Phase shifter drive mechanism, electrically steerable antenna and system, phase steering method

Abstract

The present disclosure provides a phase shifter driving mechanism, wherein the phase shifter driving mechanism comprises an execution member, a power shaft and a transmission assembly, the execution member is matched with the transmission assembly, the power shaft is matched with the transmission assembly, and the transmission assembly is used for converting the rotary motion of the power shaft into the linear motion of the execution member; when the power shaft rotates clockwise, the transmission assembly stops converting the rotary motion of the power shaft into the linear motion of the execution member after moving the execution member to a first limit position along a first direction; when the power shaft rotates counterclockwise, the transmission assembly stops converting the rotary motion of the power shaft into the linear motion of the execution member after moving the execution member to a second limit position along a second direction, and the first direction and the second direction are opposite. The present disclosure also provides an electrically adjustable antenna, an electrically adjustable antenna system and a phase adjusting method.

Description

Technical Field

[0001] This disclosure relates to the field of communication equipment, specifically to a phase shifter driving mechanism, an electrically adjustable antenna, an electrically adjustable antenna system, and a phase shifter modulation method. Background Technology

[0002] In mobile communications, signal coverage is achieved by installing base station antennas at base stations and ensuring that the antenna beams cover the area. When the geographical features or user distribution of this area change, the beam radiation direction of the base station antennas needs to be adjusted to restore signal coverage to the changed area.

[0003] To adjust the beam radiation direction of a base station antenna, the phase shifter inside the antenna can be adjusted to change the signal phase of each element, thereby altering the beam direction. In other words, by driving the phase shifter within the antenna through a transmission device, the radiation angle of the mobile communication antenna can be adjusted, thus achieving signal phase adjustment. Therefore, electrically tunable antenna systems for base stations play a crucial role in mobile communication networks. Accordingly, the phase shifter, as a key component for realizing the electrically tunable antenna function, is a key research focus for electrically tunable antennas.

[0004] Currently, 5G technology is developing rapidly. 5G antennas are characterized by their small size, compact size, and thinness. Meanwhile, with continuously evolving needs and enhanced functionality, traditional antenna electrical adjustment functions rely on a stalled motor drive for zero-position identification. However, the motor torque reaches its peak during stalling, placing high demands on the mechanical performance of structural components and the motor gearbox. Furthermore, to avoid rigid impacts during stalling, the control strategy requires sophisticated techniques, resulting in complex control programs and low phase-shifting efficiency. Summary of the Invention

[0005] The purpose of this disclosure is to provide a phase shifter drive mechanism, an electrically adjustable antenna, an electrically adjustable antenna system, and a phase shifter modulation method.

[0006] This disclosure provides a phase shifter drive mechanism, wherein the phase shifter drive mechanism includes an actuator, a power shaft, and a transmission assembly. The actuator cooperates with the transmission assembly, the power shaft cooperates with the transmission assembly, and the transmission assembly is used to convert the rotational motion of the power shaft into the linear motion of the actuator.

[0007] When the power shaft rotates clockwise, the transmission assembly moves the actuator to the first limit position along the first direction and then stops converting the rotational motion of the power shaft into the linear motion of the actuator.

[0008] When the power shaft rotates counterclockwise, the transmission assembly moves the actuator to the second limit position along the second direction and then stops converting the rotational motion of the power shaft into the linear motion of the actuator. The first direction and the second direction are opposite.

[0009] Optionally, the transmission assembly includes a first one-way transmission assembly and a second one-way transmission assembly;

[0010] The first unidirectional transmission assembly is used to convert the clockwise rotational motion of the power shaft into linear movement of the actuator along the first direction;

[0011] The second unidirectional transmission assembly is used to convert the counterclockwise rotational motion of the power shaft into linear movement of the actuator along the second direction.

