CN103296458B - A kind of antenna for satellite communication in motion - Google Patents

Abstract

The invention discloses a kind of antenna for satellite communication in motion, including in funnelform metamaterial structure, described metamaterial structure is formed by four identical trapezoidal metamaterial flat assembly, the corresponding feed of each metamaterial flat, each metamaterial flat includes core layer and is arranged on the reflecting layer of core layer one side surface, core layer includes a core layer or multiple identical core layer, the first base material that each core layer includes lamellar and multiple first man-made microstructure being arranged on the first base material, index distribution by careful design core layer, make the electromagnetic wave sent by each feed can be with the form outgoing of plane wave after corresponding metamaterial flat, or from the plane wave of special angle come on satellite after metamaterial flat can at corresponding feed at converge.According to the antenna for satellite communication in motion of the present invention, the metamaterial flat of four lamellars combining and replace traditional parabola antenna, manufacture processing and be more prone to, cost is cheaper.

Description

A kind of antenna for satellite communication in motion

Technical field

The present invention relates to the communications field, more particularly, it relates to a kind of antenna for satellite communication in motion.

Background technology

Communication in moving is the abbreviation of " the ground satellite station communication system in Yi Dong ".By communication in moving system, vehicle, steamer, The carrier of the movements such as aircraft in motor process can the platform such as real-time tracking satellite, transmit voice, data, image etc. incessantly Multimedia messages, can meet the needs of multimedia communication under various military-civil emergency communication and mobile condition.Communication in moving system Solve the mobile vehicles such as various vehicle, steamer well at the volley by geostationary satellite, the most constantly transmit language The difficulty of the multimedia messages such as sound, data, the dynamic video image of high-resolution, fax, is the most great the dashing forward of the communications field Application that is broken, that be that the present satellites communications field is in great demand, quickly grow, has extremely wide in two fields of the army and the people Development prospect.

As an important component part of communication in moving system, antenna for satellite communication in motion is responsible for the reception of signal of communication and/or sends out Sending, traditional antenna for satellite communication in motion typically uses parabola antenna.

But owing to the Machining of Curved Surface difficulty of the reflecting surface of parabola antenna is big, required precision is the highest, therefore, manufactures fiber crops Tired and relatively costly.

Summary of the invention

The technical problem to be solved is, is difficult to for the processing of existing antenna for satellite communication in motion, defect that cost is high, There is provided a kind of and process simple, the antenna for satellite communication in motion of low cost of manufacture.

The technical solution adopted for the present invention to solve the technical problems is: a kind of antenna for satellite communication in motion, described antenna for satellite communication in motion Including in funnelform metamaterial structure, described metamaterial structure is by four identical trapezoidal metamaterial flat assembly shapes Becoming, the corresponding feed of each metamaterial flat, each metamaterial flat includes core layer and is arranged on core layer one side surface Reflecting layer, described core layer includes a core layer or multiple identical core layer, each core layer Including the first base material of lamellar and multiple first man-made microstructure of being arranged on the first base material, the folding of described core layer Rate of penetrating is distributed and meets equation below:

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

Vseg=s+ λ × NUMseg；

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

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

Wherein, n (r) represents that in core layer, radius is the refractive index value at r, the index distribution circle of core layer The heart is the projection in metamaterial flat outer surface place plane of the feed equivalent point, and the described center of circle is following with metamaterial flat Along at a distance of sy；

S is the feed equivalent point vertical dimension to metamaterial flat；

n_maxRepresent the maximum of the refractive index of core layer；

n_minRepresent the minima of the refractive index of core layer；

λ represents the wavelength of the electromagnetic wave that frequency is center of antenna frequency；

Floor represents and rounds downwards.

Further, described first base material includes the first prebasal plate and first metacoxal plate of lamellar, the plurality of the first Making micro structure to be folded between the first prebasal plate and the first metacoxal plate, the thickness of described core layer is 0.21-2.5mm, its In, the thickness of the first prebasal plate is 0.1-1mm, and the thickness of the first metacoxal plate is 0.1-1mm, the thickness of multiple first man-made microstructure Degree is 0.01-0.5mm.

Further, the thickness of described core layer is 0.543mm, wherein, and the first prebasal plate and the first metacoxal plate Thickness is 0.254mm, and the thickness of multiple first man-made microstructure is 0.035mm.

