CN116315679A

CN116315679A - Remote electric tuning device applied to Massive-MIMO antenna

Info

Publication number: CN116315679A
Application number: CN202111585556.8A
Authority: CN
Inventors: 马昭
Original assignee: Suzhou Shuo Beide Innovation Technology Research Co ltd
Current assignee: Suzhou Shuo Beide Innovation Technology Research Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2023-06-23

Abstract

The utility model relates to a 5G antenna technical field provides a be applied to long-range electric accent device of Massive-MIMO antenna, and this long-range electric accent device is with the power that linear motor provided, transmits the phase shifter to through the slider mechanism of fixing the linear motor below to drive the phase shifter and do straight reciprocating motion. According to the method, the linear motor is used, the force and the motion involved between the signal control input and the output of the radio frequency performance are single linear, so that the risks of torsion, movement, blocking, abrasion and other failure caused by torque are avoided, the limit of the size of the rotary motor on the torque is broken through, the size can be made small in a certain direction, the layout of a Massive-MIMO antenna is facilitated, and the high-speed stability of 5G equipment is guaranteed; the application adopts simple structure's slider mechanism as transmission, and the motion is single reliable, and relative friction is little, and the noise is extremely low, greatly improves energy conversion efficiency, reduces the inefficacy risk simultaneously.

Description

Remote electric tuning device applied to Massive-MIMO antenna

Technical Field

The application relates to the technical field of 5G antennas, in particular to a remote electric tuning device applied to a Massive-MIMO antenna.

Background

With the rapid development of the 5G age, operators are urgent to greatly widen the layout of the 5G base station, but in the face of an obvious short board with high energy consumption and low coverage rate of the 5G base station, the prior art increasingly and widely adopts a large-scale array (Massive-MIMO) antenna with a remote electric tuning (Remote Electrical Tilt, RET) function to overcome the short board.

Currently, the RET scheme for 4G base station antennas is followed by 5G Massive-MIMO (8×12 or 8×8 array) antennas. The scheme is that the rotation of a direct current gear motor is utilized to drive the screw rod to rotate, the screw rod interacts with the spiral groove of the sliding block, the clockwise and anticlockwise rotation motion of the screw rod is converted into the reciprocating linear motion of the sliding block, and then the linear reciprocating motion of the phase shifter medium synchronously fixed with the sliding block is driven. The scheme usually utilizes two groups of screw sliders to drive two groups of phase shifter arrays respectively, or other combination modes.

In another scheme, the rotation of the direct current gear motor is utilized to drive the rigid transmission shaft through a direct (or conical) gear set or a worm gear and worm, gears are fixed on the transmission shaft in an array mode, and each gear and the phase shifter medium directly or indirectly form a gear-rack mechanism, so that the motor is converted into reciprocating linear motion of the phase shifter medium according to clockwise or anticlockwise rotary motion. In the scheme, two motors are used for driving two groups (8 groups of gear group arrays) respectively, tooth tops of the gear group arrays penetrate into a phase shifter cavity and directly cooperate with racks on a phase shifter medium to realize movement; or a motor is adopted to drive a group of gears, the gears and the sliding block with racks are matched to move, and the sliding block is fixed with 16 groups of phase shifter media, so that the phase shifter media are driven to move.

Since the two schemes still use the 4G antenna design, there are a number of drawbacks in 5G applications: 1. the direct-current speed reduction motor is used, and no matter the direct-current speed reduction motor is a brush motor or a brushless motor, the torque is increased by reducing the speed of a planetary gear set, so that the energy loss and the failure risk exist; 2. the minimum size of the available direct current rotating motor of the current antenna is phi 14, and the flattening (thinning) design of the 5 Gmosface-MIMO antenna is greatly limited; 3. in order to realize the conversion of rotary motion into linear motion, the traditional rotary motor must be realized by a screw slider or a gear rack and other mechanisms, so that larger friction force exists, and the energy conversion rate is lower; and 4, the layout limitation of the massive-MIMO antenna ensures that the transmission mechanism of the traditional RET can only be placed in an edge mode, so that power switching is realized by a gear (rack) group, a worm gear, a worm screw, a screw slider or other devices between the motor output and the movable medium of the phase shifter, and the energy loss and failure risk are increased.

Disclosure of Invention

In order to overcome the defects of the prior art, the application aims to provide a remote electric tuning device applied to a Massive-MIMO antenna, so as to solve one or more technical problems in the prior art. Compared with the prior art, the novel energy-saving device has the advantages of simpler structure, higher energy conversion efficiency, lower noise, lower failure risk, lighter and thinner layout and lower cost.

In order to achieve the above purpose, the application provides a remote electric tuning device applied to a Massive-MIMO antenna, which specifically comprises a bottom plate, wherein two groups of phase shifter modules, a transmission module and a power control module are arranged on one side of the bottom plate in a fitting manner.

The transmission module is a sliding block mechanism and is arranged between the two groups of phase shifter modules, and the sliding block mechanism is fixedly connected with the two groups of phase shifter modules; the power control module is arranged on the transmission module in a lamination mode, and a linear motor is arranged in the power control module to provide mechanical force for the two groups of phase shifter modules to do linear reciprocating motion.