[0012] Optionally, the actuator includes a mounting body and meshing teeth, the meshing teeth being formed on the meshing surface of the mounting body;

[0013] The first one-way transmission assembly includes a first one-way bearing, a first main drive gear, and a first driven gear. The inner ring of the first one-way bearing is sleeved on the power shaft, and the first main drive gear is sleeved on the outer ring of the first one-way bearing. The first driven gear meshes with the first main drive gear, and the first driven gear meshes with the meshing teeth of the actuator. When the power shaft rotates clockwise, the inner and outer rings of the first one-way bearing are relatively stationary, and the outer ring of the first one-way bearing rotates clockwise with the power shaft. When the power shaft rotates counterclockwise, the inner ring of the first one-way bearing rotates counterclockwise with the power shaft. There is relative rotation between the outer rings of the first one-way bearing and the outer ring of the first one-way bearing. At the first limit position, the first driven gear disengages from the meshing teeth.

[0014] The second one-way transmission assembly includes a second one-way bearing, a second main drive gear, and a second driven gear. The inner ring of the second one-way bearing is fitted onto the power shaft, and the second main drive gear is fitted onto the outer ring of the second one-way bearing. The second driven gear meshes with the second main drive gear and also meshes with the meshing teeth of the actuator. When the power shaft rotates clockwise, the inner and outer rings of the second one-way bearing rotate relative to each other, and the inner ring of the second one-way bearing rotates clockwise with the power shaft. When the power shaft rotates counterclockwise, the inner ring of the second one-way bearing rotates counterclockwise with the power shaft. The outer rings of the second one-way bearing remain relatively stationary. At the second limit position, the second driven gear disengages from the meshing teeth.

[0015] Optionally, the number of teeth of the first driven gear is the same as the number of teeth of the second driven gear;

[0016] The number of teeth on the first main drive gear is the same as the number of teeth on the second main drive gear.

[0017] Optionally, the phase shifter drive mechanism further includes a chassis, and the transmission assembly is disposed within the chassis.

[0018] Optionally, the phase shifter drive mechanism further includes a drive motor, the output shaft of which is connected to the power shaft.

[0019] As a second aspect of this disclosure, an electrically tunable antenna is provided, the electrically tunable antenna including at least one phase shifter and at least one phase shifter driving mechanism, wherein the phase shifter driving mechanism is the phase shifter driving mechanism provided in the first aspect of this disclosure, each phase shifter driving mechanism corresponds to a corresponding phase shifter, and the actuator is connected to the adjustment element of the corresponding phase shifter.

[0020] Optionally, the electrically tunable antenna includes two phase shifters and two phase shifter drive mechanisms.

[0021] As a third aspect of this disclosure, a phase adjustment method for a phase shifter is provided, wherein the phase adjustment method includes:

[0022] The time for unidirectional rotation of the drive motor is determined, wherein the output shaft of the drive motor is connected to the power shaft of the phase shifter drive mechanism described in the first aspect of this disclosure;

[0023] If the time for the drive motor to rotate in one direction is greater than the time required for the actuator to complete its full unidirectional stroke under the drive of the drive motor, the position of the phase shifter is determined to be zero.

[0024] As a fourth aspect of this disclosure, an electrically tunable antenna system is provided, wherein the electrically tunable antenna system includes an electrically tunable antenna, a phase shifter driving mechanism, a memory, and a controller. The electrically tunable antenna is the electrically tunable antenna provided in the second aspect of this disclosure, the phase shifter driving mechanism is the phase shifter driving mechanism provided in the first aspect of this disclosure, and the memory stores an executable program. When the controller calls the executable program, it can implement the phase modulation method provided in the third aspect of this disclosure.

[0025] In the phase shifter drive mechanism provided in this disclosure, the output shaft of the drive motor rotates clockwise, driving the power shaft to rotate. Under the drive of the power shaft, after the transmission assembly moves the actuator to the first limit position, even if the output shaft of the drive motor drives the power shaft to continue rotating, the transmission assembly no longer converts the rotational motion of the power shaft into the linear motion of the actuator.

[0026] If the controller determines that the clockwise rotation time of the drive motor exceeds the time required for the actuator to complete a one-way full stroke under the drive of the drive motor, it indicates that the actuator has adjusted the phase shifter to the zero position.

[0027] The output shaft of the drive motor rotates counterclockwise, driving the power shaft to rotate. Under the drive of the power shaft, the transmission assembly moves the actuator to the second limit position. Even if the output shaft of the drive motor continues to drive the power shaft to rotate, the transmission assembly no longer converts the rotational motion of the power shaft into the linear motion of the actuator.

