CN110416696A - A kind of ultra-wide-band emission unit - Google Patents
A kind of ultra-wide-band emission unit Download PDFInfo
- Publication number
- CN110416696A CN110416696A CN201810386150.9A CN201810386150A CN110416696A CN 110416696 A CN110416696 A CN 110416696A CN 201810386150 A CN201810386150 A CN 201810386150A CN 110416696 A CN110416696 A CN 110416696A
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- oscillator arms
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- wide
- emission unit
- band emission
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- 238000005452 bending Methods 0.000 claims abstract description 28
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 125000006850 spacer group Chemical group 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
Abstract
Present invention discloses a kind of ultra-wide-band emission units, the base station antenna unit includes radiating element, the supporting element and feeder panel for being used to support radiating element, radiating element includes four oscillator arms, every two oscillator arms are symmetricly set on supporting element, feeder panel passes through supporting element and couples with oscillator arms feed, the bending part that there is downward bending to be formed for each side of each oscillator arms.The present invention further realizes miniaturization, the lightweight of antenna for base station in the case where broadening oscillator working frequency range.
Description
Technical field
The present invention relates to a kind of mobile communication fields, are applied to aerial network system, are used as base station more particularly, to one kind
The ultra-wide-band emission unit of antenna.
Background technique
The ultra-wideband antenna communication technology (UWB) typically refer to signal bandwidth greater than 1.5GHz or bandwidth ratio (signal width with
The ratio between centre frequency) it is greater than 25% radio technology.Ultra-wideband antenna is the critical component in super broad band radio communication system,
The performance of antenna will directly affect the performance of whole system.
With the high speed development of mobile communication technology, multifrequency ultra-wideband antenna for base station has become becoming for future antenna development
Gesture, the radiating element quantity in antenna will also be multiplied, therefore equipment vendor and operator are to the size and weight of antenna
Requirement it is increasingly strict, therefore in antenna the components such as radiating element miniaturization, it is light-weighted to become increasingly important.
A kind of ultra-wide-band emission unit is disclosed in the existing Chinese patent literature application No. is CN201610928844.1
And antenna, radiating element include a pair of orthogonal setting dipole, electrode couple be balanced feed balancer, feed core
And feed circuit plate；Each dipole includes a pair of radiating element arm being fixed on feed balancer, wherein radiating element
Arm end two sides downward bending；Entire radiating element arm, feeds balancer, and feed core is co-located on the branch of single injection-molded
It supports on plastic part, the end and feed core end for feeding balancer are welded in jointly on feed circuit plate.
In above patent document, on the one hand since radiating element arm end two sides make by the way of downward bending
Radiating element has broadened the impedance bandwidth and directional diagram bandwidth of unit, so that radiating element is light-weighted while not sacrificial
The electric property of domestic animal radiating element；On the other hand, entire radiating element uses metal plate bending structure, and uses an one-pass molding
Plastic part be supported fixation, guarantee structural strength that is light-weighted while in turn ensuring entire radiating element in this way, thus
Realize the miniaturization and lightweight of radiating element and antenna.
But above-mentioned patent still has following defect: 1, bending unit arm is formed in the two of radiating element arm end
Still there is further improved space in side although having broadened the bandwidth of unit to a certain extent；2, radiating element arm and feed
Balancer integrated design, flexibility are inadequate；3, feed core, balancer, support radiating element arm plastic supporting pieces structure is complicated,
Cause entire radiative unit structure partially complicated, and then oscillator overall weight is caused to aggravate.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, one kind is provided the case where broadening oscillator working frequency range
Under, realize the miniaturization of antenna for base station, light-weighted ultra-wide-band emission unit.
To achieve the above object, the following technical solutions are proposed: a kind of ultra-wide-band emission unit by the present invention comprising radiation is single
Member, the supporting element and feeder panel for being used to support radiating element, the radiating element include four oscillator arms, every two oscillator arms pair
Claim to be arranged on supporting element, the feeder panel passes through supporting element and couples with oscillator arms feed, each side tool of each oscillator arms
The bending part for thering is downward bending to be formed.
Preferably, it is detachably installed between the oscillator arms, supporting element and feeder panel, the supporting element is insulating materials.
