CN111262029A - Beam control system and method of multi-beam antenna and mobile communication system - Google Patents
Beam control system and method of multi-beam antenna and mobile communication system Download PDFInfo
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- CN111262029A CN111262029A CN202010074550.3A CN202010074550A CN111262029A CN 111262029 A CN111262029 A CN 111262029A CN 202010074550 A CN202010074550 A CN 202010074550A CN 111262029 A CN111262029 A CN 111262029A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
- H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
- H01Q1/523—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between antennas of an array
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/0006—Particular feeding systems
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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
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Abstract
The application discloses a beam control system, a method and a mobile communication system of a multi-beam antenna, comprising: the lower beam feed network is used for feeding first polarization of all radiation units in a first row of the radiation unit array and second polarization of all radiation units in a last row of the radiation unit array; the horizontal direction beam feeding network is used for feeding the first polarization and the second polarization of all the radiating elements from the second column to the second last column of the radiating element array; and is also used to feed the second polarization of all the radiating elements in the first column of the radiating element array and the first polarization of all the radiating elements in the last column of the radiating element array. The method and the device can strengthen the anti-interference capability between polarizations of lower beams, avoid the problem of horizontal plane deformation caused by antenna array interference when the lower beams cover at a large downward inclination angle, simultaneously do not influence the forming feed of horizontal three beams, ensure that the horizontal lobe width index is qualified, and reduce the influence on the beam coverage range.
Description
Technical Field
The present invention relates to the field of mobile communications, and in particular, to a beam control system and method for a multi-beam antenna, and a mobile communication system.
Background
In the coverage of mobile communication networks, multiple arrays and multiple beam antennas are required due to the coverage of some special scenes. The multi-beam antenna can comprise a horizontal left beam, a horizontal middle beam and a horizontal right beam, and a large downtilt adjustable lower beam (the electrical downtilt is adjustable at 13-19 degrees), and the total number of the beams is four. Conventional feeding scheme referring to fig. 1, the leftmost column of radiating elements is used to form a lower beam, and all the remaining radiating elements are used to form three horizontal beams, i.e., left, middle, and right. When two rows of radiation units at the edge of the multi-beam antenna are electrically declined by ten degrees, the coverage change of a horizontal directional diagram is not large, when the large declination angle is covered (the declination angle exceeds 10 degrees), the polarization of each radiation unit is shaped and fed according to the scheme in the prior art, one polarization of the radiation unit in the leftmost row can be influenced by the radiation unit on the right side, as shown in fig. 2, the horizontal directional diagram has the problem of serious deformation, and the deformation is more serious along with the increase of the declination angle, so that the horizontal lobe width index is unqualified, and the beam coverage range is seriously influenced.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a beam control system and method of a multi-beam antenna and a mobile communication system, which can enhance the anti-interference capability between polarizations of lower beams, avoid the problem of horizontal plane deformation caused by antenna array interference when the lower beams cover at a large downward inclination angle, simultaneously, the application does not influence the forming feed of horizontal three beams, ensure that the horizontal lobe width index is qualified, and reduce the influence on the beam coverage range.
To solve the above technical problem, the present application provides a beam control system of a multi-beam antenna, including: the antenna comprises a radiating element array, a lower beam feed network and a horizontal direction beam feed network, wherein:
the lower beam feed network is used for feeding first polarization of all radiation elements in a first column of the radiation element array and second polarization of all radiation elements in a last column of the radiation element array; the first polarization feed circuit is also used for feeding second polarization of all the radiation elements in the first column of the radiation element array and first polarization of all the radiation elements in the last column of the radiation element array;
the horizontal direction beam feed network is used for feeding first polarization and second polarization of all the radiation units from the second column to the second last column of the radiation unit array;
wherein the first polarization is positive polarization and the second polarization is negative polarization, or the first polarization is negative polarization and the second polarization is positive polarization.
Preferably, the beam steering system further includes:
and the beam forming network is used for controlling the amplitude and the phase of the horizontal direction and the vertical direction of the radiating element array so as to form a beam in the corresponding direction.
Preferably, the beam forming network is a butler matrix-based beam forming network.
Preferably, the beam forming network comprises a phase shifter for adjusting a down beam electrical downtilt angle.