[0028] If the controller determines that the counterclockwise rotation time of the drive motor exceeds the time required for the actuator to complete a one-way full stroke under the drive of the drive motor, it indicates that the actuator has adjusted the phase shifter to zero.

[0029] In this disclosure, the transmission assembly enables the phase shifter to idle after being adjusted to the zero position by the drive motor control actuator. That is, the phase shifter can be zeroed without the drive motor stalling, which reduces the mechanical performance requirements of each component of the phase shifter drive mechanism and also reduces damage to the drive motor. Attached Figure Description

[0030] Figure 1 This is an exploded view of one embodiment of the phase shifter drive mechanism provided in this disclosure;

[0031] Figure 2 This is a schematic diagram of the transmission assembly, in which the second one-way bearing is not shown;

[0032] Figure 3 This is an exploded view of one embodiment of the phase shifter drive mechanism provided in this disclosure, in which a first one-way bearing and a second one-way bearing are shown;

[0033] Figure 4 This is an end view of the phase shifter drive mechanism provided in this disclosure, wherein the actuator is located in the first extreme position;

[0034] Figure 5 This is an end view of the phase shifter drive mechanism provided in this disclosure, wherein the actuator is located in the second extreme position;

[0035] Figure 6 This is a schematic diagram of the electrically adjustable antenna provided in this disclosure, wherein the radiating elements are not shown;

[0036] Figure 7 This is a flowchart of the phase modulation method provided in this disclosure. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solutions of this disclosure, the phase shifter driving mechanism, electrically adjustable antenna, electrically adjustable antenna system, and phase shifter adjustment method provided in this disclosure will be described in detail below with reference to the accompanying drawings.

[0038] Exemplary embodiments will be described more fully below with reference to the accompanying drawings; however, these exemplary embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will enable those skilled in the art to fully understand the scope of this disclosure.

[0039] Where there is no conflict, the various embodiments of this disclosure and the features thereof in the embodiments may be combined with each other.

[0040] As used herein, the term “and / or” includes any and all combinations of one or more related enumerated entries.

[0041] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this disclosure. As used herein, the singular forms “a” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It will also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the stated feature, integral, step, operation, element, and / or component is specified, but the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof is not excluded.

[0042] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and this disclosure, and will not be interpreted as having an idealized or overly formal meaning, unless expressly so defined herein.

[0043] As one aspect of this disclosure, a phase shifter drive mechanism is provided, wherein, as Figure 1 , Figure 2 and Figure 3 As shown, the phase shifter drive mechanism includes an actuator 100, a power shaft 200, and a transmission assembly 300. The actuator 100 cooperates with the transmission assembly 300, the power shaft 200 cooperates with the transmission assembly 300, and the transmission assembly 300 is used to convert the rotational motion of the power shaft 200 into the linear motion of the actuator 100.

[0044] like Figure 4As shown, when the power shaft 200 rotates clockwise, the transmission assembly 300 moves the actuator 100 to the first limit position along the first direction and then stops converting the rotational motion of the power shaft 200 into the linear motion of the actuator 100.

[0045] like Figure 5 As shown, when the power shaft 200 rotates counterclockwise, the transmission assembly 300 moves the actuator 100 to the second limit position along the second direction and then stops converting the rotational motion of the power shaft 200 into the linear motion of the actuator 100. The first direction and the second direction are opposite.

[0046] It should be noted that when adjusting the phase of the phase shifter, the actuator 100 is connected to the adjusting component of the phase shifter, the power shaft 200 is connected to the output shaft 400 of the drive motor, and the controller controls the output of the drive motor.

[0047] The output shaft 400 of the drive motor rotates clockwise, driving the power shaft 200 to rotate. Under the drive of the power shaft 200, the transmission assembly 300 moves the actuator 100 to the first limit position. Even if the output shaft 400 of the drive motor drives the power shaft 200 to continue rotating, the transmission assembly 300 will no longer convert the rotational motion of the power shaft 200 into the linear motion of the actuator 100.