Further, each metamaterial flat also includes the impedance matching layer being arranged on core layer opposite side surface, described Impedance matching layer includes an impedance matching layer lamella or the identical impedance matching layer lamella of multiple thickness, described impedance matching layer The second base material that lamella includes lamellar and multiple second man-made microstructure being arranged on the second base material, the one or more The index distribution of impedance matching layer lamella meets equation below:

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

Wherein, n_iR () represents that on impedance matching layer lamella, radius is the refractive index value at r, the folding of impedance matching layer lamella Penetrate the rate distribution center of circle and be the projection in corresponding impedance matching layer lamella outer surface place plane of the feed equivalent point；

Wherein, i represents the numbering of impedance matching layer lamella, near the numbered m of the impedance matching layer lamella of feed, by presenting Source is sequentially reduced to core layer direction, numbering, near numbered the 1 of the impedance matching layer lamella of core layer；

Above-mentioned n_max、n_minIdentical with the maximum of the refractive index of core layer, minima respectively.

Further, each metamaterial flat also includes the impedance matching layer being arranged on core layer opposite side surface, described Impedance matching layer includes an impedance matching layer lamella or the identical impedance matching layer lamella of multiple thickness, described impedance matching layer The second base material that lamella includes lamellar and multiple second man-made microstructure being arranged on the second base material, described each impedance Joining synusia layer and have single refractive index, the refractive index of the one or more impedance matching layer lamella meets below equation:

$n\left(i\right)={((n_{\max }+n_{\min })/2)}^{\frac{i}{m}};$

Wherein, m represents total number of plies of impedance matching layer, and i represents the numbering of impedance matching layer lamella, wherein, near core The numbered m of the impedance matching layer lamella of layer.

Further, described second base material includes the second prebasal plate and second metacoxal plate of lamellar, the plurality of second people Making micro structure to be folded between the second prebasal plate and the second metacoxal plate, the thickness of described impedance matching layer lamella is 0.21- 2.5mm, wherein, the thickness of the second prebasal plate is 0.1-1mm, and the thickness of the second metacoxal plate is 0.1-1mm, multiple second artificial micro- The thickness of structure is 0.01-0.5mm.

Further, described first man-made microstructure and the second man-made microstructure are all for the metal being made up of copper cash or silver wire Micro structure, described metal micro structure by etch, electroplate, bore the method at quarters, photoetching, electronics quarter or ion quarter and be respectively attached to the On one base material and the second base material.

Further, described metal micro structure is plane flakes, and described metal micro structure has and is mutually perpendicular to divide equally First metal wire and the second metal wire, the length of described first metal wire and the second metal wire is identical, described first metal wire two End connects two the first metal branch having equal length, and described first metal wire two ends are connected to two the first metal branch On midpoint, described second metal wire two ends connect two the second metal branch having equal length, described second metal wire two ends Being connected on the midpoint of two the second metal branch, the length of described first metal branch and the second metal branch is equal.

Further, each first metal branch and each second metal of the alabastrine metal micro structure of described plane divides Two ends be also associated with identical 3rd metal branch, the midpoint of corresponding 3rd metal branch respectively with the first metal The end points of branch and the second metal branch is connected.

Further, the first metal wire and second metal wire of the alabastrine metal micro structure of described plane is provided with two Individual kink, the alabastrine metal micro structure of described plane around the intersection point of the first metal wire and the second metal wire at metal micro structure All overlap with artwork to the figure of any direction 90-degree rotation in residing plane.

According to the antenna for satellite communication in motion of the present invention, by the index distribution of each piece of metamaterial flat of careful design so that The plane wave of special angle can converge after metamaterial flat at corresponding feed, therefore can be by the super material of four lamellars Material flat sheet combination replaces traditional parabola antenna, manufactures processing and is more prone to, and cost is cheaper, and that designs the most according to this is super Material plates integral thickness is in millimeter rank, and this antenna for satellite communication in motion entirety is lighter.

Accompanying drawing explanation

Fig. 1 is the relative position view of the feed that in an embodiment of the present invention, metamaterial flat is corresponding；

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 the core layer of the present invention；

Fig. 4 is the structural representation of the 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 the plane shown in Fig. 5；

Fig. 7 is a kind of distressed structure of the alabastrine metal micro structure of the 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 second stage of the differentiation of the topology of the alabastrine metal micro structure of plane；

Figure 10 is the relative position view of the feed that metamaterial flat is corresponding in another kind embodiment of the present invention；

Figure 11 is the structural representation of antenna for satellite communication in motion of the present invention；

Figure 12 is the antenna for satellite communication in motion of the present invention mounting structure schematic diagram on vehicle.

