WO2023174033A1

WO2023174033A1 - Electrical tilt antenna driving device and electrical tilt antenna

Info

Publication number: WO2023174033A1
Application number: PCT/CN2023/078181
Authority: WO
Inventors: 牛魁; 张昊; 孙磊; 沈楠; 刘涛
Original assignee: 中兴通讯股份有限公司
Priority date: 2022-03-15
Filing date: 2023-02-24
Publication date: 2023-09-21
Also published as: CN216903352U

Abstract

The present application relates to the technical field of mobile communications, and discloses an electrical tilt antenna driving device and an electrical tilt antenna. The electrical tilt antenna driving device comprises a motor, an electrical tilt control module, a forward transmission line and a reverse transmission line; the electrical tilt control module is configured to control action of the motor; the forward transmission line comprises a first one-way motion mechanism and a first reciprocating motion mechanism, and when the motor rotates forward, the first one-way motion mechanism can drive the first reciprocating motion mechanism to move so as to drive a first phase shifter to perform reciprocating phase modulation; the reverse transmission line comprises a second one-way motion mechanism and a second reciprocating motion mechanism, and when the motor rotates reversely, the second one-way motion mechanism can drive the second reciprocating motion mechanism to move so as to drive a second phase shifter to perform reciprocating phase modulation.

Description

Electrically adjustable antenna driving device and electrically adjustable antenna

Technical field

The present application relates to the field of mobile communication technology, for example, to an electrically adjustable antenna driving device and an electrically adjustable antenna.

Background technique

The signal coverage area in mobile communications is achieved by installing a base station antenna at the base station and allowing the base station antenna's beam to cover this area. When the geographical characteristics and user distribution of this area change, the beam radiation direction of the base station antenna needs to be adjusted so that the signal re-covers the changed area.

In order to adjust the beam radiation direction of the base station antenna, the phase shifter inside the base station antenna can be adjusted to change the signal phases of multiple units inside the antenna, thereby changing the direction of the beam. Therefore, the base station electrically adjustable antenna system plays an important role in the mobile communication network. As a key component to realize the electrically adjustable function of the antenna, the phase shifter is a key research object of electrically adjustable antennas. The radiation angle of the mobile communication antenna is driven by the transmission device to drive the phase shifter in the antenna, thereby adjusting the signal phase.

With the development of 5G technology, 5G antennas have the characteristics of small size, compact space, and thin thickness. At the same time, with the continuous updating of needs and the continuous improvement of functions, although ordinary dual motor control modules can meet the needs of two phase shifters alone, However, due to the introduction of two motors, the structure is complicated and the cost is increased.

Contents of the invention

This application provides an electrically adjustable antenna driving device and an electrically adjustable antenna with a more compact structure, high space utilization, and low cost to solve the problems of tight space layout and high cost caused by the existing two motor drives.

An electrically adjustable antenna driving device, including a motor, an electrically controlled control module, a forward transmission line and a reverse transmission line; the electrically controlled control module is configured to control the action of the motor; the forward transmission line includes a first unit a directional motion mechanism and a first reciprocating motion mechanism, the motor is transmission connected to the first one-way motion mechanism through a first transmission mechanism, the first one-way motion mechanism is connected to the first reciprocating motion mechanism; When the motor rotates forward, the first one-way motion mechanism can drive the first reciprocating motion mechanism to drive the first phase shifter to reciprocate phase adjustment; the reverse transmission line includes a second one-way motion mechanism and a third Two reciprocating motion mechanisms, the motor is transmission connected to the second one-way motion mechanism through a second transmission mechanism, and the second one-way motion mechanism is connected to the second reciprocating motion mechanism; when the motor is reversed, The second one-way motion mechanism can drive the second reciprocating motion mechanism to drive the second moving mechanism. The phase device reciprocates to adjust the phase.

