CN102683819A - Metamaterial satellite antenna and satellite receiving system - Google Patents

Abstract

The invention discloses a metamaterial satellite antenna, which includes a signal receiver and a metamaterial flat plate, the metamaterial flat plate includes a core layer and a reflection plate arranged on the back surface of the core layer, the core layer includes a base plate and a reflective plate attached to the front of the base plate There are multiple artificial microstructures on the surface, and the reflector is attached to the rear surface of the substrate, so that the electromagnetic waves emitted by the satellite are converged in the signal receiver after being responded by the metamaterial plate, and the traditional plate is replaced by a sheet-shaped metamaterial plate The parabolic antenna is easier to manufacture and process, and the cost is lower. In addition, the overall thickness of the metamaterial plate designed according to this method is at the millimeter level, which is quite light and thin. The invention also provides a satellite receiving system.

Description

A metamaterial satellite antenna and satellite receiving system

technical field

The invention relates to the field of communication, more specifically, to a supermaterial satellite antenna and a satellite receiving system.

Background technique

Existing satellite antennas, such as satellite TV receiving antennas, usually use traditional reflector antennas, which are usually parabolic antennas, and the parabolic antenna is responsible for reflecting the received signal to the signal receiver located at the focal point.

When receiving the electromagnetic wave signal from the satellite, the parallel electromagnetic wave (because the distance between the satellite and the earth is quite far, the electromagnetic wave emitted by it can be considered as a plane wave when it reaches the ground) is reflected by the parabolic antenna and converges on the signal receiver.

However, it is difficult to process the curved surface of the reflective surface of the parabolic antenna, and the precision requirement is also high, so the manufacturing is troublesome and the cost is high.

Contents of the invention

The technical problem to be solved by the present invention is to provide a metamaterial satellite antenna with simple processing and low manufacturing cost, aiming at the defects of difficult processing and high cost of existing satellite antennas.

The technical solution adopted by the present invention to solve the technical problem is: a metamaterial satellite antenna, the metamaterial satellite antenna includes a signal receiver and a metamaterial flat panel, and the metamaterial flat panel includes a single-layer core layer and is arranged on the core layer. The reflector on the rear surface, the core layer includes a substrate and a plurality of artificial microstructures attached to the front surface of the substrate, the reflector is attached to the rear surface of the substrate, and the refractive index distribution of the single-layer core layer satisfies the following formula :

Wherein, n(r) represents the refractive index value at a radius of r on the core layer, and the center of the refractive index distribution circle of the core layer is the projection of the equivalent point of the signal receiver on the plane where the core layer is located;

s is the vertical distance from the equivalent point of the signal receiver to the core layer;

n _max represents the maximum value of the refractive index of the core layer;

n _min represents the minimum value of the refractive index of the core layer;

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

floor represents rounding down.

Further, the metamaterial satellite antenna also includes a protective film covering the artificial microstructure.

Further, the protective film is PS plastic, PET plastic or HIPS plastic, and the thickness of the protective film is 0.1-2mm.

Further, the thickness of the core layer is 0.11-2.5 mm, wherein the thickness of the substrate is 0.1-2 mm, and the thickness of the plurality of artificial microstructures is 0.01-0.5 mm.

Further, the thickness of the core layer is 1.036mm, wherein the thickness of the substrate is 1.018mm, and the thickness of the plurality of artificial microstructures is 0.018mm.

Further, the artificial microstructure is a metal microstructure composed of copper wire or silver wire, and the metal microstructure is attached to the substrate by etching, electroplating, drilling, photolithography, electronic etching or ion etching .

Further, the metal microstructure is in the shape of a plane snowflake, the metal microstructure has a first metal line and a second metal line that are perpendicular to each other, and the length of the first metal line is the same as that of the second metal line. Two first metal branches of the same length are connected at both ends of the first metal line, the two ends of the first metal line are connected at the midpoint of the two first metal branches, and the two ends of the second metal line are connected with the same Two second metal branches of the same length, the two ends of the second metal wire are connected to the midpoint of the two second metal branches, and the length of the first metal branch is equal to that of the second metal branch.

