CN206947541U - One kind mixing big axle of excipient is than elliptical beam antenna - Google Patents
One kind mixing big axle of excipient is than elliptical beam antenna Download PDFInfo
- Publication number
- CN206947541U CN206947541U CN201720630090.1U CN201720630090U CN206947541U CN 206947541 U CN206947541 U CN 206947541U CN 201720630090 U CN201720630090 U CN 201720630090U CN 206947541 U CN206947541 U CN 206947541U
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- Prior art keywords
- outer ring
- annular inner
- inner portion
- ring portion
- excipient
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Abstract
The utility model discloses one kind mixing big axle of excipient than elliptical beam antenna, belong to technical field of satellite communication.The utility model antenna includes primary reflection surface and subreflector, primary reflection surface includes the first outer ring portion and the first annular inner portion, subreflector includes the second outer ring portion and the second annular inner portion, the line of demarcation and the line of demarcation of the second outer ring portion and the second annular inner portion of first outer ring portion and the first annular inner portion are ellipse, first outer ring portion and the second outer ring portion form oval excipient Cassegrain antenna structure, first annular inner portion and the second annular inner portion form oval excipient ring-focus antenna structure, second outer ring portion and the second annular inner portion single order at line of demarcation are continuous.The utility model overcomes the shortcomings that various excipient elliptical beam antennas in the prior art, has the advantages that high efficiency, low sidelobe, low standing wave, low section, big axle ratio etc., is a kind of important improvement to prior art.
Description
Technical field
Technical field of satellite communication is the utility model is related to, particularly relates to a kind of mixing big axle of excipient than elliptical beam day
Line.
Background technology
In satellite communication field, excipient dual reflector antenna technology is the main flow direction studied at present, and this antenna can
To form elliptical beam, there is low section, efficient feature.
Excipient dual reflector antenna of the prior art mainly has four kinds of particular types：Elliptical beam double offset Greggory
Antenna, high efficiency excipient double offset elliptical beam antenna, elliptical beam zoom ring-focus antenna, and elliptical beam Cassegraio antenna.
The common ground of these four antennas is using the symmetrical feed of circle, is easy to processing, cost cheap, and using the subreflector of special excipient
Circular beam is changed into elliptical beam, noenergy leakage, be easy to implement greater efficiency.But because antenna form etc. is intrinsic
Following applied defect be present in feature, these antenna：
1st, the elliptical beam antenna of first two double offset structure causes antenna longitudinal due to avoiding blocking for subreflector
The increase of size and lateral dimension, it is unfavorable for realizing low section and miniaturization and cross-polarization performance is poor.
2nd, although varifocal elliptical beam ring-focus antenna has excellent stationary wave characteristic and feed to block the advantages of small, but by
In its special geometry, 1.5 can only be accomplished at present:1 axle than elliptical beam.
3rd, excipient elliptical beam Cassegrain antenna can realize big axle than elliptical beam, but feed blocks larger, and this is about
The beam design of feed simultaneously reduces the reflection efficiency of primary reflection surface, governs the lifting of antenna performance, and due to its geometry knot
Structure causes standing wave poor performance.
Utility model content
In view of this, the utility model proposes one kind mixing big axle of excipient than elliptical beam antenna, it can be simply efficient
Ground controlsFace andThe mouth face Energy distribution of the plane of face two, eliminate feed block, realize high efficiency, low sidelobe,
The big axle of low section of low standing wave is than elliptical beam antenna.
Based on above-mentioned purpose, technical scheme provided by the utility model is：
One kind mixing big axle of excipient is than elliptical beam antenna, and it includes primary reflection surface and subreflector, and primary reflection surface includes
First outer ring portion and the first annular inner portion, subreflector include the second outer ring portion and the second annular inner portion, the first outer portion
Point and the line of demarcation of the first annular inner portion and the line of demarcation of the second outer ring portion and the second annular inner portion be ellipse, outside first
Loop section and the second outer ring portion form oval excipient Cassegrain antenna structure, the first annular inner portion and the second annular inner portion structure
Into oval excipient ring-focus antenna structure, the second outer ring portion and the second annular inner portion single order at line of demarcation are continuous.