In order to solve the above technical problem, the present application further provides a beam control method of a multi-beam antenna, applied to the beam control system according to any one of the above, the beam control method including:
feeding first polarization of all radiation units in a first row of a radiation unit array and second polarization of all radiation units in a last row of the radiation unit array through a lower beam feed network;
feeding first polarization and second polarization of all radiation units from the second column to the second last column of the radiation unit array, second polarization of all radiation units from the first column of the radiation unit array and first polarization of all radiation units from the last column of the radiation unit array through a horizontal direction beam feed network;
wherein the first polarization is positive polarization and the second polarization is negative polarization, or the first polarization is negative polarization and the second polarization is positive polarization.
Preferably, the beam steering method further includes:
and controlling the amplitude and the phase of the horizontal direction and the vertical direction of the radiating element array through a beam forming network so as to form beams in corresponding directions.
Preferably, the beam forming network is a butler matrix-based beam forming network.
To solve the above technical problem, the present application further provides a mobile communication system including the beam steering system of the multi-beam antenna according to any one of the above.
The application provides a beam control system of multi-beam antenna, will be used for forming two polarization separated feeds of beam down, the interval is far away, and the interference killing feature between the polarization is strengthened, avoids when big angle of declination covers, arouses the problem of horizontal plane deformation because of antenna array interference, and the shape feed of three wave beams of level is not influenced in this application simultaneously, guarantees that the wide index of horizontal lobe is qualified, reduces the influence to beam coverage. The application also provides a beam control method of the multi-beam antenna and a mobile communication system, which have the same beneficial effects as the beam control system.
Drawings
In order to more clearly illustrate the embodiments of the present application, the drawings needed for the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a radiation unit array in the prior art;
FIG. 2 is a horizontal plane pattern of a lower beam in the prior art;
fig. 3 is a schematic structural diagram of a beam steering system of a multi-beam antenna provided in the present application;
fig. 4 is a schematic structural diagram of an array of radiating elements provided in the present application;
FIG. 5 is a horizontal plane pattern of a lower beam as provided herein;
fig. 6 is a flowchart illustrating steps of a beam steering method for a multi-beam antenna according to the present application.
Detailed Description
The core of the application is to provide a beam control system and method of a multi-beam antenna and a mobile communication system, which can strengthen the anti-interference capability between polarizations of lower beams, avoid the problem of horizontal plane deformation caused by antenna array interference when the lower beams cover at a large downward inclination angle, simultaneously, the application does not influence the forming feed of horizontal three beams, ensure that the horizontal lobe width index is qualified, and reduce the influence on the beam coverage range.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a beam control system of a multi-beam antenna provided in the present application, the beam control system includes a lower beam feeding network 1, a radiating element array 2 and a horizontal beam feeding network 3, wherein:
a lower beam feeding network 1, configured to feed first polarizations of all radiation elements in a first column of the radiation element array 2 and second polarizations of all radiation elements in a last column of the radiation element array 2;
a horizontal direction beam feed network 3 for feeding the first polarization and the second polarization of all the radiation elements from the second column to the second last column of the radiation element array 2; the first polarization feed circuit is also used for feeding the second polarization of all the radiation elements in the first column of the radiation element array 2 and the first polarization of all the radiation elements in the last column of the radiation element array 2;
wherein the first polarization is positive polarization and the second polarization is negative polarization, or the first polarization is negative polarization and the second polarization is positive polarization.
Specifically, referring to fig. 4, fig. 4 is a schematic structural diagram of a radiation element array 2 provided by the present application, each radiation element includes a positive 45 ° polarization and a negative 45 ° polarization, where the white polarization is used for radiation of a lower beam (an electrical downtilt is adjustable at 13-19 °), the black polarization is used for radiation of a horizontal beam, and the horizontal beam includes horizontal beams in left, middle, and right directions.