Preferably, the supporting element includes four support portions of corresponding four oscillator arms, and the feeder panel sequentially passes through branch
Support part and corresponding oscillator arms are coupled with oscillator arms feed.
Preferably, a coupling part is extended outward in a side of the oscillator arms, the coupling part and corresponding
The limit card slot passed through for feeder panel is equipped on the support portion.
Preferably, the lower end of the coupling part from the bending part of a side of oscillator arms extends outward to form.
Preferably, the oscillator arms also pass through position limiting structure and are limited on corresponding support portion.
Preferably, the position limiting structure includes the limit hole being arranged in oscillator arms and the elasticity limit being arranged on support portion
Position part, a limited step is formed on the elastic spacing one, and the elastic spacing one passes through limited step clamping after limit hole
In oscillator arms.
Preferably, the feeder panel is the cross one another PCB feeder panel of two panels, after intersection the feeder panel upper end formed with
Four oscillator arms corresponding four feeds end, each feed end form a feed protrusion, the feed it is raised according to
The secondary limit card slot on the support portion and coupling part.
Preferably, the mounting portion of reserved installation spacer is additionally provided on the supporting element.
Preferably, the center of the bending part is equipped with mounting post outstanding.
Preferably, the oscillator arms are sheet metal component, and the supporting element is plastic supporting pieces, and the feeder panel is PCB feed
Plate.
Preferably, the oscillator arms are at least rectangular, one of round, diamond shape, fan-shaped vibrator arm.
Preferably, four support portions are integrally in or approximate in butterfly.
Preferably, two panels feeds plate body right-angled intersection.
Preferably, the coupling part and bending part are perpendicular.
Present invention further teaches another technical solutions: a kind of wide frequency antenna, including a metallic reflection plate, the metal
At least two ultra-wide-band emission units are set on reflecting plate.
Preferably, at least one and the ultra-wide-band emission unit co-axial alignment are additionally provided in the metallic reflection plate
Low-frequency vibrator.
The beneficial effects of the present invention are:
1, the feature of downward bending is all arranged in every side of oscillator arms, to the greatest extent in the case where not increasing projected area
The swept area of oscillator arms has been broadened, to reach the characteristic for widening oscillator working frequency range, has reached 75% relative bandwidth；It is based on
75% bandwidth feature, the working frequency range of base station antenna unit of the present invention can be with flexibly adjustment covering 1400-2700MHz or
Person covers 1695-3700MHz.
2, it detachably installs, assembles simple and easy, flexible between oscillator arms, supporting element and feeder panel.
3, thin metal plate oscillator arms, plastic supporting pieces, PCB feeder panel fit structure, oscillator arm configuration is simple, is easy to replace
It changes；Plastic supporting pieces also act the effect of limit bending blade using plastic form while providing secured enabling capabilities,
It not only strengthens the intensity of unit but also provides convenience to assembling；Feeder panel uses the form of PCB feed, has flexibly adjustable
Feature.And three combines that the base station antenna unit structure to be formed is simple, and overall weight is lighter, is readily produced and manufactures, and greatly
Ground reduces production cost.
4, base station antenna unit of the present invention is whole smaller, is easy to antenna for base station miniaturization, and can work independently, also can
With other frequency range Harmonic Oscillators co-axial alignments.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of base station antenna unit of the present invention；
Fig. 2, Fig. 3 are the part configuration schematic diagrams of base station antenna unit of the present invention；
Fig. 4 is the complete configuration schematic diagram of base station antenna unit of the present invention；
Fig. 5 is part (locating part 22) enlarged structure schematic diagram in Fig. 4；
Fig. 6 is part (mounting portion 28) enlarged structure schematic diagram in Fig. 4；
Fig. 7 is the structural schematic diagram of a wherein embodiment wide frequency antenna of the invention.
Appended drawing reference:
1, oscillator arms, 11, bending part, 12, limit hole, 13, coupling part, 14, limit card slot, 2, supporting element, 21, support
Portion, 22, locating part, 23, limited post, 24, gap, 25, limiting section, 26, limited step, 27, limit card slot, 28, mounting post, 3,
Feeder panel, 31, feed plate body, 32, feed end, 33, feed protrusion, 4, metallic reflection plate, 5, low-frequency vibrator.
