CN102680802B - Compact range generation device - Google Patents
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- 239000012792 core layer Substances 0.000 claims abstract description 57
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- 238000000034 method Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 147
- 229910052751 metal Inorganic materials 0.000 claims description 147
- 241000446313 Lamella Species 0.000 claims description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 4
- 238000001259 photo etching Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
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- 230000004069 differentiation Effects 0.000 description 14
- 238000012360 testing method Methods 0.000 description 11
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- 150000001875 compounds Chemical class 0.000 description 6
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- 238000010586 diagram Methods 0.000 description 3
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- 238000005094 computer simulation Methods 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- -1 F4B compound Chemical class 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
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- 238000004381 surface treatment Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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Abstract
The invention discloses a compact range generation device. The compact range generation device comprises a feed source and a metamaterial panel which is arranged above the front part of the feed source, wherein the metamaterial panel comprises a core layer and impedance matching layers which are symmetrically distributed on the surfaces of two sides of the core layer; the core layer comprises a plurality of core layer laminates which are equal in thickness and equal in refractive index distribution; each core layer laminate comprises a first base material which is sheet-like and a plurality of first artificial microstructures which are arranged on the first base material; and the refractive index distribution of the core layer laminates is designed to accord with certain conditions, so electromagnetic wave which is sent by the feed source can be emitted in a plane wave form through the metamaterial panel. According to the compact range generation device provided by the invention, the conventional parabolic reflecting surface is replaced by the sheet-like metamaterial panel. The compact range generation device is easy to manufacture and process and low in cost.
Description
Technical field
The present invention relates to antenna measurement field, more particularly, relate to a kind of Compact range generation device based on Meta Materials.
Background technology
Compact Range be a kind of within closely by smooth reflecting surface, comprise single reflecting surface and double-reflecting face, the spherical wave sent by feed becomes the testing apparatus of plane wave.The plane wave environment that it produces, fully can meet the test request of antenna radiation pattern, thus reaches within closely the object that antenna is tested.Compact Range system can be divided into Compact Range antenna part and microwave dark room part.In the prior art, Compact Range antenna part adopts accurate reflecting surface, the spherical wave produced by point source is the set of device of plane wave in closely inner conversion, usually according to designing requirement, the position of antenna part is installed in microwave dark room exactly, and regulate levelness, by to the process at Compact Range antenna reflective face edge and the cooperation of microwave dark room, create a dead zone at space test zone, the radiation characteristic of measured object in unreflected free space can be simulated in dead zone.
Compare with outdoor far field and indoor near field, Compact Range mainly has following characteristics:
1, the Compact Range being arranged on microwave dark room has good confidentiality;
2, be arranged on indoor Compact Range climate environmental impact little, improve test condition, and then improve the measurement efficiency of RCS (Radar Cross-Section, RCS);
3, can be measurement of near distance problem in darkroom by outdoor far field test question variation.
These features determine the important testing apparatus that Compact Range is research electromagnetic scattering, are also the important infrastructures of the system performance testings such as advanced capabilities radar antenna measurement, the whole star test of satellite, the test of aircraft reflection characteristic.Meanwhile, Compact Range technology more and more plays irreplaceable effect in military field.No matter be satellite, aircraft, or the Stealth Fighter test, adjustment etc. of the Large-size Arms and Equipments such as guided missile, tank, artillery, all depend on the technical role playing Compact Range.Can say, the technical merit of Compact Range how, not only governs performance and the quality of military weapon equipment, is also related to a national national defense safety problem.Therefore, current Ge great military power all using Compact Range system as one of defense strategy technology, emphasis research and development in addition.
At present, be engaged in company and the scientific research institutions of electromagnetic product research and development and technical research both at home and abroad, generally all establish the Compact Range system of oneself, very easy to use and quick.The sophisticated equipment that Compact Range system is tested as modern antennas, has more and more important technical progress meaning undoubtedly and uses prospect extremely widely.
But still there is certain problem in existing design: the smooth reflecting surface of employing is parabolic shape, and reflecting surface must be very large, about than test large three times of dead zone, the mechanical platform manufacturing parabolic shape reflecting surface is very complicated, reach good reflecting surface technique also more difficult, surface treatment dependency degree is high, involve great expense, and feed location must be placed in the focus of reflecting surface, otherwise the conversion of spherical wave and plane wave cannot be reached, and the distance of the focus of reflecting surface and smooth reflecting surface causes very large difficulty to precision of manufacturing process.