Detailed description of the invention

As shown in Fig. 1, Figure 11 and Figure 12, described antenna for satellite communication in motion DZT of the present invention is loaded in mobile vehicle YDT (such as Vehicle, boats and ships, aircraft) tip position, it includes that described metamaterial structure JG is by four in funnelform metamaterial structure JG Identical trapezoidal metamaterial flat 100 is assembled to be formed, the corresponding feed 1 of each metamaterial flat 100.Metamaterial structure The degree of depth (i.e. the distance of metamaterial structure JG upper shed SK under shed XK) of JG can regulate, at initial position metamaterial structure The degree of depth of JG and relevant with geostationary satellite to be communicated and mobile vehicle location (its degree of depth determines that in fact The elevation angle of each metamaterial flat 100), the preferably degree of depth at initial position metamaterial structure JG is arranged such that so that it In metamaterial flat just to satellite to be communicated, (electromagnetic wave that i.e. this satellite sends vertically is penetrated when arriving ground super On material plates) because mobile vehicle is even running in most cases, such most of the time antenna for satellite communication in motion is not required to Move and can keep and the communication of selected satellite, when ground injustice or when mobile vehicle turns to, by regulation Meta Materials The degree of depth of structure JG and the orientation (i.e. small angle rotation metamaterial structure JG) of metamaterial structure JG make always there is a super material Material flat board is just to satellite to be communicated, it is ensured that the persistence of communication.In the present invention, described feed 1 is traditional corrugated horn, The CL11R integral high frequency head of such as Tongzhou Electronics.

The depth adjustment of metamaterial structure JG and the orientation regulation of metamaterial structure JG are realized by servosystem CF.Should The function of servosystem CF is as follows:

(1) regulate the degree of depth of metamaterial structure JG, i.e. regulate the elevation angle of antenna for satellite communication in motion；

(2) regulate the orientation of metamaterial structure JG, i.e. regulate the azimuth of antenna for satellite communication in motion.

Two above-mentioned functions make mobile vehicle no matter under which kind of kinestate, and always having a metamaterial flat is just To satellite, it is ensured that the persistence of communication, and owing to having metamaterial flat in four orientation, therefore antenna for satellite communication in motion is only Need low-angle rotation, by controlling to select the rotation of minimum angles, therefore less demanding to servosystem.

Having in the servosystem prior art of above-mentioned functions and existed a lot, it is not the core of the present invention, and Those skilled in the art describes according to above-mentioned word and can produce the servosystem with similar functions easily, herein No longer describe in detail.

It addition, as shown in figure 12, in order to antenna for satellite communication in motion DZT is protected (waterproof, sun-proof etc.), antenna for satellite communication in motion An antenna house TXZ, the most hemispheric antenna house can also be covered in outside.

As shown in Figures 1 to 4, in one embodiment of the present of invention, the lower edge of described metamaterial flat 100 is (the most trapezoidal Minor face) be in same level with the upper end of feed 1, described metamaterial flat 100 includes core layer 10, is arranged on core layer one Reflecting layer 200 on side surface and be arranged on the impedance matching layer 20 on core layer 10 opposite side surface, described core layer 10 includes One core layer 11 or the core layer 11 that multiple thickness is identical and index distribution is identical, described core layer bag The first base material 13 including lamellar and multiple first man-made microstructure 12 being arranged on the first base material 13, described impedance matching layer 20 include an impedance matching layer lamella 21 or the identical impedance matching layer lamella 21 of multiple thickness, described impedance matching layer lamella 21 the second base materials 23 including lamellar and multiple second man-made microstructure being arranged on the second base material, feed axis Z1 with The axis Z2 of metamaterial flat 100 has the angle of axis Z1 in certain angle theta, i.e. Fig. 1 and straight line Z3, and (Z3 is Z1 Parallel lines), feed 1 is not on the axis Z2 of metamaterial flat 100, it is achieved that the offset-fed of antenna.Additionally feed is tradition Corrugated horn.It addition, in the present invention, reflecting layer is the metallic reflector with smooth surface, such as, it can be polishing Copper coin, aluminium sheet or iron plate etc., it is possible to be PEC (perfect electric conductor) reflecting surface, naturally it is also possible to be metal coating.In the present invention, The described arbitrary longitudinal section of metamaterial flat 100 is of similar shape and area, and longitudinal section herein refers in metamaterial flat The section vertical with the axis of metamaterial flat.The longitudinal section of described metamaterial flat is trapezoidal, more specifically, is base angle It it is the isosceles trapezoid of 45 degree of angles.The effect of impedance matching layer is to realize the impedance matching of 10 from air to core layer, to reduce Air and the reflection of electromagnetic wave of Meta Materials joint, reduce the loss of electromagnetic wave energy, improve satellite TV signal intensity.

