CN107978840A - A kind of dual-linear polarization antenna feed array component - Google Patents
A kind of dual-linear polarization antenna feed array component Download PDFInfo
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- CN107978840A CN107978840A CN201711417668.6A CN201711417668A CN107978840A CN 107978840 A CN107978840 A CN 107978840A CN 201711417668 A CN201711417668 A CN 201711417668A CN 107978840 A CN107978840 A CN 107978840A
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- circuit board
- layer circuit
- location division
- feed array
- antenna
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Classifications
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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
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- 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
-
- 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
- H01Q1/525—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas between emitting and receiving antennas
-
- 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
- H01Q19/18—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 having two or more spaced reflecting surfaces
- H01Q19/19—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 having two or more spaced reflecting surfaces comprising one main concave reflecting surface associated with an auxiliary reflecting surface
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
The invention discloses a kind of dual-linear polarization antenna feed array component, it includes feed array, secondary reflecting element, the stent by secondary reflecting element installed in feed array overhead.Stent includes multiple location divisions one, multiple location divisions two, multiple supporting rods.Location division two is in the same plane with corresponding location division one and place plane is connected perpendicular to subreflector, and by supporting rod.Each supporting rod is the laminated structure repeatedly bent, and the both ends of each supporting rod are oppositely arranged and are parallel to each other up and down.Feed array includes the upper layer circuit board, middle layer circuit board, bottom circuit board of spaced fixation.Bottom circuit board is the microstrip reflection plate with metal floor, and opens up several transmitting antennas feedback mouth and reception antenna feedback mouth.Middle layer circuit board is the antenna structure of micro-strip form, its positive and negative is to be divided into several regions by trellis metal band circuit, and the trellis metal band circuit of positive and negative is by plated-through hole mutual conduction.Upper layer circuit board is one block of dielectric-slab.
Description
Technical field
The present invention relates to microwave communication, a kind of feed array component of the star ground in communication in moving field, more particularly to it is a kind of double
Linear polarized antenna feed array component.
Background technology
It is the antenna that critical piece forms by metal mirror and feed, mainly includes single reflection surface antenna and double-reflecting face
Two major class of antenna, this is to be based on antenna form derived from optical principle, is widely used in microwave and the shorter wave band of wavelength.Second
A variety of single reflection surface antennas start largely to use before and after world war, occur to the sixties using Cassegrain antenna as representative
Dual reflector antenna.They have become most common a kind of microwave and millimeter wave high-gain aerial, are widely used in communication, thunder
Reach, radionavigation, electronic countermeasure, remote measurement, the technical field such as radio astronomy and meteorology.By taking satellite communication as an example, due to gain
High and simple in structure, reflector antenna is the principal antenna form of communication satellite earth station；Since extensible folding umbrella can be made
Shape structure, it is the citation form of spaceship and satellite antenna again.So far diversified reflecting surface shape has not only been generated
Formula meets different needs, while a variety of feed structures of function admirable also occurs.
Communication in moving is the abbreviation of " ground satellite station communication system on the move ".Star " communication in moving " be to meet user
The new opplication that the demand of broadband video information produces is transmitted in dynamic mobile by satellite, uses the Ku frequencies of trapped orbit satellite
Duan Jinhang mobile communication transmission wide-band-messages, are a kind of emerging service applications.Pass through communication in moving system, vehicle, steamer, aircraft etc.
Mobile carrier during the motion can the platform such as real-time tracking satellite, transmit the multimedias such as voice, data, image incessantly
Information, can meet the needs of various military-civil emergency communications and the multimedia communication under mobile condition.
At present, " communication in moving " system is mainly communicated using Ku wave bands with trapped orbit satellite.According to 2014 national
Issue《The static middle onboard satellite communication earth station generic specifications used of Ku frequency ranges》、《Ku frequency range portable satellites lead to
Believe earth station generic specifications》Deng documentation requirements, Ku wave bands " communication in moving " system need to by application subsystem, power subsystem,
Channel subsystem, antenna and its control system etc. form.Antenna system need to cover uplink/downlink frequency range at the same time, wherein upper line frequency
Section is 13.75~14.5GHz, 10.95~11.75GHz of band downlink, 12.25~12.75GHz, the pole of uplink and downlink frequency range
Turn to two orthogonal linear polarizations.To ensure communication smooth between satellite and earth moving equipment, system antenna need to be directed toward logical in real time
Believe satellite.To the interference of neighbouring satellite when launching in order to avoid antenna, it usually needs the tracking of mobile equipment antenna during exercise
Error is less than 0.1 °, and feed will also carry out rotation tracking, and the polarization isolation received between transmitting is greater than 30dB.This
Outside, corresponding requirement it is also proposed to the transmission power of antenna, minor level etc. in file.
