CN103293392A - Compact range generating device - Google Patents

Abstract

The invention discloses a compact range generating device which comprises a feed source and a metamaterial panel arranged behind the feed source, wherein the feed source is arranged on the lower edge of the metamaterial panel. The metamaterial panel comprises a core layer and a reflective board arranged on the surface of one side of the core layer. The core layer comprises a plurality of core layer sheet layers which have the same thickness and refractive index distribution. Each core layer sheet layer comprises a sheet-shaped first base material and a plurality of first man-made microstructures, wherein the first man-made microstructures are arranged on the sheet-shaped first base materials, and the refractive index distribution of the core layer sheet layers meet a certain condition, so electromagnetic waves emitted by the feed source can be emitted out in a plane wave mode after pasting through the metamaterial panel. According to the compact range generating device, as the sheet-shaped metamaterial panel replaces a traditional parabolic reflective surface, manufacturing and processing are easier and cost is lower.

Description

A kind of deflation generation device

Technical field

The present invention relates to the antenna measurement field, more particularly, relate to a kind of deflation field generation device based on super material.

Background technology

Tightening is a kind of smooth reflecting surface that leans on closely in, comprises single reflecting surface and double-reflecting face, and the spherical wave that feed is sent becomes the testing apparatus of plane wave.The plane wave environment that it produces can fully satisfy the test request of antenna radiation pattern, thereby reaches the purpose of in closely antenna being tested.Tighten to be divided on the field system and tighten an antenna part and microwave dark room part.In the prior art, tightening an antenna part is to adopt accurate reflecting surface, the spherical wave that point source is produced is a covering device of plane wave in inner conversion closely, usually according to designing requirement, be installed on the position of antenna part in the microwave dark room exactly, and regulate levelness, by to tightening a processing at antenna reflective face edge and the cooperation of microwave dark room, create a dead zone at the space test zone, can simulate the radiation characteristic of measured object in unreflected free space in the dead zone.

Compare with outdoor far field and indoor near field, tighten the field and mainly have following characteristics:

1, the deflation field that is installed in microwave dark room has confidentiality preferably;

2, be installed in indoor deflation field and be subjected to the weather environmental impact little, improved test condition, and then improved the measurement efficient of RCS (Radar Cross-Section, RCS);

3, outdoor far field test problem can be converted in the darkroom closely test problem.

These characteristics have determined to tighten an important testing apparatus that is the research electromagnetic scattering, also are the important foundation facilities of system performance testings such as the whole star test of advanced capabilities radar antenna measurement, satellite, the test of aircraft reflection characteristic.Simultaneously, tighten field technology and more and more bringing into play irreplaceable effect in military field.No matter be satellite, aircraft, or the stealthy performance test of Large-size Arms and Equipments such as guided missile, tank, artillery, adjustment etc., all depend on the technical role that performance is tightened.We can say that the technical merit of deflation field how, not only restricting performance and the quality of army's weaponry, also be related to the national defense safety problem of a country.Therefore, each big military power is all tightening field system as one of defense strategy technology now, in addition research and development of emphasis.

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 set up the deflation field system of oneself, very easy to use and quick.Tighten field system as the sophisticated equipment of modern antennas test, have more and more important techniques progress meaning undoubtedly and use 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 big, approximately big three times than the test dead zone, the mechanical platform of making the parabolic shape reflecting surface is very complicated, reaching preferably, reflecting surface technology also compares difficulty, surface treatment dependency degree height, involve great expense, and the feed position must place on the focus of reflecting surface, otherwise cannot reach the conversion of spherical wave and plane wave, and the distance of the focus of reflecting surface and smooth reflecting surface has caused very big difficulty to precision of manufacturing process.

Summary of the invention

The objective of the invention is to overcome prior art make smooth reflecting surface must be very big, and difficulty in process, complexity, the defective that involves great expense, a kind of deflation field generation device based on super material is provided, this device adopts super material manufacturing to tighten the antenna part of field, the sphere electromagnetic wave is converted to plane electromagnetic wave, makes simply low price.