Further, the two ends of each first metal branch and each second metal branch of the planar snowflake-shaped metal microstructure are also connected to identical third metal branches, and the midpoints of the corresponding third metal branches are respectively It is connected with the terminals of the first metal branch and the second metal branch.

Further, the first metal wire and the second metal wire of the planar snowflake-shaped metal microstructure are both provided with two bending parts, and the planar snowflake-shaped metal microstructure wraps around the first metal wire and the second metal wire The graphs of the intersection points rotated 90 degrees in any direction in the plane where the metal microstructure is located coincide with the original graph.

According to the metamaterial satellite antenna of the present invention, by precisely designing the refractive index distribution of the core layer, the electromagnetic waves emitted from the satellite are converged at the signal receiver after being responded by the flat metamaterial plate; Instead of the traditional parabolic antenna, the manufacturing process is easier and the cost is lower. In addition, the overall thickness of the metamaterial plate designed according to this method is at the millimeter level, which is quite light and thin.

The present invention also provides a satellite receiving system, including a satellite antenna and a satellite receiver connected to a signal receiver, and the satellite antenna is the above-mentioned metamaterial satellite antenna.

Description of drawings

Fig. 1 is the structural representation of metamaterial satellite antenna of the present invention;

Fig. 2 is the structural representation of the core layer of the present invention;

Fig. 3 is a schematic diagram of one of the metamaterial units in the core layer of the present invention;

Fig. 4 is the schematic diagram of the metal microstructure of plane snowflake shape of the present invention;

Fig. 5 is a kind of derivation structure of the metal microstructure of plane snowflake shown in Fig. 4;

FIG. 6 is a deformed structure of the planar snowflake-shaped metal microstructure shown in FIG. 4 .

Figure 7 is the first stage of the evolution of the topological shape of the planar snowflake-like metal microstructure;

Figure 8 is the second stage of the evolution of the topological shape of the planar snowflake-like metal microstructure;

Fig. 9 is a schematic structural diagram of a satellite receiving system according to an embodiment of the present invention;

FIG. 10 is another perspective view of FIG. 9 .

Detailed ways

As shown in Figures 1 to 3, the metamaterial satellite antenna according to the present invention includes a metamaterial flat panel 100 arranged behind the signal receiver 1, and the metamaterial flat panel 100 includes a core layer 10 and a reflector disposed on the rear surface of the core layer. Plate 200, the core layer 10 includes a substrate 13 and a plurality of artificial microstructures 12 attached to the front surface of the substrate 13, the reflector 200 is attached to the rear surface of the substrate 13, the central axis Z1 of the signal receiver 1 is connected to the metamaterial The central axis Z2 of the plane of the flat panel 100 has a certain angle θ, that is, the angle between the central axis Z1 and the straight line Z3 in Figure 1 (Z3 is a parallel line to Z1), and the signal receiver 1 is not on the central axis Z2 of the metamaterial flat plane On, the offset feed of the antenna is realized. In addition, in the present invention, the reflector is a metal reflector with a smooth surface, such as a polished copper plate, aluminum plate or iron plate, etc., or a PEC (Perfect Electric Conductor) reflector, and of course it can be a metal coating. In the present invention, any longitudinal section of the metamaterial slab 100 has the same shape and area, and the longitudinal section here refers to the section perpendicular to the central axis of the metamaterial slab. The longitudinal section of the metamaterial flat plate is square, circular or elliptical. Preferably, the longitudinal section of the metamaterial flat plate is square, so that the supermaterial flat plate obtained is easy to process, such as a square of 300X300mm or 450X450mm, and a rectangle of 450X475mm . The circle can be a circle with a diameter of 250, 300 or 450mm.

