CN106876859A - Light weight radar antenna - Google Patents
Light weight radar antenna Download PDFInfo
- Publication number
- CN106876859A CN106876859A CN201710170366.7A CN201710170366A CN106876859A CN 106876859 A CN106876859 A CN 106876859A CN 201710170366 A CN201710170366 A CN 201710170366A CN 106876859 A CN106876859 A CN 106876859A
- Authority
- CN
- China
- Prior art keywords
- plate
- shaped plate
- skeleton component
- antenna
- feeding network
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/02—Arrangements for de-icing; Arrangements for drying-out ; Arrangements for cooling; Arrangements for preventing corrosion
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- 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
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
-
- 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
- H01Q19/02—Details
Landscapes
- Details Of Aerials (AREA)
Abstract
The invention belongs to technical field of radar communication, and in particular to a kind of light weight radar antenna.This antenna includes casing and feeding network, and casing includes top board, base plate, antenna house, hurricane globe and side plate；This antenna also includes upper skeleton component and lower skeleton component, and gap constitutes the resettlement area for affixed feeding network between upper skeleton component and lower skeleton component；The U-shaped plate with rivets composition each other by upper U-shaped plate for upper skeleton component and lower skeleton component；The groove bottom of upper U-shaped plate is fitted and is riveted at matched base plate or top board plate face, under U-shaped plate the inner side cell wall difference upper U-shaped plate of face laminating respective outer cell wall and the bottom land direction of U-shaped plate extends upwards, under U-shaped plate notch at arrange flanging so as to be riveted at associated floor or top board plate face.The present invention possesses that construction is compact, be easy to safeguard, manufacturing cycle and the lower advantage of manufacturing cost, can effectively meet high speed rotation demand when radar antenna works.
Description
Technical field
The invention belongs to technical field of radar communication, and in particular to a kind of light weight radar antenna.
Background technology
For many years, the management of airdrome scene is constantly subjected to the joint effect of ground environment and weather condition.Airdrome scene is supervised
It is an important component of air traffic control facility depending on radar system, it has real-time target detectivity higher,
Can reliably, accurately detect the moving state that airdrome scene is boarded a plane with motor vehicles.In airport appropriate location erecting bed
Face surveillance radar equipment and supervision equipment, can make controller to know airdrome scene traffic in any condition, so that
The control condition and safety of airdrome scene are substantially improved, ground handling efficiency is improved.
Current airport surface detection radar system is mainly using the working method of radar antenna+turntable.Mode of operation
The terrain clearance of the radar antenna of airport surface detection radar system is 20-30m, while rotating speed is even up under turntable effect
60r/min.On the one hand, the radar antenna of above-mentioned terrain clearance is reached when the revolution that axle is plumb line that rotates is acted, Chang Yi
There is " black under lamp " situation；Radar antenna terrain clearance is higher, and irradiation blind area existing between radar antenna and ground is bigger,
This is obviously adversely affected safely to the control of airdrome scene.On the other hand, the casing of current radar antenna all uses muscle
Plate framework structure, its structure type complexity, more amount of parts, heavier-weight and size is larger, often to radar antenna
High speed rotation produce influence, and then cause radar antenna it is slack-off to the sweep speed of observation area.With air traffic not
Disconnected to increase, effective management requirement of ground aviation device and motor vehicles becomes increasingly conspicuous, only can be to the profile of the antenna casing of radar
The technical requirements such as size, weight, wind load action area are improved further, and conventional radar antenna structure has been difficult to meet existing
The application demand of generationization airport monitoring.
The content of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, there is provided light weight radar a kind of simple for structure and practical
Antenna, it possesses, and construction is compact, be easy to maintenance, manufacturing cycle and the lower advantage of manufacturing cost, can effectively meet radar antenna
High speed rotation demand during work.
To achieve the above object, present invention employs following technical scheme：
A kind of light weight radar antenna, this antenna at least includes casing and the feeding network being installed in casing, the case
Body includes top board, base plate and connects the antenna house and hurricane globe on above-mentioned plate body homonymy side long respectively；The top board, base plate, day
Irdome and hurricane globe enclose to form strip tubular structure jointly, are arranged for closing this in two tube port positions of the strip tubular structure
The side plate of nozzle；It is characterized in that：This antenna also include in the casing barrel chamber and parallel arrangement alongside one another upper skeleton group
Part and lower skeleton component, upper skeleton component and lower skeleton component profile are the trapezoidal tubular structure for pushing up narrow bottom width in cross section
Make, and two skeleton components the parallel casing length direction in tube length direction, top surface is opposite each other with lower skeleton component for upper skeleton component
And two gap between top surface constitute resettlement area for affixed feeding network；Upper skeleton component and lower skeleton component are by upper U
Template and under U-shaped plate rivet compositions each other, the width of rebate of upper U-shaped plate be less than slot bottom width and under U-shaped plate width of rebate it is big
In slot bottom width；The groove bottom of upper U-shaped plate is fitted and is riveted at matched base plate or top board plate face, under U-shaped plate it is interior
The respective outer cell wall of the side channel wall difference upper U-shaped plate of the face laminating and bottom land direction of U-shaped plate extends upwards, under U-shaped plate notch
Place's arrangement flanging is so as to be riveted at associated floor or top board plate face.
