CN221041545U

CN221041545U - Transmission device for phase shifter, phase shifter and base station antenna

Info

Publication number: CN221041545U
Application number: CN202322759306.2U
Authority: CN
Inventors: 王旭; 丁必扬; 郭以栋; 刘旭虎; 赵鑫; 孙静
Original assignee: Prologis Communication Technology Suzhou Co Ltd
Current assignee: Prologis Communication Technology Suzhou Co Ltd
Priority date: 2023-10-13
Filing date: 2023-10-13
Publication date: 2024-05-28
Anticipated expiration: 2033-10-13

Abstract

The utility model relates to a transmission device for a phase shifter, a phase shifting device and a base station antenna, wherein the transmission device for the phase shifter comprises: a first drive shaft mechanically coupled to the output shaft of the motor; the first driving wheel is coaxially arranged with the first driving shaft; at least one second drive wheel; at least one synchronous pulley, wherein at least one second driving wheel of the at least one second driving wheel and the first driving wheel are meshed with the corresponding synchronous pulley; and at least one second drive shaft, which is arranged coaxially to the respective second transmission wheel and is configured for rotational movement of the drive shaft for driving the phase shifter. In the transmission according to the present disclosure, one or more second drive shafts can be driven in rotation by one first drive shaft via a synchronous pulley, which in turn drives the drive shaft of the phase shifter in rotational motion.

Description

Transmission device for phase shifter, phase shifter and base station antenna

Technical Field

The present disclosure relates to the field of mobile communications, and more particularly, to a transmission device for a phase shifter and a phase shifting device and a base station antenna including the same.

Background

With the development of mobile communication technology, more stringent requirements are being placed on the base station antennas and the overall communication system architecture. For the base station antenna, the requirements of miniaturization, light weight, high precision and high integration are met, and the requirements of more severe electrical performance are also met, so that the requirements for the overall architecture design of the base station antenna and the arrangement of a driving device of a phase shifter are higher.

As a very important component of the antenna, the integration degree of the phase shifter is also increasing. Common physical phase shifter driving devices control movement of a dielectric substrate through translational input, and generally occupy more space. In the translational input direction, not only does the driving control rod occupy space, but also certain space is reserved for displacement generated in the phase shifting process, so that the volume of the phase shifter is larger. In addition, when the driver and the phase shifter are dislocated, the connecting piece arranged in the direction perpendicular to the translational input occupies space, and the problems of reduced transmission precision, small transmission force and the like can be caused. At the same time, the driver also needs to be provided with an additional reduction mechanism. The traditional technology for driving the phase shifter converts the rotation motion of a motor into horizontal movement through a worm gear or a mechanical matching mode such as a screw nut, and then drives a medium in a cavity to translate through an adapter such as a pull rod, so that the phase of an antenna is changed. It can be seen that the conventional transmission occupies a large space, and the structure of the transmission for realizing the phase shift is complicated.

Disclosure of utility model

The technical problems existing in the prior art, namely that the traditional transmission device in the prior art is large in occupied space and complex in structure. Based on this, the inventors of the present disclosure innovatively conceived a technique for implementing antenna phase shifting by using a synchronous pulley in order to achieve the requirements of expansion in the antenna width direction, light weight, high accuracy, and the like. The antenna solves the problem that the driving efficiency is reduced because the antenna width span is large if the traditional pull rod adapter is used to bring about the length of a force arm and generate certain torsion.

In summary, in view of the above technical problem, a first aspect of the present disclosure proposes a transmission for a phase shifter, the transmission comprising:

a first drive shaft mechanically coupled to the output shaft of the motor;

the first driving wheel is coaxially arranged with the first driving shaft;

At least one second drive wheel;

at least one synchronous pulley, wherein at least one second driving wheel of the at least one second driving wheel and the first driving wheel are meshed with the corresponding synchronous pulley; and

At least one second drive shaft, which is arranged coaxially to the respective second transmission wheel and is configured for rotational movement of the drive shaft for driving the phase shifter.