In the present invention, the index distribution of described core layer meets equation below:

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

Vseg=s+ λ × NUMseg (2)；

$\mathrm{NUMseg}=\mathrm{floor}\left\{\frac{\sqrt{r^2+s^2}-s}{\mathrm{\λ}}\right\}---\left(3\right);$

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

Wherein, n (r) represents that in core layer, radius is the refractive index value at r；The index distribution circle of core layer Heart O1 is the feed equivalent point X projection in metamaterial flat outer surface place plane, described center of circle O1 and metamaterial flat Lower edge (trapezoidal minor face) at a distance of sy, it is further preferable that center of circle O1 is vertical with the line at the midpoint, lower edge of metamaterial flat The lower edge of metamaterial flat；

S is the feed equivalent point X vertical dimension to metamaterial flat；The equivalent point X of feed is actually antenna herein Feed point (electromagnetic wave occur in feed focus on point)；The folder of feed axis Z1 and the axis Z2 of metamaterial flat 100 When angle θ changes, s also can occur slight change.

n_maxRepresent the maximum of the refractive index of core layer；

n_minRepresent the minima of the refractive index of core layer；

λ represents the wavelength of the electromagnetic wave that frequency is center of antenna frequency；

D is the equivalent thickness of metamaterial flat, in the present embodiment, it is preferable that equivalent thickness D is equal to the thickness of impedance matching layer Degree is plus the thickness of the core layer of twice；Core layer can set according to different needs from the quantity of impedance matching layer lamella Fixed, for example, it may be three core layer, six impedance matching layer lamellas；May also be two core layer, four impedances Matching layer lamella；May also be two core layer, three impedance matching layer lamellas；May also be two core layer, two Impedance matching layer lamella；May also be a core layer, an impedance matching layer lamella；

Floor represents and rounds downwards, such as, when(r is in a certain numerical range) is less than 1 more than or equal to 0 Time, NUMseg takes 0, whenWhen (r is in a certain numerical range) is less than 2 more than or equal to 1, NUMseg takes 1, according to this class Push away.

By formula (1) to metamaterial flat determined by formula (4), it is possible to make the electromagnetic wave that feed sends through Meta Materials Can be with the form outgoing of plane wave after flat board；Equally, as it is shown in figure 1, by formula (1) to Meta Materials determined by formula (4) Flat board, it is possible to the electromagnetic wave (being regarded as plane wave when arriving ground) that satellite is sent can be in feedback after metamaterial flat Converge at the equivalent point X in source；Certainly, when receiving satellite antenna signals, the normal direction of metamaterial flat is directed towards institute Satellite to be received, as to how make the normal direction of metamaterial flat towards the satellite of signal to be received, then relate to To the problem of traditional satellite antenna debugging, i.e. about the regulation of antenna azimuth Yu the angle of pitch, it passes through servosystem To realize, it is common knowledge, the most no longer states.

In the present embodiment, as it is shown on figure 3, described first base material 13 includes base after the first prebasal plate 131 and first of lamellar Plate 132, the plurality of first man-made microstructure 12 is folded between the first prebasal plate 131 and the first metacoxal plate 132.Described core The thickness of synusia layer is 0.5-2mm, and wherein, the thickness of the first prebasal plate is 0.5-1mm, and the thickness of the first metacoxal plate is 0.5- 1mm, the thickness of multiple first man-made microstructure is 0.01-0.5mm.Preferably, the thickness of described core layer is 0.543mm, wherein, the thickness of the first prebasal plate and the first metacoxal plate is 0.254mm, the thickness of multiple first man-made microstructure For 0.035mm.

In the present embodiment, the index distribution of the one or more impedance matching layer lamella meets equation below:

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

Wherein, n_iR () represents that on impedance matching layer lamella, radius is the refractive index value at r, the folding of impedance matching layer lamella Penetrate the rate distribution center of circle and be the projection in corresponding impedance matching layer lamella outer surface place plane of the feed equivalent point, preferably Ground, the vertical Meta Materials of line in the index distribution center of circle of impedance matching layer lamella and the index distribution center of circle of core layer Flat board；

Wherein, i represents the numbering of impedance matching layer lamella, near the numbered m of the impedance matching layer lamella of feed, by presenting Source is sequentially reduced to core layer direction, numbering, near numbered the 1 of the impedance matching layer lamella of core layer；

N (r) herein represents that in core layer, radius is the refractive index value at r；

Above-mentioned n_max、n_minIdentical with the maximum of the refractive index of core layer, minima respectively；

Specifically, such as m=2, then the impedance matching layer limited by formula (5), near the impedance matching layer of core layer The index distribution of lamella is:

$n_1\left(r\right)={n_{\min }}^{\frac{1}{2}}\×n{\left(r\right)}^{\frac{1}{2}};$

Its index distribution of impedance matching layer near feed is:

n₂(r)=n_min；

Certainly, impedance matching layer is not limited to this, and described each impedance matching layer lamella can also have single refraction Rate, the refractive index of the one or more impedance matching layer lamella meets below equation:

$n\left(i\right)={((n_{\max }+n_{\min })/2)}^{\frac{i}{m}}---\left(6\right);$

Wherein, m represents total number of plies of impedance matching layer, and i represents the numbering of impedance matching layer lamella, wherein, near core The numbered m, above-mentioned n of the impedance matching layer lamella of layer_max、n_minRespectively with the maximum of the refractive index of core layer, Little value is identical.