Preferably, this antenna also including the parallel casing length direction of plate length direction upper flange and lower wing plate, upper flange and
Lower wing plate is fitted to each other to form " eight " word platy structure, and is somebody's turn to do the letter that the slot end of " eight " word platy structure is matched with feeding network
At at number transmitting terminal and where wide mouth end directional antenna cover；One end near antenna house of upper flange is upturned and connects upper bone
The corresponding side flanging of U-shaped plate under at frame component, and lower wing plate near antenna house one end downsagging and connect sending down the fishbone
The corresponding side flanging of U-shaped plate under at frame component；The bottom land profile of U-shaped plate is in along transmission network under at the lower skeleton component
The signal direction of the launch of network and highly progressively lower step-like structure, accordingly arrange the platform of the above-mentioned step-like structure of correspondence at lower wing plate
Rank mouthful；Each step surface of the bottom land of U-shaped plate respectively constitutes the lower mounting surface and lower wing plate for holding in the palm support feeding network under above-mentioned
Locate the support support face of each bench port.
Preferably, make the cross section of feeding network along vertical box body length direction, the line of symmetry of the feeding network with
The angle angle formed between lower wing plate plate face is more than the angle angle formed between the line of symmetry and upper flange plate face of feeding network
Degree.
Preferably, the upper U-shaped plate, under U-shaped plate and feeding network by two pieces be sequentially arranged along casing length direction
Sub-component above is spliced to form each other.
Preferably, reinforcing plate and installing plate have also been sequentially arranged at plate outer side plate face；The base plate, reinforcing plate and peace
Dress plate each other plate face laminating and three's plate body center coaxially through have for circuit pass through mounting hole.
Preferably, the antenna house and hurricane globe profile are in cambered surface tabular, at the lateral surface of antenna house and hurricane globe
It is coated with one layer of hydrophobicity lubriation material.
Main advantages of the present invention are：
1), abandoned such as complex structure, weight that the internal layer support system of traditional gusset frame structure brought compared with
The defect such as weight or even high-speed rotation poor performance.The present invention on the basis of traditional strip body structure, by upper skeleton component and
Lower skeleton component is fitted to each other so as to clamp and fasten feeding network, so as to vertical be upwardly formed top board, upper skeleton component,
The assembling system of the multi-level integration of feeding network, lower skeleton component and base plate.The formation of above-mentioned assembling system, on the one hand
Simplify supporting piece structure so that of the invention while the affixed stability of feeding network and whole machine high reliability is ensured, relatively
Possesses the advantage that component number is less, manufacturing cycle is shorter, manufacturing cost is lower for traditional structure.The opposing party
Pairing is riveted and formed each other by Multi-layer U-shape plate for face, upper skeleton component and lower skeleton component, is coordinated with modularization to each other,
Reduce because of the influence of the deformation that the techniques such as welding cause, not only versatility and maintenanceability are more preferable, while weight lighter, rigidity
More preferably, especially short transverse size is smaller for appearance and size, more can effectively reduce influence when wind load is operated to antenna.This
Outer, due to upper skeleton component, top surface is relative each other with lower skeleton component, and the sky of " X " type is formd on whole casing cross section
Between support structure, may be such that housing interior volume is bigger and compact in design is symmetrical, it is clear that be also beneficial to the peace of internal feeding network
Dress and maintenance, this also reduces the rotary inertia and moment of wind resistance of antenna beneficial to further, so that the motor for reducing antenna pedestal drives
Torque.The skeleton component of upper and lower two closings is connected into feeding network the X-type support of stabilization, then with front antenna cover,
Rear portion hurricane globe and left side plate forming closed casing, it is to avoid outside dust, moisture to the corrosion of internal components with damage
It is bad.
