CN109509995A - A kind of mixing multibeam antenna - Google Patents
A kind of mixing multibeam antenna Download PDFInfo
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- CN109509995A CN109509995A CN201811628000.0A CN201811628000A CN109509995A CN 109509995 A CN109509995 A CN 109509995A CN 201811628000 A CN201811628000 A CN 201811628000A CN 109509995 A CN109509995 A CN 109509995A
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- 230000005855 radiation Effects 0.000 claims description 12
- 238000004891 communication Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 abstract description 3
- 238000010295 mobile communication Methods 0.000 description 5
- 230000005465 channeling Effects 0.000 description 3
- 230000000747 cardiac effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/30—Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
-
- 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
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of mixing multibeam antenna, including reflecting plate and it is mounted on reflecting plate, mutually nested low frequency antenna array, high frequency conventional antenna array and high frequency two-beam antenna array；Wherein low frequency antenna array, high frequency conventional antenna array and high frequency two-beam antenna array separately constitute low frequency single beam antenna system, high frequency single beam antenna system and two-beam antenna system.Wherein low frequency single beam antenna system and high frequency single beam antenna system can solve signal covering problem, high frequency two-beam antenna system can solve off-capacity problem, and dualbeam radiating element subarray is by the way of mutually staggering, the dualbeam directional diagram that good horizontal side lobe inhibits can be obtained, the interference to neighboring community is effectively reduced.The antenna exists simultaneously the system of multiple and different frequency ranges, and compatible a variety of communication standards improve network capacity, save site resource, reduce number of antennas.
Description
Technical field
The present invention relates to fields of communication technology, and in particular to a kind of mixing multibeam antenna.
Background technique
With the fast development of mobile Internet, the data traffic in mobile communications network is increased sharply, to Mobile communication bandwidth
Capacity generates immense pressure, region especially intensive in user.Such as the large-scale square in urban district, transport hub, open body
Venue, colosseum shop, literature and art joint performance venue, tourist attractions, university dormitory housing-group etc. are educated, the data traffic in these regions is huge
Greatly, the needs of bandwidth capacity of mobile communications network is difficult to meet image and video traffic in mobile Internet at present, influences to use
Family networking speed and experience.For extended network capacity, traditional scheme increases carrier wave using antenna coverage areas is reduced, but increases
Number of base stations is added, the problem of the siting of station and property coordination, at high cost, capacity boost limitation, it is difficult to meet can be faced
The network capacity requirement of user's close quarters.
On the other hand, currently in order to meeting the requirement in mobile communication to high speed data transfer, domestic and international major operator
It is gaining popularity forth generation (abbreviation 4G) mobile communication technology based on two kinds of standards of TD-LTE and FDD-LTE.So that nowadays, 2G,
3G and 4G LTE network is simultaneously deposited.In order to be compatible with a variety of communication standards, site resource is saved, number of antennas is reduced, makes multiple and different
The system of frequency range exists simultaneously, and needs to be applicable in different communication standards using can solve signal covering problem, while can also be promoted
The mixing multibeam antenna of network capacity.
The Chinese patent of existing Patent No. 201621099895.X proposes a kind of double frequency two-beam antenna, but due to this
Antenna low frequency and high frequency are all dualbeams, therefore antenna width is wider, and volume is larger, and the single beam antenna energy that the frequency range having is traditional
Enough meet its covering to require, therefore needs to develop a kind of miniature antenna for being not only able to satisfy covering but also can solve off-capacity.
Summary of the invention
In view of this, in order to solve the above problem in the prior art, the present invention proposes a kind of mixing multibeam antenna.
The present invention is solved the above problems by following technological means:
A kind of mixing multibeam antenna including reflecting plate and is mounted on reflecting plate, mutually nested low frequency routine
Beam antenna array, high frequency routine wave beam base-station antenna array and high frequency two-beam antenna array；Wherein low frequency antenna array, height
The conventional beam antenna array of frequency and high frequency two-beam antenna array separately constitute conventional low frequency single beam antenna system, high frequency list
Beam antenna system and high frequency two-beam antenna system；The low frequency antenna array includes an at least column low frequency radiating element；Institute
Stating high frequency conventional basestation antennas array includes an at least column high frequency radiating element；The high frequency two-beam antenna array includes at least
Two the first subarrays of high frequency radiating element, and the staggered composition of the adjacent subarray of horizontal direction, each high frequency dualbeam spoke
The first subarray of unit is penetrated by equidistant second group of subarrays arranged in a straight line of two rows into, every row high frequency dualbeam radiating element the
Two subarrays are formed by the high frequency dualbeam radiating element not less than 3 is arranged in a straight line.