In order to achieve the above object, the following technical scheme of the present invention's employing:

A kind of deflation generation device, the super material panel that described device comprises feed and is arranged on the feed rear, described feed is arranged on the lower edge of super material panel, described super material panel comprises core layer and is arranged on the reflecting plate of core layer one side surface, described core layer comprises a plurality of core layer lamellas that thickness is identical and index distribution is identical, described core layer lamella comprises first base material of sheet and is arranged on a plurality of first artificial microstructure on first base material that the index distribution of described core layer lamella satisfies following formula:

$n\left(r\right)=n_{\max }-\frac{\sqrt{{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HDA0000139686770000051.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+s^2}-\mathrm{Vseg}}{D};$

Vseg＝s+λ*NUMseg；

$\mathrm{NUMseg}=\mathrm{floor}\left\{\frac{\sqrt{{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HDA0000139686770000051.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+s^2}-s}{\mathrm{\&lambda;}}\right\};$

$D=\frac{\mathrm{\&lambda;}}{n_{\max }-n_{\min }};$

Wherein, radius is the refractive index value at r place on n (r) the expression core layer lamella;

S is the vertical range of feed equivalent point to super material panel;

n _MaxThe maximal value of the refractive index of expression core lamella;

n _MinThe minimum value of the refractive index of expression core lamella;

λ represents electromagnetic wavelength;

Floor represents to round downwards.

Further, described first base material comprises first prebasal plate and first metacoxal plate of sheet, and the described a plurality of first artificial microstructure is folded between first prebasal plate and first metacoxal plate.

Further, described super material panel also comprises the impedance matching layer that is arranged on core layer opposite side surface, described impedance matching layer comprises a plurality of impedance matching layer lamellas that thickness is identical, described impedance matching layer lamella comprises second base material of sheet and is arranged on a plurality of second artificial microstructure on second base material that the index distribution of described impedance matching layer lamella satisfies following formula:

$n_i\left(r\right)={n_{\min }}^{\frac{i}{m}}*n{\left(r\right)}^{\frac{m-i}{m}};$

λ＝(n _max-n _min)*(d1+2*d2)；

Wherein, i represents the numbering of impedance matching layer lamella, and near the m that is numbered of the impedance matching layer lamella of feed, to the core layer direction, numbering reduces successively by feed, is numbered 1 near the impedance matching layer lamella of core layer;

Above-mentioned n _MaxWith n _MinIdentical with maximal value and the minimum value of the refractive index of core layer lamella;

D1 is the thickness of impedance matching layer;

D2 is the thickness of core layer.

Further, described second base material comprises second prebasal plate and second metacoxal plate of sheet, and the described a plurality of second artificial microstructure is folded between second prebasal plate and second metacoxal plate.

Further, the longitudinal section of described super material panel is square, circular or oval.

Further, the described first artificial microstructure and the second artificial microstructure be the metal micro structure for being made of copper cash or silver-colored line all, and described metal micro structure is attached to respectively on first base material and second base material by etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method.

Further, described metal micro structure is the plane flakes, described metal micro structure has first metal wire and second metal wire of vertically dividing equally mutually, described first metal wire is identical with the length of second metal wire, the described first metal wire two ends are connected with two first metal branches of equal length, the described first metal wire two ends are connected on the mid point of two first metal branches, the described second metal wire two ends are connected with two second metal branches of equal length, the described second metal wire two ends are connected on the mid point of two second metal branches, the equal in length of the described first metal branch and the second metal branch.

Further, each first metal branch of the alabastrine metal micro structure in described plane and the two ends of each second metal branch also are connected with identical the 3rd metal branch, and the mid point of corresponding the 3rd metal branch links to each other 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 in described plane and second metal wire are provided with two kinks, and the alabastrine metal micro structure in described plane winds and revolves the figure that turn 90 degrees with the axis of the second metal wire intersection point to any direction perpendicular to first metal wire and all overlap with former figure.

According to a deflation of the present invention generation device, replaced traditional parabolical reflecting surface by the super material panel of sheet, to make processing and be more prone to, cost is cheaper.