As an optional solution of the electrically adjustable antenna driving device, the electrically adjustable control module includes an electrically adjustable plate, a first position sensor and a second position sensor. The electrically adjusted plate is connected to the motor; the first position The sensor is connected to the electric control board and is configured to identify the initial position of the first phase shifter; the second position sensor is connected to the electric control board and is configured to identify the initial position of the second phase shifter. .

As an optional solution of the electrically adjustable antenna driving device, at least one of the first position sensor and the second position sensor is an optocoupler sensor.

As an alternative to the electrically adjustable antenna driving device, the first transmission mechanism is a worm gear mechanism or a worm helical gear mechanism; the second transmission mechanism is a worm gear mechanism or a worm helical gear mechanism.

As an optional solution of the electrically adjustable antenna driving device, the first transmission mechanism includes a worm and a first helical gear, the second transmission mechanism includes the worm and a second helical gear, and the worm is connected with the motor. The output end is connected, and the first helical gear and the second helical gear are meshed and driven with the worm respectively; when the worm rotates, it can drive the first helical gear and the second helical gear to rotate in the opposite direction synchronously. .

As an alternative to the electrically adjustable antenna driving device, the first one-way motion mechanism is a one-way bearing or a ratchet mechanism; the second one-way motion mechanism is a one-way bearing or a ratchet mechanism.

As an alternative to the electrically adjustable antenna driving device, the first reciprocating mechanism is an incomplete rack and pinion reciprocating mechanism or a reciprocating screw mechanism; the second reciprocating mechanism is an incomplete rack and pinion reciprocating mechanism or a reciprocating screw mechanism. Reciprocating screw mechanism.

As an alternative to the electrically adjustable antenna driving device, the first reciprocating mechanism includes a first incomplete gear and a first support frame, and opposite first racks and first support frames are provided on both sides of the first support frame. The second rack, the first incomplete gear alternately meshes with the first rack and the second rack during rotation to drive the first support frame to reciprocate. The first support frame Set to be fixedly connected to the first phase shifter; the second reciprocating mechanism includes a second incomplete gear and a second support frame, and opposite third racks and racks are provided on both sides of the second support frame. The fourth rack, the second incomplete gear alternately meshes with the third rack and the fourth rack during rotation to drive the second support frame to reciprocate. The second support frame is configured to be fixedly connected to the second phase shifter.

As an optional solution of the electrically adjustable antenna driving device, a first shielding arm extends from the end of the first support frame. When the first phase shifter moves to the initial position, the first The shielding arm can trigger the action of the first position sensor; a second shielding arm extends from the end of the second support frame. When the second phase shifter moves to the initial position, the second shielding arm can Trigger the second position sensor to act.

An electrically adjustable antenna includes a first phase shifter, a second phase shifter and the electrically adjustable antenna driving device described in any of the above solutions.

Description of the drawings

Figure 1 shows a schematic structural diagram of the electrically adjustable antenna driving device in the embodiment of the present application (both the forward transmission line and the reverse transmission line are in an exploded state);

Figure 2 shows the second structural schematic diagram of the electrically adjustable antenna driving device in the embodiment of the present application (both the forward transmission line and the reverse transmission line are in an assembled state);

Figure 3 shows a schematic assembly diagram of the electrically adjustable antenna driving device, the first phase shifter rod and the second phase shifter rod in the embodiment of the present application;

Figure 4 shows a schematic structural diagram of an electrically adjustable antenna in an embodiment of the present application.

The figures in the figure are marked as follows:
1. Forward transmission line; 11. First support frame; 111. First blocking arm; 112. First rack;
113. The second rack; 12. The first incomplete gear; 13. The first one-way motion mechanism; 14. The first helical gear; 15. Worm; 16. The first reciprocating motion mechanism; 17. The first transmission mechanism;
2. Reverse transmission line; 21. Second support frame; 211. Second blocking arm; 212. Third rack;
213. The fourth rack; 22. The second incomplete gear; 23. The second one-way motion mechanism; 24. The second helical gear; 25. The second reciprocating motion mechanism; 26. The second transmission mechanism;
3. Motor;
4. ESC control module; 41. First position sensor; 42. Second position sensor; 43. ESC board;
51. The first phase shifter pull rod; 52. The second phase shifter pull rod;
61. The first phase shifter; 62. The second phase shifter.