It can be understood that, in order to avoid the horizontal plane distortion of the lower beam at a large downtilt angle, the present application utilizes two columns of radiation units on the left and right sides of the multibeam antenna, and uses one polarization of the leftmost column of radiation units and one polarization of the rightmost column of radiation units, which are symmetric, as the radiation of the lower beam, specifically, the positive 45 ° polarization of the leftmost column of radiation units and the negative 45 ° polarization of the rightmost column of radiation units can be used as the radiation of the lower beam, that is, the polarization of white in fig. 4, and all the other polarizations are used as the radiation of the horizontal beam, that is, the polarization of black in fig. 4, and it can be seen with reference to fig. 4 that the two polarizations used as the lower beam are far apart, so that the isolation between polarizations is improved, and the. The polarization feed for the lower beam radiation is realized through the lower beam feed network 1, and the polarization feed for the horizontal beam radiation is realized through the horizontal direction beam feed network 3.
Referring to fig. 5, fig. 5 is a horizontal plane directional diagram of a lower beam after the feeding scheme provided by the present application is adopted, and comparing fig. 2 with fig. 5, it is not difficult to see that the problem of lower beam horizontal lobe width deformation can be solved by adopting the scheme of the present application, in a multi-beam antenna of a 5G large-scale array antenna, the present application separately feeds positive and negative 45 ° polarizations in a radiation unit array 2, reasonably distributes the polarizations, and respectively applies to different beams, so that coupling interference of an antenna surface can be avoided, the structure is simple, and the hardware cost of the antenna is not increased.
The application provides a beam control system of multi-beam antenna, will be used for forming two polarization separated feeds of beam down, the interval is far away, and the interference killing feature between the polarization is strengthened, avoids when big angle of declination covers, arouses the problem of horizontal plane deformation because of antenna array interference, and the shape feed of three wave beams of level is not influenced in this application simultaneously, guarantees that the wide index of horizontal lobe is qualified, reduces the influence to beam coverage.
On the basis of the above-described embodiment:
as a preferred embodiment, the beam steering system further includes:
and the beam forming network is used for controlling the amplitude and the phase of the horizontal direction and the vertical direction of the radiation element array 2 so as to form beams in corresponding directions.
As a preferred embodiment, the beam forming network is a butler matrix based beam forming network.
As a preferred embodiment, the beam forming network comprises phase shifters for adjusting the downtilt angle of the down beam.
Specifically, the amplitude and phase of the radiation element array 2 in the horizontal direction and the vertical direction are controlled by the beam forming network, that is, the radiation element array 2 can be controlled to form a beam in a corresponding direction, and specifically, the direction of the beam can be controlled by the butler matrix. Further, the adjustment of the down beam electrical downtilt angle may be achieved by a phase shifter.
Referring to fig. 6, fig. 6 is a beam steering method of a multi-beam antenna applied to the beam steering system of any one of the above embodiments, the beam steering method includes:
s101: feeding first polarization of all radiation units in a first row of the radiation unit array and second polarization of all radiation units in a last row of the radiation unit array through a lower beam feed network;
s102: feeding first polarization and second polarization of all radiation units from the second row to the second last row of the radiation unit array, second polarization of all radiation units from the first row of the radiation unit array and first polarization of all radiation units from the last row of the radiation unit array through a horizontal direction beam feed network;
wherein the first polarization is positive polarization and the second polarization is negative polarization, or the first polarization is negative polarization and the second polarization is positive polarization.
The two polarizations used for forming the lower beam are separately fed, the distance is far, the anti-interference capability between the polarizations is enhanced, the problem of horizontal plane deformation caused by antenna array interference when the large downtilt angle is covered is avoided, and meanwhile, the forming feed of the horizontal three beams is not influenced, so that the qualification of the horizontal lobe width index is ensured, and the influence on the beam coverage range is reduced.
As a preferred embodiment, the beam steering method further includes:
the amplitude and phase of the horizontal direction and the vertical direction of the radiating element array are controlled by the beam forming network so as to form beams in corresponding directions.
As a preferred embodiment, the beam forming network is a butler matrix based beam forming network.
As a preferred embodiment, the beam forming network comprises phase shifters for adjusting the downtilt angle of the down beam.
In another aspect, the present application further provides a mobile communication system including the beam steering system of the multi-beam antenna as described in any one of the above embodiments.
For an introduction of a mobile communication system provided in the present application, please refer to the above embodiments, which are not described herein again.