Description of drawings

Fig. 1 is the structural representation that tightens a generation device of the present invention;

Fig. 2 is the perspective diagram of one of them super material cell of core layer lamella of the present invention;

Fig. 3 is the structural representation of core layer lamella of the present invention;

Fig. 4 is the structural representation of impedance matching layer lamella of the present invention;

Fig. 5 is the synoptic diagram of the alabastrine metal micro structure in plane of the present invention;

Fig. 6 is a kind of derived structure of the alabastrine metal micro structure in plane shown in Figure 5;

Fig. 7 is a kind of distressed structure of the alabastrine metal micro structure in plane shown in Figure 5.

Fig. 8 is phase one of differentiation of the topology of the alabastrine metal micro structure in plane;

Fig. 9 is the subordinate phase of differentiation of the topology of the alabastrine metal micro structure in plane.

Embodiment

As shown in Figure 1 to Figure 3, a kind ofly according to the present invention tighten the super material panel 100 that a generation device comprises feed 1 and is arranged on feed 1 rear, described feed 1 is arranged on the lower edge of super material panel 100, described super material panel 100 comprises core layer 10 and is arranged on reflecting plate 200 on core layer one side surface, described core layer 10 comprises a plurality of core layer lamellas 11 that thickness is identical and index distribution is identical, described core layer lamella comprises first base material 13 of sheet and is arranged on a plurality of first artificial microstructure 12 on first base material 13, the axis Z2 of feed central shaft Z1 and super material panel 100 has certain included angle θ, and namely the angle of the axis Z1 among Fig. 1 and straight line Z3 (Z3 is the parallel lines of Z1) feed 1 is not on the Z2 of the axis of super material panel 100.Feed is traditional corrugated horn in addition.The vertical sectional shape of core layer lamella can be square, circular or oval according to different needs.In addition, among the present invention, reflecting plate is the metallic reflection plate with smooth surface, for example can be copper coin, aluminium sheet or the iron plate etc. of polishing, also PEC (desired electrical conductor) reflecting surface.

Among the present invention, the index distribution of described core layer lamella satisfies following formula:

$n\left(r\right)=n_{\max }-\frac{\sqrt{r^2+s^2}-\mathrm{Vseg}}{D}---\left(1\right);$

Vseg＝s+λ*NUMseg(2)；

$\mathrm{NUMseg}=\mathrm{floor}\left\{\frac{\sqrt{{\mathrm{<figure-callout\; id="2"\; label="r"\; filenames="HDA0000139686770000051.png"\; state="\{\{state\}\}">r</figure-callout>}}^2+s^2}-s}{\mathrm{\&lambda;}}\right\}---\left(3\right);$

$D=\frac{\mathrm{\&lambda;}}{n_{\max }-n_{\min }}---\left(4\right);$

Wherein, radius is the refractive index value at r place on n (r) the expression core layer lamella;

S is that feed equivalent point X is to the vertical range of super material panel; When the angle theta of the axis Z2 of feed central shaft Z1 and super material panel 100 changed, slight change also can take place in s.

n _MaxThe maximal value of the refractive index of expression core lamella;

n _MinThe minimum value of the refractive index of expression core lamella;

λ represents electromagnetic wavelength;

Floor represents to round downwards, for example, when

(r is in a certain numerical range) more than or equal to 0 less than 1 o'clock, NUMseg gets 0, when

(r is in a certain numerical range) more than or equal to 1 less than 2 o'clock, NUMseg gets 1, and the rest may be inferred.

To the determined super material panel of formula (4), the electromagnetic wave that can make feed send can be with the form outgoing of plane wave behind super material panel by formula (1).

Among the present invention, as shown in Figure 3, described first base material 13 comprises first prebasal plate 131 and first metacoxal plate 132 of sheet, and the described a plurality of first artificial microstructure 12 is folded between first prebasal plate 131 and first metacoxal plate 132.Preferably, the thickness of described core layer lamella is 0.818mm, and wherein, the thickness of first prebasal plate and first metacoxal plate is 0.4mm, and the thickness of a plurality of first artificial microstructures is 0.018mm.