Further, the sliding block mechanism comprises a first direction sliding rail, the first direction sliding rail is fixed on the bottom plate, a first direction sliding block is arranged on the first direction sliding rail, and the first direction sliding block is fixedly connected with the two groups of phase shifter modules.

The first direction slide rail comprises two slide ways which are arranged in parallel, a second direction slide rail is carried between the two slide ways, a second direction slide block is sleeved on the second direction slide rail, and second direction slide rail limiting blocks are arranged at two ends of the second direction slide rail so as to limit the second direction slide block to do linear reciprocating motion on the second direction slide rail.

Further, a sliding groove is formed in the first direction sliding block, and a limiting structure which is clamped with the sliding groove is arranged on the second direction sliding block so as to limit the second direction sliding block to move in the sliding groove.

Further, a sliding groove is formed in the first direction sliding block, the second direction sliding block comprises a main body and a pulley, one end of the pulley is movably connected with the main body through a stud, and the other end of the pulley is rotatably clamped with the sliding groove so as to limit the second direction sliding block to move in the sliding groove.

Further, the power control module comprises a bottom shell fixedly connected with the bottom plate, the bottom shell is fixedly provided with the linear motor and a control board for sending instructions to the linear motor, the linear motor comprises a linear motor stator and a linear motor rotor, and the linear motor rotor is fixedly connected with the second direction sliding block.

Further, the control board comprises a linear encoder and an input/output port, wherein the linear encoder provides a power source for the linear motor, and the input/output port is a channel for data exchange between the remote electric modulation device and the equipment end.

Further, a cover plate is fixedly arranged on the bottom shell, a third hole structure is arranged on the cover plate, and the linear motor rotor and the second direction sliding block are fixed through the third hole structure.

Further, the phase shifter module is an array formed by eight equally spaced phase shifter units, each phase shifter unit comprises a metal cavity, two PCB boards are arranged in the metal cavity, and the two PCB boards correspond to positive and negative 45 ^° Two polarized circuits; the two sides of the PCB are respectively provided with a sliding medium in a laminating mode, and the sliding mediums are fixedly connected with the first-direction sliding blocks.

Further, a circuit structure is arranged on the PCB, and the circuit structure is of one-out-two design.

Further, a first hole structure is formed in the sliding medium, a second hole structure is formed in the first-direction sliding block, and the first hole structure is fixedly connected with the second hole structure.

Further, the metal cavities are independently formed and are individually arranged on the bottom plate one by one.

Further, the metal cavities with preset numbers are integrally formed and are installed on the bottom plate in groups.

Further, the bottom plate is a metal plate, and the metal cavity and the bottom plate are integrally formed.

Further, the first direction slide rail, the second direction slide rail fixing block and the second direction slide rail are integrally formed.

Further, rigid corrugations are arranged on the first direction sliding rail.

Further, a first direction scale pointer is further arranged on the first direction sliding rail, and a first direction scale mark is arranged on the first direction sliding block.

Furthermore, a Massive-MIMO antenna is arranged on the other side of the bottom plate, and a feed network of the Massive-MIMO antenna is electrically conducted with the phase shifter module.

Further, connectors are arranged on one side, far away from the bottom plate, of the two groups of phase shifter modules, and the connectors are electrically conducted with the phase shifter modules.

Further, a coupling network module is arranged at one side of the two groups of phase shifter modules away from the bottom plate, and an output port of the coupling network module is electrically conducted with a circuit input port in the phase shifter module.

Further, a filter module is arranged at one side of the two groups of phase shifter modules away from the bottom plate, and an output port of the filter module is electrically conducted with a circuit input port in the phase shifter module.

The application provides a remote electric tuning device applied to a Massive-MIMO antenna, which transmits power provided by a linear motor to a phase shifter through a sliding block mechanism fixed below the linear motor, so as to drive the phase shifter to do linear reciprocating motion. According to the method, the linear motor is used, the force and the motion involved between the signal control input and the output of the radio frequency performance are single linear, so that the risks of torsion, movement, blocking, abrasion and other failure caused by torque are avoided, the limit of the size of the rotary motor on the torque is broken through, the size can be made small in a certain direction, the layout of a Massive-MIMO antenna is facilitated, and the high-speed stability of 5G equipment is guaranteed; the application adopts simple structure's slider mechanism as transmission, and the motion is single reliable, and relative friction is little, and the noise is extremely low, greatly improves energy conversion efficiency, reduces the inefficacy risk simultaneously. Therefore, the remote electric tuning device applied to the Massive-MIMO antenna can subvert the traditional RET design, so that the Massive-MIMO antenna is lighter and thinner, higher in reliability, lower in assembly and lower in part cost, and power consumption distribution of each component can be planned again in the whole design of 5G equipment, so that the power consumption and cost of a 5G AAU system are reduced.

