CN206451807U - Feed and antenna system - Google Patents
Feed and antenna system Download PDFInfo
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- CN206451807U CN206451807U CN201720017142.8U CN201720017142U CN206451807U CN 206451807 U CN206451807 U CN 206451807U CN 201720017142 U CN201720017142 U CN 201720017142U CN 206451807 U CN206451807 U CN 206451807U
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- waveguide
- face
- feed
- subreflector
- rear end
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Abstract
This application discloses feed and antenna system.The feed includes：Waveguide, for transmitting electromagnetic wave and as the electromagnetic wave of primary radiation source offer primary radiation；Subreflector, the electromagnetic wave for reflecting the primary radiation；And media header, for connecting the waveguide and the subreflector, wherein, the waveguide includes tube wall and its centre bore surrounded, and the centre bore is extended longitudinally, and the waveguide also includes the multiple lateral loops being located on tube wall.
Description
Technical field
The utility model is related to antenna technology, particularly feed and the antenna system comprising feed.
Background technology
Antenna system includes metal mirror and feed.Feed is the primary radiator of antenna system, for by electric signal
It is converted into electromagnetic wave.According to the type of antenna, antenna system can include one or more reflectings surface.In emission state, feed
The electromagnetic wave of generation forms the narrow beam radiated into air after metal mirror reflection.For example, in parabola antenna
In, the spherical wave of feed transmitting is to be transformed into plane wave after parabolic reflector, along parabola axial radiation narrow beam.
However, needing to be arranged on feed using feed source bracket on the correct position of reflecting surface in existing antenna system.
If feed is not arranged at parabolic focus exactly, it will cause aperture efficiency to decline.In addition, for positive feedback formula parabola day
Line, by the electromagnetic wave of parabolic reflector is blocked in parabola center by feed, so as to be invalid part.If feed
Directional diagram in 0 ° of directive gain height, then can reduce the aperture efficiency of antenna system.
Therefore, it is desirable to further improve the structure of feed to improve antenna radiation efficiency and be easily installed and debug.
Utility model content
In view of this, the purpose of this utility model is to provide feed and antenna system, to solve skill of the prior art
Art problem.
According to one side of the present utility model, there is provided a kind of feed, it is characterised in that including：Waveguide, for transmitting electricity
Magnetic wave and the electromagnetic wave that primary radiation is provided as primary radiation source；Subreflector, the electromagnetism for reflecting the primary radiation
Ripple；And media header, for connecting the waveguide and the subreflector, wherein, the waveguide includes tube wall and its enclosed
Around centre bore, the centre bore extends longitudinally, and the waveguide also includes the multiple lateral loops being located on tube wall.
Preferably, the front end of the waveguide includes the first opening so that the rear end of the media header may be inserted into described
In the centre bore of waveguide, the rear end of the waveguide includes the second opening, for connecting the transceiver of outside to transmit electricity
Signal.
Preferably, the waveguide also includes being used to be connected to the flange of the primary reflection surface of antenna, and the flange is located at institute
State the rear end of waveguide.
Preferably, the multiple lateral loops are parallel to each other, and the rear end of the neighbouring waveguide.
Preferably, on the direction of the waveguide from front to back, the size constant of the centre bore, and it is described
The thickness two of tube wall, which is tucked inside the sleeve, gradually to be increased.
Preferably, the multiple lateral loops are integrally formed with the tube wall.
Preferably, the media header includes the front end face for being connected with the subreflector and is connected with the waveguide
Rear end face.
Preferably, the front end face of the media header includes taper hole area, and the rear end face of the media header is different including diameter
The blind hole being continuously formed through of multiple circular hole formation is described more on rear end face to the direction of front end face of the media header
The diameter of individual circular hole is gradually reduced.
Preferably, the subreflector includes front end face and rear end face, the rear end face of the subreflector and the medium
The front end face matching connection of head.
Preferably, the front end face of the subreflector is smooth circular surface.