Among the present invention, described super material panel 100 also comprises the impedance matching layer 20 that is arranged on core layer 10 opposite side surfaces, described impedance matching layer 20 comprises a plurality of impedance matching layer lamellas 21 that thickness is identical, described impedance matching layer lamella 21 comprises second base material 23 of sheet and is arranged on a plurality of second artificial microstructure on second base material 23 (indicating among the figure) that the index distribution of described impedance matching layer lamella satisfies following formula:

$n_i\left(r\right)={n_{\min }}^{\frac{i}{m}}*n{\left(r\right)}^{\frac{m-i}{m}}---\left(5\right);$

λ＝(n _max-n _min)*(d1+2*d2)(6)；

Wherein, i represents the numbering of impedance matching layer lamella, and near the m that is numbered of the impedance matching layer lamella of feed, to the core layer direction, numbering reduces successively by feed, is numbered 1 near the impedance matching layer lamella of core layer;

Above-mentioned n _MaxWith n _MinIdentical with maximal value and the minimum value of the refractive index of core layer lamella;

D1 is the thickness of impedance matching layer, i.e. the product of the thickness of impedance matching layer lamella and the number of plies.

D2 is the thickness of core layer, i.e. the product of the thickness of core layer lamella and the number of plies.

Among the present invention, as shown in Figure 4, described second base material 23 comprises second prebasal plate 231 and second metacoxal plate 232 of sheet, and the described a plurality of second artificial microstructure is folded between second prebasal plate 231 and second metacoxal plate 232.Preferably, the thickness of described impedance matching layer lamella is 0.818mm, and wherein, the thickness of second prebasal plate and second metacoxal plate is 0.4mm, and the thickness of a plurality of second artificial microstructures is 0.018mm.

Formula (6) be used for to be determined the thickness of core layer and matching layer, after the thickness of core layer is definite, utilizes formula (6) can obtain the thickness of matching layer, namely obtains the number of stories m of impedance matching layer divided by every layer thickness with this thickness.

Among the present invention, the arbitrary longitudinal section of described super material 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 super material panel in the super material panel.The longitudinal section of described super material panel is square, circular or oval, and preferably, the longitudinal section of described super material flat-plate lens is square, and the super material panel that obtains is like this processed easily.Preferably, the longitudinal section of super material panel of the present invention is that the length of side is the square of 400mm.

Among the present invention, the described first artificial microstructure, the second artificial microstructure be the metal micro structure for being made of copper cash or silver-colored line all, and described metal micro structure is attached to first base material, second base material respectively by etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method.Preferably, the described first artificial microstructure, the second artificial microstructure are the alabastrine metal micro structure in plane shown in Figure 5 develops a plurality of different topology that obtains by topology metal micro structure.

Among the present invention, the core layer lamella can obtain by the following method, namely cover copper on any one surface of first prebasal plate and first metacoxal plate, obtain a plurality of first metal micro structures (shape of a plurality of first metal micro structures with arrange in advance to obtain by Computer Simulation) by etching method again, at last first prebasal plate and first metacoxal plate are pressed together respectively, namely obtain core layer lamella of the present invention, the method of pressing can be direct hot pressing, also can be to utilize hot melt adhesive to connect, certainly also other mechanical connection, for example bolt connects.

In like manner, the impedance matching layer lamella also can utilize identical method to obtain.Respectively with a plurality of core layer lamella pressing one, namely formed core layer of the present invention then; Equally, with a plurality of impedance matching layer lamella pressing one, namely formed impedance matching layer of the present invention; Core layer, impedance matching layer pressing one are namely obtained super material panel of the present invention.

Among the present invention, described first base material, second base material are made 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, among the present invention, first prebasal plate of described first base material adopts identical FR-4 compound substance with first metacoxal plate; Equally, among the present invention, second prebasal plate of described second base material also adopts identical FR-4 compound substance with second metacoxal plate.