Specific embodiment
Below in conjunction with attached drawing of the invention, clear, complete description is carried out to the technical solution of the embodiment of the present invention.
In conjunction with shown in FIG. 1 to FIG. 4, a kind of disclosed ultra-wide-band emission unit, including radiating element, supporting element
2 and feeder panel 3, radiating element be supported on supporting element 2, feeder panel 3 passes through supporting element 2 and radiating element feed and couples, radiation
Unit includes four oscillator arms 1, the bending part 11 that there is downward bending to be formed for each side of each oscillator arms 1, the present invention
There is the feature of downward bending by every side of oscillator arms 1, oscillator has effectively been broadened in the case where not increasing projected area
The swept area of arm 1, to reach the characteristic for widening oscillator working frequency range.
Specifically, every two oscillator arms 1 are symmetrical arranged on supporting element 2, form a dipole, and two oscillator arms 1 are preferred
For on the same line or it is approximate on the same line, four oscillator arms 1 then form a pair of of dipole, that is, form dual polarised radiation
Unit.In the present embodiment, the equal downward bending in each side of each oscillator arms 1 forms a bending part 11, two neighboring bending part
It is not connected to bending part 11 described between 11 end preferably to be selected from the sides of oscillator arms 1 bending is formed vertically downward, effectively widens
Oscillator working frequency range.
Further, in the present embodiment, oscillator arms 1 are whole to use thin metal plate material, lighter in weight, and entire oscillator arms
1 lightweight is small and exquisite, and structure is simple, is easily changed.The shape of oscillator arms 1 can there are many, as be in the present embodiment it is rectangular, can also replace
It is changed to circle, diamond shape, sector etc., the shape for the radiating element that such four oscillator arms 1 are formed is also possible to a variety of, such as this implementation
Whole in example is also square structure, can also be eight-sided formation or other regular polygon structures.
In addition, also setting up a perforative limit hole 12 in each oscillator arms 1 in conjunction with shown in Fig. 2 and Fig. 4, it is used for and support
Corresponding position limiting structure cooperation, oscillator arms 1 are limited on supporting element 2 on part 2；And wherein a side (vibration of each oscillator arms 1
The innermost a side of sub- arm 1) on extend a coupling part 13, a limit card slot 14 is opened up on coupling part 13, is worn for feeder panel 3
It crosses.
Supporting element 2 is located at the lower section of radiating element, for being supported to radiating element.In the present embodiment, supporting element 2 is
Insulating materials, preferably plastic supporting pieces comprising integrally formed four support portions 21, the position of each support portion 21 and vibration
Sub- arm 1 is corresponding, i.e., each support portion 21 is located at the lower section of corresponding oscillator arms 1.Similarly with oscillator arms 1, the shape of support portion 21
Shape can also be to be a variety of, can be consistent with shape and oscillator arms 1, can also be inconsistent.In the present embodiment, four combinations of support portion 21 are formed
Supporting element 2 it is whole be in or approximate in butterfly can also be certainly other shapes, the application does not limit this, as long as can play
Support the effect of radiating element.
Preferably, oscillator arms 1 are also limited on corresponding support portion 21 by position limiting structure, so that oscillator arms 1 and support
It is firmly installed between portion 21.In the present embodiment, which specifically includes the above-mentioned limit being arranged on oscillator arms coupling part 13
Position hole 12 and the elastic spacing one 22 that is arranged on support portion 21, in the present embodiment, as shown in connection with fig. 5, elastic spacing one 22 with
Support portion 21 is integrally formed comprising and two limited posts 23 being oppositely arranged have adjustable clearance 24 between two limited posts 23,
And every 23 lower end of limited post is fixed on support portion 21, upper end extends outward to form a limiting section 25, limiting section 25 and limit
Limited step 26 is formed between column 23.In this way, because adjustable clearance 24 presence, by external force (such as by two limited posts 23 to
Inside clutch) reduce adjustable clearance 24 size passed through so that elastic spacing one 22 passes through for limit hole 12 in limit hole 12
Afterwards, the external force on locating part 22 is removed, adjustable clearance 24 restores, so that elastic spacing one 22 passes through limited step after limit hole 12
26 are fastened in oscillator arms 1.Certainly other conventional replacing structure replacements can also be used in position limiting structure here, will vibration as long as realizing
Sub- arm 1 is limited on support portion 21.The application supporting element 2 uses plastic form, while providing secured enabling capabilities
The effect for also acting limit bending oscillator arms 1 not only strengthens the intensity of unit but also provides convenience to assembling.
