaft 31. The first transmission gear 22 is directly connected to the linkage 21, so that the overall structure can be compact, the integration is improved, the volume size is reduced, and it can be easily installed in the antenna.

[0064] It should be noted that the "first drive shaft 52" can be "a part of the third transmission gear 51", that is, the "first drive shaft 52" and the "other parts of the third transmission gear 51" are manufactured as one piece; it can also be an independent component that can be separated from the "other parts of the third transmission gear 51", that is, the "first drive shaft 52" can be manufactured independently and then combined with the "other parts of the third transmission gear 51" into a whole.

[0065] It should be noted that the "second drive shaft 62" can be "a part of the fourth transmission gear 61", that is, the "second drive shaft 62" and the "other parts of the fourth transmission gear 61" are manufactured as one piece; it can also be an independent component that can be separated from the "other parts of the fourth transmission gear 61", that is, the "second drive shaft 62" can be manufactured independently and then combined with the "other parts of the fourth transmission gear 61" into a whole.

[0066] 2 and 3 , in one embodiment, a mounting plate 43 is provided on the bracket 40. The mounting plate 43 defines a first mounting hole and a second mounting hole. The first drive shaft 52 is rotatably disposed in the first mounting hole, and the second drive shaft 62 is rotatably disposed in the second mounting hole.

[0067] It should be noted that the "stop portion 2112" can be "a part of the sliding plate 211", that is, the "stop portion 2112" and the "other parts of the sliding plate 211" are manufactured as one piece; it can also be an independent component that can be separated from the "other parts of the sliding plate 211", that is, the "stop portion 2112" can be manufactured independently and then combined with the "other parts of the sliding plate 211" into a whole.

[0068] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0069] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0070] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0071] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0072] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0073] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A frequency-selective phase-shifting device, the frequency-selective phase-shifting device comprising: a plurality of phase-shifting components, each of the phase-shifting components being arranged at intervals in sequence; a frequency-selecting mechanism, the frequency-selecting mechanism comprising a linkage, a first transmission gear, and one or more frequency-selective phase-shifting gears rotatably arranged on the linkage, a first thread being provided on the linkage, an avoidance through-hole being provided on the first transmission gear, a second thread meshing with the first thread being provided on the outer wall of the first transmission gear, the first transmission gear being driven by an external torque to drive the linkage to move, so as to drive one of the frequency-selective phase-shifting gears to mesh with one of the phase-shifting components; and a phase-shifting mechanism, the phase-shifting mechanism comprising a transmission shaft and a second transmission gear, the transmission shaft being rotatably disposed through the avoidance through-hole, the second transmission gear and the frequency-selective phase-shifting gear both being sleeved on the transmission shaft, the second transmission gear being driven by an external torque to drive the transmission shaft to rotate synchronously, the transmission shaft synchronously driving the frequency-selective phase-shifting gear to rotate, so as to drive the phase-shifting component meshing with the frequency-selective phase-shifting gear to perform phase shifting.

2. The frequency-selective phase-shifting device according to claim 1, wherein, The frequency-selective phase-shifting device further comprises a bracket; each of the phase-shifting components is arranged at intervals along the axial direction of the transmission shaft on the bracket, and each of the phase-shifting components moves relative to the bracket under the drive of the frequency-selective phase-shifting gear; the linkage is movably arranged on the bracket along the axial direction of the transmission shaft; the transmission shaft is rotatably arranged on the bracket.

3. The frequency-selective phase-shifting device according to claim 2, wherein, A first guiding portion is provided on the bracket, and a second guiding portion slidably cooperating with the first guiding portion is provided on the linkage.

4. The frequency-selective phase-shifting device according to claim 2, wherein, A first limiting portion is provided on the bracket, and the first limiting portion abuts against the axial end face of the first transmission gear to limit the first transmission gear from moving along the axial direction of the transmission shaft.

5. The frequency-selective phase-shifting device according to claim 2, wherein, A second limiting portion is provided on the bracket, and the second limiting portion abuts against the axial end face of the second transmission gear to limit the second transmission gear from moving along the axial direction of the transmission shaft.

6. The frequency-selective phase-shifting device according to claim 1, wherein, A supporting seat corresponding to the frequency-selective phase-shifting gear is provided on the linkage, and the frequency-selective phase-shifting gear is rotatably arranged on the supporting seat.

7. The frequency-selective phase-shifting device according to claim 6, wherein, The supporting seats are provided in two, and the two supporting seats are respectively connected to opposite ends of the linkage.

8. The frequency-selective phase-shifting device according to claim 1, wherein, The frequency-selective phase-shifting device further comprises a first transmission assembly, the first transmission assembly being connected to the first transmission gear, and the first transmission assembly being driven by an external torque to drive the first transmission gear to rotate.

9. The frequency-selective phase-shifting device according to claim 8, wherein, The first transmission assembly comprises a third transmission gear and a first drive shaft coaxially connected to the third transmission gear; the third transmission gear meshes with the first transmission gear, and the first drive shaft is used for receiving an external torque.

10. The frequency-selective phase-shifting device according to claim 9, wherein, The first transmission gear and the third transmission gear are each independently provided as bevel gears.

11. The frequency-selective phase-shifting device according to claim 1, wherein, The frequency-selective phase-shifting device further comprises a second transmission assembly, the second transmission assembly being connected to the second transmission gear, and the second transmission assembly being driven by an external torque to drive the second transmission gear to rotate.

12. The frequency-selective phase-shifting device according to claim 11, wherein, The second transmission component includes a fourth transmission gear and a second drive shaft coaxially connected to the fourth transmission gear; the fourth transmission gear meshes with the second transmission gear, and the second drive shaft is used to receive an external torque.

13. The frequency-selective phase-shifting device according to claim 12, wherein, The second transmission gear and the fourth transmission gear are each independently provided as bevel gears.

14. The frequency-selective phase-shifting device according to any one of claims 1 to 13, wherein, The linkage member is further provided with a stop portion located at the first threaded end.

15. A multi-frequency antenna, the multi-frequency antenna includes a plurality of phase shifters corresponding to a plurality of frequency bands, and further includes a frequency selection phase shifting device according to any one of claims 1 to 14, and each of the phase shifters is correspondingly connected to each of the phase shifting components.

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