CN114221130B - Multi-frequency antenna and frequency-selective phase-shifting device thereof - Google Patents
Multi-frequency antenna and frequency-selective phase-shifting device thereof Download PDFInfo
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- CN114221130B CN114221130B CN202111584374.9A CN202111584374A CN114221130B CN 114221130 B CN114221130 B CN 114221130B CN 202111584374 A CN202111584374 A CN 202111584374A CN 114221130 B CN114221130 B CN 114221130B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/32—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/20—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements characterised by the operating wavebands
- H01Q5/28—Arrangements for establishing polarisation or beam width over two or more different wavebands
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- Computer Networks & Wireless Communication (AREA)
- Transmission Devices (AREA)
Abstract
本发明提供的一种选频移相装置，选频机构在传动螺杆上固设有移相齿轮，通过主动齿轮驱动传动螺杆沿其轴向方向移动，使移相齿轮可以移动到并排平行设置的多个频段对应的移相齿条中的任意一个的位置，并与之啮合，即选中某一频段天线对应的移相齿条；另外通过移相机构的驱动齿轮和选频机构的主动齿轮同时驱动所述传动螺杆仅作周向转动，以使移相齿轮带动与之啮合的移相齿条移动，以对该移相齿条相对应频段的天线进行调相操作。因此达到控制多个移相齿条相对应的天线频段信号移相的目的。本发明另外还提供了一种包括上述选频移相装置的多频天线。
The present invention provides a frequency-selective phase-shifting device, in which a phase-shifting gear is fixedly provided on a transmission screw of a frequency-selective mechanism, and the transmission screw is driven to move along its axial direction by an active gear, so that the phase-shifting gear can move to the position of any one of the phase-shifting racks corresponding to a plurality of frequency bands arranged in parallel and mesh with it, that is, the phase-shifting rack corresponding to an antenna of a certain frequency band is selected; in addition, the transmission screw is simultaneously driven by the driving gear of the phase-shifting mechanism and the active gear of the frequency-selective mechanism to rotate only in the circumferential direction, so that the phase-shifting gear drives the phase-shifting rack meshed with it to move, so as to perform a phase adjustment operation on the antenna of the frequency band corresponding to the phase-shifting rack. Therefore, the purpose of controlling the phase shifting of antenna frequency band signals corresponding to a plurality of phase-shifting racks is achieved. The present invention also provides a multi-frequency antenna including the above-mentioned frequency-selective phase-shifting device.
Description
Technical Field
The invention belongs to the technical field of mobile communication, and particularly relates to a multi-frequency antenna and a frequency-selecting phase-shifting device thereof.
Background
With the increasing number of mobile communication terminal users, the network capacity requirements of stations in a mobile cellular network are increasing, and meanwhile, the interference between different stations and even between different sectors of the same station is required to be minimized, namely, the maximization of the network capacity and the minimization of the interference are realized. This is typically achieved by adjusting the downtilt of the antenna beam at the station.
In two modes of mechanical downtilt and electronic downtilt of adjusting beam downtilt, the electronic downtilt has obvious advantages, and is a current mainstream and a future development trend. The control of the electric downtilt angle is mainly divided into an internal type and an external type, wherein the internal control is the main stream of the current and future.
However, the motors used for driving the phase shifters in the conventional transmission device are still in one-to-one correspondence with the transmission mechanisms of the phase shifters, the number of the motors is not reduced, and the number of driving circuits in the control module is not reduced as much as the number of the motors. If the frequency band of the antenna is further increased, the transmission system structure is more complex and heavy, and the reliability of the multi-frequency antenna is affected.
The applicant has practiced the related technical solutions to the above problems, but there is still room for improvement in stable control and simple operation, especially for the case of more than one control, and the improvement of the related structure is still large.
Disclosure of Invention
The first object of the invention is to provide a frequency-selecting phase-shifting device which is stable in control and simple in operation.
It is another object of the present invention to provide a multi-frequency antenna.