At present, have many enterprises' unit both at home and abroad and be proposed " communication in moving " relevant product, as Israel RaySat is public
Multigroup chip antenna of department's release, the IMVS450M products of U.S. TracStar releases, Starling companies of Israel release
0.5m and the vehicle-mounted ring-focus antennas of 1.2m that Mijet series of products and Zhong electricity groups 54 of the country are researched and developed etc..To meet antenna pair
The requirement of the high-precision real-time tracking alignment of satellite, includes automatic tracking system in above-mentioned " communication in moving " product." in dynamic
It is logical " automatic tracking system is in the case of initial static, course angle, carrier are measured by GPS, theodolite, Strapdown Inertial Navigation System
The longitude and latitude of position and the initial angle of relative level, then according to its posture and geographical location, satellite longitude certainly
The dynamic antenna elevation angle determined on the basis of horizontal plane, the rotational orientation on the premise of the holding elevation angle is constant to horizontal plane, and with letter
Number maximum mode is automatically to satelloid.During carrier movement, the change of attitude of carrier is measured, passes through mathematical platform
Computing, is transformed to the error angle of antenna, and antenna azimuth, pitch angle, polarizing angle are adjusted by servo control mechanism, ensures that carrier is becoming
Antenna makes satellite transmitting antenna real-time tracking geostationary satellite in carrier movement to star in prescribed limit during change.
The system tracking mode has autotracking and inertial navigation to track two kinds.Autotracking be by satellite beacon carry out antenna closed servo with
Track；Inertial navigation tracking is to carry out antenna tracking using the change of gyro inertial navigation combination sensitive carrier.Both tracking can be according to scene
Situation automatically switches.After system, which finishes star, to be transferred to from motion tracking, worked in a manner of autotracking；At the same time, inertial navigation system
Also enter working status, and constantly export the data such as antenna polarization, orientation and pitching.When due to blocking or other reasons cause day
When line beacon signal is interrupted, system automatically switches to inertial navigation tracking mode.
No matter which kind of tracking mode antenna uses, and high-precision servo-drive system is the key of traditional " communication in moving " system all the time
One of part.Under normal conditions, high accuracy servo system need to have about 0.1 ° of high tracking accuracy, simultaneously because " communication in moving " day
Line has larger bore (the desired antenna aperture that meets to network at present is more than 1 meter) and weight, is watched so as to cause high accuracy
The higher cost of dress system.At present, applied to " communication in moving " high accuracy servo system cost easily it is tens thousand of, even more than ten
Ten thousand, whole " communication in moving " system cost most is accounted for, it is extensive in civil field to limit " communication in moving " communication system
Using.
In current satellite communication antena, whether secondary reflecting element is to be needed according to environment and consider to add, and adds secondary reflection
During part, it needs to ensure that the subreflector of secondary reflecting element facing away from feed array, and towards the overhead field of feed array.Cause
, it is necessary to use secondary reflecting element mounting bracket, secondary reflecting element mounting bracket is used for the peace that secondary reflecting element is installed on to feed array for this
Shelve, and need：The subreflector of secondary reflecting element is parallel to feed array, and the center of subreflector and feed array
Center is located along the same line.Otherwise easily there is bigger communication data error, it is therefore desirable to reduce frock when assembled and miss
Difference, and ensure secondary reflecting element in the long-term use with respect to the stationarity of feed array.
The content of the invention
In view of this, the present invention provides a kind of dual-linear polarization antenna feed array component, feed array of the invention and master
Reflecting surface coordinates, it is possible to achieve the low-angle of satellite, high speed, high-precision electron beam are scanned antenna system and tracking, adopts
With this technology, the requirement to the precision and dynamic response speed of servo-drive system can be reduced, thus reduce servo-drive system into
This；Furthermore the present invention can reduce frock error when secondary reflecting element is assembled in feed array overhead, and ensure that secondary reflecting element exists
With respect to the stationarity of feed array during long-time service.
The present invention solution be：A kind of dual-linear polarization antenna feed array component, it includes feed array, secondary reflection
Part, the stent by secondary reflecting element installed in feed array overhead, stent ensure the subreflector of secondary reflecting element parallel to feed battle array
Row, and the center of subreflector and the center of feed array are located along the same line；
The pair reflecting element mounting bracket includes multiple location divisions one, multiple location divisions two, multiple supporting rods；Wherein, it is more
A location division one is welded on subreflector, and using the center of subreflector as the center of circle annular layout；Multiple location divisions two
Be welded on the bottom surface of mounting bracket, and using the center of feed array as the center of circle annular layout, multiple location divisions two respectively with
Multiple location divisions one correspond, and location division two and corresponding location division one are in the same plane, and place plane perpendicular to
Subreflector；One end of each supporting rod is fixed therein on a location division one, and the opposite other end of each supporting rod is fixed
Wherein on a location division two；Each supporting rod is the laminated structure repeatedly bent, and the both ends of each supporting rod are opposite up and down
Set and be parallel to each other；
Feed array includes upper layer circuit board, middle layer circuit board and bottom circuit board, upper layer circuit board, intermediate layer electricity
It is spaced and fixes between road plate and bottom circuit board；Wherein, bottom circuit board is the microstrip reflection plate with metal floor, is opened thereon
Mouth and reception antenna feedback mouth are presented equipped with several transmitting antennas；Middle layer circuit board is the antenna structure of micro-strip form, its is positive and negative
Face is to be divided into several regions by trellis metal band circuit, and the trellis metal band circuit of positive and negative is logical by metallizing
Hole mutual conduction；Upper layer circuit board is one block of dielectric-slab；The attached conductor in bottom side of bottom circuit board.