Preferably, the rear end face of the subreflector includes outer peripheral dentation area and middle pyramidal area, described secondary anti-
Penetrate the pyramidal area in face and the taper hole area form fit of the media header.
Preferably, lightening hole is offered on the front end face of the subreflector.
According to another aspect of the present utility model, there is provided a kind of antenna system, it is characterised in that including：Primary reflection surface, is used
In radiation or convergence electromagnetic wave；Above-mentioned feed；And support, for supporting the primary reflection surface, wherein, the feed is from institute
The focal position for stating primary reflection surface extends through the primary reflection surface and reaches its back side.
Preferably, the feed is fixed on the primary reflection surface.
Preferably, the primary reflection surface is the burnt parabola of ring.
According to the feed of the utility model embodiment, waveguide is additionally included in the multiple lateral loops formed on the tube wall of bottom.
Thus, at least a portion waveguide constitutes bellows.The multiple lateral loops are used to reduce surface wave, make 0 ° of side of feed directional diagram
When to decline, being blocked so as to reduce subreflector to reflection electromagnetic wave, and avoiding feed and the reflecting surface from being installed together pair
The adverse effect of the efficiency of transmission of electromagnetic wave.The feed can improve the entire gain of antenna system.
According to the antenna system of the embodiment, feed extends up to the back side of reflecting surface from the focal position of reflecting surface, and
And be mounted directly on the reflecting surface.The feed source bracket that the feed of the antenna system need not be added, is easily installed and debugs.
Brief description of the drawings
By description referring to the drawings to the utility model embodiment, of the present utility model above-mentioned and other mesh
, feature and advantage will be apparent from, in the accompanying drawings：
Fig. 1 shows the structural representation of the antenna system according to the utility model embodiment；
Fig. 2 shows the stereogram of the feed used in the antenna system according to the utility model embodiment；
Fig. 3 shows the sectional view of the feed used in the antenna system according to the utility model embodiment；
Fig. 4 shows Direction Pattern Simulation result of the feed under a frequency shown in Fig. 2；
Fig. 5 shows Direction Pattern Simulation result of the feed under another frequency shown in Fig. 2.
Embodiment
The utility model is more fully described hereinafter with reference to accompanying drawing.In various figures, identical element is using similar
Reference represent.For the sake of clarity, the various pieces in accompanying drawing are not necessarily to scale.Furthermore, it is possible to not shown
Some known parts.
It should be appreciated that when describing some structure, being referred to as being located at another layer, another region when by one layer, a region
When " above " or " top ", can refer to above another layer, another region, or its with another layer, another
Also comprising other layers or region between region.Also, if the structure overturn, this layer, a region will be located at it is another
Layer, another region " following " or " lower section ".If in order to describe located immediately at another layer, another region above scenario,
The form of presentation of " A is directly on B " or " A is on B and abuts therewith " will be used herein.
The utility model can be presented in a variety of manners, some of examples explained below.
By description referring to the drawings to the utility model embodiment, of the present utility model above-mentioned and other mesh
, feature and advantage will be apparent from, in the accompanying drawings：
Fig. 1 shows the structural representation of the antenna system according to the utility model embodiment.The antenna system 1000 includes
Feed 100, reflecting surface 200 and support 220.The focal position of feed 100 from reflecting surface 200 extends through reflecting surface 200, arrives
Up to the back side of reflecting surface.Reflecting surface 200 is arranged on support 220.
Support 220 is used for the deadweight for supporting antenna system.Further, the support 220 can be also used for install distribution box,
Motor and drive mechanism.Antenna system can be according to control signal rotating feed 100 and reflecting surface 200, so as to change antenna
Main radiation direction.
