CN105609966A - Sectional-type antenna reflection surface and design method thereof - Google Patents
Sectional-type antenna reflection surface and design method thereof Download PDFInfo
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- CN105609966A CN105609966A CN201510624505.XA CN201510624505A CN105609966A CN 105609966 A CN105609966 A CN 105609966A CN 201510624505 A CN201510624505 A CN 201510624505A CN 105609966 A CN105609966 A CN 105609966A
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Abstract
The invention relates to a sectional-type antenna reflection surface and a design method thereof. The sectional-type antenna reflection surface comprises at least two sections connected together. A three-dimensional positioning mechanism is arranged between two opposite side surfaces of the two adjacent sections. The three-dimensional positioning mechanism carries out three-dimensional positioning on the two adjacent sections and is used to separate the two opposite side surfaces. High positioning precision is possessed between the two adjacent sections of the sectional-type antenna reflection surface. Through the design method of the sectional-type antenna reflection surface, the two adjacent sections possess the high positioning precision.
Description
Technical field
The present invention relates to antenna, relate in particular to split-type antenna reflective face and method for designing thereof.
Background technology
Reflecting surface is an important component part of antenna, and it utilizes focusing principle, and the spherical wave being sent by focus is transformed into plane wave after its reflection; Otherwise when it is when receiving, it can focus on the plane wave axially transmitting along it in focus after reflection.
At present, reflecting surface mainly comprises monoblock type antenna reflective face and split-type antenna reflective face. Wherein, split-type antenna reflective face is joined together to form by multiple distinguish. Current split-type antenna reflective face generally adopts the ways such as the two opposite side surfaces of two adjacent distinguish is alignd, every cover reflecting surface is adjusted respectively to assemble. In reality processing, there is error in distinguish, and its side can not be completely level and smooth, the root-mean-square error σ >=0.5mm of such reflecting surface. So due to mismachining tolerance and the rigging error of distinguish, concerning the reflecting surface with respect to same bore, the error of the error ratio monoblock type antenna reflective face of split-type antenna reflective face is larger. This error can make sidelobe level far away raise, and antenna gain is declined.
In general, from result of use, mainly there is following problem in existing split-type antenna reflective face:
1, the relative location, two sides that utilizes two adjacent distinguish, is subject to the impact of the error of whole lateral plane degree, Normal Displacement size, makes the location between two adjacent distinguish inaccurate;
2, in the time that two adjacent distinguish connect, every cover reflecting surface is adjusted respectively, causes identical distinguish there is no interchangeability between different reflectings surface;
3, positioning datum inaccuracy, causes rigging error excessive.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is to provide split-type antenna reflective face and the method for designing thereof between a kind of two adjacent distinguish with high position precision.
(2) technical scheme
In order to solve the problems of the technologies described above, one aspect of the present invention provides a kind of split-type antenna reflective face, comprise main lobe and at least two distinguish of at least one side lobe of linking together, between two relative sides of two adjacent distinguish, be provided with three-dimensional localization mechanism, this three-dimensional localization mechanism carries out three-dimensional localization to two adjacent distinguish and two relative sides is spaced apart from each other.
According to the present invention, three-dimensional localization mechanism comprises the first location structure and the second location structure; Wherein, the first location structure is separately positioned on two relative sides with the second location structure, and the first location structure and the second location structure match two adjacent distinguish are carried out to three-dimensional localization.
According to the present invention, the first location structure comprises the first projection and the first keeper, the first projection is extended by the side at the first location structure place, the edge face structure of the first projection be its side to the first protruding place skew first apart from time can overlap with this side; The second location structure comprises the second projection and the second keeper, and the second projection is extended by the side at the second location structure place, and the edge face structure of the second projection can overlap with this side while being its skew of side to the second protruding place second distance; Wherein, the end face of the end face of the first projection and the second projection leans, two adjacent distinguish are positioned in the normal orientation of two relative sides, the first keeper and the second keeper coordinate, to two adjacent distinguish at the same time perpendicular to positioning on normal orientation the both direction that is perpendicular to one another.
According to the present invention, the first keeper is arranged on the end face of the first projection, and the second keeper is arranged on the end face of the second projection; And/or first in keeper and the second keeper one be alignment pin, another is dowel hole; And/or first projection and the second projection be pre-embedded block; And/or first projection and the material of the second projection be metal.