In the transmission proposed according to the present disclosure, one or more second drive shafts can be driven in rotation by a first drive shaft via a synchronous pulley, which in turn drives the drive shaft of the phase shifter in rotational motion. So set up, one or more second drive shafts can be set up in the coplanar, also can set up in different planes, the drive mode is nimble. In addition, the dielectric plate or the sliding sheet of the phase shifter is driven in a rotating manner without additional space occupation, thereby contributing to miniaturization of the phase shifter.

Preferably, in one embodiment according to the present disclosure, when the at least one second drive shaft comprises more than three second drive shafts, the more than three second drive shafts are disposed on different planes. In this way, the transmission according to the present disclosure uses a synchronous pulley, unlike the use of racks to drive only a second drive wheel on the same plane, so that it is possible to drive a second drive wheel on a different plane by means of a synchronous pulley. Furthermore, the transmission according to the present disclosure can also make the spatial layout of the phase shifters more flexible, thereby enabling the transmission according to the present disclosure to adapt to different types of phase shifters, as well as to different spatial arrangements of phase shifters.

Preferably, in one embodiment according to the present disclosure, the transmission further comprises:

at least one rotating stud disposed on the drive shaft and coaxially disposed with the first drive shaft or the corresponding second drive shaft.

In such a way, the screw rod rack is driven to translate by means of the cooperation of the rotary stud and the screw rod rack arranged on the phase shifter medium plate by means of the rotary motion of the rotary stud, and then the phase shifting medium plate is driven to translate, so that the phase shifting function of the phase shifter is realized.

And a gear selecting and shifting device arranged between an output shaft of the motor and the first driving shaft.

In this way, it is possible to determine which phase shifters need to be shifted and with what gear ratio the phase shifters are shifted by means of the gear selector.

And a motor that provides a driving force to the first driving shaft.

In this way, the driving of the phase shift movement of the phase shifter can be realized in an electromotive manner of the motor.

Preferably, in one embodiment according to the present disclosure, the number of the at least one synchronous pulley corresponds to the number of the at least one second transmission wheel. That is, there are several synchronous pulleys with several second driving wheels, and the synchronous pulleys and the second driving wheels are in one-to-one correspondence. In this way, it is possible with the aid of the synchronous pulleys to realize that the first drive shaft drives the second drive wheels, and thus the phase shifters, one-to-one via the respective synchronous pulleys.

Preferably, in one embodiment according to the present disclosure, the synchronous pulley is engaged with at least two second drive wheels. In this way, when the second transmission wheel is not on the same plane, the second transmission wheel can be driven by means of one synchronous pulley, one belt two or even more, thereby further reducing the number of synchronous pulleys and simplifying the structure of the transmission device according to the present disclosure.

In addition, in order to solve the problem that the medium adapter interferes with the cavity when the medium moves in the translational scheme, generally, the cavity needs to be provided with a long groove, which brings about resonance and other problems affecting the radio frequency performance. To solve these problems, a second aspect of the present disclosure proposes a phase shifting device including:

The cavity phase shifter comprises a feed network, dielectric plates arranged at two sides of the feed network, a pull rod and a screw rod rack; and

According to the transmission proposed according to the first aspect of the present disclosure,

The cavity phase shifter comprises a cavity, a screw rod and a rack, wherein an avoidance hole is formed in the top wall or the bottom wall of the cavity phase shifter, so that the rotary stud can be meshed with the screw rod and the rack through the avoidance hole.

In the phase shifting device provided by the disclosure, the screw rod rack is driven to translate by means of the cooperation of the rotary stud and the screw rod rack arranged on the phase shifter medium plate by means of the rotary motion of the rotary stud, and only the avoiding hole is formed in the phase shifter cavity, so that the long groove is prevented from being formed in the phase shifter cavity, and the phase shifting medium plate can be driven to translate, so that the phase shifting function of the phase shifter is realized.