Specifically, such as m=2, then the impedance matching layer limited by formula (6), near the impedance matching layer of core layer The index distribution of lamella is:

N (2)=(n_max+n_min)/2；

Its index distribution of impedance matching layer near feed is:

$n\left(1\right)={((n_{\max }+n_{\min })/2)}^{\frac{1}{2}};$

In the present invention, described second base material 23 includes the second prebasal plate 231 and the second metacoxal plate 232 of lamellar, described many Individual second man-made microstructure is folded between the second prebasal plate 231 and the second metacoxal plate 232.The thickness of described impedance matching layer lamella Degree is 0.21-2.5mm, and wherein, the thickness of the first prebasal plate is 0.1-1mm, and the thickness of the first metacoxal plate is 0.1-1mm, multiple The thickness of the first man-made microstructure is 0.01-0.5mm.Preferably, the thickness of described impedance matching layer lamella is 0.543mm, its In, the thickness of the second prebasal plate and the second metacoxal plate is 0.254mm, and the thickness of multiple second man-made microstructure is 0.035mm.

In the present embodiment, the arbitrary longitudinal section of described metamaterial flat is of similar shape and area, i.e. core layer with Join layer and be of similar shape the longitudinal section with area, longitudinal section herein refer in metamaterial flat with in metamaterial flat The section that axis is vertical.The longitudinal section of described metamaterial flat is trapezoidal, more specifically, be base angle be the isosceles of 45 degree of angles Trapezoidal.

Feed equivalent point X is determined by s, θ and sy jointly with the relative position of metamaterial flat, and generally, feed equivalent point is Being selected on the Z1 of feed axis, the position of feed equivalent point is relevant with the bore of feed, such as, can be and feed bore midpoint Y At a distance of the position (distance of the X point that ds is in Fig. 1 to Y point) of ds, as an embodiment, described ds is equal to 5mm, actually In the design, ds with θ is relevant, and along with the difference of θ, feed equivalent point X position is the most different, i.e. ds is different, but, feed etc. Effect point is still on the Z1 of feed axis.

In the present embodiment, described first man-made microstructure, the second man-made microstructure are all for the gold being made up of copper cash or silver wire Belonging to micro structure, the method that described metal micro structure is carved by etching, electroplate, bore quarter, photoetching, electronics quarter or ion is respectively attached to First base material, the second base material.Preferably, described first man-made microstructure, the second man-made microstructure are the plane snow shown in Fig. 5 Flower-shaped metal micro structure develops the metal micro structure of the multiple different topology obtained by topology.

In the present embodiment, core layer can obtain by the following method, i.e. at the first prebasal plate and the first metacoxal plate The surface overlying copper of any one, then lead to overetched method and obtain multiple first metal micro structure (multiple first metals are micro- The shape of structure is obtained by Computer Simulation in advance with arrangement), finally by the first prebasal plate and the pressing respectively of the first metacoxal plate Together, i.e. obtaining the core layer of the present invention, the method for pressing can be direct hot pressing, it is also possible to be to utilize PUR even Connect, certainly may also be other mechanical connection, such as bolt and connect.

In like manner, impedance matching layer lamella can also utilize identical method to obtain.The most respectively by multiple core layer Pressing one, i.e. defines the core layer of the present invention；Equally, by multiple impedance matching layer lamella pressings one, this is i.e. defined The impedance matching layer of invention；Core layer, impedance matching layer, reflecting layer pressing are integrally i.e. obtained the metamaterial flat of the present invention.

In the present embodiment, described first base material, the second base material are by ceramic material, macromolecular material, ferroelectric material, ferrum oxygen material Material or ferromagnetic material etc. prepare.Macromolecular material is available F4B composite, FR-4 composite etc..

Fig. 5 show the schematic diagram of the alabastrine metal micro structure of plane, and described alabastrine metal micro structure has It is mutually perpendicular to the first metal wire J1 and the second metal wire J2 divided equally, described first metal wire J1 and the length of the second metal wire J2 Identical, described first metal wire J1 two ends connect two the first metal branch F1, described first metal wire J1 having equal length Two ends are connected on the midpoint of two the first metal branch F1, and described second metal wire J2 two ends connection has two of equal length Second metal branch F2, described second metal wire J2 two ends are connected on the midpoint of two the second metal branch F2, and described first The length of metal branch F1 and the second metal branch F2 is equal.