According to the present invention, the first keeper is arranged on the end face of the first projection, and the second keeper is arranged on the end face of the second projection.
According to the present invention, one in the first keeper and the second keeper is alignment pin, and another is dowel hole.
According to the present invention, the first projection and the second projection are pre-embedded block.
According to the present invention, the material of the first projection and the second projection is metal.
According to the present invention, the vertical range between two relative sides is positioned at the scope of the electrical property that does not affect split-type antenna reflective face.
According to the present invention, at least two distinguish are at least three distinguish, and at least three distinguish comprise a main lobe and at least two secondary lobes; Quality of fit between secondary lobe and coupled distinguish is corresponding with the distinguish quantity that is connected in this secondary lobe, from the secondary lobe that connects maximum distinguish to the secondary lobe that connects minimum distinguish, quality of fit between secondary lobe and coupled distinguish successively decreases successively, wherein, in the case of the distinguish quantity that connects separately of two secondary lobes that is connected is different, the quality of fit between these two secondary lobes equals to be connected with the quality of fit between secondary lobe and other distinguish of more distinguish.
According to the present invention, the decrement of quality of fit is more than or equal to 2 grades.
According to the present invention, be provided with the fastening type coupling assembling of the two connection at the outer circumferential side of two adjacent distinguish; Be provided with the adjustable connection component of the two connection at main lobe and the back side of the secondary lobe being adjacent.
According to the present invention, fastening type coupling assembling is fastening catch assembly, and adjustable connection component is spring catch assembly.
Of the present inventionly relate to a kind of method for designing of split-type antenna reflective face more on the one hand, comprise the steps: S1, on reflecting surface, determine the position of cut-off rule, S2, by cut-off rule, to its both sides, translation the first distance and second distance form the first side wall line and the second sidewall line respectively, S3, two relative sides of two distinguish of cut-off rule both sides correspondingly arrange along the first side wall line and the second sidewall line, S4, arrange the first projection and the second projection, wherein, extend the side of the first projection from two relative sides and the end surface shape of the first projection be configured to its skew of side to the first protruding place first apart from time can overlap with this side, extend the second projection another side from two relative sides and the end surface shape of the second projection is configured to when its side to the second protruding place is offset second distance to overlap with this side, and the end face of the first projection and the second projection leans at cut-off rule place, two adjacent distinguish are positioned in the normal orientation of two relative sides, S5, arrange the first keeper and the second keeper, the first keeper is set on the end face of the first projection, the second keeper is set on the end face of the first projection, the first keeper and the second keeper coordinate, to two adjacent distinguish at the same time perpendicular to positioning on normal orientation the both direction that is perpendicular to one another, wherein, the first projection, the second projection, the second keeper and the 3rd keeper have formed three-dimensional localization mechanism, and this three-dimensional localization mechanism carries out three-dimensional localization to two of cut-off rule both sides distinguish and two relative sides of these two distinguish are spaced apart from each other.
According to the present invention, the first distance and second distance sum are positioned at the scope of the electrical property that does not affect split-type antenna reflective face.
(3) beneficial effect
Technique scheme tool of the present invention has the following advantages:
Split-type antenna reflective face of the present invention, comprise at least two distinguish that link together, between two relative sides of two adjacent distinguish, be provided with three-dimensional localization mechanism, this three-dimensional localization mechanism carries out three-dimensional localization to two adjacent distinguish and two relative sides is spaced apart from each other. Thus, two modes that side positions by two adjacent distinguish are avoided adopting, but two relative sides of two adjacent distinguish are spaced apart from each other and adopt in addition three-dimensional localization mechanism to carry out three-dimensional localization, and then avoided flatness, the Normal Displacement size of the whole side that is subject to distinguish error impact and make the inaccurate problem in location between two adjacent distinguish, make this split-type antenna reflective face compared with thering is higher positioning precision between its two adjacent distinguish of prior art.
The present invention relates to a kind of method for designing of split-type antenna reflective face, the split-type antenna reflective face of designing by this method for designing, two modes that side positions by two adjacent distinguish are avoided adopting, but two relative sides of two adjacent distinguish are spaced apart from each other and adopt in addition three-dimensional localization mechanism to carry out three-dimensional localization, and then avoid the flatness of the whole side that is subject to distinguish, the impact of the error of Normal Displacement size and make the inaccurate problem in location between two adjacent distinguish, make this split-type antenna reflective face compared with thering is higher positioning precision between its two adjacent distinguish of prior art.