From narration above as can be seen that the beneficial effect of technical solutions of the utility model is：
1st, the big axle of the utility model mixing excipient overcomes lacking for existing excipient elliptical beam antenna than elliptical beam antenna
Point, the elimination feed that can maximize favourable factors and minimize unfavourable ones block, can simply and effectively constrain the first secondary lobe, realize high efficiency, low stationary wave characteristic
Big axle than elliptical beam antenna, 2 can be accomplished:1 axle than elliptical beam.
2nd, the utility model can simply and effectively control the Kou Mianchang in two symmetrical planes, easily controllable whole oval mouth
The Energy distribution in footpath.
3rd, the inner ring and outer rings transition function selected by the utility model is different, can pursue rational energy in endocyclic area
Amount distribution and the largest contours of outer shroud primary reflection surface, so as to the Energy distribution between the further symmetrical plane of optimal control two, are carried
Die the overall performance of line.
In a word, the utility model overcomes the shortcomings that various excipient elliptical beam antennas in the prior art, have high efficiency,
The advantages that low sidelobe, low standing wave, low section, big axle ratio etc., it is a kind of important improvement to prior art.
Brief description of the drawings
In order to clearly describe this patent, one or more accompanying drawing is provided below, these accompanying drawings are intended to this patent
Background technology, technical principle and/or some specific embodiments make aid illustration.It should be noted that these accompanying drawings can
It can not also provide some to provide and have been described and belong to known in those of ordinary skill in the art often at this patent word segment
The detail of knowledge；Also, because one of ordinary skill in the art can combine the published word content of this patent completely
And/or accompanying drawing content, more accompanying drawings, therefore these accompanying drawings below are designed in the case where not paying any creative work
Can cover can not also cover all technical schemes that this patent word segment is described.In addition, these accompanying drawings is specific interior
Containing needs the word content with reference to this patent to be determined, when word content and some obvious knot in these accompanying drawings of this patent
, it is necessary to which to carry out comprehensive descision be this on earth with reference to the narration of the common knowledge and this patent other parts of this area when structure is not consistent
The word segment of patent, which exists to exist in clerical mistake, or accompanying drawing, draws mistake.Especially, the following drawings is the figure of example property
Piece, it is not intended that imply the protection domain of this patent, one of ordinary skill in the art is by reference to the text disclosed in this patent
Word content and/or accompanying drawing content, more accompanying drawings can be designed in the case where not paying any creative work, these are new
Technical scheme representated by accompanying drawing is still within the protection domain of this patent.
Fig. 1 be in the utility model embodiment it is a kind of mix the big axle of excipient than elliptical beam antenna front view；
Fig. 2 is Fig. 1 top view；
Fig. 3 is the enlarged drawing of subreflector in Fig. 1；
Fig. 4 is the enlarged drawing of subreflector in Fig. 2.
Included in figure：Primary reflection surface 1, subreflector 2, XOZ planes are (i.e.Short axis plane) on primary reflection surface bus
Outer ring portion 3, the outer ring portion 4 of subreflector bus in XOZ planes, the annular inner portion of primary reflection surface bus in XOZ planes
The annular inner portion 6 of subreflector bus in 5, XOZ planes, YOZ planes are (i.e.Long shaft plane) on primary reflection surface bus
Outer ring portion 7, the outer ring portion 8 of subreflector bus in YOZ planes, the annular inner portion of primary reflection surface bus in YOZ planes
The annular inner portion 10 of subreflector bus in 9, YOZ planes.
Embodiment
For the ease of understanding of the those skilled in the art to the art of this patent scheme, meanwhile, in order that the technology of this patent
Purpose, technical scheme and beneficial effect are clearer, and the protection domain of claims is fully supported, below with tool
The form of body case makes further, more detailed description to the technical scheme of this patent.
It should be noted that the term such as " first " " second " employed in this patent just for the sake of distinguish multiple/group/
The word marking that class has the different objects of same names and used, consequently facilitating making accurate description to technical scheme.Obviously,
Implication of the term of these scalar natures without any sequence or counting, does not have the language equivalent to article or demonstrative pronoun yet
Adopted intension.
One kind mixing big axle of excipient is than elliptical beam antenna, and it includes primary reflection surface and subreflector, and primary reflection surface includes
First outer ring portion and the first annular inner portion, subreflector include the second outer ring portion and the second annular inner portion, the first outer portion
Point and the line of demarcation of the first annular inner portion and the line of demarcation of the second outer ring portion and the second annular inner portion be ellipse, outside first
Loop section and the second outer ring portion form oval excipient Cassegrain antenna structure, the first annular inner portion and the second annular inner portion structure
Into oval excipient ring-focus antenna structure, the second outer ring portion and the second annular inner portion single order at line of demarcation are continuous.