2), as the further preferred scheme of such scheme, also arranged by upper flange in the signal transmitting terminal of feeding network
And the bell-mouth structure of air that lower wing plate is formed, to ensure the orientation conduction function to sending signal.Upper flange and lower wing plate side are solid
The signal transmitting terminal of feeding network is connected to, opposite side then connects corresponding base plate and top board using turnup structure, and then realizes
The affixed construction of integration of feeding network, each wing plate and casing.For the top surface of lower skeleton component, namely under U-shaped plate groove
At bottom surface, the step-like structure of at least two-layer ladder is should be, for realizing the synchronous support support to feeding network and lower wing plate, most
Integrally-built assembling steadiness and functional reliability are ensured eventually.
3), it is worth noting that, the tilt angled down of lower wing plate of the present invention is actually the updip more than upper flange
Angle；When in other words, namely along vertical box body length direction making the cross section of feeding network, the line of symmetry of feeding network with
The angle angle formed between lower wing plate plate face is more than the angle angle formed between the line of symmetry and upper flange plate face of feeding network
Degree.The otherness of above-mentioned twice angle so that search coverage of the invention is relatively more on the lower side, the blind area of its detection is obviously also
Less.The tilt angled down of lower wing plate is bigger, and irradiation blind area existing between radar antenna and ground is just smaller, it is clear that also just more sharp
In the control security of lifting airdrome scene.
4), upper U-shaped plate, under U-shaped plate and feeding network be spliced to form each other by more than two pieces of sub-component, with further
Refinement its structure, be more conducive to realize its modularized production and assembling.Reinforcing plate and the installing plate even setting of mounting hole, then it is real
The assembling capacity of relative turntable of the invention is showed.Antenna house and hurricane globe are the composite material work piece of semicircular arc structure, its
Surface uses hydrophobic lubricated surface coating material, is beneficial to reduction rainwater transmission loss and reduces rainwater noise temperature, it is ensured that produces
Product all weather operations.
Brief description of the drawings
Fig. 1 is dimensional structure diagram of the invention；
Fig. 2 is end view of the invention；
Fig. 3 is the Structure explosion diagram of Fig. 1；
Fig. 4 is the dimensional structure diagram of upper U-shaped plate；
The dimensional structure diagram of Fig. 5 U-shaped plates under being.
Illustrate each label as follows with each component names corresponding relation of the invention：
10- casing 11- top board 12- base plate 13- antenna house 14- hurricane globe 15- side plates
20- upper skeleton component 30- lower skeleton components
U-shaped plate c- flangings under the upper U-shaped plate b- of a-
40- feeding network 50- upper flange 60- lower wing plate 61- bench ports
70- reinforcing plate 80- installing plates 90- polarization covers
Specific embodiment
For ease of understanding, make described further below here in connection with Fig. 1-5 pairs of specific implementation structure of the invention：
Agent structure of the invention is still made up of casing 10 and the feeding network being arranged in casing 10 40.Casing 10 is such as
Shown in Fig. 1-3, including circumferential it be connected successively and enclose to form the top board 11 of tubular structure, antenna house 13, base plate 12 and windproof
Cover 14, the side plate 15 for sealing the nozzle is arranged in the both sides nozzle of the tubular structure.The lower section of base plate 12 is stacked adds again
Strong plate 70 and installing plate 80, to be assembled at the corresponding auxiliary section of turntable.On the basis of said structure, as Figure 2-3, case
The trapezoidal or perhaps pinnacle of upper and lower two closings of arrangement is the skeleton component of plane triangle in body 10.Above-mentioned two bone
Frame component is connected to each other to form the X-type support structure of stabilization by sandwiched feeding network 40 therebetween, X-type support
Affixed top board 11 and base plate 12 again are constructed, so as to realize the integration of complete machine structure.During actual fabrication, it is contemplated that each skeleton component
Length, can suitably be broken down into some sections of sub-component, it is necessary to when recombinant assembling.Wherein：
As shown in Figure 2-5, upper skeleton component 20 by upper U-shaped plate a above and it is underlying under U-shaped plate b that
This coordinates composition.Upper U-shaped plate a is strip grooves tabular of the width of rebate less than slot bottom width, and under U-shaped plate b be then width of rebate
More than the similar V-board shape of slot bottom width.During assembling, the sub-component of each U-shaped plate will be constituted first each other by alignment pin and riveting
Bind and match somebody with somebody, thus formed U-shaped plate a and under U-shaped plate b, afterwards relatively put down treatment.Again afterwards by the outside cell wall of upper U-shaped plate a and lower U
Fitted each other between the inner side cell wall of template b, then the bottom land of upper U-shaped plate a is fitted with top board 11, it is one that three is affixed by rivet
After body structure, so as to realize upper skeleton component 20 assembling and opposite case 10 between affixed operation.Lower skeleton component 30 is then
Combined and constituted by U-shaped plate b and underlying U-shaped plate a under above, assembling process is with upper skeleton component 20 similarly.