Brief description of the drawings
Fig. 1 is that an embodiment master of split-type antenna reflective face of the present invention looks schematic diagram;
Fig. 2 is the first decomposing schematic representation of the split-type antenna reflective face shown in Fig. 1, mainly shows the decomposition between multiple distinguish;
Fig. 3 is the distinguish principle schematic of the split-type antenna reflective face shown in Fig. 1;
Fig. 4 is the first partial schematic diagram of the split-type antenna reflective face shown in Fig. 1;
Fig. 5 is the second partial schematic diagram of the split-type antenna reflective face shown in Fig. 1;
Fig. 6 is the partial exploded view of the split-type antenna reflective face shown in Fig. 1;
Fig. 7 is the rearview of the split-type antenna reflective face shown in Fig. 1, in this rearview, also shows the backrest of split-type antenna reflective face, and backrest is omitted in Fig. 1-Fig. 6;
Fig. 8 is the decomposing schematic representation of the split-type antenna reflective face shown in Fig. 7; Mainly show the decomposition between split-type antenna reflective face and backrest;
Fig. 9 is the 3rd partial schematic diagram of the split-type antenna reflective face shown in Fig. 8, mainly shows stepped pre-buried column;
Figure 10 is the 4th partial schematic diagram of the split-type antenna reflective face shown in Fig. 8, mainly shows shoulder hole.
In figure:
1: three-dimensional localization mechanism; 11: the first location structures; 111: the first projections; 112: the first keepers; 12: the second location structures; 121: the second projections; 122: the second keepers; 2: main lobe; 3: the first secondary lobes; 4: the second secondary lobes; 5: target spot; 6: fastening type coupling assembling; 7:: adjustable connection component; 8: backrest; 9: stepped pre-buried column; 10: shoulder hole; L: cut-off rule; A1: the first distance; A2: second distance.
Detailed description of the invention
For making object, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is a part of embodiment of the present invention, instead of whole embodiment. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite of not making creative work, belongs to the scope of protection of the invention.
Referring to figs. 1 through Fig. 7, an embodiment of split-type antenna reflective face of the present invention, it comprises at least two distinguish that link together, between two relative sides of two adjacent distinguish, be provided with three-dimensional localization mechanism 1, this three-dimensional localization mechanism 1 carries out three-dimensional localization to two adjacent distinguish and two relative sides is spaced apart from each other (in Fig. 1 and Fig. 7, two isolated distances in side are less, therefore do not illustrate). Wherein, " three-dimensional localization " is in the enterprising row space of three directions that are perpendicular to one another location, that is to say, just can fixed part position spatially by " three-dimensional localization ".
Thus, two the relative modes that side positions by two adjacent distinguish are avoided adopting, but two relative sides of adjacent distinguish are spaced apart from each other and adopt in addition three-dimensional localization mechanism 1 to carry out three-dimensional localization, and then avoided flatness, the Normal Displacement size of the whole side that is subject to distinguish error impact and make the inaccurate problem in location between two adjacent distinguish, make this split-type antenna reflective face compared with thering is higher positioning precision between its two adjacent distinguish of prior art.
For same set of reflecting surface, the same distinguish of different batches will be realized interchangeability, and not only the outer profile size of each distinguish will meet required precision, and the location between distinguish also will reach quality of fit. In the present invention, each distinguish is processed respectively, can obtain high-precision surface profile, relies on three-dimensional localization mechanism 1 to realize high position precision between distinguish, therefore can realize same distinguish and can overlap between reflecting surface and exchange in difference.
In addition, from point of theory, the focus of each distinguish is same, and the curved surface profile of each distinguish is also same. To can not converge on same point if locate the focus of two inaccurate, adjacent distinguish between two adjacent distinguish, and will inevitably cause the aperture efficiency of antenna reflective face to decline. In the present embodiment, by three-dimensional localization mechanism 1, principle, can meet the coplanar effect of all distinguish, and then ensure the homogeneity of the curved surface profile of distinguish.