Drawings

In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic side view of a remote electric tuning device applied to a Massive-MIMO antenna according to an embodiment of the present application;

FIG. 2 is a schematic perspective view of the first embodiment of FIG. 1;

FIG. 3 is a detailed perspective view of the embodiment of FIG. 2;

FIG. 4 is an exploded view of the embodiment of FIG. 2;

fig. 5 is a schematic perspective view of a phase shifter element of the phase shifter module of fig. 1;

FIG. 6 is an exploded schematic view of the phase shifter element of FIG. 5;

FIG. 7 is a schematic perspective view of a first embodiment of the transmission module of FIG. 1;

FIG. 8 is an exploded view of the transmission module of FIG. 7;

FIG. 9 is a schematic front view of the transmission module of FIG. 7;

FIG. 10 is a schematic perspective view of the first direction rail of the embodiment shown in FIG. 7;

FIG. 11 is a schematic perspective view of the second slider in the embodiment shown in FIG. 7;

FIG. 12 is an exploded view of the second direction slider of FIG. 11;

FIG. 13 is an exploded schematic view of a first embodiment of the power control module of FIG. 1;

FIG. 14 is a schematic diagram illustrating the cooperation of the transmission module of FIG. 7 and the power control module of FIG. 13;

FIG. 15 is an exploded view of a second embodiment of the transmission module of FIG. 7;

FIG. 16 is an exploded view of a second embodiment of the power control module of FIG. 13;

FIG. 17 is a schematic perspective view of an apparatus incorporating the embodiment of FIGS. 15 and 16;

FIG. 18 is a schematic perspective view of the second embodiment of FIG. 1;

FIG. 19 is an exploded view of the second embodiment of FIG. 18;

fig. 20 is a schematic perspective view of a first direction slider in the second embodiment shown in fig. 18.

In the figure: the device comprises a base plate, a 1-phase shifter module, a 11-metal cavity, a 12-PCB board, a 1211-circuit structure, a 13-sliding medium, a 1311-first hole structure, a 2-transmission module, a 21-first direction sliding rail, a 2111-rigid ripple, a 2112-scale pointer, a 22-first direction sliding block, a 2211-sliding groove, a 2212-first direction mark, a 2213-second direction mark, a 2214-second hole structure, a 2215-first direction scale mark, a 23-second direction sliding rail limiting block, a 24-second direction sliding rail, a 25-second direction sliding block, a 251-main body, a 2511-limiting structure, a 252-pulley, a 253-stud, a 26-simple first direction sliding block, a 3-power control module, a 31-bottom shell, a 32-linear motor stator, a 33-linear motor rotor, a 34-control board, a 3411-input output port, a 35-cover plate and a 3511-third hole structure.

Detailed Description

The technical solutions in the embodiments of the present application will be fully and clearly described below with reference to the accompanying drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In order to facilitate understanding of the technical solutions of the embodiments of the present application, some concepts related to the embodiments of the present application are first described below. In the embodiments of the present application, the term-electrical conduction means the passage of a high frequency radio frequency circuit by direct or indirect welding, elastic contact, slot coupling, etc.; the term fixed is to be understood in a broad sense, and may be integrally manufactured, may be removably mounted, or may be mechanically coupled to a partially movable member.

It should be noted in advance that, in order to more visually describe the technical solution of the embodiment of the present application, based on the conventional device configuration, the embodiment of the present application sets the bottom plate to be in a rectangular configuration, defines the axis position where the long side of the bottom plate is located as a first direction (denoted as V in the drawing), defines the axis position where the wide side of the bottom plate is located as a second direction (denoted as H in the drawing), and in the embodiment of the present application, the first direction V is perpendicular to the second direction H, i.e. the movement mechanisms of the first direction V and the second direction H are orthogonal, but it should be noted that the first direction identifier V and the second direction identifier H do not need to be specified, and may be replaced by other characters.

Referring to fig. 1, a schematic side view of a remote electric tuning device applied to a Massive-MIMO antenna is provided in an embodiment of the present application. The embodiment of the application provides a remote electric tuning device applied to a Massive-MIMO antenna, which specifically comprises a bottom plate 01, and two groups of phase shifter modules 1, a transmission module 2 and a power control module 3 which are fixedly arranged on one side of the bottom plate 01 in a fitting manner. And a Massive-MIMO antenna is arranged on the other side of the bottom plate 01, and a feed network of the antenna is electrically conducted with a circuit output port in the phase shifter module 1.

In the embodiment of the application, the bottom plate 01 is a metal plate, is used as an installation carrier of other components, and can also be used as a corner reflector of the front-end antenna array; the transmission module 2 is a sliding block mechanism which is fixedly connected with the two groups of phase shifter modules 1; the power control module 3 is arranged on the transmission module 2 in a lamination way, and a linear motor is arranged in the power control module 3 to provide mechanical force for the two groups of phase shifter modules 1 to do linear reciprocating motion.

Specifically, the phase shifter module 1, the transmission module 2 and the power control module 3 are disposed along a long side (i.e., a first direction V) of the base plate 01, the phase shifter module 1 is disposed at two ends of the long side of the base plate in two sets of pairs, the transmission module 2 and the power control module 3 are disposed in a middle area, and typically, the power control module 3 is disposed on a side of the transmission module 2 away from the base plate 01 in a stacked manner.