Summary of the invention
The object of the invention is to overcome prior art manufacture smooth reflecting surface must be very large, and difficulty in process, complexity, the defect involved great expense, a kind of Compact range generation device based on Meta Materials is provided, this device adopts Meta Materials to manufacture the antenna part of Compact Range, spherical electromagnetic wave is converted to plane electromagnetic wave, manufactures simple, low price.
In order to achieve the above object, the following technical scheme of the present invention's employing:
A kind of Compact range generation device, described device comprises feed and is arranged on the metamaterial panel of feed front upper place, described metamaterial panel comprises core layer and is arranged on the impedance matching layer of core layer both side surface, described core layer comprises the identical and multiple core layer that index distribution is identical of thickness, the first base material that described core layer comprises sheet and multiple first man-made microstructure be arranged on the first base material, the index distribution of described core layer meets following formula:
Vseg＝s +λ*NUMseg；
Wherein, n (r) represents that in core layer, radius is the refractive index value at r place;
S is the vertical range of feed equivalent point to metamaterial panel;
N
maxrepresent the maximal value of the refractive index of core lamella;
N
minrepresent the minimum value of the refractive index of core lamella;
λ represents electromagnetic wavelength;
Floor represents and rounds downwards.
Further, described first base material comprises the first prebasal plate and first metacoxal plate of sheet, and described multiple first man-made microstructure is folded between the first prebasal plate and the first metacoxal plate.
Further, the impedance matching layer of described metamaterial panel both side surface is symmetrical, described impedance matching layer comprises the identical multiple impedance matching layer lamellas of thickness, the second base material that described impedance matching layer lamella comprises sheet and multiple second man-made microstructure be arranged on the second base material, the index distribution of described impedance matching layer lamella meets following formula:
Wherein, i represents the numbering of impedance matching layer lamella, near core layer impedance matching layer lamella be numbered 1, by core layer to direction, both sides, numbering increase successively, away from core layer outermost layer impedance matching layer lamella be numbered m;
Above-mentioned n
maxwith n
minidentical with the maxima and minima of the refractive index of core layer.
Further, described second base material comprises the second prebasal plate and second metacoxal plate of sheet, and described multiple second man-made microstructure is folded between the second prebasal plate and the second metacoxal plate.
Further, the longitudinal section of described metamaterial panel is square, circular or oval.
Further, described first man-made microstructure and the second man-made microstructure metal micro structure all for being made up of copper cash or silver-colored line, described metal micro structure by etching, plating, bore quarters, photoetching, electronics carve or ion quarter method be attached to respectively on the first base material and the second base material.
Further, described metal micro structure is plane flakes, described metal micro structure has the first metal wire and the second metal wire mutually vertically divided equally, described first metal wire is identical with the length of the second metal wire, described first metal wire two ends are connected with two the first metal branch of equal length, described first metal wire two ends are connected on the mid point of two the first metal branch, described second metal wire two ends are connected with two the second metal branch of equal length, described second metal wire two ends are connected on the mid point of two the second metal branch, described first metal branch is equal with the length of the second metal branch.
Further, each first metal branch of the alabastrine metal micro structure of described plane and the two ends of each second metal branch are also connected with identical 3rd metal branch, and the mid point of corresponding 3rd metal branch is connected with the end points of the first metal branch and the second metal branch respectively.
Further, first metal wire of the alabastrine metal micro structure of described plane and the second metal wire are provided with two kinks, and the alabastrine metal micro structure of described plane all overlaps with former figure to the figure of any direction 90-degree rotation around the axis perpendicular to the first metal wire and the second metal wire intersection point.
According to Compact range generation device of the present invention, instead of traditional parabolical reflecting surface by the metamaterial panel of sheet, manufacture processing and be more prone to, cost is cheaper.