Step-like structure is matched with feeding network 40 and the lower face of lower wing plate 60 successively at the top surface of lower skeleton component 30, and lower skeleton
The bottom surface of component 30 is then riveted on base plate 12.
The horn mouth formed by upper flange 50 and lower wing plate 60 is also arranged in the signal transmitting terminal of feeding network 40.Lower wing plate
60 tilt angled down is actually the updip angle more than upper flange 50；In other words, it is namely as shown in Figure 2, along vertical
The length direction of casing 10 and when making the cross section of feeding network 40, shape between the line of symmetry and the plate face of lower wing plate 60 of feeding network 40
Into angle angle beta more than feeding network 40 line of symmetry and the plate face of upper flange 50 between formed angle angle [alpha].Upper flange 50
Close antenna house 13 one end is upturned and corresponding side flanging c of U-shaped plate b under connecting at upper skeleton component 20, and
One end downsagging of the close antenna house 13 of lower wing plate 60 and under connecting at lower skeleton component 30 outside the corresponding side of U-shaped plate b
Flange c.The cooperation side fixed polarization cover 90 of the above-mentioned and corresponding flanging c of upper flange 50 and lower wing plate 60.Show shown in Fig. 3
When in structure, feeding network 40 is linked in sequence successively for eight sub-components of small feeding network 40 by fastening screw, then will feedback
Electric network 40 is fixed on lower skeleton component 30 by shop bolt.It is fixed in feeding network 40 from from the point of view of mitigating weight
After the completion of position, pin fixed connection mode is used between each mounting surface and corresponding skeleton component of feeding network 40, so as to realize feed
Network 40 and upper skeleton component 20 and the secure fit of lower skeleton component 30.After installation, eight sub-components of feeding network 40
Mounting surface should be reprocessed by lathe, so as to met by the machining accuracy of lathe whole front mounting surface precision will
Ask.
For antenna house 13 and hurricane globe 14, as shown in figure 3, antenna house 13 is meet certain requirement on electric performance half
The composite material work piece of arc-shaped structure, its outer surface coating hydrophobicity lubriation material is beneficial to reduction windage and rainwater transmission
Loss and reduction rainwater noise temperature, it is ensured that product all weather operations.Equally, hurricane globe 14 is the composite wood of semicircular arc structure
Material workpiece, its outer surface coating hydrophobicity lubriation material is beneficial to reduction windage and rainwater transmission loss and reduces rainwater noise
Temperature, it is ensured that product all weather operations.Meanwhile, as Figure 2-3, set pre-buried in the side of antenna house 13 and hurricane globe 14
Part, so as to as the interface between antenna house 13 and hurricane globe 14 and corresponding skeleton component.The end of antenna house 13 and hurricane globe 14
Portion then scribbles fluid sealant, prevents having aqueous vapor to enter inside cover, so as to ensure the sealing of antenna.
Claims (6)
1. a kind of light weight radar antenna, this antenna at least includes casing (10) and the feeding network being installed in casing (10)
(40), the casing (10) is including top board (11), base plate (12) and connects the antenna house on above-mentioned plate body homonymy side long respectively
And hurricane globe (14) (13)；The top board (11), base plate (12), antenna house (13) and hurricane globe (14) enclose to form strip jointly
Tubular structure, the side plate (15) for closing the nozzle is arranged in two tube port positions of the strip tubular structure；It is characterized in that：This
Antenna also include in casing (10) barrel chamber and parallel arrangement alongside one another upper skeleton component (20) and lower skeleton component
(30), upper skeleton component (20) and lower skeleton component (30) profile are the trapezoidal barrel-shaped structure for pushing up narrow bottom width in cross section,
And two skeleton component tube length direction parallel casing (10) length direction, upper skeleton component (20) and lower skeleton component (30) are each other
Gap constitutes the resettlement area for disposing feeding network (40) to top surface in opposite directions and between two top surfaces；Upper skeleton component (20) and under
By upper U-shaped plate (a), the U-shaped plate (b) with rivets composition to skeleton component (30) each other, and the width of rebate of upper U-shaped plate (a) is less than groove
Bottom width degree and under U-shaped plate (b) width of rebate be more than slot bottom width；The groove bottom of upper U-shaped plate (a) is fitted and is riveted on and matches somebody with somebody therewith
At the base plate (12) or top board (11) plate face of conjunction, under U-shaped plate (b) the inner side cell wall difference upper U-shaped plate (a) of face laminating it is corresponding outer
Side channel wall and upwards U-shaped plate (a) bottom land direction extend, under U-shaped plate (b) notch at arrange flanging (c) so as to be riveted on
At associated floor (12) or top board (11) plate face.