Referring to figs. 1 through Fig. 3, in the present embodiment, split-type antenna reflective face has four distinguish, comprising a main lobe 2 and three secondary lobes. A secondary lobe is connected to the top of main lobe 2, and another two resolutions lay respectively at the both sides of main lobe 2, and the secondary lobe that is positioned at both sides is all connected with main lobe 2 and the secondary lobe that is positioned at main lobe 2 tops. Three sides of main lobe 2 are adjacent with three secondary lobes respectively, and three secondary lobes are adjacent successively. Wherein, be easy description, in the time that needs are distinguished different secondary lobes, a side is connected with main lobe 2 and secondary lobe that another both sides are connected with secondary lobe is called the first secondary lobe 3, the secondary lobe that a side while is connected with main lobe 2 and secondary lobe is called the second secondary lobe 4. Preferably, two above-mentioned three-dimensional localization mechanisms 1 are set between the first secondary lobe 3 and main lobe 2, between the second secondary lobe 4 and the first secondary lobe 3, a three-dimensional localization mechanism 1 are set, three three detent mechanisms are set between the second secondary lobe 4 and main lobe 2. Wherein, herein the first mentioned secondary lobe 3 and two the second secondary lobes 4 are all with the quantity of the distinguish of its connection and the definition that carry out position, the shape that does not characterize the first secondary lobe 3 and two the second secondary lobes 4 is identical or different, and whether the shape that does not also characterize two secondary lobes 4 is identical or different. In certain embodiments, the shape difference of for example neighboring of two secondary lobes 4.
Continue referring to figs. 1 through Fig. 7, in the present embodiment, three-dimensional localization mechanism 1 comprises the first location structure 11 and the second location structure 12. Wherein, the first location structure 11 is separately positioned on two relative sides of two adjacent distinguish with the second location structure 12, be, on a side in two relative sides of adjacent two distinguish, the first location structure 11 is set, the second location structure 12, the first location structures 11 and the second location structure 12 are set on another side to match two adjacent distinguish is carried out to three-dimensional localization.
More specifically, in the present embodiment, the first location structure 11 comprises the first projection 111 and the first keeper 112, the first projection 111 is extended by the side at the first location structure 11 places, and the edge face structure of the first projection 111 is that its side to the first protruding 111 places can overlap with this side while being offset first distance A 1 the first distance A 1, in other words, the parallel sided at the end face of the first projection 111 and the first protruding 111 places, wherein, in the time that this side is plane, the end face of the first projection 111 is also plane, two planes form plane parallel, in the time that this side is curved surface, the end face of the first projection 111 is also curved surface, two curved surface formation curved surfaces are parallel. further, the first keeper 112 is arranged on the end face of the first projection 111, and the first keeper 112 can be optionally one-body molded with the first projection 111 or fix with it or be removably connected according to its concrete structure.
The second location structure 12 comprises the second projection 121 and the second keeper 122, the second projection 121 is extended by the side at the second location structure 12 places, and the edge face structure of the second projection 121 can overlap with this side while being its skew of side to the second protruding 121 places second distance A2, in other words, the parallel sided at the end face of the second projection 121 and the second protruding 121 places, wherein, in the time that this side is plane, the end face of the second projection 121 is also plane, two planes form plane parallel, in the time that this side is curved surface, the end face of the second projection 121 is also curved surface, two curved surface formation curved surfaces are parallel. further, the second keeper 122 is arranged on the end face of the second projection 121, and the second keeper 122 can be optionally one-body molded with the second projection 121 or fix with it or be removably connected according to its concrete structure.
Wherein, the end face of the end face of the first projection 111 and the second projection 121 matches and leans, these two end face actings in conjunction position in the normal orientation of two relative sides two adjacent distinguish, that is to say, the end face of the end face of the first projection 111 and the second projection 121 has formed normal direction locating surface. Can understand, in the prior art, adopt two relative sides of two adjacent distinguish to lean and carry out the location (normal direction of two sides that lean in two adjacent distinguish is identical) in the normal orientation of these two sides. And the present embodiment is equivalent to a part for a side in two sides to be offset out the first distance A 1 and to have formed the end face of the first projection 111, a part for another side in two sides is offset out to second distance A2 and has formed the end face of the second projection 121, the normal direction of these two end faces is identical with the normal direction of two sides at the first projection 111 and the second protruding 121 places, and then these two end faces lean and can in the normal orientation of two relative sides, locate two adjacent distinguish.
Further, the first keeper 112 and the second keeper 122 coordinate, to two adjacent distinguish at the same time perpendicular to positioning on normal orientation the both direction that is perpendicular to one another. In other words, the first keeper 112 and the second keeper 122 are located on the both direction being perpendicular to one another two adjacent distinguish, and this both direction is also simultaneously perpendicular to the normal orientation of the side at the first projection 111 and the second protruding 121 places.