Detailed ways

The present application will be described below in conjunction with the drawings and embodiments. It can be understood that the embodiments described here are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for convenience of description, only the structures related to the present application are shown in the drawings.

In the description of this application, unless otherwise explicitly stipulated and limited, the terms "connected", "connected" and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body. ; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two elements or an interaction between two elements. For those of ordinary skill in the art, the meanings of the above terms in this application can be understood according to the circumstances.

In this application, unless otherwise expressly stated and limited, the first feature is "on" the second feature. Or "under" may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Furthermore, the terms “above”, “above” and “above” a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the level of the first feature is higher than that of the second feature. Horizontal height. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the horizontal height of the first feature is less than the horizontal height of the second feature.

In the description of this application, the terms "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplified operation. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as a limitation on the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and have no special meaning.

With the development of antenna technology, electrically adjustable antennas will become an inevitable trend in future antennas. As an important part of the electrically adjustable antenna system, the antenna driving device plays a vital role in realizing multi-channel downtilt angle adjustment. Therefore, this application aims at the problem of the complex structure of the current antenna electrical adjustment system, and studies the implementation of independent phase adjustment by a single motor driving a dual-channel phase shifter, with a view to providing reference for future engineering implementation.

As shown in Figures 1 and 2, embodiments of the present application provide an electrically adjustable antenna driving device, which is used in electrically adjustable antennas and can realize independent driving of two phase shifters through one motor. The electrically adjustable antenna driving device includes a motor 3, an electrically adjustable control module 4, a forward transmission line 1 and a reverse transmission line 2. The ESC control module 4 is connected to the motor 3 and is configured to control the movement of the motor 3 . The forward transmission line 1 is used to drive the first phase shifter 61 through forward rotation of the motor 3 . The forward transmission line 1 includes a first one-way motion mechanism 13 and a first reciprocating motion mechanism 16. The motor 3 is transmission connected to the first one-way motion mechanism 13 through a first transmission mechanism 17. The first one-way motion mechanism 13 is connected to the first one-way motion mechanism 13. The reciprocating mechanism 16 is connected. When the motor 3 rotates forward, the motor 3 drives the first one-way motion mechanism 13 to move through the first transmission mechanism 17. The first one-way motion mechanism 13 transmits the power to the first reciprocating motion mechanism 16. When the first reciprocating motion mechanism 16 The first phase shifter 61 is driven to reciprocally modulate the phase. The reverse transmission line 2 is used to drive the second phase shifter 62 through reverse rotation of the motor 3 . The reverse transmission line 2 includes a second one-way motion mechanism 23 and a second reciprocating motion mechanism 25. The motor 3 is transmission connected to the second one-way motion mechanism 23 through the second transmission mechanism 26. The second one-way motion mechanism 23 is connected to the second one-way motion mechanism 23. The reciprocating mechanism 25 is connected. When the motor 3 reverses, the motor 3 drives the second one-way motion mechanism 23 to move through the second transmission mechanism 26. The second one-way motion mechanism 23 transmits the power to the second reciprocating motion mechanism 25. When the second reciprocating motion mechanism 25 The second phase shifter 62 is driven to reciprocally modulate the phase.

In this embodiment, the one-way motion mechanism can only realize transmission in one direction. For example, when the one-way motion mechanism rotates in the clockwise direction, it can drive the reciprocating motion mechanism, but when the one-way motion mechanism rotates in the counterclockwise direction, it cannot drive the reciprocating motion mechanism. Reciprocating mechanism movement. The one-way motion mechanism can be a one-way bearing or a ratchet mechanism or other mechanism with the same one-way motion transmission function. Optionally, the first one-way motion mechanism 13 of this embodiment is a first one-way bearing, the outer ring of the first one-way bearing is rigidly connected to the first transmission mechanism 17, and the inner ring of the first one-way bearing is rigidly connected to the first transmission mechanism 17. The reciprocating motion mechanism 16 is rigidly connected; similarly, the second one-way motion mechanism 23 in this embodiment is a second one-way bearing, and the outer ring of the second one-way bearing is rigidly connected to the second transmission mechanism 26. The second one-way bearing The inner ring of the second reciprocating mechanism 25 is rigidly connected. One-way bearings have simple structure, small size and easy installation, which are helpful to save space and cost.