Further, the adjacent high frequency radiating element subarray horizontal direction of dualbeam is staggered, the spacing that is staggered be 0.4~
Column pitch between 0.7 times of high frequency dualbeam radiating element.
Further, the column pitch between every row high frequency dualbeam radiating element is equal, and column pitch is half high frequency
Central wavelength.
Further, between the high frequency routine beam radiation unit using arranged in a straight line, line space is equal.
Further, the low frequency base-station antenna array is made of the two equidistant low frequency radiating elements of column, two column low frequencies
Radiating element is respectively formed two independent low-frequency antenna systems, the first low frequency radiating element and other spokes of a low frequency system
It is staggered to penetrate unit horizontal, is placed among two low frequency systems, vertical direction spacing is equal, another low frequency system it is last
One low frequency radiating element and other radiating element offsets arrange, and are placed among two low frequency systems, vertical direction spacing
It is equal.
Further, the line space of the two row high frequency dualbeam radiating elements between two neighboring low frequency radiating element
For the first spacing；Between line space positioned at the adjacent high frequency dualbeam radiating element of the same low frequency radiating element two sides is second
Away from；The sum of first spacing and the second spacing are equal to the line space between low frequency radiating element.
Further, second spacing is greater than the first spacing.
Further, the high frequency routine beam antenna array is made of two column high frequency radiating elements, and two column high frequencies are conventional
Beam radiation unit separately constitutes two independent radio frequency systems, and the column pitch of two radio frequency systems is in 0.7~1.5 times of high frequency
Cardiac wave is long, and the line space of radiating element is equal.
Further, the high frequency routine beam antenna array is made of two column high frequency radiating elements, and two column high frequencies are conventional
Beam radiation unit separately constitutes two independent radio frequency systems, and two column high frequency single beam systems are respectively distributed to high frequency dualbeam
The two sides of system, and in each system radiating element line space it is equal.
Further, the low frequency antenna array working frequency range range is 694~960MHz；High frequency single beam antenna array
Working frequency range range is 1695~2690MHz, and high frequency two-beam antenna array working frequency range range is 1695~2690MHz.
Compared with prior art, beneficial effects of the present invention include at least:
A kind of mixing multibeam antenna of the invention is double by low frequency antenna array, high frequency routine beam antenna array and high frequency
Beam antenna array is nested with one another, and realizes antenna miniaturization.Wherein low frequency routine beam antenna and high frequency routine wave beam base station
Antenna can solve signal covering problem, and high frequency two-beam antenna can solve off-capacity problem, and high frequency dualbeam radiates
The first subarray of unit can obtain the dualbeam directional diagram that good horizontal side lobe inhibits, effectively by the way of mutually staggering
Reduce the interference to neighboring community.The antenna exists simultaneously the system of multiple and different frequency ranges, compatible a variety of communication standards,
Do not increase the channeling for realizing neighboring community under conditions of antenna site and terrace resource, improve network capacity, saves site
Resource reduces number of antennas.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the mixing multi-beam antenna array layout viewing in embodiment one；
Fig. 2 is the mixing multi-beam antenna array layout viewing in embodiment two；
Description of symbols:
1- reflecting plate；2,3,4- low frequency routine beam antenna system radiating element；The radiation of 5- high frequency two-beam antenna system
The second subarray of unit；6- high frequency single beam antenna system radiating element；7,8,9- high frequency single beam antenna system radiating element
Boundary；10- high frequency dualbeam radiating element；11- high frequency two-beam antenna system the first subarray of radiating element.
Specific embodiment
To keep above-mentioned objects, features and advantages of the invention more obvious and easy to understand, below in conjunction with attached drawing and specifically
Embodiment technical solution of the present invention is described in detail.It should be pointed out that described embodiment is only this hair
Bright a part of the embodiment, instead of all the embodiments, based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Embodiment one
Mixing multibeam antenna low frequency antenna array working frequency range range in the present embodiment is 694~960MHz；High frequency
Single beam antenna array working frequency range range is 1695~2690MHz, and high frequency two-beam antenna array working frequency range range is
1695~2690MHz.