Thus, the first location structure 11 that the first keeper 112 and the first projection 111 form coordinates with the second location structure 12 that the second keeper 122 and the second projection 121 form, and has realized three-dimensional localization. And then the three-dimensional localization mechanism 1 being made up of the first location structure 11 and the second location structure 12 has also realized three-dimensional localization.
Than the whole side of two adjacent distinguish as normal direction locating surface, adopt the end face of the first projection 111 and the second projection 121 as normal direction locating surface, flatness more easily realizes, especially in the situation that preferably the first protruding 111 and second projection 121 being configured to the integrated pre-embedded block of distinguish. In addition, preferably, the material of the first projection 111 and the second projection 121 is metal, more preferably, is stainless steel 1Cr18Ni9Ti. Than in prior art using the carbon fiber side of distinguish the mode as locating surface, using metal end face as locating surface, positioning precision is higher.
Further, with reference to Fig. 3, the method for designing of the split-type antenna reflective face of the present embodiment is described:
S1, the position of definite cut-off rule L on reflecting surface;
S2, by cut-off rule L, to its both sides, translation the first distance A 1 and second distance A2 form the first side wall line and the second sidewall line respectively;
S3, the side of two distinguish of cut-off rule L both sides correspondingly arranges along the first side wall line and the second sidewall line;
S4, arrange the first projection 111 and the second projection 121, wherein, extend the side of the first projection 111 from two relative sides and the end surface shape of the first projection 111 is configured to when its side to the first protruding 111 places is offset the first distance A 1 to overlap with this side, extend the second projection 121 another side from two relative sides and the end surface shape of the second projection 121 is configured to when its side to the second protruding 121 places is offset second distance A2 to overlap with this side, and the end face of the first projection 111 and the second projection 121 leans at cut-off rule L place, two adjacent distinguish are positioned in the normal orientation of two relative sides,
S5, arrange the first keeper 112 and the second keeper 122, the first keeper 112 is set on the end face of the first projection 111, the second keeper 122 is set on the end face of the first projection 111, the first keeper 112 and the second keeper 122 coordinate, to two adjacent distinguish at the same time perpendicular to positioning on normal orientation the both direction that is perpendicular to one another;
Wherein, the first projection 111, the second projection 121, the second keeper 122 and the 3rd keeper have formed three-dimensional localization mechanism 1, and this three-dimensional localization mechanism 1 carries out three-dimensional localization to two distinguish of cut-off rule L both sides and two relative sides of these two distinguish are spaced apart from each other.
In conjunction with the above-mentioned description to split-type antenna reflective face, can understand, the split-type antenna reflective face of designing by this method for designing, two modes that side positions by two adjacent distinguish are avoided adopting, but two relative sides of two adjacent distinguish are spaced apart from each other and adopt in addition three-dimensional localization mechanism to carry out three-dimensional localization, and then avoid the flatness of the whole side that is subject to distinguish, the impact of the error of Normal Displacement size and make the inaccurate problem in location between two adjacent distinguish, make this split-type antenna reflective face compared with thering is higher positioning precision between its two adjacent distinguish of prior art.
Preferably, in the present embodiment, one in the first keeper 112 and the second keeper 122 is alignment pin, and another is dowel hole. Alignment pin is ladder pin, and its small end is removably installed in the hole in the projection at its place, and dowel hole is arranged in the projection matching with alignment pin place projection. For example, referring to Fig. 4 and Fig. 5, the first keeper is dowel hole, and the second keeper is alignment pin.
Preferably, the first distance A 1 equals second distance A2, and sum of the two is positioned at the scope of the electrical property that does not affect split-type antenna reflective face, the vertical range between two relative sides of two adjacent distinguish is positioned at the scope of the electrical property that does not affect split-type antenna reflective face. Vertical range between two relative sides of two more preferably, adjacent distinguish is less than or equal to 1mm. Certainly,, if any particular/special requirement, one of ordinary skill in the art can adopt FInite Element to calculate not affect the vertical range between two sides of the electrical property of split-type antenna reflective face.