Fig. 6 is a kind of derived structure of the alabastrine metal micro structure of the plane shown in Fig. 5.It divides at each first metal The two ends propping up F1 and each second metal branch F2 are respectively connected with identical 3rd metal branch F3, and the corresponding 3rd The midpoint of metal branch F3 end points with the first metal branch F1 and the second metal branch F2 respectively is connected.The rest may be inferred, this Bright can be to derive the metal micro structure of other form.

Fig. 7 is a kind of distressed structure of the alabastrine metal micro structure of the plane shown in Fig. 5, the micro-knot of metal of this kind of structure 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 equal It 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 arranging bending Portion towards with the kink relative position on the first metal wire and the second metal wire so that the metal micro structure shown in Fig. 7 All overlap with artwork to the figure of any direction 90-degree rotation around the axis being perpendicular to the first metal wire and the second metal wire intersection point. Furthermore it is also possible to there is other to deform, such as, the first metal wire J1 and the second metal wire J2 is respectively provided with multiple kink WZ.

In the present embodiment, described core layer 11 can be divided into multiple Meta Materials as shown in Figure 2 of array arrangement Cells D, each metamaterial unit D includes prebasal plate unit U, metacoxal plate unit V and is arranged on base board unit U, metacoxal plate unit V Between the first man-made microstructure 12, the length, width and height of usual metamaterial unit D no more than 1/5th wavelength, be preferably the most very One of wavelength, therefore, may determine that the size of metamaterial unit D according to the operating frequency of antenna.Fig. 2 is the technique of painting of perspective, with Represent the position in metamaterial unit D of the first man-made microstructure, as in figure 2 it is shown, described first man-made microstructure is sandwiched in substrate Between unit U, metacoxal plate unit V, its surface, place SR represents.

Known refractive indexWherein μ is relative permeability, and ε is relative dielectric constant, μ Yu ε is collectively referred to as electromagnetism ginseng Number.During it is demonstrated experimentally that electromagnetic wave is by refractive index dielectric material heterogeneous, can be to the big direction deviation of refractive index.Relatively In the case of pcrmeability is certain (being generally near 1), refractive index is the most relevant with dielectric constant, in the case of the first base material is selected, Utilize and only the first man-made microstructure of electric field response can be realized the arbitrary value of metamaterial unit refractive index (in certain limit In), under this center of antenna frequency, utilize simulation software, such as CST, MATLAB, COMSOL etc., obtain a certain spy by emulation The dielectric constant of the man-made microstructure (the alabastrine metal micro structure of plane as shown in Figure 5) of shaped is along with topology The situation of refractive index variable change, can list data one to one, and the specific refractive index that can design us needs divides The core layer 11 of cloth, in like manner can obtain the index distribution of impedance matching layer lamella.

In the present embodiment, the structure design of core layer can be passed through Computer Simulation (CST emulation) and obtain, the most such as Under:

(1) the attachment base material (the first base material) of the first metal micro structure is determined.Such as dielectric constant is the medium base of 2.25 Plate, the material of medium substrate can be FR-4, F4b or PS.

(2) size of metamaterial unit is determined.The size of the size of metamaterial unit is obtained by the mid frequency of antenna, profit Obtain its wavelength by frequency, then take a numerical value less than 1/5th of wavelength length CD as metamaterial unit D with wide Degree KD.Such as corresponding to the center of antenna frequency of 11.95G, described metamaterial unit D is that long CD as shown in Figure 2 is equal with wide KD For the square platelet that 2.8mm, thickness HD are 0.543mm.

(3) material and the topological structure of metal micro structure are determined.In the present invention, the material of metal micro structure is copper, metal The topological structure of micro structure is the alabastrine metal micro structure of the plane shown in Fig. 5, and its live width W is the most consistent；Topology herein Structure, refers to the basic configuration that topology develops.

(4) the topology parameter of metal micro structure is determined.As it is shown in figure 5, in the present invention, the alabastrine metal of plane is micro- The topology parameter of structure includes live width W of metal micro structure, length a of the first metal wire J1, the first metal branch F1's Length b.

(5) the differentiation restrictive condition of the topology of metal micro structure is determined.In the present invention, the topological shape of metal micro structure The differentiation restrictive condition of shape has, and minimum spacing WL between metal micro structure is (i.e. as it is shown in figure 5, metal micro structure and Meta Materials The long limit of unit or the distance of broadside are WL/2), live width W of metal micro structure, the size of metamaterial unit；Due to processing technique Limiting, WL is more than or equal to 0.1mm, and equally, live width W is also intended to more than or equal to 0.1mm.For the first time during emulation, WL can take 0.1mm, W can take 0.3mm, and the size of metamaterial unit is long and a width of 2.8mm, and thickness is 0.543mm, now the micro-knot of metal The topology parameter of structure only has two variablees of a and b.The topology of metal micro structure is by the differentiation as shown in Fig. 7 to Fig. 8 Mode, corresponding to a certain characteristic frequency (such as 11.95GHZ), can obtain a continuous print variations in refractive index scope.