Figure 5 shows that the synoptic diagram of the alabastrine metal micro structure in plane, described alabastrine metal micro structure has the first metal wire J1 and the second metal wire J2 that vertically divides equally mutually, the described first metal wire J1 is identical with the length of the second metal wire J2, the described first metal wire J1 two ends are connected with two first F1 of metal branch of equal length, the described first metal wire J1 two ends are connected on the mid point of two first F1 of metal branch, the described second metal wire J2 two ends are connected with two second F2 of metal branch of equal length, the described second metal wire J2 two ends are connected on the mid point of two second F2 of metal branch, the equal in length of described first F1 of metal branch and second F2 of metal branch.

Fig. 6 is a kind of derived structure of the alabastrine metal micro structure in plane shown in Figure 5.Its two ends at each first F1 of metal branch and each second F2 of metal branch all are connected with identical the 3rd F3 of metal branch, and the mid point of corresponding the 3rd F3 of metal branch links to each other with the end points of first F1 of metal branch and second F2 of metal branch 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 in plane shown in Figure 5, the metal micro structure of this kind structure, the first metal wire J1 and the second metal wire J2 are not straight lines, but folding line, the first metal wire J1 and the second metal wire J2 are 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 first metal wire and second metal wire, make metal micro structure shown in Figure 7 wind to revolve the figure that turn 90 degrees with the axis of the second metal wire intersection point to any direction perpendicular to first metal wire all to overlap with former figure.In addition, other distortion can also be arranged, for example, the first metal wire J1 and the second metal wire J2 all arrange a plurality of kink WZ.

Among the present invention, described core layer lamella 11 can be divided into a plurality of super material cell D as shown in Figure 2 of array arrangement, each super material cell D comprises prebasal plate unit U, metacoxal plate unit V and is arranged on the first artificial microstructure 12 between base board unit U, the metacoxal plate unit V, usually the length and width height of super material cell D all is not more than 1/5th wavelength, be preferably 1/10th wavelength, therefore, can determine the size of super material cell D according to the frequency of operation that tightens the field.Fig. 2 is the technique of painting of perspective, and with the position among the super material cell D that represents the first artificial microstructure, as shown in Figure 2, the described first artificial microstructure is sandwiched between base board unit U, the metacoxal plate unit V, and its surface, place is represented with SR.

Known refractive index

Wherein μ is relative permeability, and ε is relative dielectric constant, and μ and ε are collectively referred to as electromagnetic parameter.Experiment showed, when electromagnetic wave passes through refractive index dielectric material heterogeneous, can be to the big direction deviation of refractive index.Under the certain situation of relative permeability (usually near 1), refractive index is only relevant with specific inductive capacity, under the situation that first base material is selected, utilize the arbitrary value (within the specific limits) that only can realize super material cell refractive index to the first artificial microstructure of electric field response, tighten under the frequency of operation (12.5GHZ) at this, utilize simulation software, as CST, MATLAB etc., obtain the situation that the specific inductive capacity of the artificial microstructure (the alabastrine metal micro structure in plane as shown in Figure 5) of a certain given shape changes along with the refractive index variable of topology by emulation, can list data one to one, the core layer lamella 11 that the specific refractive index that can design us needs distributes, in like manner can obtain the index distribution of impedance matching layer lamella, thereby obtain the index distribution of whole super material panel 100.

Among the present invention, the structural design of core layer lamella can obtain by Computer Simulation (CST emulation), and is specific as follows:

That (1) determines first metal micro structure adheres to base material (first base material).During this was bright, first prebasal plate of described first base material adopted identical FR-4 compound substance to make with first metacoxal plate, and described FR-4 compound substance is made has a predetermined dielectric constant, and for example specific inductive capacity is 3.3 FR-4 compound substance.

(2) size of definite super material cell.The size of the size of super material cell is obtained by a frequency of operation that tightens, utilizes frequency to obtain its wavelength, gets less than 1/5th a numerical value of wavelength length C D and the width KD as super material cell D again.Among the present invention, described super material cell D is the square platelet that 2.5mm, thickness HD are 0.818mm for long CD and wide KD as shown in Figure 2.