[0048] If the controller determines that the clockwise rotation time of the drive motor exceeds the time required for the actuator 100 to complete its unidirectional full stroke under the drive of the drive motor, it indicates that the actuator 100 has adjusted the phase shifter to zero.

[0049] The output shaft 400 of the drive motor rotates counterclockwise, driving the power shaft 200 to rotate. Under the drive of the power shaft 200, the transmission assembly 300 moves the actuator 100 to the second limit position. Even if the output shaft 400 of the drive motor drives the power shaft 200 to continue rotating, the transmission assembly 300 will no longer convert the rotational motion of the power shaft 200 into the linear motion of the actuator 100.

[0050] If the controller determines that the counterclockwise rotation time of the drive motor exceeds the time required for the actuator 100 to complete its unidirectional full stroke under the drive of the drive motor, it indicates that the actuator 100 has adjusted the phase shifter to zero.

[0051] In this disclosure, the transmission assembly 300 enables the phase shifter to idle after the drive motor control actuator 100 adjusts the phase shifter to zero position. That is, the phase shifter can be zeroed without the drive motor stalling, which reduces the mechanical performance requirements of each component of the phase shifter drive mechanism and also reduces damage to the drive motor.

[0052] In this disclosure, the specific structure of the transmission assembly 300 is not specifically limited. For ease of control and structural simplification, as an optional implementation, the transmission assembly 300 may include a first one-way transmission assembly 310 and a second one-way transmission assembly 320. In this implementation, the first one-way transmission assembly 310 can convert the clockwise rotation of the power shaft 200 into linear movement of the actuator 100 along a first direction, and the second one-way transmission assembly 320 can convert the counterclockwise rotation of the power shaft 200 into linear movement of the actuator 100 along a second direction. It should be noted that the movement of the first one-way transmission assembly 310 and the movement of the second one-way transmission assembly 320 do not interfere with each other.

[0053] There are many mechanical structures that can convert rotary motion into linear motion. For example, rotary motion can be converted into linear motion through a gear and rack mechanism, through a belt drive, or through a chain drive.

[0054] To make the phase shifter drive mechanism more compact, in this embodiment, as... Figures 1 to 5 As shown, a rack and pinion mechanism is used to convert the rotational motion of the power shaft 200 into linear movement of the actuator 100. Specifically:

[0055] The actuator 100 includes a mounting body 110 and a meshing tooth 120, the meshing tooth 120 being formed on the meshing surface of the mounting body 110.

[0056] The first one-way transmission assembly 310 includes a first one-way bearing 311, a first main drive gear 312, and a first driven gear 313. The inner ring of the first one-way bearing 311 is fitted onto the drive shaft 200, and the first main drive gear 312 is fitted onto the outer ring of the first one-way bearing 311. The first main drive gear 312 meshes with the first driven gear 313, and the first driven gear 313 meshes with the meshing teeth 120 of the actuator 100.

[0057] The term "one-way bearing" refers to a bearing in which the inner and outer rings can rotate relative to each other in one of the clockwise or counterclockwise directions, while remaining relatively stationary and engaged in the other direction. This is not limited to one-way bearings; ratchet mechanisms or other one-way motion mechanisms can be used. In this disclosure, the inner ring of the first one-way bearing 311 is fitted onto the power shaft 200 and can rotate with the rotation of the power shaft 200. When the power shaft 200 rotates clockwise, the inner and outer rings of the first one-way bearing 311 are engaged and relatively stationary. When the power shaft 200 rotates counterclockwise, the inner and outer rings of the first one-way bearing 311 can rotate relative to each other. That is, when the power shaft 200 rotates counterclockwise, the inner ring of the first one-way bearing 311 rotates with the power shaft 200, while the outer ring of the first one-way bearing 311 does not rotate under the constraint of the actuator 100. In other words, in this disclosure, when the power shaft 200 rotates clockwise, the inner and outer rings of the first one-way bearing 311 are relatively stationary, and the outer ring of the first one-way bearing 311 rotates clockwise with the power shaft 200. When the power shaft 200 rotates counterclockwise, the inner ring of the first one-way bearing 311 rotates counterclockwise with the power shaft 200, and there is relative rotation between the outer rings of the first one-way bearing 311. At the first extreme position, the first driven gear 313 disengages from the meshing teeth 120. In this case, after the first one-way transmission assembly 310 drives the actuator 100 to the first extreme position, the continued rotation of the first driven gear 313 will not affect the position of the actuator 100. The actuator 100 is connected to the phase shifter, and under the action of the phase shifter, the actuator 100 is stationary; this position is the zero position of the phase shifter.