It should be noted that, the transmission module 2 and the power control module 3 are arranged in a laminated manner in the middle and are fixed with the movable components of the two groups of phase shifter modules 1, so that the power control module 3 can directly control the phase change of the phase shifter modules 1. Secondly, the space on one side of the two groups of phase shifter modules 1 far away from the bottom plate 01 is completely left out and is not interfered with the lamination layout of the transmission module 2 and the power control module 3, the layout reduces the size of a mechanical movement part in a Remote Electric Tuning (RET) device as far as possible, more areas can be left out in a limited space, other module layouts of the antenna radio frequency function are facilitated, and the problems that the back space occupation ratio of a Massive-MIMO antenna in the prior scheme is large and the space utilization rate is low are solved. Therefore, the RET device provided by the embodiment of the application overcomes the defects of complicated structure, bulky layout and overlarge volume of split type, switching type and other devices in the prior art, and provides feasibility for high integration, light weight and low cost of the Massive-MIMO antenna.

Embodiment one:

referring to fig. 2-4, a perspective view and a specific exploded view of the first embodiment of fig. 1 are shown. As can be seen in connection with fig. 1 to 4, the phase shifter module 1 is of two sets of array structures arranged in pairs, each set of array structures consisting of eight phase shifter cells, the two sets of array structures comprising sixteen phase shifter cells in total. The long side of each phase shifter unit keeps consistent with the first direction V (namely, the axis position of the long side of the bottom plate 01), and each group of array structures are distributed at equal intervals along the second direction H (namely, the axis position of the wide side of the bottom plate 01).

In particular, referring to fig. 5-6, a schematic perspective view of a phase shifter element in a phase shifter module is shown. As can be seen from the figure, each phase shifter element in turn comprises a metal cavity 11, a PCB board 12 and a sliding medium 13. The metal cavity 11 is divided into two cavities with two open ends, each cavity is internally provided with a PCB 12, and the two PCBs 12 correspond to positive and negative 45-degree polarized circuits; each PCB board 12 is further provided with a circuit structure 1211, the circuit structure 1211 is of a one-out-two design, two sliding media 13 are respectively attached to the upper and lower sides of each PCB board 12, and each sliding media 13 is provided with a first hole structure 1311. It can be seen that the total of four sliding mediums 13 slide against the two PCBs 12, and interact with the circuit 1211 to change the phase between the input and output ports, in addition to the shielding effect of the metal cavity 11 itself. The sliding medium 13 is used as a sliding block which can only linearly move along the first direction V, the metal cavity 11 and the two PCB boards 12 are equivalent to sliding rails, the sliding block mechanism has simple structure and reliable movement, is highly matched with the relation that the phase shift amount in the radio frequency performance is in direct proportion to the displacement amount, and is beneficial to optimizing the layout of the 5 GMactive-MIMO electrically tunable antenna.

In the embodiment of the application, sixteen metal cavities 11 can be formed independently, are individually arranged on the bottom plate 01 one by one, and can simplify part processing and facilitate flexible debugging under the premise of limited early investment through the design. Sixteen metal cavities can be divided into groups with set number according to specific requirements, then each group of metal cavities 11 with set number is integrally formed and then is arranged on the bottom plate 01 in a grouping way; sixteen metal cavities 11 and the bottom plate 01 can be directly formed integrally, through the design, the number of parts required to be assembled can be reduced during fixed plate production transfer, assembly time is reduced, cost is reduced, and the integration degree is improved. In the embodiment of the present application, the metal cavity 11 may be integrally formed with the bottom plate 01.

It should be noted that the circuit structure 1211 is not limited to a one-out-two design, but may be changed to a one-out-one, two-out-four, one-out-four design according to the requirement of the input interface.

In the embodiment of the present application, regarding the mechanical movement aspect of the phase shifter module 1, in the first direction V, all the sliding mediums 13 of each group of eight phase shifter element arrays move synchronously, i.e., in-and-out; the two groups of symmetrically arranged arrays are also in synchronous motion, and when all sliding media 13 of one group of arrays are in a state of sliding out of the metal cavity 11, the other group of symmetrically arranged arrays are in a state of sliding in the metal cavity 11, namely, the sliding media are in the same volt state. Regarding the electrical performance of the phase shifter module 1, the phase changes of all the phase shifter cells are completely synchronized.

Referring to fig. 7-9, there is shown a perspective, exploded and front view of one embodiment of a transmission module 2. In this embodiment, the transmission module 2 is a slider mechanism, and the slider mechanism includes a first direction sliding rail 21 fixed on the bottom plate 01, and a first direction sliding block 22 is disposed on the first direction sliding rail 21, where the first direction sliding block 22 is fixedly connected with two groups of phase shifter modules 1, so that the two groups of phase shifter modules 1 can be driven to do linear reciprocating motion in a first direction V.