(3) determine material and the topological structure of metal micro structure.Among 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 in plane shown in Figure 5, and its live width W is consistent everywhere; Topological structure herein refers to the basic configuration that topology develops.

(4) determine the topology parameter of metal micro structure.As shown in Figure 5, among the present invention, the topology parameter of the alabastrine metal micro structure in plane comprises the live width W of metal micro structure, the length a of the first metal wire J1, the length b of first F1 of metal branch.

(5) determine the differentiation restrictive condition of the topology of metal micro structure.Among the present invention, the differentiation restrictive condition of the topology of metal micro structure has, the minimum spacing WL between the metal micro structure (namely as shown in Figure 8, the distance of the long limit of metal micro structure and super material cell or broadside is WL/2), the live width W of metal micro structure, the size of super material cell; Because the processing technology restriction, WL is more than or equal to 0.1mm, and same, live width W is greater than to equal 0.1mm.Among the present invention, WL gets 0.1mm, and W gets 0.3mm, and super material cell is of a size of the long and wide 2.5mm that is, thickness is 0.818mm, and this moment, the topology parameter of metal micro structure had only a and two variablees of b.The passing through as Fig. 8 of the topology of metal micro structure corresponding to a certain characteristic frequency (for example 12.5GHZ), can obtain a continuous variations in refractive index scope to differentiation mode shown in Figure 9.

Particularly, the differentiation of the topology of described metal micro structure comprises two stages (basic configuration that topology develops is metal micro structure shown in Figure 5):

Phase one: according to developing restrictive condition, under the situation that the 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 (except when a gets minimum value).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, and then the maximal value of a is 2.4mm.Therefore, in the phase one, 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 " ten " font topology JD1 of maximum, the first metal wire J1 and the second metal wire J2 length are 2.4mm, and width W is 0.3mm.In the phase one, along with the differentiation of the topology of metal micro structure, the refractive index of the super material cell corresponding with it increase continuously ((corresponding tighten a characteristic frequency), when frequency is 12.5GHZ, the minimum value n of the refractive index of super material cell correspondence _MinBe 1.91.

Subordinate phase: according to developing restrictive condition, when a was increased to maximal value, a remained unchanged; At this moment, b is increased continuously maximal value from minimum value, the metal micro structure in this evolution process is the 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, and 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 " ten " font topology JD1 of maximum, develop into the maximum alabastrine topology JD2 in plane gradually, the alabastrine topology JD2 in the plane of maximum herein refers to that the length b of first J1 of metal branch and second J2 of metal branch can not extend again, otherwise the first metal branch and the second metal branch will take place to intersect, and the maximal value of b is 1.8mm.At this moment, first metal wire and the second metal wire length 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 super material cell corresponding with it increases (corresponding tighten a characteristic frequency) continuously, when frequency is 12.5GHZ, and the maximal value n of the refractive index of super material cell correspondence _MaxBe 5.6.

The variations in refractive index scope (1.91-5.6) that obtains super material cell by above-mentioned differentiation satisfies the design needs.Do not satisfy the design needs if above-mentioned differentiation obtains the variations in refractive index scope of super material cell, for example maximal value is too little, then changes WL and W, and emulation again is up to obtaining the variations in refractive index scope that we need.

According to formula (1), after a series of super material cell that emulation is obtained is arranged according to its corresponding refractive index (in fact being exactly a plurality of first artificial microstructure the arranging on first base material of different topology shape), can obtain core layer lamella of the present invention.

In like manner, can obtain impedance matching layer lamella of the present invention.

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 only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away under the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.