Further, in the situation that thering is a main lobe and at least two secondary lobes, between each distinguish, adopt typical multiple spot to coordinate. From the angle of tolerance fit, the part quality of fit that multiple spot coordinates is lower than other part. Preferably, quality of fit between secondary lobe and coupled distinguish (secondary lobe/main lobe) is corresponding with the distinguish quantity that is connected in this secondary lobe, from the secondary lobe that connects maximum distinguish to the secondary lobe that connects minimum distinguish, quality of fit between secondary lobe and coupled distinguish successively decreases successively, wherein, in the case of the distinguish quantity that connects separately of two secondary lobes that is connected is different, the quality of fit between the two equals to be connected with the quality of fit between secondary lobe and other distinguish of more distinguish. More preferably, the decrement of quality of fit is more than or equal to 2 grades.
In the present embodiment, referring to Fig. 1, in 2 and 3 secondary lobes of main lobe of this split-type antenna reflective face, the first secondary lobe 3 need to coordinate with main lobe 2 and two the second secondary lobes 4 (3 distinguish) totally simultaneously, and the second secondary lobe 4 only needs to coordinate with main lobe 2 and first secondary lobe 3 (totally 2 distinguish). Therefore, the quality of fit between the first secondary lobe 3 and other distinguish is lower 2 grades than the quality of fit between the second secondary lobe 4 and other distinguish. Quality of fit between the first secondary lobe 3 and the second secondary lobe 4 equals the quality of fit between the first secondary lobe 3 and other distinguish (being main lobe 2) here. For example, select H7/e8 to coordinate coordinating between main lobe 2 and the second secondary lobe 4, between the first secondary lobe 3 and main lobe 2 coordinate and the first secondary lobe 3 and the second secondary lobe 4 between coordinate and select H8/d9 cooperation.
And, referring to Fig. 7, in the present embodiment, be provided with the fastening type coupling assembling 6 of the two connection at the outer circumferential side of two adjacent distinguish (adjacent main lobe 2 and secondary lobe/two adjacent secondary lobes), specific to the present embodiment, fastening type coupling assembling 6 is fastening catch assembly. be provided with the outer circumferential side of a secondary lobe in two the second secondary lobes 4 the fastening type coupling assembling 6 that the two is connected at the first secondary lobe 3, be provided with the outer circumferential side of another secondary lobe in two the second secondary lobes 4 the fastening type coupling assembling 6 that the two is connected at the first secondary lobe 3, be provided with the outer circumferential side of a secondary lobe in two the second secondary lobes 4 the fastening type coupling assembling 6 that the two is connected at main lobe 2, be provided with the outer circumferential side of another secondary lobe in two the second secondary lobes 4 the fastening type coupling assembling 6 that the two is connected at main lobe 2, four fastening type coupling assemblings 6 are set altogether. can clearly find out with reference to Fig. 4 and Fig. 5, fastening type coupling assembling 6 comprises hasp and the latch hook at the outer circumferential side edge that is separately positioned on two adjacent distinguish.
With further reference to Fig. 7, be provided with the adjustable connection component of the two connection 7 at main lobe 2 and the back side of the secondary lobe being adjacent. In the present embodiment, adjustable connection component 7 is spring catch assembly. This spring catch assembly comprises two parts that are separately positioned on the back side of main lobe 2 and the back side of secondary lobe, and due to the retractility of spring, in the time that the distance between two adjacent distinguish has fine setting, two parts all can connect fastening. Certainly, the present invention is not limited to this, and in other optional embodiments, adjustable connection component is not limited to spring catch assembly, and also other can adapt to the assembly that the distance fine regulation between two adjacent distinguish connects two distinguish. For example, two counterparts that are connected in adjustable connection component selectively slide and fix at the back side of two distinguish respectively, to realize the adaptability to the distance fine regulation between two adjacent distinguish.
The erection sequence of 2 and 3 secondary lobes of above-mentioned main lobe is:
(1) the first secondary lobe 3 is assembled on main lobe 2;
(2) two the second secondary lobes 4 are assembled to respectively on main lobe 2;
In assembling process, the three-dimensional localization effect on space is played by three-dimensional localization mechanism 1, and especially, the alignment pin of describing in the present embodiment has played the effect of guiding.
After assembling, the quality of fit of main lobe 2 and two the second secondary lobes 4 is higher, the first secondary lobe 3 has met positioning precision under the acting in conjunction of main lobe 2 and two the second secondary lobes 4, and adjustable connection component 7 (spring catch assembly) can meet certain adjustment amount simultaneously, reaches self-compensating effect.