Accompanying drawing explanation
Fig. 1 is the structural representation of Compact range generation device of the present invention;
Fig. 2 is the perspective diagram of one of them metamaterial unit of core layer of the present invention;
Fig. 3 is the structural representation of core layer of the present invention;
Fig. 4 is the structural representation of impedance matching layer lamella of the present invention;
Fig. 5 is the schematic diagram of the alabastrine metal micro structure of plane of the present invention;
Fig. 6 is a kind of derived structure of the alabastrine metal micro structure of plane shown in Fig. 5;
Fig. 7 is a kind of distressed structure of the alabastrine metal micro structure of plane shown in Fig. 5.
Fig. 8 is the first stage of the differentiation of the topology of the alabastrine metal micro structure of plane;
Fig. 9 is the subordinate phase of the differentiation of the topology of the alabastrine metal micro structure of plane.
Embodiment
As shown in Figure 1 to Figure 3, comprise feed 1 according to a kind of Compact range generation device of the present invention and be arranged on the metamaterial panel 100 of feed 1 front upper place, described metamaterial panel 100 comprises core layer 10 and is symmetrically distributed in the impedance matching layer 20 in described core layer 10 both side surface, described core layer 10 comprises the identical and multiple core layer 11 that index distribution is identical of thickness, the first base material 13 that described core layer comprises sheet and multiple first man-made microstructure 12 be arranged on the first base material 13, the axis Z2 of feed 1 central shaft Z1 and metamaterial panel 100 has certain angle theta, the angle (Z3 is the parallel lines of Z1) of the axis Z1 namely in Fig. 1 and straight line Z3, feed 1 is not on the axis Z2 of metamaterial panel 100.Other 1 feed is traditional corrugated horn, can determine feed according to actual needs.The vertical sectional shape of metamaterial panel 100 needs according to difference can be square, circular or oval.
In the present invention, the index distribution of described core layer meets following formula:
Vseg＝s+λ*NUMseg (2)；
Wherein, n (r) represents that in core layer, radius is the refractive index value at r place;
S is the vertical range of feed equivalent point X to metamaterial panel; When the angle theta of the axis Z2 of feed central shaft Z1 and metamaterial panel 100 changes, also can there is slight change in s.
N
maxrepresent the maximal value of the refractive index of core lamella;
N
minrepresent the minimum value of the refractive index of core lamella;
λ represents electromagnetic wavelength;
Floor represents and rounds downwards, such as, when
(r is in a certain numerical range) is more than or equal to 0 when being less than 1, and NUMseg gets 0, when
(r is in a certain numerical range) is more than or equal to 1 when being less than 2, and NUMseg gets 1, and the rest may be inferred.
By formula (1) to the determined metamaterial panel 100 of formula (4), the electromagnetic wave that feed 1 can be made to send can in metamaterial panel 100 with the form outgoing of plane wave after metamaterial panel 100.
In the present invention, as shown in Figure 3, described first base material 13 comprises the first prebasal plate 131 and the first metacoxal plate 132 of sheet, and described multiple first man-made microstructure 12 is folded between the first prebasal plate 131 and the first metacoxal plate 132.Preferably, the thickness of described core layer is 0.818mm, and wherein, the thickness of the first prebasal plate and the first metacoxal plate is 0.4mm, and the thickness of multiple first man-made microstructure is 0.018mm, in the present embodiment, gets 4 layers of core layer.
In the present invention, described metamaterial panel 100 also comprises the impedance matching layer 20 being symmetrically distributed in core layer 10 both side surface, described impedance matching layer 20 comprises the identical multiple impedance matching layer lamellas 21 of thickness, in the present embodiment, core layer 10 both side surface respectively haves three layers impedance matching layer lamella, the second base material 23 that described impedance matching layer lamella 21 comprises sheet and multiple second man-made microstructure (not indicating in figure) be arranged on the second base material 23, the index distribution of described impedance matching layer lamella meets following formula:
Wherein, i represents the numbering of impedance matching layer lamella, near core layer impedance matching layer lamella be numbered 1, by core layer to direction, both sides, numbering increase successively, away from core layer outermost layer impedance matching layer lamella be numbered m;
Above-mentioned n
maxwith n
minidentical with the maxima and minima of the refractive index of core layer.