Specifically, the differentiation of the topology of described metal micro structure includes that two stages, (it is basic that topology develops It is shaped as the metal micro structure shown in Fig. 5):

First stage: according to developing restrictive condition, in the case of the holding of b value is constant, a value is changed to from minima Big value, the metal micro structure in this evolution process is " ten " font when minima (a take except).In the present embodiment, the minimum of a Value is 0.3mm (live width W), and the maximum of a is (CD-WL).Therefore, in the first phase, the topology of metal micro structure Differentiation as shown in Figure 8, i.e. from the square JX1 that the length of side is W, be gradually evolved into maximum " ten " font topology JD1.? In first stage, along with the differentiation of the topology of metal micro structure, the refractive index of corresponding metamaterial unit increases continuously Greatly (respective antenna one characteristic frequency).

Second stage: according to developing restrictive condition, when a increases to maximum, a keeps constant；Now, by b from minimum Value increases continuously maximum, and the metal micro structure in this evolution process is plane flakes.In the present embodiment, the minimum of b It is (CD-WL-2W) that value is the maximum of 0.3mm, b.Therefore, in second stage, drilling of the topology of metal micro structure Become as it is shown in figure 9, i.e. from maximum " ten " font topology JD1, be gradually evolved into the plane alabastrine topology shape of maximum Shape JD2, maximum alabastrine topology JD2 of plane herein refers to, the first metal branch J1 and the second metal branch J2 Length b can not extend again, otherwise generation is intersected by the first metal branch and the second metal branch.In second stage, Along with the differentiation of the topology of metal micro structure, the refractive index of corresponding metamaterial unit increases (respective antenna continuously One characteristic frequency).

If the variations in refractive index scope being obtained metamaterial unit by above-mentioned differentiation meets design needs (i.e. this change model Enclose and contain n_min-n_maxScope).If the variations in refractive index scope that above-mentioned differentiation obtains metamaterial unit is unsatisfactory for design need , such as maximum is the least, then variation WL and W, emulates again, until obtaining the variations in refractive index scope that we need.

According to formula (1) to (4), a series of metamaterial unit emulation obtained is arranged according to the refractive index of its correspondence After (actually multiple first man-made microstructure of different topology shape arrangement on the first base material), can obtain this The core layer of invention.

In like manner, the impedance matching layer lamella of the present invention can be obtained according to formula (5)-(6).

As shown in Figure 10, in the another kind of embodiment of the present invention, described metamaterial flat 100 does not have impedance matching layer, Its equivalent thickness D equal to the twice of core layer thickness, other identical with the above embodiments.

Above in conjunction with accompanying drawing, embodiments of the invention are described, but the invention is not limited in above-mentioned concrete Embodiment, above-mentioned detailed description of the invention is only schematic rather than restrictive, those of ordinary skill in the art Under the enlightenment of the present invention, in the case of without departing from present inventive concept and scope of the claimed protection, it may also be made that a lot Form, within these belong to the protection of the present invention.

Claims (10)

1. an antenna for satellite communication in motion, it is characterised in that described antenna for satellite communication in motion includes in funnelform metamaterial structure is described super Material structure is formed by four identical trapezoidal metamaterial flat assembly, the corresponding feed of each metamaterial flat, often One metamaterial flat includes core layer and is arranged on the reflecting layer of core layer one side surface, and described core layer includes a core layer Lamella or multiple identical core layer, each core layer includes the first base material of lamellar and is arranged on the first base Multiple first man-made microstructure on material, the index distribution of described core layer meets equation below:

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

Vseg=s+ λ × NUMseg；

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

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

Wherein, n (r) represents that in core layer, radius is the refractive index value at r, and the index distribution center of circle of core layer is i.e. For feed equivalent point in the projection of metamaterial flat outer surface place plane, the described center of circle is positioned at metamaterial flat lower edge Lower section and the lower edge sy apart with metamaterial flat；

S is the feed equivalent point vertical dimension to metamaterial flat, and wherein feed equivalent point is that electromagnetic wave occurs to gather in feed Burnt point；

n_maxRepresent the maximum of the refractive index of core layer；

n_minRepresent the minima of the refractive index of core layer；

λ represents the wavelength of the electromagnetic wave that frequency is center of antenna frequency；

Floor represents and rounds downwards.