Preferably, in one embodiment according to the present disclosure, the tie rod and the lead screw rack are fixedly connected with the dielectric plate, respectively. In this way, the rotary stud-driven media sheet movement can be achieved in a simple manner.

Furthermore, a third aspect of the present disclosure proposes a phase shifting device comprising:

The arc phase shifter comprises a feed network and arc sliding sheets which are arranged at two sides of the feed network and are fixedly connected with each other, and teeth are arranged at the peripheral sides of the arc sliding sheets; and

The teeth of the arc sliding sheets of the arc phase shifter are meshed with the rotary studs.

Preferably, in one embodiment according to the present disclosure, the phase shifting device further comprises:

the base plate is used for fixing the arc-shaped phase shifter and the transmission device.

Further, a fourth aspect of the present disclosure proposes a base station antenna comprising the transmission device according to the first aspect of the present disclosure or the phase shifting device according to the second aspect of the present disclosure or the third aspect of the present disclosure.

In summary, in the transmission device according to the present disclosure, one or more second drive shafts can be driven to rotate by one first drive shaft via the synchronous pulley, so as to drive the drive shaft of the phase shifter to rotate. So set up, one or more second drive shafts can be set up in the coplanar, also can set up in different planes, the drive mode is nimble. In addition, the dielectric plate or the sliding sheet of the phase shifter is driven in a rotating manner without additional space occupation, thereby contributing to miniaturization of the phase shifter.

Drawings

The embodiments are shown and described with reference to the drawings. The drawings serve to illustrate the basic principles and thus only show aspects necessary for understanding the basic principles. The figures are not to scale. In the drawings, like reference numerals refer to like features.

FIG. 1 illustrates a schematic structural view of a transmission 100 according to one embodiment of the present disclosure;

FIG. 2 shows a schematic structural view of a transmission 200 according to another embodiment of the present disclosure;

fig. 3 shows a schematic structure of a phase shifting apparatus 300 according to an embodiment of the present disclosure;

Fig. 4 shows a schematic structural diagram of a phase shifting apparatus 400 according to another embodiment of the present disclosure; and

Fig. 5 shows a schematic structural diagram of a phase shifting apparatus 500 according to still another embodiment of the present disclosure.

Other features, characteristics, advantages and benefits of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Detailed Description

In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof. The accompanying drawings illustrate, by way of example, specific embodiments in which the disclosure may be practiced. The illustrated embodiments are not intended to be exhaustive of all embodiments according to the present disclosure. It is to be understood that other embodiments may be utilized and structural or logical modifications may be made without departing from the scope of the present disclosure. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present disclosure is defined by the appended claims.

In summary, in view of the above technical problems, the present disclosure proposes a transmission for a phase shifter, the transmission comprising: a first drive shaft mechanically coupled to the output shaft of the motor; the first driving wheel is coaxially arranged with the first driving shaft; at least one second drive wheel; at least one synchronous pulley, wherein at least one second driving wheel of the at least one second driving wheel and the first driving wheel are meshed with the corresponding synchronous pulley; and at least one second drive shaft, which is arranged coaxially to the respective second transmission wheel and is configured for rotational movement of the drive shaft for driving the phase shifter. In the transmission proposed according to the present disclosure, one or more second drive shafts can be driven in rotation by a first drive shaft via a synchronous pulley, which in turn drives the drive shaft of the phase shifter in rotational motion. So set up, one or more second drive shafts can be set up in the coplanar, also can set up in different planes, the drive mode is nimble. In addition, the dielectric plate or the sliding sheet of the phase shifter is driven in a rotating manner without additional space occupation, thereby contributing to miniaturization of the phase shifter.