[0058] Accordingly, the second one-way transmission assembly 320 includes a second one-way bearing 321, a second main transmission gear 322, and a second driven gear 323. The inner ring of the second one-way bearing 321 is sleeved on the power shaft 200, and the second main transmission gear 323 is sleeved on the outer ring of the second one-way bearing 321. The second driven gear 323 meshes with the second main transmission gear 322, and the second driven gear 323 meshes with the meshing teeth 120 of the actuator 100. When the power shaft 200 rotates clockwise, the inner and outer rings of the second one-way bearing 321 rotate relative to each other, and the inner ring of the second one-way bearing 321 rotates clockwise with the power shaft 200. When the power shaft 200 rotates counterclockwise, the inner ring of the second one-way bearing 321 rotates counterclockwise with the power shaft 200. The inner ring and the outer ring of the second one-way bearing 321 are relatively stationary. At the second limit position, the second driven gear 323 disengages from the meshing teeth 120. In this situation, after the second one-way transmission assembly 320 drives the actuator 100 to the second limit position, the continued rotation of the second driven gear 323 will not affect the position of the actuator 100. The actuator 100 is connected to the phase shifter, and under the action of the phase shifter, the actuator 100 is in a stationary state, which is the zero position of the phase shifter.

[0059] In the above embodiment, when the power shaft 200 rotates clockwise, the first driven gear 313 can transmit power to the meshing teeth 120 of the actuator 100. When the meshing teeth 120 move in the first direction, they can drive the second driven gear 323 to rotate, and the second driven gear 323 can drive the second main drive gear 322 to rotate. After the actuator 100 moves to the first limit position, although the first driven gear 313 disengages from the meshing teeth 120, the second driven gear 323 remains engaged with the meshing teeth 120. When the power shaft 200 rotates counterclockwise, the power shaft 200 drives the second main drive gear 322 to rotate, and the second main drive gear 322 drives the second driven gear 323 to rotate, thereby driving the actuator 100 to move in the second direction. During this process, the meshing teeth 120 can drive the first driven gear 313 to rotate, and also drive the first main drive gear 312 to rotate. When the actuator 100 reaches the second limit position, the second driven gear 323 disengages from the meshing teeth 120, but the first driven gear 313 remains engaged with the meshing teeth 120. As the power shaft 200 continues to rotate clockwise, the first main drive gear 312 can drive the first driven gear 313 to rotate and drive the actuator 100 to move along the first direction.

[0060] For ease of manufacturing and assembly, in this disclosure, the number of teeth of the first driven gear 313 is the same as the number of teeth of the second driven gear 323, and the number of teeth of the first main drive gear 312 is the same as the number of teeth of the second main drive gear 322.

[0061] To protect the transmission assembly 300, in this disclosure, the phase shifter drive mechanism further includes a housing 500, and the transmission assembly 300 is disposed within the housing 500.

[0062] In this disclosure, no particular limitation is made on how power is supplied to the power shaft 200. For example, power can be supplied to the power shaft 200 by a purchased drive motor. Of course, the phase shifter drive mechanism can also have its own drive motor, the output shaft 400 of which is connected to the power shaft 200.

[0063] As a second aspect of this disclosure, an electrically tunable antenna is provided, such as Figure 6 As shown, the electrically adjustable antenna includes at least one phase shifter and at least one phase shifter driving mechanism, wherein the phase shifter driving mechanism is the phase shifter driving mechanism provided in the first aspect of this disclosure, each of the phase shifter driving mechanisms corresponds to a corresponding phase shifter, and the actuator is connected to the adjustment element of the corresponding phase shifter.