It should be noted that this embodiment uses a one-way motion mechanism to isolate the forward transmission line 1 and the reverse transmission line 2. When the motor 3 uses the one-way motion mechanism to drive one of the phase shifters to move, the other phase shifter The device remains stationary under its own resistance, and the movements of the two phase shifters are mutually exclusive and do not interfere with each other. This application uses one motor to drive two phase shifters for independent phase modulation, which reduces the number of motors, reduces the size and weight of the transmission mechanism, is conducive to the compact layout of the mechanism, and also significantly reduces the cost of the mechanism.

Optionally, both the first transmission mechanism 17 and the second transmission mechanism 26 in the embodiment of the present application can adopt a worm gear mechanism, in which the worm is connected to the output end of the motor 3, and the worm gear meshes with the worm for transmission. The worm gear mechanism has a compact structure and high transmission efficiency. Smooth and low noise. In a staggered shaft transmission system using a worm pair, the metal teeth can adopt the meshing form of "worm + worm gear"; however, if the material of the worm gear is changed to engineering plastics and manufactured by molding, the mold structure will be complex and problems will occur. There are technical problems such as the difficulty of molding and the difficulty in ensuring the accuracy of the worm gear. In order to avoid this problem, the plastic worm pair can adopt the meshing form of "worm + helical gear", and the helix angle of the worm is basically close to the bevel angle of the helical teeth. In this embodiment, the first transmission mechanism 17 includes a worm 15 and a first helical gear 14 , and the second transmission mechanism 26 includes the above-mentioned worm 15 and a second helical gear 24 . The worm 15 is connected to the output end of the motor 3 , and the first helical gear 14 The first helical gear 14 and the second helical gear 24 are respectively meshed with the worm 15 for transmission; when the worm 15 rotates, it can drive the first helical gear 14 and the second helical gear 24 to rotate in opposite directions synchronously. Of course, in other embodiments, the first transmission mechanism 17 and the second transmission mechanism 26 can also use a gear set or other forms to realize motion transmission, for example, the first gear is provided to be transmission connected with the output shaft of the motor 3, and the second gear is connected to the output shaft of the motor 3. The three gears are meshed with the first gear for transmission respectively, and the first gear drives the second gear and the third gear to rotate.