Further as such scheme is improved, the edge of the one end in each supporting rod stationary positioned portion one along subreflector
Extend in parallel, bent downward after extending subreflector and bend and run parallel to accordingly along bottom surface after extending to location division two
Location division two.
Further as such scheme is improved, the edge of the one end in each supporting rod stationary positioned portion one along subreflector
Extend in parallel, bend downward and extend vertically after extending subreflector, then bend and extend towards two direction of location division, extend to
Bent behind location division two and run parallel to corresponding location division two along bottom surface.
Further as such scheme is improved, and the pair reflecting element mounting bracket further includes multiple fasteners, Mei Gezhi
Strut is fixed on corresponding location division one by least one fastener, and it is corresponding fixed to be also fixed on by least another fastener
In position portion two.
Further, supporting rod is located at the same side of corresponding location division one and corresponding location division two, and supporting rod is wherein
One side and corresponding location division one, corresponding location division two are affixed.
Further as such scheme is improved, and is prolonged on the bottom circuit board and is radially provided with 4 power feed holes, and the 4 of radial direction
The both sides of a power feed hole are also respectively provided with 2 power feed holes, set 8 power feed holes altogether, wherein four are presented mouth for transmitting antenna,
Four are presented mouth for reception antenna.
Further as such scheme is improved, and on bottom circuit board, upper and lower side stretches out bottom for SSMA joint welds
Circuit board, wherein among the two-arm of reception antenna on layer circuit board and transmitting antenna respectively with the inner cores of SSMA interfaces and
Outer wall is connected by one section of printing thin wire.
Further as such scheme is improved, and the front in the middle each region of layer circuit board is provided with respectively as reception
Metal dipole, reception antenna feed pad, the transmitting antenna feed pad of antenna, the back side in each region is provided with as hair
The metal dipole of antenna is penetrated, reception antenna feed pad is connected with reception antenna, transmitting antenna feed pad and transmitting antenna
Connection, the reception antenna and transmitting antenna of positive and negative corresponding region are arranged in a crossed manner at an angle of 90.
Further as such scheme is improved, several nylon spiral shells are equipped between upper layer circuit board and middle layer circuit board
Column, the intermediate shaft hole of several nylon studs are respectively aligned to the fixation on the mounting hole on layer circuit board and middle layer circuit board
Hole, several nylon studs, the intermediate shaft hole point of several nylon studs are equipped between middle layer circuit board and bottom circuit board
Not Dui Zhun among mounting hole on mounting hole and bottom circuit board on layer circuit board.
Further as such scheme is improved, and is passed down through by several nylon screws from upper layer circuit board top
It is upward from the bottom of bottom circuit board by several nylon screws after mounting hole on layer circuit board in precession nylon stud,
Sequentially pass through precession nylon after mounting hole on bottom circuit board, several nylon studs, the mounting hole on middle layer circuit board
In stud, so that upper layer circuit board, middle layer circuit board and bottom circuit board are fixed together.
The present invention has the following advantages compared with prior art：
1st, designed antenna feed array can be conveniently applied to the satellite communication antena of single-lens reflex or double-reflecting face
In, low-angle, high speed, high-precision wave beam tracking and scanning are realized, to reduce precision and dynamic speed to mechanical servo
Requirement, so as to reduce the cost of antenna system, promote application of " communication in moving " system in civil field；
2nd, realized and can be applied to using type metal cross dipole minor structure and the principle of " Fabry Perot " antenna
The feed of " communication in moving " antenna；Compared to feed structures such as traditional waveguide mouth, waveguide trumpets, the feed structure simple and compact,
Thus multiple units can be realized in less area and transmit/receive passage, so that beneficial to required by realizing antenna for satellite communication in motion
The beam point steering of higher precision；
3rd, the cancellation techniques used can realize the isolation that 30dB between passage is transmitted/received at same position at antenna structure end
Degree, alleviates the pressure of back end device；
4th, the feed uses microband printing board structure of circuit, and technical maturity, processing is simple, cost is relatively low and is advised suitable for big
Mould produces.
5th, using stent, its fixed form of location division one on subreflector, the two fixation side on bottom surface of location division
Formula, ensure that the firm connection between feed array and secondary reflecting element；Location division one using the center of subreflector as the center of circle ring
Shape is laid out, location division two using the center of feed array as the center of circle annular layout, and location division two and the corresponding institute of location division one
In plane perpendicular to subreflector, it can ensure the subreflector of secondary reflection parallel to feed array, and ensure subreflector
Center and the center of feed array are located along the same line.Therefore, the present invention can reduce secondary reflecting element and be assembled on feed array
Frock error when empty, and ensure secondary reflecting element in the long-term use with respect to the stationarity of feed array.
Brief description of the drawings
Fig. 1 is the overall structure signal using the Cassegrain antenna of dual-linear polarization antenna feed array component of the present invention
Figure.
Fig. 2 is that secondary reflecting element and feed array use the dimensional structure diagram that stent is assembled in Fig. 1.
Fig. 3 is the side view of dual-linear polarization antenna feed array of the present invention.