In the present invention, as shown in Figure 4, described second base material 23 comprises the second prebasal plate 231 and the second metacoxal plate 232 of sheet, and described multiple second man-made microstructure is folded between the second prebasal plate 231 and the second metacoxal plate 232.Preferably, the thickness of described impedance matching layer lamella is 0.818mm, and wherein, the thickness of the second prebasal plate and the second metacoxal plate is 0.4mm, and the thickness of multiple second man-made microstructure is 0.018mm.
In the present invention, the arbitrary longitudinal section of described metamaterial panel is of similar shape and area, and namely core layer and matching layer are of similar shape the longitudinal section with area, and longitudinal section herein refers to section vertical with the axis of metamaterial panel in metamaterial panel.The longitudinal section of described metamaterial panel is square, circular or oval, and preferably, the longitudinal section of described metamaterial flat lens is square, and the metamaterial panel obtained so is easily processed.Preferably, the square of to be the length of side be in the longitudinal section of metamaterial panel of the present invention 400mm.
In the present invention, described first man-made microstructure, the second man-made microstructure metal micro structure all for being made up of copper cash or silver-colored line, described metal micro structure by etching, plating, bore quarters, photoetching, electronics carve or ion quarter method be attached to the first base material, the second base material respectively.Preferably, described first man-made microstructure, the second man-made microstructure are the alabastrine metal micro structure of plane shown in Fig. 5 develops the multiple different topology obtained metal micro structure by topology.
In the present invention, core layer can obtain by the following method, namely on the surface of any one of the first prebasal plate and the first metacoxal plate, copper is covered, multiple first metal micro structure (shape of multiple first metal micro structure is obtained by Computer Simulation in advance with arrangement) is obtained again by etching method, finally the first prebasal plate and the first metacoxal plate are pressed together respectively, namely core layer of the present invention is obtained, the method of pressing can be direct hot pressing, also can be utilize hot melt adhesive to connect, certainly may also be other mechanical connection, such as bolt connects.
In like manner, impedance matching layer lamella also can utilize identical method to obtain.Then respectively by multiple core layer pressing one, core layer of the present invention is namely defined; Equally, by multiple impedance matching layer lamella pressing one, impedance matching layer of the present invention is namely defined; Namely core layer, impedance matching layer pressing one are obtained metamaterial panel of the present invention.
In the present invention, described first base material, the second base material are obtained by stupalith, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material etc.Macromolecular material is available F4B compound substance, FR-4 compound substance etc.Preferably, in the present invention, the first prebasal plate and first metacoxal plate of described first base material adopt identical FR-4 compound substance; Equally, in the present invention, the second prebasal plate and second metacoxal plate of described second base material also adopt identical FR-4 compound substance.
Figure 5 shows that the schematic diagram of the alabastrine metal micro structure of plane, described alabastrine metal micro structure has the first metal wire J1 and the second metal wire J2 that mutually vertically divide equally, described first metal wire J1 is identical with the length of the second metal wire J2, described first metal wire J1 two ends are connected with two the first metal branch F1 of equal length, described first metal wire J1 two ends are connected on the mid point of two the first metal branch F1, described second metal wire J2 two ends are connected with two the second metal branch F2 of equal length, described second metal wire J2 two ends are connected on the mid point of two the second metal branch F2, described first metal branch F1 is equal with the length of the second metal branch F2.
Fig. 6 is a kind of derived structure of the alabastrine metal micro structure of plane shown in Fig. 5.It is all connected with identical 3rd metal branch F3 at the two ends of each first metal branch F1 and each second metal branch F2, and the mid point of corresponding 3rd metal branch F3 is connected with the end points of the first metal branch F1 and the second metal branch F2 respectively.The rest may be inferred, and the present invention can also derive the metal micro structure of other form.
Fig. 7 is a kind of distressed structure of the alabastrine metal micro structure of plane shown in Fig. 5, the metal micro structure of this kind of structure, first metal wire J1 and the second metal wire J2 is not straight line, but folding line, first metal wire J1 and the second metal wire J2 is provided with two kink WZ, but the first metal wire J1 remains vertical with the second metal wire J2 to be divided equally, by arrange kink towards with the relative position of kink on the first metal wire and the second metal wire, metal micro structure shown in Fig. 7 is all overlapped with former figure to the figure of any direction 90-degree rotation around the axis perpendicular to the first metal wire and the second metal wire intersection point.In addition, other can also be had to be out of shape, such as, the first metal wire J1 and the second metal wire J2 all arranges multiple kink WZ.