The first reciprocating mechanism 16 and the second reciprocating mechanism 25 in the embodiment of the present application can be an incomplete rack and pinion reciprocating mechanism, a reciprocating screw mechanism, a crank slider mechanism, or other mechanisms that can convert one-way rotation into linear reciprocating motion. mechanism. Optionally in this embodiment, both the first reciprocating mechanism 16 and the second reciprocating mechanism 25 adopt incomplete rack-and-pinion reciprocating mechanisms. The first reciprocating mechanism 16 includes a first incomplete gear 12 and a first support frame 11. The first support frame 11 can be arranged in an annular shape, with a first rack 112 and a second rack 113 provided on two opposite inner sides of the annular shape. An incomplete gear 12 alternately meshes with the first rack 112 and the second rack 113 during rotation to drive the first support frame 11 to reciprocate (for example, the first incomplete gear 12 meshes with the first rack 112 to drive When the first incomplete gear 12 and the second rack 113 are meshed and driven, the first supporting frame 11 can be driven to advance along the axial direction of the motor 3. (retreat along the motor 3 axis), the first support frame 11 can be fixedly connected to the first phase shifter 61 through fasteners, thereby realizing the driving function of the first phase shifter. As shown in Figure 3, the first support frame 11 of this embodiment is fixedly connected to the first phase shifter pull rod 51, and the first phase shifter 61 is connected to the first phase shifter pull rod 51 to achieve the first phase shift. Device 61 moves. The second reciprocating mechanism 25 includes a second incomplete gear 22 and a second support frame 21. The second support frame 21 can also be arranged in an annular shape, with a third rack 212 and a fourth rack 213 provided on two opposite inner sides of the annular shape. The second incomplete gear 22 alternately meshes with the third rack 212 and the fourth rack 213 during rotation to drive the second support frame 21 to reciprocate (for example, the second incomplete gear 22 meshes with the third rack 212 During transmission, the second supporting frame 21 can be driven to advance along the axial direction of the motor 3. When the second incomplete gear 22 meshes with the fourth rack 213, the second supporting frame 21 can be driven to retreat along the axial direction of the motor 3). The second supporting frame 21 can be fixedly connected to the second phase shifter 62 through fasteners, thereby realizing the driving function of the second phase shifter 62 . As shown in Figure 3, the second support frame 21 of this embodiment is fixedly connected to the second phase shifter pull rod 52, and the second phase shifter 62 is connected to the second phase shifter pull rod 52 to drive the second phase shifter. Device 62 moves.

Referring to FIG. 1 , the first incomplete gear 12 in the embodiment of the present application includes a cylindrical first gear base body. Gear teeth are provided on only part of the arc around the outer circumference of the first gear base body, and the gear tooth distribution area occupies no more than 10% of the circumference. It is greater than half of the circumference of the first gear base body to avoid interference with the movement of the first incomplete gear 12 . A first connecting shaft is provided in the center of the first gear base. The first connecting shaft is rigidly connected to the inner ring of the first one-way bearing. The outer ring of the first one-way bearing is rigidly connected to the inner wall of the first helical gear 14. When the motor When the motor 3 rotates forward, the first helical gear 14 rotates in one direction and can drive the first incomplete gear 12 to rotate through the first one-way bearing; when the motor 3 rotates reversely, the first helical gear 14 rotates in the other direction. At this time, the first one-way bearing cannot play a transmission role, and therefore cannot drive the first incomplete gear 12 to rotate. Similarly, the second incomplete gear 22 of the application embodiment includes a cylindrical second gear base. Only part of the arc of the outer periphery of the second gear base is provided with gear teeth, and the circumference of the gear tooth distribution area is not larger than that of the second gear base. half of the circumference of the second gear base body to avoid interference with the movement of the second incomplete gear 22. A second connecting shaft is provided at the center of the second gear base. The second connecting shaft is rigidly connected to the inner ring of the second one-way bearing 23. The outer ring of the second one-way bearing is rigidly connected to the inner wall of the second helical gear 24. When When the motor 3 rotates reversely, the second helical gear 24 rotates in one direction and can drive the second incomplete gear 22 to rotate through the second one-way bearing 23; when the motor 3 rotates forward, the second helical gear 24 rotates in the other direction. rotation, at this time the second one-way bearing 23 cannot play a transmission role, and therefore cannot drive the second incomplete gear 22 to rotate.