The first direction slide rail 21 comprises two parallel slide rails, a second direction slide rail 24 is mounted between the two slide rails, a second direction slide block 25 is sleeved on the second direction slide rail 24, and second direction slide rail limiting blocks 23 are arranged at two ends of the second direction slide rail 24 so as to limit the second direction slide block 25 to do linear reciprocating motion only on the second direction slide rail 24. In this embodiment, the first direction sliding rail 21, the second direction sliding rail limiting block 23 and the second direction sliding rail 24 may be integrally designed.

Specifically, the first direction sliding block 22 is provided with a sliding groove 2211, and the second direction sliding block 25 is provided with a limiting structure 2511 for clamping the sliding groove 2211, so as to limit the second direction sliding block 25 to move in the sliding groove 2211, and in this embodiment, the second direction sliding block 25 and the limiting structure 2511 are integrally formed. In particular, by changing the gradient of the slide groove 2211, that is, the ratio of the projection length of the V direction of the first direction identifier 2212 to the projection length of the H direction of the second direction identifier 2213, the push-pull ratio from the input end to the output end of the transmission module 2 can be changed, and by this structure, the problem that under the condition of size limitation, the push-pull force possibly faced by the linear motor is insufficient, and sixteen phase shifter units are difficult to drive is solved.

More specifically, the second hole structure 2214 is disposed on the first direction slider 22, and the second hole structure 2214 is fixedly connected with the first hole structure 1311 of the sliding medium 13, so that the fixation of the phase shifter module 1 and the transmission module 2 is realized, and when the second hole structure 2214 makes a linear motion in the first direction V, the first hole structure 1311 is driven to make a synchronous motion.

More specifically, the first direction slide rail 21 is further provided with a first direction scale pointer 2112, the first direction slide 22 is provided with a first direction scale mark 2215, and the first direction scale pointer 2112 points to different values of the first direction scale mark 2215 along with the movement of the first direction slide 22 so as to display the electrical downtilt angle of the phase shifter module 1.

Therefore, in the embodiment of the present application, the transmission module 2 is a slider mechanism, and mainly comprises a first direction sliding rail 21, a first direction sliding rail 22, a second direction sliding rail limiting block 23, a second direction sliding rail 24 and a second direction sliding rail 25. As is evident from the figure, two parallel slides of the first direction slide rail 21 are fixed on the bottom plate 01, so that the first direction slide block 22 is limited to move linearly only in the first direction V; two opposite second-direction sliding rail limiting blocks 23 indirectly fix a second-direction sliding rail 24 on the bottom plate 01, and the second-direction sliding rail 24 limits the second-direction sliding block 25 to only perform linear motion in a second direction H; meanwhile, the limiting structure 2511 of the second direction sliding block 25 synchronously limits the second direction sliding block 25 to do oblique linear motion only in the sliding groove 2211 on the first direction sliding block 22, the structure realizes the conversion of force and motion direction and magnitude, ensures the synchronism of the linear motion in the first direction V and the second direction H, and solves the problem that when the sliding distance of the phase shifter module 1 in the first direction V is too large, the mechanical motion part is difficult to layout due to the limited space.

Referring to fig. 10, a perspective view of the first direction slide rail 21 is shown. In order to further optimize the structure, the embodiment of the application provides the rigid corrugation 2111 on the first direction sliding rail 21, and the provision of the rigid corrugation 2111 is beneficial to reducing the friction resistance when the first direction sliding block 22 moves relative to the first direction sliding rail 21, so as to improve the defects of energy loss, noise, failure risk and the like caused by friction.

Referring to fig. 11-12, fig. 11 is an exploded schematic view of an embodiment of the power control module 3, and fig. 12 is a schematic view of the cooperation of the power control module 3 and the power control module 2. As can be seen from fig. 13, the power control module 3 includes a bottom case 31 fixedly connected to the base plate 01, and a linear motor, a control board 34 and a cover plate 35 are fixedly provided on the bottom case 31. Specifically, the linear motor includes a linear motor stator 32 and a linear motor rotor 33; the cover plate 35 is provided with a third hole structure 3511, and as can be seen from fig. 14, the linear motor rotor and the second direction slider 25 can be fixed through the third hole structure 3511; the control board 34 includes a linear encoder that provides a source of power to the linear motor and an input/output port 3411, the input/output port 3411 serving as a channel for data exchange between the remote electrical modulation device and the equipment side.

It can be seen that the power control module 3 is mainly composed of a bottom case 31, a linear motor stator 32, a linear motor rotor 33, a control board 34, and a cover plate 35. The force and the motion output by the power control module 3 are along the second direction H, the force and the motion are changed to the first direction V through the conversion of the transmission module 2, and the movable piece of the phase shifter module 1 is driven to do the linear motion in the first direction V, so that the phase change is realized.