In addition, a limit card slot is also accordingly arranged in the limit card slot 14 on the corresponding oscillator arms coupling part 13 of each support portion 21
27, after oscillator arms 1 are installed on support portion 21, the limit card slot 27 in the two coincides, and passes through for feeder panel 3.This implementation
In example, limit card slot 27 is strip.
Further, in conjunction with shown in Fig. 4 and Fig. 6, an at least mounting post 28 outstanding, the peace are additionally provided on supporting element 2
Spacer can be installed according to antenna performance demand on dress column 28, can not also installed.In the present embodiment, the mounting post 28 setting
In the center position of supporting element 2, and four centers along supporting element 2 are set and are uniformly distributed mounting post 28, spacer passes through this
A little mounting posts 28 are installed on supporting element 2.
Feeder panel 3 is located at the lower section of supporting element 2, and the upper end passes through supporting element 2 and couples with the feed of oscillator arms 1.Specifically, originally
In embodiment, feeder panel 3 includes the feed plate body 31 that intersects of two panels, preferably right-angled intersection, after intersection, 3 upper end of feeder panel
Four feeds corresponding with four oscillator arms 1 end 32 is formed, raises upward to form a feedback on each feed end 32
Electric protrusion 33, which sequentially passes through the limit card slot 27,14 on corresponding support portion 21 and coupling part 13, from
And it feeds feeder panel 3 with oscillator arms 1 and couples.
In the present embodiment, feeder panel 3 is preferably PCB feeder panel, has the characteristics that flexible adjustable, and lighter in weight, is easy to
Production and manufacture, cost is relatively low.
When assembling, four oscillator arms 1 are respectively corresponded and are mounted on four support portions 21, the elasticity on support portion 21 is passed through
Locating part 22 realizes fastening.Two panels PCB feed plate body 31 pass through limit card slot 27,14 fitted together with supporting element 2, realize and
The feed of oscillator arms 1 couples, and entire assembling process is simple and easy.
The present invention has widened the characteristic of oscillator working frequency range, reaches 75% relative bandwidth；Based on 75% bandwidth feature,
The working frequency range of base station antenna unit of the present invention can be covering 1400-2700MHz or covering 1695- with flexibly adjustment
3700MHz。
A kind of revealed array antenna designed using above-mentioned ultra-wide-band emission unit of the embodiment of the present invention, such as Fig. 7
Shown, which includes a metallic reflection plate 4, and at least two above-mentioned ultra-wide-band emission units are arranged in the metallic reflection plate 4
And at least one low-frequency vibrator 5, low-frequency vibrator 5 (horizontal axis in Fig. 6) coaxial with ultra-wide-band emission unit arrangement, the present embodiment
In, 5 oscillators of the present invention and 2 low-frequency vibrators 5 are provided in metallic reflection plate 4.As described above, because of base station day of the present invention
Line unit ultra wide band characteristic, array antenna of the present invention are just able to realize 1695-2400MHz and 3550- in a limited space
The frequency dividing effect of 3700MHz.
Alternatively, at least two above-mentioned ultra-wide-band emission units can be also only set in metallic reflection plate 4.
Technology contents and technical characteristic of the invention have revealed that as above, however those skilled in the art still may base
Make various replacements and modification without departing substantially from spirit of that invention, therefore, the scope of the present invention in teachings of the present invention and announcement
It should be not limited to the revealed content of embodiment, and should include various without departing substantially from replacement and modification of the invention, and be this patent Shen
Please claim covered.
Claims (10)
1. a kind of ultra-wide-band emission unit comprising radiating element, the supporting element and feeder panel for being used to support radiating element, it is described
Radiating element includes four oscillator arms, and every two oscillator arms are symmetricly set on supporting element, which is characterized in that the feeder panel is worn
It crosses supporting element to couple with oscillator arms feed, the bending part that there is downward bending to be formed for each side of each oscillator arms.