As shown in Figure 1, one of the present embodiment mixes multibeam antenna, including reflecting plate 1, and it is mounted on reflection
Low frequency antenna array, high frequency routine wave beam base-station antenna array and high frequency two-beam antenna array on plate 1.Wherein low-frequency antenna
Array, high frequency antenna array and high frequency two-beam antenna array separately constitute low frequency single beam antenna system, high frequency simple beam day
Linear system system and two-beam antenna system, to realize the antenna duplexer reflecting plate and day for working in the not homologous ray of different frequency range
Irdome realizes multisystem covolume design, is conducive to antenna miniaturization, saves installation space.
Wherein low frequency antenna array is mutually nested with high frequency routine beam antenna array, high frequency two-beam antenna array, low
Frequency aerial array is arranged by the equidistant L21 of low frequency radiating element 2, wherein being controlled by first or tail radiating element is staggered
The beam angle of horizontal radiation pattern.Each column low frequency is respectively formed two independent low frequency systems, low frequency radiating element 3 and low frequency
Radiating element 4 is equidistantly arranged in the centre of two column low frequency radiating elements, and wherein low frequency radiating element 3 belongs to high frequency routine wave beam
The low frequency radiating element system of antenna column, low frequency radiating element 4 belong to the low frequency radiation of high frequency two-beam antenna column
Cellular system, high frequency two-beam antenna array is made of five the first subarrays of high frequency radiating element 11, and adjacent high frequency radiation
Unit 11 horizontal directions of the first subarray are staggered；Each high frequency dualbeam radiating element subarray 11 is equidistantly straight by two rows
The second subarray of high frequency radiating element 5 of line arrangement forms, and high frequency routine beam antenna array is by two column high frequency radiating element groups
At each column is formed by ten 6 equidistant d1 of high frequency routine beam radiation unit are arranged in a straight line, and 7,8,9 be high frequency routine wave beam
Radiate boundary.
Each low frequency system is made of five low frequency radiating elements in this example, and total low frequency radiating element number is ten, high
The line number of the conventional wave beam of frequency and high frequency dualbeam radiating element is ten.
The second subarray of every row high frequency dualbeam radiating element 5 is straight by the high frequency dualbeam radiating element 10 not less than three
Line rearranges, this example four.Column pitch d3 between every row high frequency dualbeam radiating element is equal, and column pitch is half
High frequency central wavelength.It is staggered in 11 horizontal direction of the first subarray of adjacent high frequency dualbeam radiating element, it is staggered spacing about
It is 0.4~0.7 times of high frequency dualbeam radiating element column pitch d3 for L1.The line space of adjacent rows high frequency dualbeam radiating element 10
There are two types of:
1, two row high frequency dualbeam radiating elements 10 of the dualbeam between two neighboring low frequency radiating element 2 are in the ranks
Away from for the first spacing d2；
2, dualbeam is located at the row of the adjacent high frequency dualbeam radiating element 10 of same 2 two sides of low frequency radiating element
Spacing is the second spacing d4.
Second spacing d4 is greater than the first spacing d2, makes between low frequency radiating element 2 and high frequency dualbeam radiating element 10
Row distance pulls open as far as possible, to reduce the blocking to high frequency dualbeam radiating element 10 of low frequency radiating element 2.First spacing d2 and
The sum of second spacing d4 is equal to the spacing L21 between low frequency radiating element 2, and two low frequency base station antenna systems are located at reflection
Fig. 1 is shown in the two sides of plate, specific arrangement.
Two column high frequency routine beam radiation units 6 form two high frequency routine beamformer systems, and each column is belonging respectively to a height
The conventional beam antenna system of frequency.The column pitch d5 of two high frequency routine beam antenna systems is cardiac wave in 0.7~1.5 times of high frequency
It is long.
One of the embodiment mixes multibeam antenna, on the basis of antenna miniaturization, realizes ultra-wideband, multifrequency
Section, full frequency band and the advantages of so that network is had both capacity and covering, while can support three kinds of various forms of frequency range (694-
960MHz/1695-2690MHz/1695-2690MHz), exist simultaneously the system of multiple and different frequency ranges, compatible a variety of communication systems
Formula realizes the channeling of neighboring community under conditions of not increasing antenna site and terrace resource, improves network capacity, saves
Site resource reduces number of antennas.