In the present invention, described core layer 11 can be divided into multiple metamaterial unit D as shown in Figure 2 of array arrangement, each metamaterial unit D comprises prebasal plate unit U, metacoxal plate unit V and is arranged on the first man-made microstructure 12 between base board unit U, metacoxal plate unit V, the length, width and height of usual metamaterial unit D are all not more than 1/5th wavelength, be preferably 1/10th wavelength, therefore, the size of metamaterial unit D can be determined according to the frequency of operation of Compact Range.Fig. 2 is the technique of painting of perspective, and to represent the position in the metamaterial unit D of the first man-made microstructure, as shown in Figure 2, described first man-made microstructure is sandwiched between base board unit U, metacoxal plate unit V, and its surface, place represents with SR.
Known refractive index
wherein μ is relative permeability, and ε is relative dielectric constant, and μ and ε is collectively referred to as electromagnetic parameter.Experiment proves, when electromagnetic wave is by refractive index dielectric material heterogeneous, and can to the large direction deviation of refractive index.When relative permeability is certain (usually close to 1), refractive index is only relevant with specific inductive capacity, when the first base material is selected, utilize the arbitrary value (within the specific limits) that only can realize metamaterial unit refractive index to the first man-made microstructure of electric field response, under this Compact Range frequency of operation (12.5GHZ), utilize simulation software, as CST, MATLAB etc., the situation that the specific inductive capacity being obtained the man-made microstructure (the alabastrine metal micro structure of plane as shown in Figure 5) of a certain given shape by emulation is changed along with the refractive index variable of topology, data one to one can be listed, the core layer 11 of the specific refractive index distribution that we need can be designed, in like manner can obtain the index distribution of impedance matching layer lamella 21, thus obtain the index distribution of whole metamaterial panel 100.
In the present invention, the structural design of core layer obtains by Computer Simulation (CST emulation), specific as follows:
(1) the attachment base material (the first base material) of the first metal micro structure is determined.During this is bright, the first prebasal plate and first metacoxal plate of described first base material adopt identical FR-4 compound substance to make, and described FR-4 compound substance is made has a predetermined specific inductive capacity, and such as specific inductive capacity is the FR-4 compound substance of 3.3.
(2) size of metamaterial unit is determined.The size of the size of metamaterial unit is obtained by the frequency of operation of Compact Range, utilizes frequency to obtain its wavelength, then get be less than wavelength 1/5th a numerical value as the length CD of metamaterial unit D and width KD.In the present invention, described metamaterial unit D is long CD as shown in Figure 2 and wide KD is 2.5mm, thickness HD is 0.818mm square platelet.
(3) material and the topological structure of metal micro structure is determined.In the present invention, the material of metal micro structure is copper, and the topological structure of metal micro structure is the alabastrine metal micro structure of the plane shown in Fig. 5, and its live width W is consistent everywhere; Topological structure herein, refers to the basic configuration that topology develops.
(4) the topology parameter of metal micro structure is determined.As shown in Figure 5, in the present invention, the topology parameter of the alabastrine metal micro structure of plane comprises the live width W of metal micro structure, the length a of the first metal wire J1, the length b of the first metal branch F1.
(5) the differentiation restrictive condition of the topology of metal micro structure is determined.In the present invention, the differentiation restrictive condition of the topology of metal micro structure has, the minimum spacing WL (namely as shown in Figure 8, the long limit of metal micro structure and metamaterial unit or the distance of broadside are WL/2) between metal micro structure, the live width W of metal micro structure, the size of metamaterial unit; Due to processing technology restriction, WL is more than or equal to 0.1mm, and equally, live width W is greater than to equal 0.1mm.In the present invention, WL gets 0.1mm, and W gets 0.3mm, and it is 2.5mm that metamaterial unit is of a size of long and wide, and thickness is 0.818mm, and now the topology parameter of metal micro structure only has a and b Two Variables.The differentiation mode passed through as shown in Fig. 8 to Fig. 9 of the topology of metal micro structure, corresponding to a certain characteristic frequency (such as 12.5GHZ), can obtain a continuous print variations in refractive index scope.