The embodiment antenna has the advantages that high efficiency, low sidelobe, low standing wave, low section, big axle ratio etc., is to existing skill
A kind of important improvement of art.
Than a kind of design method of elliptical beam antenna, it comprises the following steps the above-mentioned big axle of mixing excipient：
(1) first group of bus of primary reflection surface and subreflector is designed in short axis plane, first group of bus includes outer shroud
Partial card match Glenn structure curve and ring Jiao's structure curve of annular inner portion；
(2) second group of bus of primary reflection surface and subreflector is designed in long shaft plane, second group of bus includes outer shroud
Ring Jiao's structure curve of partial card match Glenn structure curve and annular inner portion, ring Jiao's structure curve in second group of bus
Summit overlaps with the summit of ring Jiao's structure curve in first group of bus；
(3) according to first group of bus and second group of bus bar configuration difference transition function, and transition function is made in short axis plane
It is zero with the derivative at long shaft plane；
(4) calculated according to transition function allThe subreflector coordinate in face, and then obtain the song of whole subreflector
Face；
(5) curved surface of whole primary reflection surface is obtained according to reflection law and aplanatism principle.
The design method is simple and easy, can make good optimization to the performance of antenna, has extremely strong operability.This
Outside, the inner ring and outer rings transition function selected by the present embodiment method is different, can pursue rational energy point in endocyclic area
The largest contours of cloth and outer shroud primary reflection surface, so as to the Energy distribution between the further symmetrical plane of optimal control two, lift day
The overall performance of line.
Optionally, above-mentioned steps (1) and the concrete mode of the middle design bus of step (2) are：
(X01) outer ring portion primary reflection surface diameter, outer ring portion subreflector diameter, feed irradiating angle, inner ring are determined
Maximum illumination angle and outer ring portion Jiao footpath ratio；
(X02) mouth face field is chosen according to the antenna pattern of feed and index demand；
(X03) the card match Glenn structure curve of outer ring portion is calculated using the shaping method of Cassegrain antenna；
(X04) tangent relation that Glenn structure curve and ring Jiao's structure curve are matched according to card determines annular inner portion primary reflection surface
Diameter, annular inner portion subreflector diameter and annular inner portion Jiao footpath ratio；
(X05) the inner ring maximum illumination angle in step (X01) is combined, and is selected and outer ring portion identical light path, feed
Antenna pattern and primary reflection surface mouth face field distribution function, annular inner portion is calculated using the shaping method of ring-focus antenna
Ring Jiao's structure curve.
Optionally, the concrete mode of above-mentioned steps (5) is：
(501) unit normal vector of subreflector is obtained；
(502) according to reflection law, obtain after subreflector reflects, point to the vectorial unit vector of primary reflection surface；
(503) vector of primary reflection surface is obtained by aplanatism condition, and primary reflection surface coordinate is tried to achieve by the vector.
Optionally, the transition function in above-mentioned steps (3) is calculated by multinomial, special function or composite function.
A kind of more specifical design method, it is comprised the following steps：
(1) in rectangular coordinate system XOZ planes (i.e.Short axis plane) in designing antenna first group of major-minor reflecting surface
Bus.
The bus is made up of two parts：The Cassegrain structure curve of outer ring portion and the ring close-burning structure of annular inner portion are bent
Line.
First, the major-minor reflection surface curve of outer ring portion Cassegrain structure is calculated.It is several by actual requirement of engineering and antenna
What structure determination goes outThe initial parameter of the outer ring portion (Cassegrain structure) in face：Primary reflection surface diameter Dm=600mm,
Subreflector diameter Ds=150mm, feed irradiating angle θm=36 °, inner ring maximum illumination angle θc=18 ° and burnt footpath ratio τ=
0.65, curve and parameter schematic diagram are as shown in Figure 2.Suitable mouth is chosen according to the antenna pattern of actual feed and index demand
Face field, the major-minor that outer ring portion is calculated using the shaping method of Cassegrain antenna reflect surface curve r0°,out(θ), now
Obtained curve only has θ ∈ (θc,θm) it is outer ring portion, the interior the outer end point (x of subreflector bussc,ysc,zsc)、(xsm,ysm,
zsm) respectively (31.74,0,97.69) and (75,0,103.2), the interior the outer end point (x of primary reflection surface busc,yc,zc)、(xm,
ym,zm) it is respectively (229,0, -155) and (300,0, -130).