In the present invention, the refractive index distribution of the core layer sheet satisfies the following formula:

Among them, n(r) represents the refractive index value at the radius of r on the core layer; the center of the refractive index distribution circle O1 of the core layer is the projection of the equivalent point X of the signal receiver on the plane where the outer surface of the core layer is located, so The distance between the center of circle O1 and the lower edge of the core layer is sy (when sy is positive, it means that the center of circle O1 is outside the core layer sheet; when sy is negative, it means that the center of circle O1 is on the core layer sheet), more preferably Ground, when the core layer sheet is a square, the line between the center of circle O1 and the midpoint of the lower edge of the core layer is perpendicular to the lower edge of the core layer; when the core layer is circular, the center of circle O1 and The connecting line of the lower edge apex of the core layer sheet is on the radius of the circle; when the core layer sheet is elliptical, the center of circle O1 and the lower edge apex of the core layer sheet are on the long axis of the ellipse.

s is the vertical distance from the equivalent point X of the signal receiver 1 to the metamaterial plane reflector; here the equivalent point X of the signal receiver 1 is actually the feed point of the antenna (the point where the electromagnetic wave focuses in the signal receiver 1 ); when the angle θ between the central axis Z1 of the signal receiver 1 and the central axis Z2 of the flat metamaterial 3 changes, s will also change slightly.

The relative position of the equivalent point X of the signal receiver and the flat metamaterial is jointly determined by s, θ and sy. Usually, the equivalent point X of the signal receiver 1 is selected on the central axis Z1 of the signal receiver, and the equivalent point X of the signal receiver 1 is equivalent to The position of the point X is related to the aperture of the signal receiver 1, for example, it can be the position ds away from the center point Y of the aperture of the signal receiver 1 (ds is the distance from point X to point Y in Fig. 1), as an embodiment , the said ds is equal to 5mm. In fact, in the design, ds is related to θ. With the difference of θ, the position of the equivalent point X of the signal receiver 1 is also different, that is, the ds is different, but the signal receiver 1 is equivalent The point is still on the central axis Z1 of the signal receiver 1 .

n _max represents the maximum value of the refractive index of the core layer sheet;

n _min represents the minimum value of the refractive index of the core layer sheet;

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

D is the equivalent thickness of the core layer.

大于等于0小于1时，NUMseg取0，当

大于等于1小于2时，NUMseg取1，依此类推。floor represents rounding down, for example, when

When greater than or equal to 0 and less than 1, NUMseg takes 0, when

When greater than or equal to 1 and less than 2, NUMseg takes 1, and so on.

As shown in Figure 2, in order to clearly show the relationship between the substrate 13 and the artificial microstructure 12 in the core layer, the layer where the artificial microstructure 12 is located is represented by hatching, which we call the artificial microstructure layer 120, the artificial microstructure layer 120 That is, it consists of all the artificial microstructures attached to the substrate.

The metamaterial slab determined by the formula (1) to the formula (4) can make the plane wave received by the antenna converge at the equivalent point X of the signal receiver after passing through the metamaterial slab. Of course, when receiving satellite antenna signals, the normal direction of the flat metamaterial faces the satellite to be received. As for how to make the normal direction of the flat metamaterial face the satellite to receive the signal, it involves traditional satellite antenna debugging. The problem, that is, the adjustment of the azimuth and elevation angles of the antenna, is common knowledge and will not be repeated here.

In addition, in the present invention, preferably, the metamaterial satellite antenna further includes a protective film covering the artificial microstructure 12, the protective film completely covers the artificial microstructure layer 120, so that the artificial microstructure can be protected, and at the same time, The mechanical properties of the metamaterial slab can be enhanced. In the present invention, the protective film may be PS plastic (polystyrene plastic), PET plastic (polyterephthalic acid plastic) or HIPS plastic (impact-resistant polystyrene).

In the present invention, the thickness of the protective film is 0.1-2 mm, and the specific thickness is determined in combination with wave-transmitting performance and mechanical performance, for example, it may be 1 mm.

In the present invention, preferably, the thickness of the core layer is 0.11-2.5mm, wherein the thickness of the substrate is 0.1-2mm, and the thickness of the plurality of artificial microstructures is 0.01-0.5mm, that is, the thickness of the artificial microstructure layer is 0.01-0.5mm. As a specific example, the thickness of the core layer is 1.036mm, the thickness of the substrate is 1.018mm, and the thickness of the plurality of artificial microstructures is 0.018mm.