Fig. 4 is the three-dimensional exploded view of dual-linear polarization antenna feed array of the present invention.
Fig. 5 is the overlooking the structure diagram of the bottom circuit board of dual-linear polarization antenna feed array of the present invention.
Fig. 6 is the side cutaway view of the bottom circuit board in Fig. 5.
Fig. 7 is the overlooking the structure diagram of the middle layer circuit board of dual-linear polarization antenna feed array of the present invention.
Fig. 8 is the bottom view of the middle layer circuit board in Fig. 7.
Fig. 9 is the side cutaway view of the middle layer circuit board in Fig. 7.
Figure 10 is the overlooking the structure diagram of the upper layer circuit board of dual-linear polarization antenna feed array of the present invention.
Figure 11 is the side cutaway view of the upper layer circuit board in Figure 10.
Figure 12 is the return loss simulation result figure of dual-linear polarization antenna feed array of the present invention.
Figure 13 is the receiving port of dual-linear polarization antenna feed array of the present invention and the measured result figure of emission port.
Figure 14 is dual-linear polarization antenna feed array of the present invention in working frequency points 12.5GHz and 0 ° of azimuth plane and azimuth plane
Emulation array received directionality figure in 90 °.
Figure 15 is dual-linear polarization antenna feed array of the present invention in working frequency points 12.5GHz and 0 ° of azimuth plane and azimuth plane
Actual measurement array received directionality figure in 90 °.
Figure 16 is dual-linear polarization antenna feed array of the present invention in working frequency points 14.1GHz and 0 ° of azimuth plane and azimuth plane
Emulation array emitter directionality figure in 90 °.
Figure 17 is dual-linear polarization antenna feed array of the present invention in working frequency points 14.1GHz and 0 ° of azimuth plane and azimuth plane
Actual measurement array emitter directionality figure in 90 °.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, it is right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Dual-linear polarization antenna feed array component of the present invention is applied to the Cassegrain antenna shown in Fig. 1, Cassegrain day
Line is applied in communication in moving, which further includes primary reflector in addition to dual-linear polarization antenna feed array component
3.Dual-linear polarization antenna feed array component includes feed array 2, secondary reflecting element 1, stent.Feed array 2 is fixed on principal reflection
On the primary reflection surface of part 3, and the center of feed array 2 is placed on the focal point of Cassegrain antenna.
Secondary reflecting element 1 is installed on 2 overhead of feed array by stent, and stent can guarantee that the subreflector 75 of secondary reflecting element 1 is flat
Row is in feed array 2, and the center of subreflector 75 and the center of feed array 2 are located along the same line.
Please combine Fig. 2 in the lump, stent includes multiple location divisions 1, multiple location divisions 2 76, multiple supporting rods 78, multiple
Fastener 79.Quantity between location division 1, location division 2 76, supporting rod 78 this three is usually corresponding, in other realities
Apply in example, the quantity of location division 1 and location division 2 76 can be more than the quantity of supporting rod 78 respectively.Counted as fastener 79
Amount does not specially require, as long as fixed device can will be needed to fix, each device fixed when, can according to when
Between installation environment take the circumstances into consideration increase fastener.
These location divisions 1 are welded on subreflector 75, and using the center of subreflector 75 as the center of circle annular cloth
Office, these location divisions 2 76 are welded on the bottom surface 77 of mounting bracket 73, and using the center of feed array 2 as the center of circle annular cloth
Office, multiple location divisions 2 76 are corresponded with multiple location divisions 1 respectively, location division 2 76 and corresponding location division one 74
In on same plane, and place plane is perpendicular to subreflector 75.
One end of each supporting rod 78 is fixed therein on a location division 1, the opposite other end of each supporting rod 78
It is fixed therein on a location division 2 76, each supporting rod 78 is the laminated structure that repeatedly bends, the two of each supporting rod 78
End is oppositely arranged and is parallel to each other up and down.The structure design of supporting rod 78 reduces secondary reflecting element mounting bracket of the invention to secondary anti-
The influence of the reflecting properties of part 1 and the feedback performance of feed array 2 is penetrated, also reduces the influence to the primary reflection surface of antenna.Cause
This, uniform ring cloth is tried one's best on subreflector 75 in multiple location divisions 1, and uniform ring cloth is also tried one's best the bottom of in multiple location divisions 2 76
On face 77.
Fixed form of the supporting rod 78 by location division 1 on subreflector 75, supporting rod 78 pass through location division 2 76
Fixed form on bottom surface 77, ensure that the firm connection between feed array 2 and secondary reflecting element 1.Location division 1 is with pair
The center of reflecting surface 75 is the center of circle and annular layout, location division 2 76 using the center of feed array 2 as the center of circle annular layout, and
Location division 2 76, perpendicular to subreflector 75, can ensure that the pair of secondary reflecting element 1 is anti-with corresponding one 74 place plane of location division
Face 75 is penetrated parallel to feed array 2, and ensures that the center of subreflector 75 and the center of feed array 2 are located along the same line.