[0064] The output shaft 400 of the drive motor rotates clockwise, driving the power shaft 200 to rotate. Under the drive of the power shaft 200, the transmission assembly 300 moves the actuator 100 to the first limit position. Even if the output shaft 400 of the drive motor drives the power shaft 200 to continue rotating, the transmission assembly 300 will no longer convert the rotational motion of the power shaft 200 into the linear motion of the actuator 100.

[0065] If the controller determines that the clockwise rotation time of the drive motor exceeds the time required for the actuator 100 to complete its unidirectional full stroke under the drive of the drive motor, it indicates that the actuator 100 has adjusted the phase shifter to zero.

[0066] The output shaft 400 of the drive motor rotates counterclockwise, driving the power shaft 200 to rotate. Under the drive of the power shaft 200, the transmission assembly 300 moves the actuator 100 to the second limit position. Even if the output shaft 400 of the drive motor drives the power shaft 200 to continue rotating, the transmission assembly 300 will no longer convert the rotational motion of the power shaft 200 into the linear motion of the actuator 100.

[0067] If the controller determines that the counterclockwise rotation time of the drive motor exceeds the time required for the actuator 100 to complete its unidirectional full stroke under the drive of the drive motor, it indicates that the actuator 100 has adjusted the phase shifter to zero.

[0068] In this disclosure, the transmission assembly enables the phase shifter to idle after the drive motor control actuator 100 adjusts the phase shifter to zero position. That is, the phase shifter can be zeroed without the drive motor stalling, which reduces the mechanical performance requirements of each component of the phase shifter drive mechanism and also reduces damage to the drive motor.

[0069] It should be noted that the electrically adjustable antenna may also include multiple radiating elements, which will not be elaborated here.

[0070] In this disclosure, the number of phase shifters is not specifically limited. As shown in the figure, the electrically adjustable antenna includes two phase shifters and two phase shifter drive mechanisms.

[0071] As a third aspect of this disclosure, a phase adjustment method for a phase shifter is provided, wherein, as Figure 7 As shown, the phase modulation method includes:

[0072] In step S310, the time for unidirectional rotation of the drive motor is determined, wherein the output shaft of the drive motor is connected to the power shaft of the phase shifter drive mechanism provided in the first aspect of this disclosure;

[0073] In step S320, if the time for the drive motor to rotate in one direction is greater than the time required for the drive motor to complete its full unidirectional stroke, the position of the phase shifter is determined to be zero.

[0074] It should be noted that the above "unidirectional rotation" can refer to clockwise rotation or counterclockwise rotation.

[0075] In this disclosure, the transmission assembly 300 enables the phase shifter to idle after the drive motor control actuator 100 adjusts the phase shifter to zero position. That is, the phase shifter can be zeroed without the drive motor stalling, which reduces the mechanical performance requirements of each component of the phase shifter drive mechanism and also reduces damage to the drive motor.

[0076] As a fourth aspect of this disclosure, an electrically tunable antenna system is provided, wherein the electrically tunable antenna system includes an electrically tunable antenna, a phase shifter driving mechanism, a memory, and a controller. The electrically tunable antenna is the electrically tunable antenna provided in the second aspect of this disclosure, the phase shifter driving mechanism is the phase shifter driving mechanism provided in the first aspect of this disclosure, and the memory stores an executable program. When the controller calls the executable program, it can implement the phase modulation method provided in the third aspect of this disclosure.

[0077] Those skilled in the art will understand that all or some of the steps, systems, or apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technique for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0078] This is a general illustrative meaning and is not intended to be limiting. In some instances, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in connection with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in connection with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of this disclosure as set forth by the appended claims.

Claims

1. A phase shifter drive mechanism characterized by, The phase shifter driving mechanism comprises an actuator, a power shaft and a transmission assembly, the actuator is matched with the transmission assembly, the power shaft is matched with the transmission assembly, and the transmission assembly is used for converting the rotary motion of the power shaft into the linear motion of the actuator; When the power shaft rotates clockwise, the transmission assembly stops converting the rotary motion of the power shaft into the linear motion of the actuator after moving the actuator to the first limit position along the first direction; When the power shaft rotates counterclockwise, the transmission assembly stops converting the rotary motion of the power shaft into the linear motion of the actuator after moving the actuator to the second limit position along the second direction, the first direction and the second direction are opposite; The transmission assembly comprises a first one-way transmission assembly and a second one-way transmission assembly; The first one-way transmission assembly is used for converting the clockwise rotary motion of the power shaft into the linear motion of the actuator along the first direction; The second one-way transmission assembly is used for converting the counterclockwise rotary motion of the power shaft into the linear motion of the actuator along the second direction.