Optionally, continuing to refer to Figures 1 and 2, the electric control module 4 of the embodiment of the present application includes an electric control board 43, a first position sensor 41 and a second position sensor 42, where the electric control board 43 serves as a control element, and The motor 3 is electrically or communicatively connected, and is configured to control the movement of the motor 3; the first position sensor 41 is electrically or communicatively connected to the electric control board 43, and is configured to identify the initial position of the first phase shifter 61, and set the identified position. The information is fed back to the electric control board 43. The electric control board 43 controls the action of the motor 3 according to the antenna phase change requirements to adjust the first phase shifter 61 to the appropriate position; the second position sensor 42 is electrically connected to the electric control board 43. or communication connection, and is configured to identify the initial position of the second phase shifter 62 and feed back the identified position information to the electric adjustment board 43. The electric adjustment board 43 controls the action of the motor 3 according to the antenna phase change requirements to move the second phase shifter 62. Phase shifter 62 is adjusted to the appropriate position. When the first reciprocating mechanism 16 drives the first phase shifter 61 to reciprocate phase adjustment, the first position sensor 41 is used to identify the initial position, and under the control of the electric adjustment plate 43, phase adjustment at any position can be achieved; the second reciprocating motion When the mechanism 25 drives the second phase shifter 62 to reciprocate phase adjustment, the second position sensor 42 performs initial position identification, and under the control of the electric adjustment board 43, phase adjustment at any position can be achieved. In the related art, mechanical blocking is usually used to determine the initial position of the phase shifter. For example, when a screw nut mechanism is used to drive the phase shifter, when the nut moves to the extreme position, it will collide with the corresponding structural member. When the current signal increases, it can be judged that this position is the initial position, and then the motor starts to reverse, causing the nut to move in the opposite direction. This method will produce a large impact force on the structural parts and easily damage the structural parts. Or it may cause damage to the motor, gearbox and other structures, which will bring a higher failure rate to the equipment, and the working efficiency of this method is low. The embodiment of the present application uses a position sensor to determine the initial position of the phase shifter, avoiding the use of mechanical stalling for positioning, improving the stress conditions of the motor and transmission mechanism, and contributing to the miniaturization design of structural parts. At the same time The reliability and stability of the driving device are improved; and a position sensor is used for positioning, so that the driving device can operate at high speed, which greatly improves the phase modulation efficiency of the phase shifter.

In this embodiment of the present application, the first position sensor 41 and the second position sensor 42 may be non-contact optical coupling sensors or mechanical contact position sensors. Optionally, the first position sensor 41 of this embodiment is a first photoelectric coupling switch, and the second position sensor 42 is a second photoelectric coupling switch. The initial position is positioned through the photoelectric coupling switch without contacting structural parts, and the response is sensitive. It can match the rapid movement of the phase shifter and greatly improves the phase modulation efficiency of the phase shifter. A first shielding arm 111 extends from the end of the first support frame 11. When the first phase shifter 61 moves to the initial position, the first shielding arm 111 is between the light emitting end and the receiving end of the first photoelectric coupling switch. , because the light is blocked, the action of the first photoelectric coupling switch can be triggered. The first photoelectric coupling switch transmits the signal to the electric control board 43 to determine the initial position of the first phase shifter 61, so that the first phase shifter 61 can be subsequently adjusted. Precise adjustment of the position of the phase sensor 61. Similarly, a second shielding arm 211 extends from the end of the second support frame 21. When the second phase shifter 62 moves to the initial position, the second shielding arm 211 is at the light emitting end and receiving end of the second photoelectric coupling switch. Between the two ends, since the light is blocked, the action of the second photoelectric coupling switch can be triggered. The second photoelectric coupling switch transmits the signal to the electric control board 43 to determine the initial position of the second phase shifter 62, so that subsequent alignment can be achieved. Precise adjustment of the position of the second phase shifter 62.

Referring to Figures 1 and 2, the ESC control module 4 of the embodiment of the present application controls the motor 3 to drive two phase shifters for independent phase modulation. The driving process is as follows:

When the motor 3 rotates forward, the motor 3 drives the worm 15 to rotate, and the worm 15 meshes with the first helical gear 14. The inner wall of the first helical gear 14 is rigidly connected to the outer ring of the first one-way bearing. A connecting shaft is rigidly connected to the inner ring of the first one-way bearing, and the first incomplete gear 12 is connected to the first support. The rack on the frame 11 engages to drive the first support frame 11 to reciprocate. The first support frame 11 is fixedly connected to the first phase shifter 61 and performs reciprocating motion synchronously; the first support frame 11 reciprocates along the direction of the motor 3 axis. , when the first support frame 11 moves to the extreme position (the extreme position corresponds to the initial position of the first phase shifter 61), the first shielding arm 111 triggers the first photoelectric coupling switch, and the electronic control module 4 recognizes the first phase shift the initial position of the first phase shifter 61, and then controls the first phase shifter 61 to perform phase modulation at different positions according to the initial position.