In order to achieve the above object, the present invention provides the following technical solutions:
The invention provides a frequency-selecting phase-shifting device, which comprises phase-shifting racks corresponding to a plurality of frequency bands, a frequency-selecting mechanism for selecting one frequency band under the control of driving moment, and a phase-shifting mechanism for performing phase-shifting control on the selected phase-shifting racks under the control of driving moment, wherein the frequency-selecting mechanism comprises a driving screw axially arranged in parallel with the arrangement direction of the plurality of phase-shifting racks, a driving gear screwed with the driving screw, and a phase-shifting gear fixedly arranged on the driving screw, and the driving gear is used for driving the driving screw to linearly move along the arrangement direction so as to enable the driving screw to drive the phase-shifting gear to be meshed with the phase-shifting rack of any frequency band;
the phase shifting mechanism comprises a driving gear sleeved on the driving screw, and the driving gear is used for driving the driving screw to circumferentially rotate so that the phase shifting gear drives a phase shifting rack meshed with the phase shifting gear to move.
Further, at least one anti-rotation groove is formed in the driving screw, the anti-rotation groove is formed in the driving screw in a penetrating mode along the axial direction of the driving screw, and the inner hole of the driving gear is provided with matched clamping teeth corresponding to the anti-rotation groove.
Further, the cross section of the anti-rotation groove is arc-segment-shaped or regular polygonal or irregular polygonal, and the shape of the cross section of the latch corresponds to the shape of the cross section of the anti-rotation groove.
Further, the central axis of the phase shift gear coincides with the central axis of the driving screw, and the phase shift gear is fixedly sleeved on the driving screw.
Further, the phase shift gear and the transmission screw are integrally formed.
Further, the frequency selecting mechanism further comprises a first motor, the first motor drives the driving gear to rotate through a first gear train, and the phase shifting mechanism further comprises a second motor, and the second motor drives the driving gear to rotate through a second gear train.
Further, the frequency-selecting phase-shifting device further comprises a supporting seat, wherein the supporting seat is used for supporting the phase-shifting rack, the frequency-selecting mechanism and the phase-shifting mechanism.
Further, the two ends of the phase-shifting rack in the length direction are respectively sleeved with a supporting frame, and a channel for the phase-shifting rack to move is formed between the two supporting frames.
Further, the frequency-selecting phase-shifting device is provided with two rows of phase-shifting racks, the two rows of phase-shifting racks are arranged on two sides of the transmission screw in the axial direction, and the two rows of phase-shifting racks are arranged in a staggered mode.
The invention also provides a multi-frequency antenna, which comprises a plurality of phase shifting parts corresponding to a plurality of frequency bands, and is characterized by comprising the frequency selecting and phase shifting device, wherein each phase shifting part is provided with a phase shifting rack corresponding to one frequency selecting and phase shifting device and is in linkage arrangement with the phase shifting rack
Compared with the prior art, the invention has the following advantages:
The invention provides a frequency-selecting phase-shifting device, wherein a phase-shifting gear is fixedly arranged on a driving screw in a frequency-selecting mechanism, the driving screw is driven by a driving gear to move along the axial direction of the driving screw, so that the phase-shifting gear can move to any one position of phase-shifting racks corresponding to a plurality of frequency bands which are arranged side by side in parallel and is meshed with the phase-shifting racks, namely, the phase-shifting rack corresponding to an antenna in a certain frequency band is selected, in addition, the driving gear of the phase-shifting mechanism and the driving gear of the frequency-selecting mechanism simultaneously drive the driving screw to only circumferentially rotate, so that the phase-shifting gear drives the phase-shifting racks meshed with the phase-shifting gear to move, and phase-modulating operation is carried out on the antenna in the frequency band corresponding to the phase-shifting racks. Therefore, the purpose of controlling the phase shift of the antenna frequency band signals corresponding to the plurality of phase shift racks is achieved.