The one end in each 78 stationary positioned portion 1 of supporting rod can be extended in parallel along the edge of subreflector 75, extend pair
Bent downward after reflecting surface 75 and bent after extending to location division 2 76 and run parallel to corresponding location division two along bottom surface 77
76.In the present embodiment, the one end in each 78 stationary positioned portion 1 of supporting rod is extended in parallel along the edge of subreflector 75, is prolonged
Bend downward and extend vertically after stretching out subreflector 75, then bend and extend towards 2 76 direction of location division, extend to location division
Bent after 2 76 and run parallel to corresponding location division 2 76 along bottom surface 77.
Each supporting rod 78 is fixed on corresponding location division 1 by least one fastener 79.Each supporting rod 78 is logical
At least another fastener 79 is crossed to be fixed on corresponding location division 2 76.Fastener 79 can use screw, bolt, pin it
Class is used for fixed device.
Supporting rod 78 is advantageous in that the both ends of supporting rod 78 can be with location division 1, location division two for laminated structure
76 are preferably stably connected with.Supporting rod 78 is located at the same side of corresponding location division 1 and corresponding location division 2 76, and supporting rod
78 one of side and corresponding location division 1, corresponding location division 2 76 are affixed.The fixed form increase support being affixed
Contact area between the both ends and location division 1, location division 2 76 of bar 78.
Refering to Fig. 3 and Fig. 4, feed array 2 is using " Fabry Perot " antenna based on microband printing circuit board (PCB)
Form, including upper layer circuit board 16, middle layer circuit board 17 and bottom circuit board 18, upper layer circuit board 16, intermediate layer electricity
Locked between road plate 17 and bottom circuit board 18 by screw.Three layer circuit boards are to cover copper in the medium that dielectric constant is 3
Made on plate, wherein bottom circuit board 18 is the microstrip reflection plate with metal floor, and middle layer circuit board 17 is micro-strip form
Antenna structure, upper layer circuit board 16 for one piece serve strengthen directionality prefect dielectric plate.Upper layer circuit board 16, intermediate layer electricity
The thickness of road plate 17 and bottom circuit board 18 is respectively 3mm, 0.5mm and 1.5mm, and diameter is identical, is 54mm.Three layers of circuit
Plate is identical by four positions and the mounting hole of rotational symmetry is connected with each other, and the mounting hole pitch-row of diagonal position is 49mm, hole
Footpath 2mm.
Please refer to Fig. 5 and Fig. 6, the attached conductor in 18 bottom side of bottom circuit board, such as copper, and 4 are offered thereon
Mounting hole 4, and prolong and be radially provided with 4 power feed holes 5, the both sides of 4 power feed holes 5 of radial direction are also respectively provided with 2 power feed holes 5,
8 power feed holes 5 are set altogether, wherein four are presented mouth for transmitting antenna, four are presented mouth for reception antenna.SSMA interfaces 24 pass through feedback
Electric eyelet welding is connected on bottom circuit board 18, and upper and lower side stretches out bottom circuit board 18, and hollow copper platform 6 is welded on bottom by power feed hole
The upper end of layer circuit board 18, and cover on the inner core of SSMA interfaces 24.The master that Cassegrain antenna is fixed on when feed array 2 is anti-
When penetrating on part 3, there is waist hole gasket 22 between feed array 2 and primary reflector 3, specifically, the both ends difference of waist hole gasket 22
Through hole is offered, waist hole gasket 22 is locked on bottom circuit board 18 by one of through hole screw.
It is the structure diagram of middle layer circuit board 17 please refer to Fig. 7, Fig. 8 and Fig. 9, wherein Fig. 7 is top view,
Fig. 8 is look up figure, and Fig. 9 is side cutaway view.4 mounting holes 7, and intermediate layer electricity are offered on the middle layer circuit board 17
The positive and negative of road plate 17 is divided into 4 regions, the structure all same in positive each region, and design parameter slightly has difference, reverse side
Each region structure also all same, design parameter also slightly has difference.Assembled for ease of processing, each region of positive and negative is equal
Open up 1 dielectric-slab windowing 11.For influence of the isolation surface wave to directional diagram, the positive and negative of middle layer circuit board 17 passes through
Trellis metal band circuit 14 with certain opening structure 172 is divided into 4 regions, the trellis metal band circuit of positive and negative
14 by plated-through hole (not shown) mutual conduction.Here, it is in order to avoid shape opening to be introduced on trellis metal band circuit 14
Into the resonator of closing, in order to avoid deteriorate the matching properties of antenna.By the setting to plated-through hole structure, and in circuit board
It is middle to use 14 cut zone of trellis metal band circuit, and the table in medium has been isolated in the setting of trellis metal band circuit 14
Surface wave, so that the mutual coupling between reducing array element.