Claims (9)

1. one kind tightens a generation device, it is characterized in that, the super material panel that described device comprises feed and is arranged on the feed rear, described feed is arranged on the lower edge of super material panel, described super material panel comprises core layer and is arranged on the reflecting plate of core layer one side surface, described core layer comprises a plurality of core layer lamellas that thickness is identical and index distribution is identical, described core layer lamella comprises first base material of sheet and is arranged on a plurality of first artificial microstructure on first base material that the index distribution of described core layer lamella satisfies following formula:

$n\left(r\right)=n_{\max }-\frac{\sqrt{r^2+s^2}-\mathrm{Vseg}}{D};$

Vseg＝s+λ*NUMseg；

$\mathrm{NUMseg}=\mathrm{floor}\left\{\frac{\sqrt{r^2+s^2}-s}{\mathrm{\&lambda;}}\right\};$

$D=\frac{\mathrm{\&lambda;}}{n_{\max }-n_{\min }};$

Wherein, radius is the refractive index value at r place on n (r) the expression core layer lamella;

S is the vertical range of feed equivalent point to super material panel;

n _MaxThe maximal value of the refractive index of expression core lamella;

n _MinThe minimum value of the refractive index of expression core lamella;

λ represents electromagnetic wavelength;

Floor represents to round downwards.

2. a kind of deflation generation device according to claim 1 is characterized in that described first base material comprises first prebasal plate and first metacoxal plate of sheet, and the described a plurality of first artificial microstructure is folded between first prebasal plate and first metacoxal plate.

3. an a kind of deflation according to claim 2 generation device, it is characterized in that, described super material panel also comprises the impedance matching layer that is arranged on core layer opposite side surface, described impedance matching layer comprises a plurality of impedance matching layer lamellas that thickness is identical, described impedance matching layer lamella comprises second base material of sheet and is arranged on a plurality of second artificial microstructure on second base material that the index distribution of described impedance matching layer lamella satisfies following formula:

$n_i\left(r\right)={n_{\min }}^{\frac{i}{m}}*n{\left(r\right)}^{\frac{m-i}{m}};$

λ＝(n _max-n _min)*(d1+2*d2)；

Wherein, i represents the numbering of impedance matching layer lamella, and near the m that is numbered of the impedance matching layer lamella of feed, to the core layer direction, numbering reduces successively by feed, is numbered 1 near the impedance matching layer lamella of core layer;

Above-mentioned n _MaxWith n _MinIdentical with maximal value and the minimum value of the refractive index of core layer lamella;

D1 is the thickness of impedance matching layer;

D2 is the thickness of core layer.

4. a kind of deflation generation device according to claim 3 is characterized in that described second base material comprises second prebasal plate and second metacoxal plate of sheet, and the described a plurality of second artificial microstructure is folded between second prebasal plate and second metacoxal plate.

5. a kind of deflation generation device according to claim 1 is characterized in that, the longitudinal section of described super material panel is square, circular or oval.

6. an a kind of deflation according to claim 4 generation device, it is characterized in that, the described first artificial microstructure and the second artificial microstructure be the metal micro structure for being made of copper cash or silver-colored line all, and described metal micro structure is attached to respectively on first base material and second base material by etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method.

7. an a kind of deflation according to claim 6 generation device, it is characterized in that, described metal micro structure is the plane flakes, described metal micro structure has first metal wire and second metal wire of vertically dividing equally mutually, described first metal wire is identical with the length of second metal wire, the described first metal wire two ends are connected with two first metal branches of equal length, the described first metal wire two ends are connected on the mid point of two first metal branches, the described second metal wire two ends are connected with two second metal branches of equal length, the described second metal wire two ends are connected on the mid point of two second metal branches, the equal in length of the described first metal branch and the second metal branch.

8. an a kind of deflation according to claim 7 generation device, it is characterized in that, each first metal branch of the alabastrine metal micro structure in described plane and the two ends of each second metal branch also are connected with identical the 3rd metal branch, and the mid point of corresponding the 3rd metal branch links to each other with the end points of the first metal branch and the second metal branch respectively.

9. an a kind of deflation according to claim 8 generation device, it is characterized in that, first metal wire of the alabastrine metal micro structure in described plane and second metal wire are provided with two kinks, and the alabastrine metal micro structure in described plane winds and revolves the figure that turn 90 degrees with the axis of the second metal wire intersection point to any direction perpendicular to first metal wire and all overlap with former figure.

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