In general, the linear motor stator 32 and the linear motor rotor 33, one being a coil and the other being a permanent magnet. Therefore, in operation, the linear encoder on the control board 34 gives an electric signal to the coil, and the lorentz force is utilized to control the linear motion of the rotor 33 in the track of the stator 32, and meanwhile, the feedback of the motion speed and the position is obtained through the Hall effect, so that the next motion is regulated; the linear motor rotor 33 is fixedly connected to the second directional slider 25 below it, so that forces and movements are transmitted to the phase shifter module 1 via the transmission module 2. The bottom case 31 and the cover plate 35 need to have a certain sealing property to shield the influence of the internal electric field and the magnetic field thereof on the external high-frequency electromagnetic field. The input/output port 3411 on the control board 34 is used as a control port in the embodiment of the present application, and exchanges data with the device side. The hole 3511 in the cover 35 may be used as an operation port for fixing the linear motor rotor 33 to the second direction slider 25 at the time of final installation, or as an observation hole for observing the operation state of the motor. Through the use of linear motor, electric energy conversion efficiency is higher, and the unidirectional linearity of power is better, and push-and-pull force is bigger, has solved the torque inadequacy, the energy loss big that rotate the motor and has brought in all current scheme applications, the card dead locked-rotor risk high scheduling problem.

In the final application of the layout of the embodiment of the application, a connector can be placed on one side of the two groups of phase shifter modules 1 far away from the bottom plate 01, and the connector is electrically conducted with a circuit input port in the phase shifter modules 1, and the combination is a common 5G Massive-MIMO electrically tunable antenna; the coupling network modules can be placed on one side of the two groups of phase shifter modules 1 far away from the bottom plate 01, and the output ports of the coupling network modules are electrically conducted with the circuit input ports in the phase shifter modules 1, so that the combination is a 5G Massive-MIMO electrically tunable antenna with a calibration function; the filter modules can be placed on one side of the two groups of phase shifter modules 1 far away from the bottom plate 01, and the output ports of the filter modules are electrically conducted with the circuit input ports in the phase shifter modules 1, so that the combination is a 5G Massive-MIMO electrically tunable antenna with a filtering function.

In summary, the first embodiment of the present application provides a new remote electric tuning device applied to a Massive-MIMO antenna, which specifically includes a base plate, a phase shifter module, a transmission module and a power control module. The bottom plate is a metal plate, and can be used as a mounting carrier of other components and also can be used as a corner reflector (reflecting plate) of the front-end antenna array; the phase shifter module comprises a metal cavity, a PCB and a sliding medium, wherein the phase shifter module adopts a push-pull sliding medium phase shifter, and the sliding medium of the phase shifter module makes linear reciprocating motion relative to the metal cavity and the PCB, so that the change of the radio frequency phase shift can be realized; the transmission module comprises a sliding rail, a sliding block and a limiting structure, wherein the transmission module only uses a sliding block mechanism, and only the sliding block with linear freedom degree does linear reciprocating motion under the limitation of the sliding rail; the power control module comprises a metal bottom shell, a linear motor stator, a metal rotor, a control panel and a metal cover plate, and the power control module uses a linear motor (linear thrust motor) as a source for converting electric signals into mechanical motion force, and is high in energy conversion efficiency and low in loss. In addition, according to the embodiment of the application, as soon as the thrust is increased by utilizing the slope principle, the limit of the size to the force during motor selection can be reduced by a simple structure, and the antenna layout is better.

Embodiment two:

in the second embodiment, the first embodiment is partially optimized, and the focus is on optimizing the structure of the second direction slider 25. As shown in fig. 13-14, which are schematic perspective views and exploded views of the optimized structure of the second direction slider 25, it can be seen from the figures that the second direction slider 25 mainly comprises a main body 251 and a pulley 252, wherein one end of the pulley 252 is movably connected with the main body 251 through a stud 253, and the other end of the pulley 252 is rotatably connected with a sliding groove 2211 in a clamping manner, so that the pulley 252 itself rotates in the sliding groove 2211 with the stud 253 as an axis while limiting the second direction slider 25 to only reciprocate in the sliding groove 2211. Thus, when the second direction slider 25 moves in contact with the first direction slider 22, the rotation of the pulley 252 greatly reduces the friction resistance with the slide groove 2211, and further improves the defect problem related to friction.

The description and related theory of other parts will not be repeated herein, and specific reference is made to embodiment one.

Embodiment III:

fig. 15 to 17 are perspective views and combined views of the transmission module 2 and the power control module 3 according to the third embodiment. Since the structural principle of the third embodiment and the related theory are the same as those of the first embodiment, the description thereof will not be provided in detail herein, but will be briefly described. Referring to fig. 15, it can be seen that, in the third embodiment, the transmission module 2 in the first embodiment is partially adjusted and optimized, and comparing fig. 7, 8 and 15, and fig. 14 and 17, it is obvious that the structures of the first direction slide rail, the second direction slide rail and the slide block can be expanded in form or number; the sliding groove mechanism can be expanded in quantity, direction or form to improve the synchronism of force and motion in two directions and reduce moment type damping, so that expansion embodiments with similar properties are all within the protection scope of the application. Accordingly, as can be seen from fig. 13, 14, 16 and 17, the linear motor stator 32, the linear motor rotor 33 and the control board 34 of the power control module 3 can be changed in different forms or combined in different components based on the theory of the first embodiment, and therefore, the development of similar properties is also within the scope of the present application.