Secondly, the major-minor reflection surface curve of the ring close-burning structure of annular inner portion is calculated.By outer shroud curve and middle corner cut θcIt is determined that
Go out the initial parameter of annular inner portion ring-focus antenna curve：Inner ring major-minor reflecting surface diameter Dm'=2zc=458mm, Ds'=2zsm=
63.4mm, inner ring maximum illumination angle θc=18 ° and burnt footpath ratio τ '=0.54.To meet the broadband properties of antenna, inner ring ring close-burning
The light path of structure Ck=582mm identical with outer ring portion；Consider overall optimization design, choosing and outer shroud identical feed radiation side
To figure be f (θ) and identical primary reflection surface mouth face field distribution function is F1(θ), but θ ∈ (0, θc).Curve and parameter schematic diagram are such as
Fig. 3.Then, the major-minor for annular inner portion being calculated using the shaping method of ring-focus antenna reflects surface curve r0°,in(θ).Obtain
Curve θ ∈ (θ0,θc) it is annular inner portion, interior the outer end point the P, (x of subreflector bussc,ysc,zsc) be respectively (0,0,91.1) and
(31.74,0,97.69), the outer end point (x in primary reflection surface bus0,y0,z0)、(xc,yc,zc) it is respectively (75,0, -189),
(229,0,-155)。
So far design completes first group of major-minor reflecting surface bus r0°(θ)。
(2) the initial parameter D of major axis is chosenm=1200mm, θm=36 °, θc=18 ° and mouth face field distribution function F2(θ),
Using identical light path Ck=582mm in short axis plane, similarly step (1), in rectangular coordinate system YOZ plane (i.e. long shaft planes) in design second group of major-minor reflecting surface bus r of antenna90°(θ).Optimizing application algorithm or newton in this step
Approximatioss chooses a reasonable value Ds=177mm so has to ensure that the summit in the ring Jiao summit and XOZ planes of the plane overlaps
Beneficial to afterwards to the construction of whole reflecting surface curved surface.
(3) it is two in determination step (1) and step (2)Major-minor face between face introduces transition function.Because
Face andFace is the symmetrical plane of antenna major-minor reflecting surface, so to ensure that incident ray in the plane of symmetry and reflected ray exist
In respective same plane, thus choose transition function need meet at this two plane onDerivative be zero.
Specifically, existWhen, When,
Transition function can be obtained with polynomial computation, can also select to meet the special function of conditions above such asOr its composite function is such as(wherein c1, c2 are coefficient).In order to obtain larger bore
With excellent elliptic aperture Energy distribution, the inner ring and outer rings transition function that the design method is chosen is respectively：Coefficient v=1.1
With v=0.9 hyperelliptic transition function：
Wherein,
It can be calculated with transition function allThe subreflector coordinate in face, and then obtain the curved surface of whole subreflector
For：
(4) primary reflection surface can be obtained using reflection law and aplanatism principle in three dimensions.For in step (3)
The subreflector curved surface of determination, the unit normal vector of the subreflector can also be obtained with numerical computations with surface fitting
en。
By reflection law, it can obtain reflecting the unit vector for the vectorial s for pointing to primary reflection surface through subreflector：
es=er-2(en·er)en,
Wherein, erFor minor face vector r unit vector.
Can obtain primary reflection surface vector by aplanatism condition is：
Wherein z is the z coordinate value of primary reflection surface.
Thus primary reflection surface coordinate can be tried to achieve.
So far, calculating of the mixing big axle of excipient than elliptical beam antenna is completed.
It should be noted that " step " so-called in patent claims book refers to for realizing appointing for this patent method
A necessary links in one idiographic flow, and it is complete not comprising the restriction to step execution sequence, those of ordinary skill in the art
On the basis of the internal logic between each step in understanding of a certain claim of this patent all can be reached, the specific execution to these steps
Order makes the various actual arrangements for meeting this internal logic.Therefore, any one applies institute in a certain claim of this patent
Have step, meet these steps between it is internal logic, for realizing this patent method, and with specific execution sequence
Specific steps sequence, within the protection domain of this patent..