In addition, the frequency-selecting phase-shifting device has the advantages of simple structure, ingenious and reasonable combination of the frequency-selecting mechanism and the moving mechanism, simple operation and stable phase modulation.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of the internal structure of a frequency-selective phase-shifting device provided by the invention;
FIG. 2a is a schematic view of the structure of the drive screw of the present invention;
FIG. 2b is a schematic cross-sectional view of a drive screw according to the present invention;
FIG. 3 is a schematic diagram of a frequency-selective phase shifter according to the present invention;
Fig. 4 is a schematic diagram of a phase-shifting state structure of the frequency-selecting phase-shifting device provided by the invention;
fig. 5 is a schematic diagram of another frequency-selecting state structure of the frequency-selecting phase-shifting device provided by the invention.
Detailed Description
Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the invention is susceptible of embodiment in the drawings, it is to be understood that the invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein, but rather are provided to provide a more thorough and complete understanding of the invention. It should be understood that the drawings and embodiments of the invention are for illustration purposes only and are not intended to limit the scope of the present invention.
The term "including" and variations thereof as used herein are intended to be open-ended, i.e., including, but not limited to. The term "coupled" may be either directly or indirectly through intervening components (elements). The term "one embodiment" means "at least one embodiment," another embodiment "means" at least one additional embodiment, "and" some embodiments "means" at least some embodiments. Related definitions of other terms will be given in the description below.
It should be noted that the terms "first," "second," and the like herein are merely used for distinguishing between devices, modules, or units and not necessarily for defining the order in which such devices, modules, or units perform their functions or are interdependent.
The invention provides an antenna frequency-selecting phase-shifting device which is used for realizing phase modulation control of any frequency band signal in a multi-frequency antenna. As shown in fig. 1, the frequency-selecting phase-shifting device includes a phase-shifting rack 1 corresponding to a plurality of frequency bands arranged side by side, a frequency-selecting mechanism 2 for selecting one of the frequency bands of the phase-shifting rack 1 under the control of a driving torque, and a phase-shifting mechanism 3 for performing phase-shifting control on the selected phase-shifting rack 1 under the control of the driving torque.
The frequency selecting mechanism 2 comprises a driving screw 21 axially parallel to the arrangement direction of the plurality of phase shifting racks 1, a driving gear 22 screwed with the driving screw 21, and a phase shifting gear 23 fixedly arranged on the driving screw 21.
As shown in fig. 2a, at least one anti-rotation groove 210 is provided on the drive screw 21, and the anti-rotation groove 210 penetrates from an end portion of one end of the drive screw 21 to an end portion of the other end of the drive screw 21 along an axial direction of the drive screw 21. As shown in fig. 2b, the anti-rotation groove 210 has a cross section with an arc segment shape or a regular polygonal shape or an irregular polygonal shape. In the embodiment shown in the drawings, two anti-rotation grooves 210 are symmetrically arranged on two sides of the central axis of the driving screw 21. In other embodiments, the anti-rotation slots 210 may be three or one, and are not limited to the embodiments shown in the drawings.
The central axis of the phase shift gear 23 coincides with the central axis of the drive screw 21, and the phase shift gear 23 is fixedly sleeved on the drive screw 21. In this embodiment, only one phase shift gear 23 is provided, and is fixedly sleeved at the end of the driving screw 21. The phase shift gear 23 and the drive screw 21 may be integrally formed, or may be fixedly disposed at one end of the drive screw 21 as a fitting.
The driving gear 22 is sleeved on the driving screw 21. The gear hole of the driving gear 22 is a threaded hole, and the threaded hole is matched with the driving screw 21, so that the driving gear 22 and the driving screw 21 form a driving screw mechanism. When the driving gear 22 rotates circumferentially, the driving screw 21 is driven to move linearly back and forth along the arrangement direction of the phase shift racks 1 without rotating circumferentially, so that the phase shift gear 23 moves between the positions of the phase shift racks 1 corresponding to each frequency band. And the phase shift gear 23 can be meshed with the phase shift rack 1 corresponding to any frequency band, and when the phase shift gear 23 moves to the target phase shift rack 1 and is meshed with the target phase shift rack 1, the driving of the driving screw 21 is stopped, so that the phase shift gear 23 can select the phase shift rack 1 corresponding to the target frequency band antenna.