Embodiment four:

embodiment IV is another representation of a side view of the remote electric adjustment device shown in fig. 1 of the embodiment of the present application, and refer specifically to fig. 18-20, wherein fig. 18-19 are a perspective view and an exploded view of embodiment IV, and fig. 20 is a perspective view of a first direction slider of embodiment IV. Since the fourth embodiment is still based on the big framework of the present application and is partially improved and optimized, the structural principle of the fourth embodiment and its related theory remain the same as those of the first embodiment, so the structural relationship and the motion theory will not be described in detail herein, and only the description is briefly made, and the specific details refer to the first embodiment.

As can be seen by comparing fig. 2 and 18, fig. 4 and 19, and fig. 9 and 20, the transmission module 2 can be simplified without converting the force and the movement direction and magnitude, and the force and the movement direction output by the power control module 3 are along the first direction V, and the linear motor rotor 33 is fixed with the simple first direction slider 26 to directly drive the linear movement of the phase shifter module 1; the housing of the power control module 3 serves as a sliding rail in the first direction, and the structure can be simplified. With such a structure, when the power control module 3 is matched with the phase shifter module 1 in terms of force and stroke, the number of parts is further reduced, friction loss is reduced, layout is optimized, and cost is reduced.

In summary, compared to the prior art, the embodiment of the present application has the following advantages: the structure is simpler, and energy conversion efficiency is higher, and the noise is lower, and the failure risk is lower, and the overall arrangement is lighter and thinner, and the cost is lower.

First, the power control module uses the linear motor, has broken through the restriction of rotating the motor size to the moment of torsion, can make the size very small in a certain direction, can make very thin, do benefit to the overall arrangement of Massive-MIMO antenna.

Second, compare traditional rotation motor, linear motor directly utilizes lorentz force, and electric energy conversion efficiency is higher, and linear motor has high-speed, thrust is big, displacement accurate characteristics, can provide the guarantee for 5G equipment's high-speed stability.

Thirdly, the linear motor directly drives the sliding medium of the phase shifter to do linear reciprocating motion, and the related force and motion are single linear between the signal control input and the output of the radio frequency performance, so that the risks of failure such as torsion, movement, blocking, abrasion and the like caused by torque can be avoided.

Fourth, the transmission module abandons the complex mechanisms such as the gear (rack) group, the worm gear, the screw slider and the like of the traditional RET scheme, and only adopts a slider mechanism with simple structure, and as the slider mechanism is a 2-level orthogonal movement mechanism, namely the movement directions of the sliders in two directions are mutually perpendicular, the movements are related, and the degrees of freedom are mutually limited. Therefore, the motion is single and reliable, the relative friction is small, the noise is extremely low, the generation of a large amount of idle work can be reduced, the energy conversion efficiency is greatly improved, the failure risk in the torque conversion push-pull force process in the traditional scheme is avoided, and the flattening design of the Massive-MIMO antenna is facilitated.

Fifth, the transmission module is simple in design, single in part, and compared with the traditional RET scheme, fewer in required moulds, fewer in installation working hours and extremely low in cost.

Sixthly, the phase shifter module adopts a push-pull sliding medium phase shifter, the phase shift change of which is proportional to the linear displacement of the sliding medium, so that the stability of changing the radio frequency performance by mechanical linear motion is ensured; and the phase shifter is long and flat, which is beneficial to the array layout of the Massive-MIMO antenna.

Seventh, the transmission module of the optimized version increases the thrust by utilizing the simple inclined plane principle, so that the linear motor is smaller and thinner in volume under the condition of certain push-pull force, and the Massive-MIMO antenna layout is further optimized.

Therefore, the RET device provided by the embodiment of the application overturns the traditional RET design, can make the Massive-MIMO antenna lighter and thinner, has higher reliability, is lower in assembly and part cost, and can re-plan the power consumption distribution of each component in the whole design of 5G equipment, thereby reducing the system power consumption and cost of 5G AAU.

The application provides a remote electric tuning device applied to a Massive-MIMO antenna, which specifically comprises a bottom plate 01, wherein two groups of phase shifter modules 1, a transmission module 2 and a power control module 3 are arranged on one side of the bottom plate 01 in a laminating manner; the transmission module 2 is a sliding block mechanism and is arranged between the two groups of phase shifter modules 1, and the sliding block mechanism is fixedly connected with the two groups of phase shifter modules 1; the power control module 3 is arranged on the transmission module 2 in a lamination manner, and a linear motor is arranged in the power control module 3 to provide mechanical force for the two groups of phase shifter modules 1 to do linear reciprocating motion.

According to the technical scheme, the remote electric tuning device applied to the Massive-MIMO antenna is provided, and the remote electric tuning device transmits power provided by the linear motor to the phase shifter through the sliding block mechanism fixed below the linear motor, so that the phase shifter is driven to do linear reciprocating motion. According to the method, the linear motor is used, the force and the motion involved between the signal control input and the output of the radio frequency performance are single linear, so that the risks of torsion, movement, blocking, abrasion and other failure caused by torque are avoided, the limit of the size of the rotary motor on the torque is broken through, the size can be made small in a certain direction, the layout of a Massive-MIMO antenna is facilitated, and the high-speed stability of 5G equipment is guaranteed; the application adopts simple structure's slider mechanism as transmission, and the motion is single reliable, and relative friction is little, and the noise is extremely low, greatly improves energy conversion efficiency, reduces the inefficacy risk simultaneously. Therefore, the remote electric tuning device applied to the Massive-MIMO antenna can subvert the traditional RET design, so that the Massive-MIMO antenna is lighter and thinner, higher in reliability, lower in assembly and lower in part cost, and power consumption distribution of each component can be planned again in the whole design of 5G equipment, so that the power consumption and cost of a 5G AAU system are reduced.