It is to be appreciated that to be intended merely to facilitate this area common for the above-mentioned narration for this patent embodiment
The individual example description that technical staff understands this patent scheme and enumerated, does not imply that the protection domain of this patent is limited solely to
In this few example, those of ordinary skill in the art completely can on the premise of making and fully understanding to the art of this patent scheme,
In the form of not paying any creative work, by taking each example cited by this patent combination technique feature, replacing
Some technical characteristics, more technical characteristics etc. mode is added, obtain more embodiments, all these specific implementations
Mode is within the covering scope of patent claims book, and therefore, these new embodiments also should be in this patent
Protection domain within.
In addition, for the purpose for simplifying narration, this patent may also not enumerate some ordinary specific embodiments, this
A little schemes are that those of ordinary skill in the art can expect naturally after it understanding of the art of this patent scheme, it is clear that this
A little schemes should be also included within the protection domain of this patent.
For the purpose for simplifying narration, above-mentioned each embodiment may only up to for the extent of disclosure of ins and outs
The degree that can voluntarily make a decision to those skilled in the art, i.e. there is no disclosed ins and outs for above-mentioned embodiment,
Those of ordinary skill in the art completely can be in the case where not paying any creative work, in filling for the art of this patent scheme
Divide under prompting, completed by means of the disclosed document of textbook, reference book, paper, patent, audio-visual product etc., or, this
A little details are the contents that can voluntarily be maked decision according to actual conditions under being generally understood that of those of ordinary skill in the art.
It can be seen that even if these underground ins and outs, the open adequacy of the art of this patent scheme will not also be impacted.
In a word, it is any on the basis of explanation effect of the patent specification to claims protection domain is combined
Fall into the specific embodiment of patent claims book covering scope, within the protection domain of this patent..
Claims (1)
1. one kind mixing big axle of excipient is than elliptical beam antenna, including primary reflection surface and subreflector, it is characterised in that the master
Reflecting surface includes the first outer ring portion and the first annular inner portion, and the subreflector includes the second outer ring portion and the second internal ring portion
Point, the line of demarcation of first outer ring portion and the first annular inner portion and second outer ring portion and the second annular inner portion
Line of demarcation is ellipse, and first outer ring portion and the second outer ring portion form oval excipient Cassegrain antenna structure, institute
State the first annular inner portion and the second annular inner portion and form oval excipient ring-focus antenna structure, in second outer ring portion and second
Loop section single order at line of demarcation is continuous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720630090.1U CN206947541U (en) | 2017-06-02 | 2017-06-02 | One kind mixing big axle of excipient is than elliptical beam antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720630090.1U CN206947541U (en) | 2017-06-02 | 2017-06-02 | One kind mixing big axle of excipient is than elliptical beam antenna |
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| Publication Number | Publication Date |
|---|---|
| CN206947541U true CN206947541U (en) | 2018-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720630090.1U Withdrawn - After Issue CN206947541U (en) | 2017-06-02 | 2017-06-02 | One kind mixing big axle of excipient is than elliptical beam antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086376A (en) * | 2017-06-02 | 2017-08-22 | 中国电子科技集团公司第五十四研究所 | One kind mixing big axle of excipient is than elliptical beam antenna and its design method |
| CN109408986A (en) * | 2018-11-01 | 2019-03-01 | 中国电子科技集团公司第五十四研究所 | A kind of design method of elliptical beam Cassegrain antenna |
| TWI713252B (en) * | 2019-03-15 | 2020-12-11 | 張道治 | Toroidal compact antenna test range |
-
2017
- 2017-06-02 CN CN201720630090.1U patent/CN206947541U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107086376A (en) * | 2017-06-02 | 2017-08-22 | 中国电子科技集团公司第五十四研究所 | One kind mixing big axle of excipient is than elliptical beam antenna and its design method |
| CN107086376B (en) * | 2017-06-02 | 2023-06-20 | 中国电子科技集团公司第五十四研究所 | Mixed-shaped large-axial-ratio elliptical beam antenna and design method thereof |
| CN109408986A (en) * | 2018-11-01 | 2019-03-01 | 中国电子科技集团公司第五十四研究所 | A kind of design method of elliptical beam Cassegrain antenna |
| CN109408986B (en) * | 2018-11-01 | 2022-11-18 | 中国电子科技集团公司第五十四研究所 | Design method of elliptical beam Cassegrain antenna |
| TWI713252B (en) * | 2019-03-15 | 2020-12-11 | 張道治 | Toroidal compact antenna test range |
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