Embodiment two
One of the present embodiment mixing multibeam antenna is wherein in the arrangement of low frequency base-station antenna array and embodiment one
It is identical；High frequency two-beam antenna array center is located on the central axis of bottom plate, point of two column high frequency routine beam antenna arrays
Not Wei Yu dualbeam two sides, and adjacent high frequency dualbeam radiating element 11 horizontal directions of the first subarray are staggered, arrangement
Mode is identical as in embodiment one；Conventional two row high frequency radiating element of wave beam, 6 horizontal direction is specifically shown in Fig. 2 without offset alignment.
The line space of same column high frequency routine beam radiation unit 6 is identical as in embodiment one, the adjacent high frequency radiating element of dualbeam
The spacing that one subarray 11 is staggered is identical as in embodiment one, and dualbeam is between two neighboring low frequency radiating element 3
The line space of two row high frequency dualbeam radiating elements 10 is located at the adjacent of same 3 two sides of low frequency radiating element with dualbeam
The line space of high frequency dualbeam radiating element 10 also meets the relationship in embodiment one.Low frequency routine beam antenna array, high frequency
The center of conventional beam antenna array and high frequency two-beam antenna array be all located at reflecting plate it is central axial on, specific arrangement is shown in
Fig. 2.
A kind of mixing multibeam antenna of the invention is by low frequency routine beam antenna array, high frequency routine beam antenna array
It is nested with one another with high frequency two-beam antenna array, realizes antenna miniaturization, low frequency routine beam antenna and high frequency routine wave beam
Antenna can solve signal covering problem, and high frequency two-beam antenna can solve off-capacity problem, and high frequency dualbeam radiates
The first subarray of unit can obtain the dualbeam directional diagram that good horizontal side lobe inhibits, effectively by the way of mutually staggering
Reduce the interference to neighboring community.The system of the multiple and different frequency ranges of the antenna exists simultaneously, compatible a variety of communication standards, not
The channeling that neighboring community is realized under conditions of increase antenna site and terrace resource, improves network capacity, saves site money
Number of antennas is reduced in source.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention
Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of mixing multibeam antenna, which is characterized in that including reflecting plate and be mounted on reflecting plate, mutually nested
Low frequency antenna array, high frequency conventional antenna array and high frequency two-beam antenna array；Wherein low frequency antenna array, high frequency routine day
Linear array and high frequency two-beam antenna array separately constitute low frequency single beam antenna system, high frequency single beam antenna system and high frequency
Two-beam antenna system；The low frequency antenna array includes an at least column low frequency radiating element；The high frequency conventional antenna array
Including an at least column high frequency radiating element；The high frequency two-beam antenna array includes at least two first subarrays, and horizontal
The staggered composition of the adjacent subarray in direction, each the first subarray of dualbeam is by equidistant second submatrix arranged in a straight line of two rows
Column composition, each second subarray not less than three dualbeam radiating elements are arranged in a straight line by forming.
2. mixing multibeam antenna according to claim 1, which is characterized in that the first subarray of dualbeam horizontal direction is wrong
Begin to rehearse column, and the spacing that is staggered is the column pitch between 0.4~0.7 times of radiating element.
3. mixing multibeam antenna according to claim 1, which is characterized in that the second subarray of two-beam antenna array
Radiating element column pitch it is equal, column pitch be half high frequency central wavelength.
4. mixing multibeam antenna according to claim 1, which is characterized in that the radiation of the high frequency conventional antenna array
Unit is equidistantly arranged along straight line.
5. mixing multibeam antenna according to claim 1, which is characterized in that the low frequency antenna array includes two column etc.
Spacing low frequency radiating element, two column low frequency radiating elements are respectively formed two independent low frequency systems, the head of a low frequency system
A low frequency radiating element and other radiating element offsets arrange, and are placed among two low frequency systems, vertical direction spacing phase
It is arranged Deng, the last one low frequency radiating element of another low frequency system and other radiating element offsets, it is low to be placed in two
Among display system, vertical direction spacing is equal.