The mobile communication system provided by the application has the same beneficial effects as the beam control system of the multi-beam antenna.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. A beam steering system for a multi-beam antenna, comprising: the antenna comprises a radiating element array, a lower beam feed network and a horizontal direction beam feed network, wherein:
the lower beam feed network is used for feeding first polarization of all radiation elements in a first column of the radiation element array and second polarization of all radiation elements in a last column of the radiation element array;
the horizontal direction beam feed network is used for feeding first polarization and second polarization of all the radiation units from the second column to the second last column of the radiation unit array; the first polarization feed circuit is also used for feeding second polarization of all the radiation elements in the first column of the radiation element array and first polarization of all the radiation elements in the last column of the radiation element array;
wherein the first polarization is positive polarization and the second polarization is negative polarization, or the first polarization is negative polarization and the second polarization is positive polarization.
2. The beam steering system of claim 1, further comprising:
and the beam forming network is used for controlling the amplitude and the phase of the horizontal direction and the vertical direction of the radiating element array so as to form a beam in the corresponding direction.
3. The beam steering system for the multi-beam antenna of claim 2, wherein the beam forming network is a Butler matrix based beam forming network.
4. The beam steering system for the multi-beam antenna of claim 2, wherein the beam forming network includes phase shifters for adjusting downtilt angles of lower beam power.
5. A beam steering method of a multi-beam antenna, applied to the beam steering system according to any one of claims 1 to 4, the beam steering method comprising:
feeding first polarization of all radiation units in a first row of a radiation unit array and second polarization of all radiation units in a last row of the radiation unit array through a lower beam feed network;
feeding first polarization and second polarization of all radiation units from the second column to the second last column of the radiation unit array, second polarization of all radiation units from the first column of the radiation unit array and first polarization of all radiation units from the last column of the radiation unit array through a horizontal direction beam feed network;
wherein the first polarization is positive polarization and the second polarization is negative polarization, or the first polarization is negative polarization and the second polarization is positive polarization.
6. The beam steering method of claim 5, further comprising:
and controlling the amplitude and the phase of the horizontal direction and the vertical direction of the radiating element array through a beam forming network so as to form beams in corresponding directions.
7. The beam steering method of claim 6, wherein the beam forming network is a Butler matrix based beam forming network.
8. A mobile communication system comprising the beam steering system of the multi-beam antenna of any one of claims 1-4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010074550.3A CN111262029B (en) | 2020-01-22 | 2020-01-22 | Beam control system and method of multi-beam antenna and mobile communication system |
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| CN202010074550.3A CN111262029B (en) | 2020-01-22 | 2020-01-22 | Beam control system and method of multi-beam antenna and mobile communication system |
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| CN111262029A true CN111262029A (en) | 2020-06-09 |
| CN111262029B CN111262029B (en) | 2021-08-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025011506A1 (en) * | 2023-07-12 | 2025-01-16 | 中天通信技术有限公司 | Dual-beam antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025011506A1 (en) * | 2023-07-12 | 2025-01-16 | 中天通信技术有限公司 | Dual-beam antenna |
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Effective date of registration: 20221012 Address after: No.86, Qixin Road, Nantong Development Zone, Jiangsu Province, 226000 Patentee after: Zhongtian Communication Technology Co.,Ltd. Patentee after: ZHONGTIAN BROADBAND TECHNOLOGY Co.,Ltd. Patentee after: ZHONGTIAN TECHNOLOGY INDUSTRIAL WIRE&CABLE SYSTEM Co.,Ltd. Patentee after: JIANGSU ZHONGTIAN TECHNOLOGY Co.,Ltd. Address before: No.86, Qixin Road, Nantong Development Zone, Jiangsu Province, 226000 Patentee before: Zhongtian Communication Technology Co.,Ltd. Patentee before: ZHONGTIAN BROADBAND TECHNOLOGY Co.,Ltd. Patentee before: JIANGSU ZHONGTIAN TECHNOLOGY Co.,Ltd. |
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Denomination of invention: Beam control system, method and mobile communication system of a multi beam antenna Effective date of registration: 20221010 Granted publication date: 20210810 Pledgee: Rudong sub branch of Bank of China Ltd. Pledgor: ZHONGTIAN BROADBAND TECHNOLOGY Co.,Ltd. Registration number: Y2022980017823 |