2. ultra-wide-band emission unit according to claim 1, which is characterized in that the oscillator arms, supporting element and feeder panel
Between detachably install, the supporting element be insulating materials.
3. ultra-wide-band emission unit according to claim 1 or 2, which is characterized in that the supporting element includes four corresponding
Four support portions of oscillator arms, the feeder panel sequentially pass through support portion and corresponding oscillator arms, couple with oscillator arms feed.
4. ultra-wide-band emission unit according to claim 3, which is characterized in that extension in a side of the oscillator arms
A coupling part is stretched out, is equipped with the limit card slot passed through for feeder panel on the coupling part and the corresponding support portion.
5. ultra-wide-band emission unit according to claim 4, which is characterized in that a side of the coupling part from oscillator arms
The lower end of bending part extend outward to form.
6. ultra-wide-band emission unit according to claim 3, which is characterized in that the oscillator arms are also limited by position limiting structure
On corresponding support portion.
7. ultra-wide-band emission unit according to claim 6, which is characterized in that the position limiting structure includes being arranged in oscillator
Limit hole on arm and the elastic spacing one being arranged on support portion are formed with a limited step, institute on the elastic spacing one
It states elastic spacing one and is fastened in oscillator arms across limited step after limit hole.
8. ultra-wide-band emission unit according to claim 4, which is characterized in that the feeder panel is that two panels is cross one another
PCB feeder panel, the feeder panel upper end forms four feeds corresponding with four oscillator arms end, each feedback after intersection
Electric end forms a feed protrusion, and the feed protrusion sequentially passes through the limit card slot on the support portion and coupling part.
9. ultra-wide-band emission unit according to claim 1, which is characterized in that the center of the supporting element is equipped with prominent
Mounting post out.
10. ultra-wide-band emission unit according to claim 1, which is characterized in that the bending part is from the side of oscillator arms
Bending is formed vertically downward.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810386150.9A CN110416696A (en) | 2018-04-26 | 2018-04-26 | A kind of ultra-wide-band emission unit |
| PCT/CN2019/083933 WO2019206148A1 (en) | 2018-04-26 | 2019-04-23 | Ultra wide band radiation unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810386150.9A CN110416696A (en) | 2018-04-26 | 2018-04-26 | A kind of ultra-wide-band emission unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110416696A true CN110416696A (en) | 2019-11-05 |
Family
ID=68293753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810386150.9A Pending CN110416696A (en) | 2018-04-26 | 2018-04-26 | A kind of ultra-wide-band emission unit |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110416696A (en) |
| WO (1) | WO2019206148A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022089376A1 (en) * | 2020-10-31 | 2022-05-05 | 华为技术有限公司 | Multi-frequency fusion base station antenna, and communication device |
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| US20070241983A1 (en) * | 2006-04-18 | 2007-10-18 | Cao Huy T | Dipole antenna |
| CN101465475A (en) * | 2009-01-12 | 2009-06-24 | 京信通信系统（中国）有限公司 | Dual polarization radiating element and plane vibrator thereof |
| CN203521629U (en) * | 2013-08-13 | 2014-04-02 | 华为技术有限公司 | Dual polarized antenna unit and antenna array |
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| CN101673881A (en) * | 2009-10-16 | 2010-03-17 | 京信通信系统（中国）有限公司 | Broadband dual-polarized array antenna and plane dipole thereof |
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- 2018-04-26 CN CN201810386150.9A patent/CN110416696A/en active Pending
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| CN203521629U (en) * | 2013-08-13 | 2014-04-02 | 华为技术有限公司 | Dual polarized antenna unit and antenna array |
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| CN106356630A (en) * | 2016-10-31 | 2017-01-25 | 昆山恩电开通信设备有限公司 | Ultra-wideband radiation unit and antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022089376A1 (en) * | 2020-10-31 | 2022-05-05 | 华为技术有限公司 | Multi-frequency fusion base station antenna, and communication device |
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| Publication number | Publication date |
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| WO2019206148A1 (en) | 2019-10-31 |
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