The specific structure of the transmission device and the corresponding phase shifting device according to the present disclosure will be described below with reference to fig. 1 to 5. It will be appreciated by those skilled in the art that the embodiments shown below are merely exemplary and not limiting, which are merely intended to illustrate the structural principles of a transmission according to the present disclosure, and not intended to be exhaustive of the transmission and the corresponding phase shifting device proposed according to the present disclosure. Technical solutions according to the inventive concept of the present disclosure fall within the protection scope of the claims of the present disclosure.

Specifically, fig. 1 shows a schematic structural view of a transmission 100 according to one embodiment of the present disclosure, fig. 2 shows a schematic structural view of a transmission 200 according to another embodiment of the present disclosure, fig. 3 shows a schematic structural view of a phase shifting device 300 according to one embodiment of the present disclosure, fig. 4 shows a schematic structural view of a phase shifting device 400 according to another embodiment of the present disclosure, and fig. 5 shows a schematic structural view of a phase shifting device 500 according to yet another embodiment of the present disclosure.

As can be seen from fig. 1, the transmission 100 for a phase shifter proposed in the present disclosure includes: a first drive shaft 101, said first drive shaft 101 being mechanically connected (either directly or via a mechanical transmission such as a gear) to an output shaft of a motor (not shown in fig. 1); a first driving wheel 102, wherein the first driving wheel 102 is coaxially arranged with the first driving shaft 101; at least one second drive wheel 103; at least one synchronous pulley 104, wherein at least one second transmission wheel 103 of the at least one second transmission wheel 103 and the first transmission wheel 102 are engaged with the respective synchronous pulley 104; and at least one second drive shaft 105, which at least one second drive shaft 105 is arranged coaxially with the respective second drive wheel 103 and is configured for rotational movement of a drive shaft (not shown in fig. 1) for driving the phase shifter.

Furthermore, in order to fix the rotational axis of the drive wheels, the drive 100 can also comprise, for example, two fixing jaws, for example, a fixing jaw 106 and a fixing jaw 107, between which two fixing jaws 106 and 107 the drive wheels can be arranged for fixing.

In the transmission 100 proposed in accordance with the present disclosure, one or more second drive shafts 105 can be driven in rotation by a first drive shaft 101 via a synchronous pulley 104, which in turn drives the drive shaft (not shown in fig. 1) of the phase shifter in rotational motion. Since the synchronous pulley 104 is adopted to respectively engage the first driving wheel 102 serving as the driving wheel and the second driving wheel 103 serving as the driven wheel, the different second driving wheels 103 are not necessarily positioned on a horizontal plane, but the positions of the second driving wheels 103 can be adapted according to the specific positions of the driving shafts for driving the phase shifters, the arrangement is flexible, the positions of the driving shafts of the phase shifters of different types can be flexibly adapted, and the application scene and the range of the transmission device according to the disclosure are improved. In general terms, the at least one second drive shaft is arranged in a different plane. In this way, the spatial layout of the phase shifters can be made more flexible, enabling the transmission according to the present disclosure to adapt to different types of phase shifters, as well as to different spatial arrangements of phase shifters.

In addition to the components of the transmission 100 shown in fig. 1, a drive device, for example an electric motor, can be included. Fig. 2 shows a schematic structural view of a transmission 200 according to another embodiment of the present disclosure. As can be seen from fig. 2, the transmission 200, in addition to the structure shown in fig. 1, can preferably also comprise a motor 208 as a drive and optionally also a gear selector 209 as an intermediate transmission. In this way, it is possible to determine which phase shifters need to be shifted and with what gear ratio the phase shifters are shifted by means of the gear selector. Specifically, a motor control signal can be input through a motor controller, and then the driving force of the motor 208 is output to the corresponding rotating shaft of the transmission device 200 according to the disclosure through the gear selecting and shifting device 209, and the rotating shaft drives the transmission wheel to further drive the dielectric block of the phase shifter to translate, so that the phase of the antenna is changed. As shown in fig. 2, the driving force of the motor 208 is output to a first driving shaft of the transmission device, the first driving shaft is concentrically engaged with a first driving wheel, a second driving wheel is engaged with the first driving wheel through a synchronous pulley, and the second driving shaft is concentrically engaged with the second driving wheel. The second drive shaft is rotated by rotation of the first drive shaft. The second driving shaft is concentrically matched with the driving shaft for driving the phase shifter, so that the spiral cylinder at the cavity avoiding groove (which is shown in combination with fig. 3) is driven to rotate, the screw rod rack in the cavity is driven to horizontally move, and meanwhile, the pull rod and the phase shifting medium in the cavity are respectively fixed with the screw rod rack in pairs, so that the phase shifting medium block is driven to relatively move relative to the feed line, and the phase of the antenna is changed.