2. The phase shifter drive mechanism of claim 1, wherein, The actuator comprises a mounting body and engagement teeth, the engagement teeth are formed on the engagement surface of the mounting body; The first one-way transmission assembly comprises a first one-way bearing, a first main transmission gear and a first slave transmission gear, the inner ring of the first one-way bearing is sleeved on the power shaft, the first main transmission gear is sleeved on the outer ring of the first one-way bearing, the first slave transmission gear is engaged with the first main transmission gear, and the first slave transmission gear is engaged with the engagement teeth of the actuator, when the power shaft rotates clockwise, the inner ring and the outer ring of the first one-way bearing are relatively static, and the inner ring of the first one-way bearing rotates clockwise with the power shaft, when the power shaft rotates counterclockwise, the inner ring of the first one-way bearing rotates counterclockwise with the power shaft, the outer ring of the first one-way bearing and the outer ring of the first one-way bearing exist relative rotation, and the first slave transmission gear is disengaged from the engagement teeth at the first limit position; The second one-way transmission assembly comprises a second one-way bearing, a second main transmission gear and a second slave transmission gear, the inner ring of the second one-way bearing is sleeved on the power shaft, the second main transmission gear is sleeved on the outer ring of the second one-way bearing, the second slave transmission gear is engaged with the second main transmission gear, and the second slave transmission gear is engaged with the engagement teeth of the actuator, when the power shaft rotates clockwise, the inner ring and the outer ring of the second one-way bearing rotate relatively, and the inner ring of the second one-way bearing rotates clockwise with the power shaft, when the power shaft rotates counterclockwise, the inner ring of the second one-way bearing rotates counterclockwise with the power shaft, the outer ring of the second one-way bearing and the outer ring of the second one-way bearing are relatively static, and the second slave transmission gear is disengaged from the engagement teeth at the second limit position.

3. The phase shifter drive mechanism of claim 2, wherein, The number of teeth of the first slave transmission gear is the same as the number of teeth of the second slave transmission gear. The first main transmission gear has the same number of teeth as the second main transmission gear.

4. The phase shifter drive mechanism of any one of claims 1 to 3, wherein, The phase shifter driving mechanism further comprises a machine box, and the transmission assembly is arranged in the machine box.

5. The phase shifter drive mechanism of any one of claims 1 to 3, wherein, The phase shifter driving mechanism further comprises a driving motor, and an output shaft of the driving motor is connected with the power shaft.

6. An electrically adjustable antenna comprising at least one phase shifter and at least one phase shifter drive mechanism, characterized in that, The phase shifter driving mechanism is any one of the phase shifter driving mechanisms in claims 1 to 5, and each phase shifter driving mechanism corresponds to a corresponding phase shifter, and the actuator is connected with the adjusting member of the corresponding phase shifter.

7. The electrically adjustable antenna of claim 6, wherein, The electrically adjustable antenna comprises two phase shifters and two phase shifter driving mechanisms.

8. A method of phase modulation of a phase shifter, characterized by, The phase adjusting method comprises: determining the time for the driving motor to rotate in one direction, wherein an output shaft of the driving motor is connected with the power shaft of the phase shifter driving mechanism in any one of claims 1 to 4; in the case that the time for the driving motor to rotate in one direction is greater than the time required for the actuator to move in one direction through a full stroke under the driving of the driving motor, determining the position of the phase shifter as zero position.

9. An electrically adjustable antenna system, characterized by The electrically adjustable antenna system comprises an electrically adjustable antenna, a phase shifter driving mechanism, a memory and a controller, the electrically adjustable antenna is the electrically adjustable antenna in claim 6 or 7, the phase shifter driving mechanism is any one of the phase shifter driving mechanisms in claims 1 to 5, and the memory stores an executable program, and when the controller calls the executable program, the phase adjusting method in claim 8 can be realized.

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