The phase shifting mechanism 3 comprises a driving gear 31 which is sleeved on the driving screw 21 and is arranged at the same end with the driving gear 22. The hole of drive gear 31 is the round hole, so that wear to establish drive screw 21 of drive gear's hole can not drive gear 31 rectilinear motion, set up on the hole of drive gear 31 with drive screw 21 prevent changeing groove 210 quantity and shape assorted latch, when drive gear 31 cup joints in drive screw 21, drive gear 31 hole's latch is put into drive screw 21 prevent changeing groove 210, makes drive gear 31 and drive screw 21 can the joint, when rotating drive gear 31, drive screw 21 is with drive gear 31 to the syntropy rotation. Since the anti-rotation groove 210 penetrates from the end of one end of the drive screw 21 to the other end of the drive screw 21 along the axial direction of the drive screw 21, when the driving gear 22 rotates and the driving gear 31 does not rotate, the drive screw 21 is clamped and circumferentially fixed with the driving gear 31 through the anti-rotation groove 210, so that the process of linearly moving the drive screw 21 along the arrangement direction of the phase shift racks 1 is ensured not to circumferentially rotate. When the drive screw 21 moves linearly, the latch of the inner hole of the driving gear 31 moves relatively from one end of the anti-rotation slot 210 to the other end, so that the latch of the driving gear 31 does not block the linear motion of the drive screw 21, and the drive screw 21 does not drive the drive 31 to move linearly.
The driving gear 31 is further configured to drive the driving screw 21 to rotate circumferentially in the same direction, so that the phase shift gear 23 drives the phase shift rack 1 meshed with the driving screw to move up and down (the upward direction or the downward direction mentioned in the present invention are opposite directions, which is only convenient for understanding the core of the present invention in combination with the accompanying drawings, and is not a limitation of the technical solution of the present invention). Specifically, when the spur gear 23 is moved to the target spur rack 1, the spur gear 23 is engaged with the target spur rack 1, and the spur gear 23 needs to perform a circumferential movement to drive the target spur rack 1 to move upward or downward. I.e. the drive screw 21 does not move axially but at the same time moves circumferentially. Since the driving gear 22 and the driving screw 21 form a driving screw mechanism, when the driving gear 31 drives the driving screw 21 to do circumferential motion, the driving gear 22 is rotated in the same direction, so that the driving gear 22 and the driving screw 21 rotate in the same direction. Since the driving gear 22 and the driving screw 21 do not rotate in opposite directions, the driving screw 21 does not move axially relative to the driving gear 22, so that the phase shift gear 23 can be fixed at the position of the target phase shift rack 1 to rotate circumferentially, and the phase shift rack 1 is driven to move correspondingly.
The phase shift rack1 is respectively connected with phase shift components (not shown in the drawing) of phase shifters of different frequency bands, so that the phase shift component displacement of the phase shifter of the corresponding frequency band can be controlled by controlling the rotation direction and the rotation number of the phase shift gear 23, and further controlling the movement direction and the displacement of the phase shift rack1, so as to achieve the purpose of controlling the phase modulation of the phase shifter of the frequency band.
The frequency selecting mechanism 2 further comprises a first motor 24 and a first gear train 25 fixedly connected with the first motor 24. The first gear train 25 includes one or more gears that cooperate to transfer the drive torque of the first motor 24 to the drive gear 22. When the first motor 24 drives the first gear train 25 to rotate, the first gear train 25 drives the driving gear 22 to rotate in the opposite direction, that is, the first motor 24 drives the driving gear 22 to rotate through the first gear train 25.
The phase shifting mechanism 3 further comprises a second motor 32, and a second gear train 33 fixedly connected with the second motor 32. The second gear train 33 includes one or more gears that cooperate to transmit the driving torque of the second motor 32 to the driving gear 31. When the second motor 32 drives the second gear train 33 to rotate, the second gear train 33 drives the driving gear 31 to rotate in the opposite direction, that is, the second motor 32 drives the driving gear 31 to rotate through the second gear train 33.