In addition, in order to solve the problem that the medium adapter interferes with the cavity when the medium moves in the translational scheme, generally, the cavity needs to be provided with a long groove, which brings about resonance and other problems affecting the radio frequency performance. To solve these problems, a second aspect of the present disclosure proposes a phase shifting device including: the cavity phase shifter comprises a feed network, dielectric plates arranged at two sides of the feed network, a pull rod and a screw rod rack; and the transmission device according to the first aspect of the present disclosure, wherein an avoidance hole is formed in a top wall or a bottom wall of the cavity phase shifter, so that the rotary stud can be meshed with the screw rod rack through the avoidance hole. In the phase shifting device provided by the disclosure, the screw rod rack is driven to translate by means of the cooperation of the rotary stud and the screw rod rack arranged on the phase shifter medium plate by means of the rotary motion of the rotary stud, and only the avoiding hole is formed in the phase shifter cavity, so that the long groove is prevented from being formed in the phase shifter cavity, and the phase shifting medium plate can be driven to translate, so that the phase shifting function of the phase shifter is realized.

As shown in fig. 3, the transmission disclosed in accordance with the present disclosure comprises, for example, at least one rotary stud 301, said rotary stud 301 being arranged on a drive shaft 302 for driving said phase shifter and being arranged coaxially with the above-mentioned first drive shaft or the corresponding second drive shaft. In such a way, the screw rod rack is driven to translate by means of the cooperation of the rotary stud and the screw rod rack arranged on the phase shifter medium plate by means of the rotary motion of the rotary stud, and then the phase shifting medium plate is driven to translate, so that the phase shifting function of the phase shifter is realized. The pull rod and the screw rod rack are respectively and fixedly connected with the dielectric plate. In this way, the rotary stud-driven media sheet movement can be achieved in a simple manner. The arrangement can enable the rotation of the motor to enable the rotary stud 301 to rotate, and further enable the screw rod rack 303 to translate along the longitudinal direction of the phase shifting medium block 304, so that the phase shifting purpose is achieved. Here, since the rotary stud 301 always rotates at the same position, only one avoiding groove 306 needs to be formed in the phase shifter cavity 305, and the avoiding groove does not need to be formed in the whole longitudinal direction of the phase shifter cavity 305. The phase shifter 300 further comprises, for example, a feed network 307 and a pull rod 308.

In the transmission device shown in fig. 1 and 3 above, the number of the synchronous pulleys corresponds to the number of the second transmission wheels. That is, there are several synchronous pulleys with several second driving wheels, and the synchronous pulleys and the second driving wheels are in one-to-one correspondence. In this way, it is possible with the aid of the synchronous pulleys to realize that the first drive shaft drives the second drive wheels, and thus the phase shifters, one-to-one via the respective synchronous pulleys. Of course, it should also be understood by those skilled in the art that a one-to-one correspondence is not necessary here, and that it is also possible, for example, to design the timing pulleys to engage with at least two second transmission wheels. In this way, when the second transmission wheel is not on the same plane, the second transmission wheel can be driven by means of one synchronous pulley, one belt two or even more, thereby further reducing the number of synchronous pulleys and simplifying the structure of the transmission device according to the present disclosure.