Further, referring to Fig. 1, in the front of distinguish, target spot 5 is set. Split-type antenna reflective face is applied in equipment or product, can calibrates by target spot 5 position of this split-type antenna reflective face, it can be positioned at accurately on position, this its design function of split-type antenna reflective face competence exertion like this.
With reference to Fig. 8 to Figure 10, split-type antenna of the present invention also comprises backrest 8, backrest 8 is removably connected to the back side of distinguish, one in the back side of distinguish and backrest 8 is provided with stepped pre-buried column 9, another is provided with the shoulder hole 10 coordinating with stepped pre-buried column 9, and stepped pre-buried column 9 coordinates distinguish and backrest 8 are positioned with shoulder hole 10.
Backrest 8 in split-type antenna reflective face of the present invention is removably connected with distinguish and passes through stepped pre-buried column 9 and coordinates location with shoulder hole 10, the mode being fixedly connected with distinguish than backrest 8, improve the efficiency while changing distinguish, and repeatable accuracy while effectively having ensured each dismounting backrest 8.
In the present embodiment, backrest 8 is connected with the back side of main lobe 2. On the back side of main lobe 2, arrange in 9, two backrests 8 of 6 stepped pre-buried columns 3 shoulder holes 10 are respectively set, stepped pre-buried column 9 and shoulder hole 10 select basic hole system H8/f7 to coordinate, and can effectively ensure the repeatable accuracy of each dismounting.
In addition, between this distinguish and backrest 8, removably connect by screw, for example, by six screws, two backrests 8 are installed.
The split-type antenna reflective face of above-described embodiment is made 0.75 meter of bore parabola reflecting surface, tests as research object taking this 0.75 meter of bore parabola reflecting surface of quadruplet, and its repeatability, interchangeability, removable backrest 8 have all reached purpose of design. The surface accuracy of this split-type antenna reflective face is through three-dimensional measurement, and the root-mean-square error σ of four split-type antenna reflective faces is respectively 0.12mm, 0.13mm, 0.13mm, 0.14mm.
According to hereby (J.Ruze) formula of Shandong, in the time that antenna reflective face exists surface error, aperture efficiency drops to
E in formulaδFor the aperture efficiency of loss, σ is reflecting surface root-mean-square error, and λ is operation wavelength. This formula represents, the aperture efficiency loss and (σ/λ) that are caused by Surface Machining error2Be inversely proportional to. That is to say, for the reflecting surface of same bore, its surface accuracy is higher, and the efficiency of antenna loss is less.
As λ=9.68mm, when σ=0.5mm, the efficiency of antenna loss is
As λ=9.68mm, when σ=0.14mm, the efficiency of antenna loss is
From result of calculation, in the time of λ=9.68mm, this reflecting surface can make the antenna loss decrease in efficiency 1.69dB being caused by surface accuracy.
From above-mentioned test, split-type antenna reflective face of the present invention can make antenna loss Efficiency Decreasing.
Certainly, the description of the concrete structure of the above-mentioned split-type antenna reflective face for the present embodiment is only an example, in other embodiments of the invention, can adopt other optionally to select. For example, keeper (the first keeper 112/ second keeper 122) can be arranged on the end face of projection (the first projection 111/ second projection 121) like this not as the present embodiment, but is arranged on separately the side of distinguish.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (11)
1. a split-type antenna reflective face, comprises at least two distinguish that link together, itsBe characterised in that,
Between two relative sides of two adjacent described distinguish, be provided with three-dimensional localization mechanism(1), this three-dimensional localization mechanism (1) carries out three-dimensional localization and incites somebody to action described two adjacent distinguishDescribed two relative sides are spaced apart from each other.
2. split-type antenna reflective face according to claim 1, is characterized in that,
Described three-dimensional localization mechanism (1) comprises the first location structure (11) and the second location structure(12)；
Wherein, described the first location structure (11) and described the second location structure (12) are respectivelyBe arranged on described two relative sides described the first location structure (11) and described secondLocation structure (12) matches described two adjacent distinguish is carried out to three-dimensional localization.