Antenna for satellite communication in motion the most according to claim 1, it is characterised in that described first base material include lamellar first before base Plate and the first metacoxal plate, the plurality of first man-made microstructure is folded between the first prebasal plate and the first metacoxal plate, described core The thickness of central layer lamella is 0.21-2.5mm, and wherein, the thickness of the first prebasal plate is 0.1-1mm, and the thickness of the first metacoxal plate is 0.1-1mm, the thickness of multiple first man-made microstructure is 0.01-0.5mm.

Antenna for satellite communication in motion the most according to claim 2, it is characterised in that the thickness of described core layer is 0.543mm, Wherein, the thickness of the first prebasal plate and the first metacoxal plate is 0.254mm, and the thickness of multiple first man-made microstructure is 0.035mm。

Antenna for satellite communication in motion the most according to claim 1, it is characterised in that each metamaterial flat also includes being arranged on core The impedance matching layer on layer opposite side surface, described impedance matching layer includes that an impedance matching layer lamella or multiple thickness are identical Impedance matching layer lamella, described impedance matching layer lamella include the second base material of lamellar and be arranged on the second base material multiple Second man-made microstructure, the index distribution of the one or more impedance matching layer lamella meets equation below:

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

Wherein, n_iR () represents that on impedance matching layer lamella, radius is the refractive index value at r, the refractive index of impedance matching layer lamella is divided The cloth center of circle is the projection in corresponding impedance matching layer lamella outer surface place plane of the feed equivalent point；

Wherein, i represents the numbering of impedance matching layer lamella, near the numbered m of impedance matching layer lamella of feed, by feed to Core layer direction, numbering is sequentially reduced, near numbered the 1 of the impedance matching layer lamella of core layer；

Above-mentioned n_minMinima for the refractive index of core layer.

Antenna for satellite communication in motion the most according to claim 1, it is characterised in that each metamaterial flat also includes being arranged on core The impedance matching layer on layer opposite side surface, described impedance matching layer includes that an impedance matching layer lamella or multiple thickness are identical Impedance matching layer lamella, described impedance matching layer lamella include the second base material of lamellar and be arranged on the second base material multiple Second man-made microstructure, described each impedance matching layer lamella has single refractive index, the one or more impedance matching The refractive index of synusia layer meets below equation:

$n\left(i\right)={\left(\right(n_{max}+n_{\min })/2)}^{\frac{i}{m}};$

Wherein, m represents total number of plies of impedance matching layer, and i represents the numbering of impedance matching layer lamella, wherein, near core layer The numbered m of impedance matching layer lamella.

6. according to the antenna for satellite communication in motion described in claim 3 or 4 or 5, it is characterised in that described second base material includes the of lamellar Two prebasal plates and the second metacoxal plate, the plurality of second man-made microstructure is folded between the second prebasal plate and the second metacoxal plate, The thickness of described impedance matching layer lamella is 0.21-2.5mm, and wherein, the thickness of the second prebasal plate is 0.1-1mm, base after second The thickness of plate is 0.1-1mm, and the thickness of multiple second man-made microstructure is 0.01-0.5mm.

Antenna for satellite communication in motion the most according to claim 1, it is characterised in that described first man-made microstructure and second artificial micro- Structure is all for the metal micro structure being made up of copper cash or silver wire, and described metal micro structure is by etching, electroplate, boring quarter, photoetching, electricity The method that son is carved or ion is carved is respectively attached on the first base material and the second base material.

Antenna for satellite communication in motion the most according to claim 7, it is characterised in that described metal micro structure is plane flakes, institute State metal micro structure and there is the first metal wire and the second metal wire being mutually perpendicular to divide equally, described first metal wire and the second metal The length of line is identical, and described first metal wire two ends connect two the first metal branch having equal length, described first metal Line two ends are connected on the midpoint of two the first metal branch, and described second metal wire two ends connect two of equal length the Two metal branch, described second metal wire two ends are connected on the midpoint of two the second metal branch, described first metal branch Equal with the length of the second metal branch.

Antenna for satellite communication in motion the most according to claim 8, it is characterised in that the alabastrine metal micro structure of described plane every The two ends of individual first metal branch and each second metal branch are also associated with identical 3rd metal branch, and corresponding The midpoint of three metal branch end points with the first metal branch and the second metal branch respectively is connected.

Antenna for satellite communication in motion the most according to claim 8, it is characterised in that the alabastrine metal micro structure of described plane First metal wire and the second metal wire are provided with two kinks, and the alabastrine metal micro structure of described plane is around the first metal The intersection point of line and the second metal wire in plane residing for metal micro structure to the figure of any direction 90-degree rotation all with artwork weight Close.