The foregoing detailed description of the present application, in conjunction with the detailed description and the exemplary examples, will enable one skilled in the art to understand or practice the present application, but such description is not to be construed as limiting the present application. Those skilled in the art will appreciate that various equivalent substitutions, modifications and improvements may be made to the technical solution of the present application and its embodiments without departing from the spirit and scope of the present application, and these all fall within the scope of the present application. The scope of the application is defined by the appended claims.

Claims

1. The remote electric tuning device applied to the Massive-MIMO antenna is characterized by comprising a bottom plate (01), wherein two groups of phase shifter modules (1), a transmission module (2) and a power control module (3) are arranged on one side of the bottom plate (01) in a fitting manner;

the transmission module (2) is a sliding block mechanism and is arranged between the two groups of phase shifter modules (1), and the sliding block mechanism is fixedly connected with the two groups of phase shifter modules (1);

the power control module (3) is arranged on the transmission module (2) in a laminated mode, and a linear motor is arranged in the power control module (3) to provide mechanical force for the two groups of phase shifter modules (1) to do linear reciprocating motion.

2. A remote electric tuning device applied to a Massive-MIMO antenna according to claim 1, characterized in that the slider mechanism comprises a first direction slide rail (21), the first direction slide rail (21) is fixed on the base plate (01), a first direction slider (22) is arranged on the first direction slide rail (21), and the first direction slider (22) is fixedly connected with the two groups of phase shifter modules (1);

the first direction slide rail (21) comprises two parallel slide rails, a second direction slide rail (24) is mounted between the two slide rails, a second direction slide block (25) is sleeved on the second direction slide rail (24), and second direction slide rail limiting blocks (23) are arranged at two ends of the second direction slide rail (24) so as to limit the second direction slide block (25) to do linear reciprocating motion on the second direction slide rail (24).

3. The remote electric tuning device for a Massive MIMO antenna according to claim 2, wherein the first direction slider (22) is provided with a sliding slot (2211), and the second direction slider (25) is provided with a limiting structure (2511) that is engaged with the sliding slot (2211) so as to limit the movement of the second direction slider (25) in the sliding slot (2211).

4. The remote electric tuning device for a Massive-MIMO antenna according to claim 2, wherein the first direction slider (22) is provided with a chute (2211), the second direction slider (25) includes a main body (251) and a pulley (252), one end of the pulley (252) is movably connected with the main body (251) through a stud (253), and the other end of the pulley (252) is rotatably clamped with the chute (2211) so as to limit the movement of the second direction slider (25) in the chute (2211).

5. A remote electric tuning device applied to a Massive-MIMO antenna according to claim 2, characterized in that the power control module (3) comprises a bottom shell (31) fixedly connected to the bottom plate (01), the bottom shell (31) being fixedly provided with the linear motor and a control board (34) for sending instructions to the linear motor;

the linear motor comprises a linear motor stator (32) and a linear motor rotor (33), wherein the linear motor rotor (33) is fixedly connected with the second direction sliding block (25).

6. The remote electric tuning device for a Massive-MIMO antenna according to claim 2, wherein the phase shifter module (1) is an array of eight equally spaced phase shifter units, the phase shifter units comprise a metal cavity (11), two PCBs (12) are disposed in the metal cavity (11), and the two PCBs (12) correspond to positive and negative 45 ^° Two polarized circuits;

the two sides of the PCB (12) are respectively provided with a sliding medium (13), and the sliding mediums (13) are fixedly connected with the first-direction sliding blocks (22).

7. A remote electric tuning device for a Massive-MIMO antenna according to claim 6, characterized in that the sliding medium (13) is provided with a first hole structure (1311) and the first direction slider (22) is provided with a second hole structure (2214);

the first aperture structure (1311) is fixedly connected with the second aperture structure (2214).

8. Remote electric tuning device for Massive MIMO antennas according to claim 6, characterized in that the metallic cavities (11) are shaped independently, mounted one by one on the base plate (01).

9. A remote electric tuning device for a Massive MIMO antenna according to claim 2, characterized in that the first direction sliding rail (21), the second direction sliding rail stopper (23) and the second direction sliding rail (24) are integrally formed.

10. A remote tone device for a Massive MIMO antenna according to claim 2, characterized in that the first direction rail (21) is provided with rigid corrugations (2111).

11. A remote tone device applied to a Massive-MIMO antenna according to any of claims 2-10, characterized in that the first direction slide rail (21) is further provided with a first direction scale pointer (2112), and the first direction slide block (22) is provided with a first direction scale mark (2215).