Reflecting surface 200 is shaped as parabola.For example, reflecting surface 200 is rotated by 360 ° by parabola and obtained, wherein parabola
Equation be y=x2/ 4f, f are parabola focal length.Preferably, there is the ring that radius is r burnt at parabola center.It is paraboloidal to make
With being that the electromagnetic wave that feed gives off is reflected and converged.Reflecting surface 200 is for example made up of aluminium alloy plate, and thickness is, for example,
1.5mm-3mm, or main body is constituted by fiberglass or carbon fiber, then in body surfaces adhesiving metal paper tinsel, wire netting or metal
Grid.The size of mesh is related to the wavelength of operating frequency of antenna.For example, the full-size of mesh is less than λ/8~λ/10, wherein, λ
It is the wavelength of operating frequency of antenna.If mesh is oversized, electromagnetic wave penetrates readily through reflecting surface, causes antenna can not be just
Often work.
Feed 100 is the primary radiator of antenna system, for converting the electrical signal to electromagnetic wave.One end of feed 100
It is connected to transceiver.In emission state, transceiver produces electric signal, via the front end face of waveguide transmissions to feed 100.
Different according to the type of antenna, the electromagnetic wave that the front end face of feed 100 is produced directly is radiated to reflecting surface 200, or via pair
Reflective surface is to reflecting surface 200, then via reflecting surface 200 to space radiation.In parabola antenna, feed 100 is launched
Spherical wave reflected through paraboloidal reflecting surface 200 after to be transformed into plane wave, along parabola axial radiation narrow beam.Connecing
Receipts state, the electromagnetic wave of the collection space of reflecting surface 200 transmission.Different according to the type of antenna, reflecting surface 200 is direct by electromagnetic wave
The front end face of feed 100 is converged to, or first converges to subreflector, the front end of feed 100 is then focused to by subreflector
Face, via waveguide transmissions to transceiver and is converted into electric signal.
It is different from the antenna system of prior art, according to the feed 100 of the antenna system of the embodiment from reflecting surface 200
Focal position extend up to the back side of reflecting surface, and be directly installed on reflecting surface 200.The feed of the antenna system 1000
100 feed source brackets that need not be added, are easily installed and debug.
Fig. 2 and 3 is shown respectively the stereogram of the feed used in the antenna system according to the utility model embodiment and cut
Face figure.Feed 100 includes subreflector 110, media header 120 and waveguide 130.In this embodiment, waveguide 130 is as just
Level radiation source, the electromagnetic wave for providing primary radiation, subreflector 100 is as primary event face, for reflecting primary radiation
Electromagnetic wave.As illustrated, waveguide 130 is included in the lateral loops 132 formed on the tube wall of bottom.Thus, at least a portion ripple
Conduit 130 constitutes bellows.
Subreflector 110 includes the high impedance surface being made up of one group of circular ring metal tooth.The front end face of subreflector 110
111 be substantially flat circle, and rear end face includes outer peripheral dentation area 112 and middle pyramidal area 113.Subreflector 110
Surface impedance it is related to the tooth depth in dentation area 112.Therefore, the size and shape of subreflector 110 will influence to reflect electromagnetism
The spatial distribution of wave amplitude and phase.The each several part size of subreflector 110 can be obtained by genetic algorithm optimization.Pair reflection
The material therefor of face 110 is, for example, aluminium.
Media header 120 plays a part of to support and connect subreflector 110 and waveguide 130 in structure.On electrical property
Also by the standing wave for influenceing feed, main polarization amplitude and phase pattern with cross polar component.The front end face of media header 120
121 be taper hole area, is matched with the pyramidal area 113 of subreflector 110.The center of waveguide 130 is inserted in the rear end of media header 120
Kong Zhong.Further, the rear end face 122 of media header 120 includes the different circular hole of multiple diameters, many since rear end face 122
The individual continuous insertion of circular hole, and diameter is gradually reduced, and forms blind hole.The multiple circular hole plays a part of impedance matching.Hole
Diameter and length can be obtained by genetic algorithm optimization.Media header 120 is good by dielectric constant stabilization, low-loss, mechanical performance
Good solid medium material is constituted.For example, media header 120 can be by selected from ceramics, FR4, F4B (polytetrafluoroethylene (PTFE)), HDPE
(high density polyethylene (HDPE), High Density Polyethylene), ABS (Acrylonitrile Butadiene Styrene)
In a kind of material composition.