When the motor 3 rotates in the reverse direction, the motor 3 drives the worm 15 to rotate, and the worm 15 meshes with the second helical gear 24. The inner wall of the second helical gear 24 is rigidly connected to the outer ring of the second one-way bearing, and the second incomplete gear 22 is connected to the inner wall of the second helical gear 24. The two connecting shafts are rigidly connected to the inner ring of the second one-way bearing. The second incomplete gear 22 meshes with the rack on the second support frame 21 to drive the second support frame 21 to reciprocate. The second support frame 21 and the second The phase shifter 62 is fixedly connected and performs reciprocating motion synchronously; the second support frame 21 reciprocates along the axis direction of the motor 3. When the second support frame 21 moves to the extreme position (the extreme position corresponds to the initial position of the second phase shifter 62 ), the second shielding arm 211 triggers the second photoelectric coupling switch, the electronic control module 4 recognizes the initial position of the second phase shifter 62, and then controls the second phase shifter 62 to perform phase modulation at different positions according to the initial position.

The first one-way bearing and the second one-way bearing isolate the forward transmission line 1 and the reverse transmission line 2, and their movements are mutually exclusive and do not interfere with each other. When the motor 3 rotates forward, the worm 15 drives the first helical gear 14 and the second helical gear 24 to rotate in the opposite direction synchronously. The second helical gear 24 does not transmit power to the second helical gear 24 under the action of the second one-way bearing 23. The incomplete gear 22 and the second incomplete gear 22 are stationary under the resistance of the second phase shifter 62. The first helical gear 14 transmits power to the first incomplete gear under the action of the first one-way bearing 13. Gear 12, the first incomplete gear 12 drives the first support frame 11 to reciprocate; when the motor 3 reversely rotates, the worm 15 drives the first helical gear 14 and the second helical gear 24 to rotate in the opposite direction synchronously, and the first helical gear 14 Under the action of the first one-way bearing, power is not transmitted to the first incomplete gear 12. The first incomplete gear 12 is stationary under the resistance of the first phase shifter 61, and the second helical gear 24 is Under the action of the second one-way bearing, the power is transmitted to the second incomplete gear 22, and the second incomplete gear 22 drives the second support frame 21 to perform reciprocating motion.

Through the above solutions, the embodiment of the present application can drive dual phase shifters with a single motor to perform independent phase modulation according to the antenna phase change requirements.

An embodiment of the present application also provides an electrically adjustable antenna, which includes a housing, an antenna array unit, a feed network, a first phase shifter 61, a second phase shifter 62, and the above-mentioned electrically adjustable antenna driving device. This application utilizes the mutual exclusion of forward and reverse rotation of the motor and combines it with a reciprocating motion mechanism to convert the unidirectional rotational motion of the motor into the reciprocating motion of the phase shifter, thereby achieving the purpose of controlling the independent motion of the two phase shifters. The independent driving of dual-channel phase shifters is achieved through a single motor, which is beneficial to the miniaturization and low-cost design of the mechanism. A position sensor is used for initial position positioning, which avoids positioning through mechanical stalling and improves the stress condition of structural parts. It is conducive to the miniaturization design of structural parts and improves the reliability and stability of structural parts.

The electrically adjustable antenna in this embodiment can be a 5G antenna, which uses a motor to drive two phase shifters to move, which meets the characteristics of a 5G antenna such as small size, compact space, and thin thickness, and is more in line with the low-cost, miniaturized design of the antenna. idea.