The front in each region be provided with the metal dipole respectively as reception antenna 9, reception antenna feed pad 10,
Transmitting antenna feed pad 8, the back side in each region are provided with the metal dipole as transmitting antenna 13.Reception antenna is fed
Pad 10 is connected with reception antenna 9, and transmitting antenna feed pad 8 is connected with transmitting antenna 13, the reception of positive and negative corresponding region
Antenna 9 and transmitting antenna 13 are arranged in a crossed manner at an angle of 90, reception antenna 9 and transmitting antenna 13 work in transmit/receive respectively (downlink/on
OK) frequency range, dipoles scatter minor structure arranged in a crossed manner can correspond to two quadrature linear polarizations realized required by transmitting/receiving, reception antenna 9
It is adjustable with the brachium of transmitting antenna 13.For convenient welding, reception antenna feed pad 10, transmitting antenna feed pad 8 are arranged on
Side.It is in the design that two at same position are even further to reduce feed structure to isolating caused influence between transmitting/receiving
Reception antenna 9 and transmitting antenna 13 at pole minor structure, that is, same position positioned at circuit board positive and negative pass through one section of printing thin wire
It is connected, while is additionally provided with the type metal disk 12 for improving transceiver channel isolation.The diameter of rosette 12 is about 0.05 λ
~0.2 λ, near the apex angle for the rectangular element being divided into positioned at metal band 14, the centre-to-centre spacing of rosette 12 surrounds corresponding top
The distance on two sides at angle is each about the λ of 0.15 λ~0.35.λ is the free space wavelength corresponding to working frequency.Should by adjusting
The parameters such as the length of thin wire, thickness and the size and location of rosette 12 can be offseted means and be realized using suitable
High isolation between transmitting/receiving.
Reception antenna 9 and transmitting antenna 13 in structure realize bottom coaxial feed by SSMA interfaces 24.Wherein
The two-arm of reception antenna 9 and transmitting antenna 13 passes through one section of printing thin wire with the inner core and outer wall of SSMA interfaces 24 respectively
It is connected.Here use and be to reduce influence of the feed structure between transmitting/receiving isolating the reason for thin wire.
Please refer to Figure 10 and Figure 11,4 mounting holes 15 are offered on upper layer circuit board 16, upper layer circuit board 16 is to cover
The prefect dielectric plate that copper coin all etches away, is the superstructure for forming " Fabry Perot ".
As preferable connection mode, 4 nylon studs one are equipped between upper layer circuit board 16 and middle layer circuit board 17
The intermediate shaft hole of 20,4 nylon studs 1 is respectively aligned to mounting hole 15 and middle layer circuit board 17 on layer circuit board 16
On mounting hole 7.4 nylon studs, 2 21,4 nylon studs two are equipped between middle layer circuit board 17 and bottom circuit board 18
21 intermediate shaft hole is respectively aligned to the mounting hole 4 on the mounting hole 7 and bottom circuit board 18 on middle layer circuit board 17.4 Buddhist nuns
Imperial screw 1 is from precession nylon stud one after the mounting hole 15 that upper 16 top of layer circuit board is passed down through on upper layer circuit board 16
In 20,4 nylon screws 2 23 are upward from the bottom of bottom circuit board 18, sequentially pass through mounting hole 4 on bottom circuit board 18,
After mounting hole 7 on 4 nylon studs 2 21, middle layer circuit board 17 in precession nylon stud 1, so that upper layer circuit board
16th, middle layer circuit board 17 and bottom circuit board 18 are fixed together.
In the feed structure, the spacing of medium substrate has direct shadow to the bandwidth of operation of structure and radiation gain
Ring.Wherein, the suitable of middle layer circuit board 17 and bottom circuit board 18 is spaced about the λ of 0.1 λ~0.3, and λ is right for working frequency
The free space wavelength answered.When both spacing are too small, the gain of feed structure is higher, but overall work bandwidth is narrow；
When both spacing are excessive, the gain of feed structure is too low, narrower bandwidth, and feed physical arrangement will be larger.On in addition,
The suitable of layer circuit board 16 and middle layer circuit board 17 is spaced about the λ of 0.3 λ~0.7.When both spacing are excessive or too small
When, it can make it that the gain of feed structure is too low, bandwidth of operation is relatively narrow.In the feed array structure, by adjusting nylon spiral shell
The height of bolt can be in corresponding adjusting between layer circuit board 16, middle layer circuit board 17 and bottom circuit board 18 spacing, thus
Can convenient adjustment structure radiation gain to adapt to the demand from different reflecting surface sizes and focal length.
In addition, the brachium by adjusting metal dipole, the working frequency of adjustable structure.Due to arrangement works with it is higher
Frequency, the medium substrate in structure need to have good high frequency characteristics.The dielectric constant of medium substrate, thickness in the feed structure
And the parameter such as spacing is respectively provided with overall work frequency range, bandwidth of operation, gain and inter-element mutual coupling of structure etc. significantly
Influence, need to carry out comprehensive design emphatically in actual design and optimize and revise.
When making, its production method comprises the following steps the dual-linear polarization antenna of the present invention.
Step 1, feed array 2 is inserted into slot 73.
Step 2, multiple location divisions 1 are welded on subreflector 75, and using the center of subreflector 75 as circle
The heart and annular layout.
Step 3, multiple location divisions 2 76 are welded on the bottom surface 77 of slot 73, and using the center of feed array 2 as circle
The heart and annular layout, multiple location divisions 2 76 are corresponded with multiple location divisions 1 respectively, location division 2 76 with it is corresponding calmly
Position portion 1 is in the same plane, and place plane is perpendicular to subreflector 75.