Waveguide 130 plays a part of primary radiation source in antenna system.Waveguide 130 is shaped as hollow circular tube,
Including tube wall 131 and its centre bore surrounded.The front end 135 of waveguide 130 includes opening so that the rear end of media header 120 can
To insert in the centre bore of waveguide 130.The rear end 134 of waveguide 130 includes opening, so as to be connected with transceiver
Connect.Although not shown, however, the rear end 134 of waveguide 130 can also include additional flange, for waveguide 130 to be fixed
On reflecting surface 200.Material used in waveguide 130 is, for example, aluminium, and can be metal forming part.
Different from the feed of prior art, according in the feed 100 of the embodiment, waveguide 130 is additionally included in lower tube
The multiple lateral loops 132 formed on wall.Thus, at least a portion waveguide 130 constitutes bellows.The multiple lateral loops 132
It is spaced apart preset distance.In this embodiment, the multiple lateral loops 132 and the tube wall 131 of waveguide 130 are integrally formed.
In alternative embodiment, the part that the multiple lateral loops 132 are independently formed, and fixed using modes such as screw or welding
On the tube wall 131 of waveguide 130.The multiple lateral loops 132 are used to reduce surface wave, so as to improve the biography of electromagnetic wave
Defeated efficiency, and adverse effect when avoiding waveguide 130 and the reflecting surface 120 from being installed together to the efficiency of transmission of electromagnetic wave.
Preferably, the size constant of the centre bore of waveguide 130, the thickness of tube wall 131 from its front end to rear end by
It is cumulative to add.The structure is conducive to mitigating the deadweight of waveguide, while providing enough mechanical support effects for whole feed.
The Direction Pattern Simulation result of feed at different frequencies shown in Fig. 2 is shown respectively in Figure 4 and 5, wherein being shown respectively
Along the gain of different directions in the case of working frequency is 12.5GHz and 14.25GHz.As shown in Figures 4 and 5, in working frequency
In the case of for 12.5Ghz and 14.25GHz, there is obvious depression in 0 ° of direction of directional diagram, so that it is anti-to master to reduce subreflector
Penetrate blocking for face reflection electromagnetic wave.Bottom addition lateral loops according to the feed of the embodiment in waveguide are used to reduce surface
Ripple, so that the directional diagram of feed reduces in 0 ° of directive gain, so as to improve the entire gain of feed reflector antenna, reduces
First secondary lobe and far field secondary lobe.The feed can also reduce cross-polarization levels, and realize wider frequency band.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Nonexcludability is included, so that process, method, article or equipment including a series of key elements not only will including those
Element, but also other key elements including being not expressly set out, or also include being this process, method, article or equipment
Intrinsic key element.In the absence of more restrictions, the key element limited by sentence "including a ...", it is not excluded that
Also there is other identical element in process, method, article or equipment including the key element.
Finally it should be noted that：Obviously, above-described embodiment is only intended to clearly illustrate the utility model example,
And the not restriction to embodiment.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no necessity and possibility to exhaust all the enbodiments.And thus
Among the obvious changes or variations amplified out is still in protection domain of the present utility model.
Claims (15)
1. a kind of feed, it is characterised in that including：
Waveguide, for transmitting electromagnetic wave and as the electromagnetic wave of primary radiation source offer primary radiation；
Subreflector, the electromagnetic wave for reflecting the primary radiation；And
Media header, for connecting the waveguide and the subreflector,
Wherein, the waveguide includes tube wall and its centre bore surrounded, and the centre bore is extended longitudinally, and the waveguide is also
Including multiple lateral loops on tube wall.