Fig. 4 shows a schematic structural diagram of a phase shifting apparatus 400 according to another embodiment of the present disclosure. As can be seen from fig. 4, one motor 401 enables synchronous driving of multiple cavity phase shifters 404 via the action of the transmission device proposed in accordance with the present disclosure (e.g., comprising a gear selector 402 and a synchronous pulley device 403). Here, it should be understood by those skilled in the art that the phase shifters herein all lie within one plane are merely exemplary and not limiting. Of course, the phase shifters may also be located in different planes.

Of course, the above-described transmission device can be used not only for a cavity phase shifter but also for an arc phase shifter. Fig. 5 shows a schematic structural diagram of a phase shifting apparatus 500 according to still another embodiment of the present disclosure. As can be seen from fig. 5, the arc-shaped phase shifter is not provided with a screw rod rack, but is provided with a rack at the edge of the sliding vane of the arc-shaped phase shifter, so that the rotation of the motor can rotate a driving shaft for driving the phase shifter, and the sliding vane of the arc-shaped phase shifter can slide, thereby achieving the phase shifting purpose of the arc-shaped phase shifter. That is, one motor 501 can achieve synchronous driving of a plurality of arc-shaped phase shifters 504 via the action of a transmission device (including, for example, a gear shift device 502 and a synchronous pulley device 503) proposed in accordance with the present disclosure. In an abstract, a third aspect of the disclosure proposes a phase shifting apparatus comprising: the arc phase shifter comprises a feed network and arc sliding sheets which are arranged at two sides of the feed network and are fixedly connected with each other, and teeth are arranged at the peripheral sides of the arc sliding sheets; and a transmission device according to the first aspect of the present disclosure, wherein teeth of an arc slide of the arc phase shifter are engaged with the rotating stud. Preferably, in one embodiment according to the present disclosure, the phase shifting device further comprises a base plate for fixing the arc-shaped phase shifter and the transmission device.

Further, a fourth aspect of the present disclosure proposes a base station antenna comprising the transmission device as proposed according to the first aspect of the present disclosure or the phase shifting device as proposed according to the second aspect of the present disclosure or according to the third aspect of the present disclosure.

Although various exemplary embodiments of the present disclosure have been described, it will be apparent to those skilled in the art that various changes and modifications can be made which will achieve one or more of the advantages of the disclosure without departing from the spirit and scope of the disclosure. Other components performing the same function may be replaced as appropriate by those of ordinary skill in the art. It will be appreciated that features explained herein with reference to particular figures may be combined with features of other figures, even in those cases where such is not explicitly mentioned. Furthermore, the methods of the present disclosure may be implemented in either all software implementations using appropriate processor instructions or in hybrid implementations utilizing hardware logic and software logic combinations to achieve the same results. Such modifications to the solution according to the present disclosure are intended to be covered by the appended claims.

Claims

1. A transmission for a phase shifter, the transmission comprising:

a first drive shaft mechanically coupled to the output shaft of the motor;

the first driving wheel is coaxially arranged with the first driving shaft;

At least one second drive wheel;

2. The transmission of claim 1, wherein when the at least one second drive shaft comprises more than three second drive shafts, the more than three second drive shafts are disposed on different planes.

3. The transmission of claim 1, further comprising:

4. The transmission of claim 1, further comprising:

5. The transmission of claim 1, wherein the number of the at least one timing pulley corresponds to the number of the at least one second drive wheel.

6. The transmission of claim 1, wherein the timing pulley is engaged with at least two second drive wheels.

7. A phase shifting device, characterized in that the phase shifting device comprises:

A transmission device according to claim 3,

8. The phase shifting apparatus of claim 7, wherein the tie rod and the lead screw rack are fixedly connected to the dielectric plate, respectively.

9. A phase shifting device, characterized in that the phase shifting device comprises:

A transmission device according to claim 3,

10. A base station antenna, characterized in that it comprises a transmission device according to any of claims 1-5 or a phase shifting device according to any of claims 7-9.