The two ends of the phase-shifting rack 1 in the length direction are respectively sleeved with a supporting frame 4 so as to support the phase-shifting rack. Meanwhile, the phase shift rack 1 can move back and forth on the support frames 4 along the length direction of the phase shift rack 1, and a channel for the phase shift rack 1 to move is formed between the two support frames 4.
The frequency-selecting phase-shifting device also comprises a supporting seat, wherein the supporting seat is used for supporting the phase-shifting rack 1, the frequency-selecting mechanism 2 and the phase-shifting mechanism 3.
The basic design principle of the frequency-selective phase-shifting device is further explained below by means of an operational embodiment of the frequency-selective phase-shifting device.
Referring to fig. 1, the phase shift gear 23 is set to be in an initial state at a position other than the first phase shift rack 1. The initial state is only the reference state of the operation, and can be set according to specific situations. Setting that the current operation needs to perform phase modulation on the antenna of the frequency band corresponding to the third phase shift rack 1, wherein the phase shift component is used as a target phase shift rack 1A of the current operation. The forward rotation or reverse rotation referred to in the present invention is a relative concept and is not intended as a limitation on the inventive core of the present invention.
First, the phase shift gear 23 is moved to a position corresponding to the target phase shift rack 1A:
The second motor 32 is not driven, but only the first motor 24 is driven to rotate in the forward direction, and the driving gear 22 is driven to rotate in the reverse direction through the first gear train 25. The driving gear 22 further drives the drive screw 21, which constitutes a drive screw mechanism therewith, to move linearly in the axial direction through the inner bore of the drive gear 31. The drive screw 21 drives the phase shift gear 23 fixed at the end portion thereof to move in the same direction until the phase shift gear 23 is engaged with the target phase shift rack 1A, as shown in fig. 3, and the driving of the first motor 24 is stopped. The operation step can select the phase shift rack 1 of the corresponding frequency band of the frequency selecting and phase shifting device so as to carry out phase modulation on the antenna of the frequency band in the next step.
Secondly, phase modulation control is performed on the target phase shift rack 1A:
The driving of the second motor 32 in either forward or reverse rotation is determined according to the phase modulation requirement, i.e., whether the target rack 1A is required to be moved up or down. When the second motor 32 is set to rotate in the forward direction, the rack 1 is moved downward. The second motor 32 is driven to rotate forward, the second gear train 33 drives the driving gear 31 to rotate reversely, the first motor 24 is driven to rotate forward, the first gear train 25 drives the driving gear 22 to rotate reversely, and the driving screw 21 and the driving gear 22 rotate reversely at the same time, so that the axial direction of the driving screw 21 keeps static and only rotates reversely in the circumferential direction, thereby driving the phase shift gear 23 to rotate reversely in the target phase shift rack 1A and driving the target phase shift rack 1A to move downwards. When the displacement of the target phase shift rack 1A moving downward satisfies the displacement amount required to move the antenna tuning amount of the corresponding frequency band, as shown in fig. 4, the driving of the first motor 24 and the second motor 32 is stopped at the same time.
Then, the initial state is restored.
Only the first motor 24 is driven to reversely rotate, the driving screw 21 is driven to drive the phase shift gear 23 to gradually separate from the target phase shift rack 1A until the target phase shift rack moves to the initial state, and the driving of the first motor 24 is stopped. The phase shift gear 23 is disengaged from the target phase shift rack 1A and returned to the original state to avoid unnecessary phase shift actions of the target phase shift rack 1A and other phase shift racks 1 due to operational errors or other reasons.
Of course, before the initial state is restored, if the phase modulation is continued for the antennas of other frequency bands, as shown in fig. 5, the target phase shift component is the last phase shift rack 1B, the above operation is repeated, the phase shift gear 23 moves to the last phase shift rack 1B and is meshed with the last phase shift rack, and the phase shift rack is moved up or down according to the phase modulation requirement of the corresponding antenna of the phase shift rack. The frequency-selecting phase-shifting device can be restored to an initial state, then the next target phase-shifting rack 1B is subjected to phase shifting operation, and the operation sequences can be flexibly operated according to specific requirements on the premise of not deviating from the core technology of the invention, so that the invention is not limited.