2. feed according to claim 1, it is characterised in that the front end of the waveguide includes the first opening so that institute
The rear end for stating media header may be inserted into the centre bore of the waveguide, and the rear end of the waveguide includes the second opening, is used for
Transceiver outside connection is to transmit electric signal.
3. feed according to claim 2, it is characterised in that the master that the waveguide also includes being used to be connected to antenna is anti-
The flange in face is penetrated, the flange is located at the rear end of the waveguide.
4. feed according to claim 2, it is characterised in that the multiple lateral loops are parallel to each other, and it is neighbouring described
The rear end of waveguide.
5. feed according to claim 2, it is characterised in that described on the direction of the waveguide from front to back
The thickness two of tube wall, which is tucked inside the sleeve, gradually to be increased.
6. feed according to claim 2, it is characterised in that the multiple lateral loops are integrally formed with the tube wall.
7. feed according to claim 2, it is characterised in that the media header includes being used to be connected with the subreflector
Front end face and the rear end face that is connected with the waveguide.
8. feed according to claim 7, it is characterised in that the front end face of the media header includes taper hole area, is given an account of
The rear end face of matter head includes the blind hole being continuously formed through of the different multiple circular holes formation of diameter, in the rear end of the media header
On face to the direction of front end face, the diameter of the multiple circular hole is gradually reduced.
9. feed according to claim 8, it is characterised in that the subreflector includes front end face and rear end face, described
The rear end face of subreflector is connected with the front end face matching of the media header.
10. feed according to claim 9, it is characterised in that the front end face of the subreflector is smooth circular table
Face.
11. feed according to claim 9, it is characterised in that the rear end face of the subreflector includes outer peripheral tooth
Shape area and middle pyramidal area, the taper hole area form fit of the pyramidal area of the subreflector and the media header.
12. offer lightening hole on feed according to claim 10, the front end face of the subreflector.
13. a kind of antenna system, it is characterised in that including：
Primary reflection surface, for radiating or converging electromagnetic wave；
Feed according to any one of claim 1 to 12；And
Support, for supporting the primary reflection surface,
Wherein, the focal position of the feed from the primary reflection surface extends through the primary reflection surface and reaches its back side.
14. antenna system according to claim 13, it is characterised in that the feed is fixed on the primary reflection surface.
15. antenna system according to claim 13, it is characterised in that the primary reflection surface is the burnt parabola of ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720017142.8U CN206451807U (en) | 2017-01-06 | 2017-01-06 | Feed and antenna system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720017142.8U CN206451807U (en) | 2017-01-06 | 2017-01-06 | Feed and antenna system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206451807U true CN206451807U (en) | 2017-08-29 |
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ID=59670848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720017142.8U Expired - Fee Related CN206451807U (en) | 2017-01-06 | 2017-01-06 | Feed and antenna system |
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| Country | Link |
|---|---|
| CN (1) | CN206451807U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571532A (en) * | 2019-09-27 | 2019-12-13 | 上海航天测控通信研究所 | circular focus paraboloid backfire antenna |
-
2017
- 2017-01-06 CN CN201720017142.8U patent/CN206451807U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110571532A (en) * | 2019-09-27 | 2019-12-13 | 上海航天测控通信研究所 | circular focus paraboloid backfire antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191018 Address after: 518057 2nd Floor, No. 9 Software Building, Zhongxin Road, Yuehai Street, Nanshan District, Shenzhen City, Guangdong Province Co-patentee after: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. Patentee after: Shenzhen Guangqi Hezhong Technology Co., Ltd. Address before: Bantian street Shenzhen city Guangdong province 518000 Jihua Road, the new world Huasai Industrial Area No. 2, building 101 (two floor) 201 Co-patentee before: Shenzhen Kuang-Chi Innovation Technology Co., Ltd. Patentee before: SHENZHEN CHAOJI DATA CHAIN TECHNOLOGY CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170829 Termination date: 20210106 |
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| CF01 | Termination of patent right due to non-payment of annual fee |