6. mixing multibeam antenna according to claim 1, which is characterized in that be located at two neighboring low frequency radiating element it
Between two row high frequency dualbeam radiating elements line space be the first spacing；It is located at the same low frequency radiating element two sides
The line space of adjacent high frequency dualbeam radiating element is the second spacing；The sum of first spacing and the second spacing are equal to low frequency radiation list
Line space between member.
7. mixing multibeam antenna according to claim 6, which is characterized in that second spacing is greater than the first spacing.
8. mixing multibeam antenna according to claim 1, which is characterized in that the high frequency conventional antenna array is by two column
High frequency radiating element composition, two column high frequency radiating elements are respectively formed two high frequency single beam systems, two high frequency simple beam systems
The column pitch of system is 0.7~1.5 times of high frequency central wavelength, and the line space of radiating element is equal.
9. mixing multibeam antenna according to claim 1, which is characterized in that the high frequency conventional antenna array is by two column
High frequency radiating element composition, two column high frequency radiating elements are respectively formed two high frequency single beam systems, two high frequency simple beam systems
System is respectively distributed to the two sides of high frequency binary beam system, and in each system radiating element line space it is equal.
10. mixing multibeam antenna according to claim 1, which is characterized in that low frequency antenna array working frequency range range
For 694~960MHz；High frequency single beam antenna array working frequency range range is 1695~2690MHz, high frequency two-beam antenna battle array
Column working frequency range range is 1695~2690MHz.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811628000.0A CN109509995A (en) | 2018-12-28 | 2018-12-28 | A kind of mixing multibeam antenna |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811628000.0A CN109509995A (en) | 2018-12-28 | 2018-12-28 | A kind of mixing multibeam antenna |
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| CN109509995A true CN109509995A (en) | 2019-03-22 |
Family
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| CN201811628000.0A Pending CN109509995A (en) | 2018-12-28 | 2018-12-28 | A kind of mixing multibeam antenna |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864406A (en) * | 2020-07-29 | 2020-10-30 | 江苏泰科微通讯科技有限公司 | Miniaturized four-low-frequency multi-port base station antenna |
| CN111952721A (en) * | 2020-08-17 | 2020-11-17 | 江苏泰科微通讯科技有限公司 | Multiport base station antenna based on four-column low frequency |
| CN112821082A (en) * | 2021-01-04 | 2021-05-18 | 武汉虹信科技发展有限责任公司 | Antenna with adjustable horizontal lobe width and base station |
| WO2022012021A1 (en) * | 2020-07-15 | 2022-01-20 | 摩比天线技术（深圳）有限公司 | Multi-beam antenna |
| WO2022016460A1 (en) * | 2020-07-23 | 2022-01-27 | 罗森伯格亚太电子有限公司 | Hybrid network antenna |
| CN114447585A (en) * | 2022-01-29 | 2022-05-06 | 京东方科技集团股份有限公司 | Multi-beam antenna, preparation method thereof and communication device |
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| CN108232466A (en) * | 2018-01-09 | 2018-06-29 | 广东博纬通信科技有限公司 | A kind of mixing multibeam antenna |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022012021A1 (en) * | 2020-07-15 | 2022-01-20 | 摩比天线技术（深圳）有限公司 | Multi-beam antenna |
| WO2022016460A1 (en) * | 2020-07-23 | 2022-01-27 | 罗森伯格亚太电子有限公司 | Hybrid network antenna |
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| CN111952721A (en) * | 2020-08-17 | 2020-11-17 | 江苏泰科微通讯科技有限公司 | Multiport base station antenna based on four-column low frequency |
| CN112821082A (en) * | 2021-01-04 | 2021-05-18 | 武汉虹信科技发展有限责任公司 | Antenna with adjustable horizontal lobe width and base station |
| CN112821082B (en) * | 2021-01-04 | 2022-04-19 | 武汉虹信科技发展有限责任公司 | Antenna with adjustable horizontal lobe width and base station |
| CN114447585A (en) * | 2022-01-29 | 2022-05-06 | 京东方科技集团股份有限公司 | Multi-beam antenna, preparation method thereof and communication device |
| CN114447585B (en) * | 2022-01-29 | 2024-03-19 | 京东方科技集团股份有限公司 | Multi-beam antenna, manufacturing method thereof and communication device |
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