2. a kind of light weight radar antenna according to claim 1, it is characterised in that：This antenna also includes that plate length direction is parallel
The upper flange (50) and lower wing plate (60) of casing (10) length direction, upper flange (50) and lower wing plate (60) are fitted to each other to be formed
" eight " word platy structure, and should the slot end of " eight " word platy structure be matched with the signal transmitting terminal of feeding network (40) and wide
At where mouth end directional antenna cover (13)；One end of the close antenna house (13) of upper flange (50) is upturned and connects upper skeleton
Corresponding side flanging (c) of U-shaped plate (b) under component (20) place, and one end of the close antenna house (13) of lower wing plate (60) to
Lower warpage simultaneously connects corresponding side flanging (c) of U-shaped plate (b) under lower skeleton component (30) place；The lower skeleton component (30)
The bottom land profile of U-shaped plate (b) is in highly progressively lower step-like structure along the signal direction of the launch of feeding network (40) under place,
Lower wing plate (60) place accordingly arranges the bench port (61) of the above-mentioned step-like structure of correspondence；Under above-mentioned the bottom land of U-shaped plate (b) each
Step surface respectively constitutes the support support of the lower mounting surface and each bench port in lower wing plate (60) place (61) for holding in the palm support feeding network (40)
Face.
3. a kind of light weight radar antenna according to claim 2, it is characterised in that：Along vertical casing (10) length direction
Make the cross section of feeding network (40), the angle formed between the line of symmetry and lower wing plate (60) plate face of the feeding network (40)
Angle is more than the angle angle formed between the line of symmetry and upper flange (50) plate face of feeding network (40).
4. a kind of light weight radar antenna according to claim 1 or 2 or 3, it is characterised in that：The upper U-shaped plate (a), lower U
Template (b) and feeding network (40) splice each other by the sub-component of more than two pieces be sequentially arranged along casing (10) length direction
Formed.
5. a kind of light weight radar antenna according to claim 1 or 2 or 3, it is characterised in that：In base plate (12) outside plate face
Place has also been sequentially arranged reinforcing plate (70) and installing plate (80)；The base plate (12), reinforcing plate (70) and installing plate (80) are each other
Plate face is fitted and coaxially run through in three's plate body center to be had for the current mounting hole of circuit.
6. a kind of light weight radar antenna according to claim 1 or 2 or 3, it is characterised in that：The antenna house (13) and anti-
Fan housing (14) profile is in cambered surface tabular, and one layer of hydrophobicity is coated with the lateral surface of antenna house (13) and hurricane globe (14)
Lubriation material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170366.7A CN106876859A (en) | 2017-03-21 | 2017-03-21 | Light weight radar antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710170366.7A CN106876859A (en) | 2017-03-21 | 2017-03-21 | Light weight radar antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106876859A true CN106876859A (en) | 2017-06-20 |
Family
ID=59172729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710170366.7A Withdrawn CN106876859A (en) | 2017-03-21 | 2017-03-21 | Light weight radar antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106876859A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331960A (en) * | 2017-06-26 | 2017-11-07 | 北京无线电测量研究所 | A kind of antenna house and its manufacture method for reflector antenna |
| CN110459857A (en) * | 2019-06-27 | 2019-11-15 | 安徽四创电子股份有限公司 | A kind of radar antenna for ship traffic management system |
| CN112003017A (en) * | 2020-07-31 | 2020-11-27 | 武汉虹信科技发展有限责任公司 | Phase-shifting feed device of array antenna and array antenna |
-
2017
- 2017-03-21 CN CN201710170366.7A patent/CN106876859A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331960A (en) * | 2017-06-26 | 2017-11-07 | 北京无线电测量研究所 | A kind of antenna house and its manufacture method for reflector antenna |
| CN110459857A (en) * | 2019-06-27 | 2019-11-15 | 安徽四创电子股份有限公司 | A kind of radar antenna for ship traffic management system |
| CN110459857B (en) * | 2019-06-27 | 2024-05-24 | 安徽四创电子股份有限公司 | Radar antenna for ship traffic management system |
| CN112003017A (en) * | 2020-07-31 | 2020-11-27 | 武汉虹信科技发展有限责任公司 | Phase-shifting feed device of array antenna and array antenna |
| CN112003017B (en) * | 2020-07-31 | 2023-04-14 | 中信科移动通信技术股份有限公司 | Phase-shifting feed device of array antenna and array antenna |
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| PB01 | Publication | ||
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Application publication date: 20170620 |