In the embodiment shown in the drawings of the present invention, the plurality of phase shifting racks 1 are arranged on the same side in the axial direction of the driving screw 21, and in other embodiments, the frequency-selecting phase shifting device may further be provided with two rows of phase shifting racks 1, where the two rows of phase shifting racks are arranged on two sides in the axial direction of the driving screw 21, and the two rows of phase shifting racks are arranged in a staggered manner, so that the phase shifting gear 23 can only mesh with one phase shifting rack 1 of one row of phase shifting racks at a time. The number of the phase shift racks 1 can be set according to the specific requirements of the antenna frequency-selecting phase shift device, and is not limited herein.
In the above embodiment, the frequency-selecting phase-shifting device is provided with only one phase-shifting gear 23, and in other embodiments, two phase-shifting gears 23 may be further provided on the driving screw 21, where the two phase-shifting gears 23 share the driving screw 21, and only one phase-shifting gear 23 meshes with the phase-shifting rack 1 at a time. In this connection, the skilled person can flexibly change different embodiments according to the inventive spirit of the present invention, and the descriptions are omitted.
The invention also provides a multi-frequency antenna, which comprises a plurality of phase shifting parts corresponding to a plurality of frequency bands, and the frequency selecting phase shifting device, wherein each phase shifting part is provided with a phase shifting rack 1 corresponding to one frequency selecting phase shifting device and is connected with the phase shifting rack, so that the multi-frequency antenna has the function of controlling the phase modulation of any frequency band signal.
In summary, the frequency-selecting phase-shifting device for phase modulation is optimized, the structure is simple, phase modulation control of any frequency band signal in the multi-frequency antenna can be realized more stably and more simply, and the requirements of increasing the frequency band of the antenna, simultaneously, the frequency-selecting phase-shifting device is simple and light in structure, and improving the reliability of the multi-frequency antenna are met.
The above description is only illustrative of the preferred embodiments of the present invention and of the principles of the technology employed. It will be appreciated by persons skilled in the art that the scope of the invention referred to in the present invention is not limited to the specific combinations of the technical features described above, but also covers other technical features formed by any combination of the technical features described above or their equivalents without departing from the inventive concept described above. Such as the above-mentioned features and the features having similar functions (but not limited to) of the invention.
Claims (9)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111584374.9A CN114221130B (en) | 2021-12-23 | 2021-12-23 | Multi-frequency antenna and frequency-selective phase-shifting device thereof |
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| CN202111584374.9A CN114221130B (en) | 2021-12-23 | 2021-12-23 | Multi-frequency antenna and frequency-selective phase-shifting device thereof |
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| CN114221130A CN114221130A (en) | 2022-03-22 |
| CN114221130B true CN114221130B (en) | 2025-02-07 |
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| CN115020945B (en) * | 2022-06-22 | 2024-04-16 | 京信通信技术(广州)有限公司 | Multi-frequency antenna and frequency-selecting phase-shifting module thereof |
| CN116073583B (en) * | 2023-03-07 | 2023-07-14 | 中兴通讯股份有限公司 | Electric tuning antenna downward inclination angle adjusting device and electric tuning antenna system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207559071U (en) * | 2017-11-07 | 2018-06-29 | 罗森伯格技术（昆山）有限公司 | A kind of antenna phasing unit transmission device |
| CN109755747A (en) * | 2017-11-07 | 2019-05-14 | 罗森伯格技术（昆山）有限公司 | An antenna phase shifter transmission device |
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| CN211605413U (en) * | 2019-12-31 | 2020-09-29 | 京信通信技术(广州)有限公司 | Antenna, transmission device and switching mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207559071U (en) * | 2017-11-07 | 2018-06-29 | 罗森伯格技术（昆山）有限公司 | A kind of antenna phasing unit transmission device |
| CN109755747A (en) * | 2017-11-07 | 2019-05-14 | 罗森伯格技术（昆山）有限公司 | An antenna phase shifter transmission device |
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