Step 4, one end of each supporting rod 78 is fixed therein on a location division 1, opposite other end is fixed
Wherein on a location division 2 76；The both ends of each supporting rod 78 are oppositely arranged and are parallel to each other up and down, wherein, primary reflector
3 center, the center of feed array 2, the center of secondary reflecting element 1 are located along the same line.
Step 2 can do opposite adjustment, can be welded on subreflector 75 by multiple location divisions 1 to four
Afterwards, first one end of each supporting rod 78 is fixed therein on a location division 1, secondary reflecting element 1, location division 1, branch
Strut 78 is assembled again after forming an entirety, and convenient installation reduces assembling tolerance at the same time.Then, by multiple location divisions 2 76
After being welded on the bottom surface 77 of slot 73, then the opposite other end of each supporting rod 78 is fixed therein a location division two
On 76.In other embodiments, base 711, column 712, location division 2 76, slot 73 first can also be formed an entirety.
When feed array 2 is made, the production method of feed array 2 comprises the following steps：
The intermediate shaft hole of nylon stud 1 is respectively aligned to mounting hole 15 and middle layer circuit board on layer circuit board 16
Mounting hole 7 on 17；
The intermediate shaft hole of nylon stud 2 21 is respectively aligned to mounting hole 7 and bottom circuit board 18 on middle layer circuit board 17
On mounting hole 4；
Nylon screw 1 is from precession after the mounting hole 15 that upper 16 top of layer circuit board is passed down through on upper layer circuit board 16
In nylon stud 20；
Nylon screw 2 23 is upward from the bottom of bottom circuit board 18, sequentially pass through mounting hole 4 on bottom circuit board 18,
After mounting hole 7 on several nylon studs 21, middle layer circuit board 17 in precession nylon stud 20, so that upper layer circuit board
16th, middle layer circuit board 17 and bottom circuit board 18 are fixed together.
Figure 12 and Figure 13 is emulation and the test return loss knot of the dual-linear polarization antenna feed array of the embodiment of the present invention 1
Fruit is schemed, wherein：(its middle port 1, port 3, port 5, port 7 be receiving port, and port 2, port 4, port 6, hold for Figure 12 emulation
Mouth 8 is emission port)；Figure 13 is received to survey with emission port.It can be seen from the above that receiving port and emission port echo exist respectively
It is less than -10dB in the range of 12.25GHz~12.75GHz and 13.75GHz~14.5GHz, has reached matched well.
Figure 14 and Figure 15 is the dual-linear polarization antenna feed array of the embodiment of the present invention 1 in the imitative of working frequency points 12.5GHz
True and actual measurement array received directionality figure, wherein：Simulation result in 90 ° of 0 ° of Figure 14 azimuth planes and azimuth plane；0 ° of Figure 15 azimuth planes
With measured result in 90 ° of azimuth plane.It can be seen from the above that when working in 12.5GHz, antenna is 15dB in the gain of zenith direction, secondary
Valve (emulation)/18dB (actual measurement) lower 10dB than main lobe.
Figure 16 and Figure 17 is the dual-linear polarization antenna feed array of the embodiment of the present invention 1 in the imitative of working frequency points 14.1GHz
True and actual measurement array emitter directionality figure, wherein：Simulation result in 90 ° of 0 ° of Figure 16 azimuth planes and azimuth plane；0 ° of Figure 17 azimuth planes
With measured result in 90 ° of azimuth plane.It can be seen from the above that when working in 14.1GHz, antenna is 15dB in the gain of zenith direction, secondary
Valve (emulation)/10dB (actual measurement) lower 11dB than main lobe.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of dual-linear polarization antenna feed array component, it includes feed array (2), secondary reflecting element (1), by secondary reflecting element
(1) stent in feed array (2) overhead is installed on, stent ensures the subreflector (75) of secondary reflecting element (1) parallel to feed battle array
Arrange (2), and the center of subreflector (75) and the center of feed array (2) are located along the same line；
It is characterized in that,
The pair reflecting element mounting bracket includes multiple location divisions one (74), multiple location divisions two (76), multiple supporting rods (78)；
Wherein, multiple location divisions one (74) are welded on subreflector (75), and using the center of subreflector (75) as the center of circle ring
Shape is laid out；Multiple location divisions two (76) are welded on the bottom surface (77) of mounting bracket (73), and using the center of feed array (2) as
The center of circle and annular layout, multiple location divisions two (76) correspond with multiple location divisions one (74) respectively, location division two (76) with
Corresponding location division one (74) is in the same plane, and place plane is perpendicular to subreflector (75)；Each supporting rod (78)
One end be fixed therein on a location division one (74), the opposite other end of each supporting rod (78) be fixed therein one it is fixed
In position portion two (76)；Each supporting rod (78) is the laminated structure repeatedly bent, and the both ends of each supporting rod (78) are opposite up and down
Set and be parallel to each other；
Feed array (2) includes upper layer circuit board (16), middle layer circuit board (17) and bottom circuit board (18), upper strata circuit
It is spaced fixed between plate (16), middle layer circuit board (17) and bottom circuit board (18) and is parallel to each other；Bottom circuit board
(18) it is the microstrip reflection plate with metal floor, offers several transmitting antennas feedback mouth and reception antenna feedback mouth thereon；It is middle
Layer circuit board (17) is the antenna structure of micro-strip form, its positive and negative is if being divided into by trellis metal band circuit (14)
Dry region, the trellis metal band circuit (14) of positive and negative is by plated-through hole mutual conduction；Upper layer circuit board (16) is one
Block dielectric-slab；The attached conductor in bottom side of bottom circuit board (18).