Particularly, the differentiation of the topology of described metal micro structure comprises two stages (basic configuration that topology develops is the metal micro structure shown in Fig. 5):
First stage: according to differentiation restrictive condition, when b value remains unchanged, a value is changed to maximal value from minimum value, the metal micro structure in this evolution process is " ten " font when minimum value (a get except).In the present embodiment, the minimum value of a is 0.3mm (live width W), and the maximal value of a is (CD-WL), i.e. 2.5-0.1mm, then the maximal value of a is 2.4mm.Therefore, in the first phase, the differentiation of the topology of metal micro structure as shown in Figure 8, namely be the square JX1 of W from the length of side, develop into maximum " ten " font topology JD1 gradually, in maximum " ten " font topology JD1, the first metal wire J1 and the second metal wire J2 length are 2.4mm, and width W is 0.3mm.In the first phase, along with the differentiation of the topology of metal micro structure, the refractive index of the metamaterial unit corresponding with it increases continuously ((characteristic frequency of corresponding Compact Range), when frequency is 12.5GHZ, the minimum value n of the refractive index that metamaterial unit is corresponding
minbe 1.91.
Subordinate phase: according to differentiation restrictive condition, when a is increased to maximal value, a remains unchanged; Now, b is increased continuously maximal value from minimum value, the metal micro structure in this evolution process is plane flakes.In the present embodiment, the minimum value of b is 0.3mm (live width W), and the maximal value of b is (CD-WL-2W), i.e. 2.5-0.1-2*0.3mm, then the maximal value of b is 1.8mm.Therefore, in subordinate phase, the differentiation of the topology of metal micro structure as shown in Figure 9, namely from maximum " ten " font topology JD1, develop into the alabastrine topology JD2 of maximum plane gradually, the alabastrine topology JD2 of maximum plane herein refers to, the length b of the first metal branch J1 and the second metal branch J2 can not extend again, otherwise the first metal branch is crossing by generation with the second metal branch, the maximal value of b is 1.8mm.Now, the first metal wire and the second wire lengths are 2.4mm, and width is 0.3mm, and the length of the first metal branch and the second metal branch is 1.8mm, and width is 0.3mm.In subordinate phase, along with the differentiation of the topology of metal micro structure, the refractive index of the metamaterial unit corresponding with it increases (characteristic frequency of corresponding Compact Range) continuously, when frequency is 12.5GHZ, and the maximal value n of the refractive index that metamaterial unit is corresponding
maxbe 5.6.
The variations in refractive index scope (1.91-5.6) being obtained metamaterial unit by above-mentioned differentiation meets design needs.If the variations in refractive index scope that above-mentioned differentiation obtains metamaterial unit does not meet design needs, such as maximal value is too little, then change WL and W, again emulate, until obtain the variations in refractive index scope of our needs.
According to formula (1), a series of metamaterial unit emulation obtained, according to after the refractive index arrangement of its correspondence (being in fact exactly the arrangement of multiple first man-made microstructure on the first base material of different topology shape), can obtain core layer of the present invention.
In like manner, impedance matching layer lamella of the present invention can be obtained.
By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.
Claims (9)
1. a Compact range generation device, it is characterized in that, described device comprises feed and is arranged on the metamaterial panel of feed front upper place, described metamaterial panel comprises core layer and is arranged on the impedance matching layer of core layer both side surface, described core layer comprises the identical and multiple core layer stacking gradually setting that index distribution is identical of thickness, the first base material that described core layer comprises sheet and multiple first man-made microstructure be arranged on the first base material, the index distribution of described core layer meets following formula:
Vseg＝s+λ*NUMseg；
Wherein, n (r) represents that in core layer, radius is the refractive index value at r place;
S is the vertical range that feed arrives metamaterial panel;
N
maxrepresent the maximal value of the refractive index of core layer;
N
minrepresent the minimum value of the refractive index of core layer;
λ represents electromagnetic wavelength;
Floor represents and rounds downwards.
2. a kind of Compact range generation device according to claim 1, is characterized in that, described first base material comprises the first prebasal plate and first metacoxal plate of sheet, and described multiple first man-made microstructure is folded between the first prebasal plate and the first metacoxal plate.