Claims

An electrically adjustable antenna driving device, including:

motor(3);

An electronic control module (4) is configured to control the movement of the motor (3);

The forward transmission line (1) includes a first one-way motion mechanism (13) and a first reciprocating motion mechanism (16). The motor (3) communicates with the first one-way motion mechanism through a first transmission mechanism (17). The mechanism (13) is transmission connected, and the first one-way motion mechanism (13) is connected with the first reciprocating motion mechanism (16); when the motor (3) rotates forward, the first one-way motion mechanism (16) 13) It can drive the first reciprocating mechanism (16) to move to drive the first phase shifter (61) to reciprocate the phase;

The reverse transmission line (2) includes a second one-way motion mechanism (23) and a second reciprocating motion mechanism (25). The motor (3) communicates with the second one-way motion mechanism through a second transmission mechanism (26). The mechanism (23) is transmission connected, and the second one-way motion mechanism (23) is connected with the second reciprocating motion mechanism (25); when the motor (3) reverses, the second one-way motion mechanism (25) 23) The second reciprocating mechanism (25) can be driven to move to drive the second phase shifter (62) to reciprocate the phase.
The electrically adjustable antenna driving device according to claim 1, wherein the electrically adjustable control module (4) includes:

The electric control board (43) is connected to the motor (3);

A first position sensor (41), connected to the electric control board (43), is configured to identify the initial position of the first phase shifter;

A second position sensor (42) is connected to the electric control board (43) and is configured to identify the initial position of the second phase shifter.
The electrically adjustable antenna driving device according to claim 2, wherein at least one of the first position sensor (41) and the second position sensor (42) is an optocoupler sensor.
The electrically adjustable antenna driving device according to any one of claims 1 to 3, wherein the first transmission mechanism (17) is a worm gear mechanism or a worm helical gear mechanism; the second transmission mechanism (26) is a worm gear Worm mechanism or worm helical gear mechanism.
The electrically adjustable antenna driving device according to claim 4, wherein the first transmission mechanism (17) includes a worm (15) and a first helical gear (14), and the second transmission mechanism (26) includes the Worm (15) and second helical gear (24), the worm (15) is connected to the output end of the motor (3), the first helical gear (14) and the second helical gear (24) They are respectively meshed with the worm (15) for transmission; when the worm (15) rotates, it can drive the first helical gear (14) and the second helical gear (24) to rotate in the opposite direction synchronously.
The electrically adjustable antenna driving device according to any one of claims 1 to 3, wherein the first unidirectional The motion mechanism (13) is a one-way bearing or a ratchet mechanism; the second one-way motion mechanism (23) is a one-way bearing or a ratchet mechanism.
The electrically adjustable antenna driving device according to claim 2, wherein the first reciprocating mechanism (16) is an incomplete rack and pinion reciprocating mechanism or a reciprocating screw mechanism; the second reciprocating mechanism (25) is Incomplete rack and pinion reciprocating mechanism or reciprocating screw mechanism.
The electrically adjustable antenna driving device according to claim 7, wherein the first reciprocating mechanism (16) includes a first incomplete gear (12) and a first support frame (11), and the first support frame (11) 11) are provided with opposite first racks (112) and second racks (113) on both sides. The first incomplete gear (12) alternates with the first rack (112) during rotation. Engage with the second rack (113) to drive the first support frame (11) to reciprocate, and the first support frame (11) is configured to be fixedly connected to the first phase shifter (61) ; The second reciprocating mechanism (25) includes a second incomplete gear (22) and a second support frame (21), and opposite third racks (21) are provided on both sides of the second support frame (21). 212) and the fourth rack (213), the second incomplete gear (22) alternately meshes with the third rack (212) and the fourth rack (213) during rotation to drive The second support frame (21) reciprocates, and the second support frame (21) is configured to be fixedly connected to the second phase shifter (62).
The electrically adjustable antenna driving device according to claim 8, wherein a first shielding arm (111) extends from an end of the first support frame (11), and when the first phase shifter moves to the initial position In the case of When the second phase shifter moves to the initial position, the second blocking arm (211) can trigger the second position sensor (42) to act.
An electrically adjustable antenna includes a first phase shifter (61), a second phase shifter (62) and the electrically adjustable antenna driving device according to any one of claims 1-9.