2. dual-linear polarization antenna feed array component as claimed in claim 1, it is characterised in that：Each supporting rod (78) is fixed
One end of location division one (74) is extended in parallel along the edge of subreflector (75), is bent downward simultaneously after extending subreflector (75)
Location division two (76) is extended to bend afterwards and run parallel to corresponding location division two (76) along bottom surface (77).
3. dual-linear polarization antenna feed array component as claimed in claim 1, it is characterised in that：Each supporting rod (78) is fixed
One end of location division one (74) is extended in parallel along the edge of subreflector (75), is bent downward simultaneously after extending subreflector (75)
Extend vertically, then bend and extend towards location division two (76) direction, extend to location division two (76) and bend afterwards and along bottom surface (77)
Run parallel to corresponding location division two (76).
4. dual-linear polarization antenna feed array component as claimed in claim 1, it is characterised in that：The pair reflecting element installation branch
Frame further includes multiple fasteners, and each supporting rod (78) is fixed on corresponding location division one (74) by least one fastener,
Also it is fixed on by least another fastener on corresponding location division two (76).
5. dual-linear polarization antenna feed array component as claimed in claim 4, it is characterised in that：Supporting rod (78) is positioned at corresponding
Location division one (74) and the same side of corresponding location division two (76), and one of side of supporting rod (78) and corresponding location division
One (74), corresponding location division two (76) are affixed.
6. dual-linear polarization antenna feed array component as claimed in claim 1, it is characterised in that：Bottom circuit board prolongs on (18)
4 power feed holes (5) are radially provided with, the both sides of 4 power feed holes (5) of radial direction are also respectively provided with 2 power feed holes (5), Zong Gongshe
8 power feed holes (5) are put, wherein four are presented mouth for transmitting antenna, four are presented mouth for reception antenna.
7. dual-linear polarization antenna feed array component as claimed in claim 1, it is characterised in that：On bottom circuit board (18)
Weld SSMA interfaces (24), the upper and lower sides of SSMA interfaces (24) stretches out bottom circuit board (18), on middle layer circuit board (17)
Reception antenna (9) and the two-arm of transmitting antenna (13) pass through one section of print with the inner cores of SSMA interfaces (24) and outer wall respectively
Brush thin wire is connected.
8. dual-linear polarization antenna feed array component as claimed in claim 1, it is characterised in that：Middle layer circuit board (17) is every
The front in a region is provided with the metal dipole respectively as reception antenna (9), reception antenna feed pad (10), transmitting day
Line feed pad (8), the back side in each region are provided with the metal dipole as transmitting antenna (13), reception antenna feed weldering
Disk (10) is connected with reception antenna (9), and transmitting antenna feed pad (8) is connected with transmitting antenna (13), positive and negative corresponding region
Reception antenna (9) and transmitting antenna (13) it is arranged in a crossed manner at an angle of 90.
9. dual-linear polarization antenna feed array component as claimed in claim 1, it is characterised in that：Upper layer circuit board (16) and in
Between several nylon studs one (20), the intermediate shaft hole difference of several nylon studs one (20) are equipped between layer circuit board (17)
The mounting hole (7) on mounting hole (15) and middle layer circuit board (17) in alignment on layer circuit board (16), middle layer circuit board
(17) several nylon studs two (21), the jackshaft of several nylon studs two (21) are equipped between bottom circuit board (18)
Hole is respectively aligned to the mounting hole (4) on the mounting hole (7) and bottom circuit board (18) on middle layer circuit board (17).
10. dual-linear polarization antenna feed array component as claimed in claim 9, it is characterised in that：Pass through several nylon spiral shells
One (19) of silk are passed down through mounting hole (15) on upper layer circuit board (16) precession nylon spiral shell afterwards from upper layer circuit board (16) top
Column one (20) is inner, upward from the bottom of bottom circuit board (18) by several nylon screws two (23), sequentially passes through bottom electricity
The mounting hole (7) on mounting hole (4), several nylon studs two (21), middle layer circuit board (17) on road plate (18) revolves afterwards
It is inner into nylon stud one (20), so that upper layer circuit board (16), middle layer circuit board (17) and bottom circuit board (18) are fixed
Together.
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| CN201711417668.6A CN107978840B (en) | 2017-12-25 | 2017-12-25 | Dual-polarized antenna feed source array assembly |
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| CN201711417668.6A CN107978840B (en) | 2017-12-25 | 2017-12-25 | Dual-polarized antenna feed source array assembly |
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| CN112151967A (en) * | 2019-06-26 | 2020-12-29 | 合肥若森智能科技有限公司 | Luneberg lens antenna |
| CN112467366A (en) * | 2020-08-24 | 2021-03-09 | 西安空间无线电技术研究所 | Near-field low-interference satellite-borne microstrip feed source assembly |
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| CN107978840B (en) | 2023-10-17 |
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