3. split-type antenna reflective face according to claim 2, is characterized in that,
Described the first location structure (11) comprises the first projection (111) and the first keeper (112),Described the first projection (111) is extended by the side at described the first location structure (11) place,The edge face structure of described the first projection (111) is its side to described the first projection (111) placeFace skew first apart from time can overlap with this side;
Described the second location structure (12) comprises the second projection (121) and the second keeper (122),Described the second projection (121) is extended by the side at described the second location structure (12) place,The edge face structure of described the second projection (121) is it to described the second projection (121) placeWhen side skew second distance, can overlap with this side;
Wherein, the end of the end face of described the first projection (111) and described the second projection (121)Face leans, the normal orientation to described two adjacent distinguish in described two relative sidesOn position, described the first keeper (112) and described the second keeper (122) coordinate,To described two adjacent distinguish at the same time perpendicular to described normal orientation two of being perpendicular to one anotherIn direction, position.
4. split-type antenna reflective face according to claim 3, is characterized in that,
Described the first keeper (112) is arranged on the end face of described the first projection (111),Described the second keeper (122) is arranged on the end face of described the second projection (121); And/or
One in described the first keeper (112) and described the second keeper (122) for fixedPosition pin, another is dowel hole; And/or
Described the first projection (111) and described the second projection (121) are pre-embedded block; And/or
The material of described the first projection (111) and described the second projection (121) is metal.
5. according to the split-type antenna reflective face described in any one in claim 1-4, its featureBe,
Vertical range between described two relative sides is positioned at and does not affect described split-type antennaIn the scope of the electrical property of reflecting surface.
6. according to the split-type antenna reflective face described in any one in claim 1-4, its featureBe,
Described at least two distinguish are at least three distinguish, and described at least three distinguish comprise oneMain lobe (2) and at least two secondary lobes;
Quality of fit between described secondary lobe and coupled distinguish be connected in this secondary lobe pointLobe quantity is corresponding, from the secondary lobe that connects maximum distinguish to the secondary lobe that connects minimum distinguish, secondary lobeWith quality of fit between coupled distinguish successively decreases successively, wherein, two pairs that are being connectedIn the different situation of distinguish quantity that lobe connects separately, the quality of fit between these two secondary lobes etc.Quality of fit between the secondary lobe and other distinguish that are connected with more distinguish.
7. split-type antenna reflective face according to claim 6, is characterized in that,
The decrement of described quality of fit is more than or equal to 2 grades.
8. split-type antenna reflective face according to claim 6, is characterized in that,
Be provided with the fastening type connection group of the two connection at the outer circumferential side of described two adjacent distinguishPart (6);
Be provided with the two connection at the back side of described main lobe (2) and the described secondary lobe that is adjacentAdjustable connection component (7).
9. split-type antenna reflective face according to claim 8, is characterized in that,
Described fastening type coupling assembling (6) is fastening catch assembly, described adjustable connection component (7)For spring catch assembly.
10. a method for designing for split-type antenna reflective face, is characterized in that, comprises as followsStep:
S1, the position of definite cut-off rule on reflecting surface;
S2, by described cut-off rule, to its both sides, translation first distance and second distance form the respectivelyOne sidewall line and the second sidewall line;
S3, two relative sides of two distinguish of described cut-off rule both sides are correspondingly along firstSidewall line and the second sidewall line arrange;
S4, arranges the first projection and the second projection, and wherein, described the first projection is from described relativeTwo sides in a side extend and the end surface shape of described the first projection is configured to itTo the side skew first at the first protruding place apart from time can overlap with this side, described secondExtend and described the second projection projection another side from described two relative sidesCan be with when end surface shape is configured to its side to described the second protruding place skew second distanceThis side overlaps, and the end face of described the first projection and described the second projection is at described cut-off rulePlace leans, the normal orientation to described two adjacent distinguish in described two relative sidesOn position;
S5, arranges the first keeper and the second keeper, on the end face of described the first projection, establishesPut described the first keeper, described the second keeper be set on the end face of described the first projection,Described the first keeper and described second keeper coordinate, to described two adjacent distinguish withTime perpendicular to positioning on normal orientation the both direction that is perpendicular to one another;
Wherein, described the first projection, described the second projection, described the second keeper and describedThree keepers have formed three-dimensional localization mechanism, and this three-dimensional localization mechanism is to described cut-off rule both sidesTwo distinguish carry out three-dimensional localization and by two relative side each intervals of these two distinguishOpen.
The method for designing of 11. split-type antenna reflective faces according to claim 10, its spyLevy and be,
Described the first distance and described second distance sum are positioned at that not affect described split-type antenna anti-Penetrate in the scope of electrical property of face.
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