3. a kind of Compact range generation device according to claim 2, it is characterized in that, the impedance matching layer of described metamaterial panel both side surface is symmetrical, described impedance matching layer comprises the identical multiple impedance matching layer lamellas of thickness, the second base material that described impedance matching layer lamella comprises sheet and multiple second man-made microstructure be arranged on the second base material, the index distribution of described impedance matching layer lamella meets following formula:
Wherein, i represents the numbering of impedance matching layer lamella, near core layer impedance matching layer lamella be numbered 1, by core layer to direction, both sides, numbering increase successively, away from core layer outermost layer impedance matching layer lamella be numbered m;
Above-mentioned n
minidentical with the minimum value of the refractive index of core layer.
4. a kind of Compact range generation device according to claim 3, is characterized in that, described second base material comprises the second prebasal plate and second metacoxal plate of sheet, and described multiple second man-made microstructure is folded between the second prebasal plate and the second metacoxal plate.
5. a kind of Compact range generation device according to claim 1, is characterized in that, the longitudinal section of described metamaterial panel is square, circular or oval.
6. a kind of Compact range generation device according to claim 4, it is characterized in that, described first man-made microstructure and the second man-made microstructure metal micro structure all for being made up of copper cash or silver-colored line, described metal micro structure by etching, plating, bore quarters, photoetching, electronics carve or ion quarter method be attached to respectively on the first base material and the second base material.
7. a kind of Compact range generation device according to claim 6, it is characterized in that, described metal micro structure is plane flakes, described metal micro structure has the first metal wire and the second metal wire mutually vertically divided equally, described first metal wire is identical with the length of the second metal wire, described first metal wire two ends are connected with two the first metal branch of equal length, described first metal wire two ends are connected on the mid point of two the first metal branch, described second metal wire two ends are connected with two the second metal branch of equal length, described second metal wire two ends are connected on the mid point of two the second metal branch, described first metal branch is equal with the length of the second metal branch.
8. a kind of Compact range generation device according to claim 7, it is characterized in that, each first metal branch of the alabastrine metal micro structure of described plane and the two ends of each second metal branch are also connected with identical 3rd metal branch, and the mid point of corresponding 3rd metal branch is connected with the end points of the first metal branch and the second metal branch respectively.
9. a kind of Compact range generation device according to claim 8, it is characterized in that, first metal wire of the alabastrine metal micro structure of described plane and the second metal wire are provided with two kinks, and the alabastrine metal micro structure of described plane all overlaps with former figure to the figure of any direction 90-degree rotation around the axis perpendicular to the first metal wire and the second metal wire intersection point.
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| CN106685484B (en) * | 2016-12-08 | 2020-10-20 | 北京航空航天大学 | Near-field simulator |
| CN108539436B (en) * | 2018-04-18 | 2020-10-02 | 北京航空航天大学 | A Broadband Reflect Array Condensed Field Device with Large Angle Off-Axis Small Angle Offset Feed |
| CN108802501A (en) * | 2018-04-19 | 2018-11-13 | 北京无线电计量测试研究所 | A kind of Compact Range scanning means |
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| CN101335379A (en) * | 2007-06-25 | 2008-12-31 | 财团法人工业技术研究院 | Antenna device, antenna housing and design method thereof |
| CN101699659A (en) * | 2009-11-04 | 2010-04-28 | 东南大学 | Lens antenna |
| CN101867094A (en) * | 2010-05-02 | 2010-10-20 | 兰州大学 | A Focused Panel Antenna |
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| US7570221B2 (en) * | 2007-09-26 | 2009-08-04 | Northrop Grumman Corporation | Reduced beamwidth antenna |
| US8803738B2 (en) * | 2008-09-12 | 2014-08-12 | Toyota Motor Engineering & Manufacturing North America, Inc. | Planar gradient-index artificial dielectric lens and method for manufacture |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101335379A (en) * | 2007-06-25 | 2008-12-31 | 财团法人工业技术研究院 | Antenna device, antenna housing and design method thereof |
| CN101699659A (en) * | 2009-11-04 | 2010-04-28 | 东南大学 | Lens antenna |
| CN101867094A (en) * | 2010-05-02 | 2010-10-20 | 兰州大学 | A Focused Panel Antenna |
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