When the metamaterial satellite antenna of the present invention is used as a transmitting antenna, that is, the signal receiver is used as a radiation source, the role of the metamaterial plate is to emit the plane wave sent by the signal receiver in the form of a plane wave after passing through the metamaterial plate.

When the metamaterial satellite antenna of the present invention is used as a receiving antenna, that is, the signal receiver is used as a wave collector, the effect of the metamaterial flat panel is to enable the plane wave (incident in the direction in Fig. 1) received by the antenna to pass through the metamaterial flat panel Convergence can occur at the signal receiver equivalent point X.

In the present invention, the artificial microstructure is a metal microstructure composed of copper wire or silver wire, and the metal microstructure is respectively attached to the on the substrate. Preferably, the artificial microstructure is a plurality of metal microstructures with different topological shapes evolved from the planar snowflake-shaped metal microstructure shown in FIG. 4 through topological shape evolution.

In the present invention, the core layer can be obtained by the following method, that is, copper is coated on the surface of any one of the substrates, and then a plurality of metal microstructures are obtained by etching (the shapes of the plurality of metal microstructures and their arrangement on the substrate are obtained in advance. obtained by computer simulation).

The metamaterial flat plate of the present invention is obtained by pressing the core layer and the reflection plate together.

In the present invention, the substrate is made of ceramic material, polymer material, ferroelectric material, ferrite material or ferromagnetic material. Polymer materials can be selected from F4B composite materials, FR-4 composite materials, PS (polystyrene) and so on.

4 is a schematic diagram of a plane snowflake-shaped metal microstructure, the snowflake-shaped metal microstructure has a first metal line J1 and a second metal line J2 that are perpendicular to each other, and the first metal line J1 and the second metal line J2 are perpendicular to each other. The lengths of the two metal wires J2 are the same, and the two ends of the first metal wire J1 are connected to two first metal branches F1 of the same length, and the two ends of the first metal wire J1 are connected to the center of the two first metal branches F1. In terms of point, the two ends of the second metal line J2 are connected to two second metal branches F2 of the same length, and the two ends of the second metal line J2 are connected to the midpoint of the two second metal branches F2. The lengths of the first metal branch F1 and the second metal branch F2 are equal.

FIG. 5 is a derivative structure of the planar snowflake-like metal microstructure shown in FIG. 4 . Both ends of each first metal branch F1 and each second metal branch F2 are connected to identical third metal branches F3, and the midpoints of the corresponding third metal branches F3 are respectively connected to the first metal branch F1. and the terminal of the second metal branch F2 are connected. By analogy, the present invention can also derive other forms of metal microstructures.

FIG. 6 is a deformed structure of the plane snowflake-shaped metal microstructure shown in FIG. Both the metal wire J1 and the second metal wire J2 are provided with two bending parts WZ, but the first metal wire J1 and the second metal wire J2 are still perpendicularly bisected. The relative position of the metal line and the second metal line makes the pattern of the metal microstructure shown in FIG. 7 rotated 90 degrees in any direction around the axis perpendicular to the intersection of the first metal line and the second metal line coincide with the original figure. In addition, other deformations are also possible, for example, the first metal line J1 and the second metal line J2 are both provided with a plurality of bent portions WZ.

In the present invention, the core layer 11 can be divided into a plurality of metamaterial units D arranged in an array as shown in FIG. 2 , each metamaterial unit D includes a substrate unit U and an artificial microstructure attached to the substrate unit U 12. Generally, the length, width, and height of the metamaterial unit D are not greater than one-fifth of the wavelength, preferably one-tenth of the wavelength. Therefore, the size of the metamaterial unit D can be determined according to the operating frequency of the antenna. As shown in FIG. 2 , the artificial microstructure is attached to the SR surface of the substrate unit U.

其中μ为相对磁导率，ε为相对介电常数，μ与ε合称为电磁参数。实验证明，电磁波通过折射率非均匀的介质材料时，会向折射率大的方向偏折。在相对磁导率一定的情况下(通常接近1)，折射率只与介电常数有关，在基板选定的情况下，利用只对电场响应的人造微结构可以实现超材料单元折射率的任意值(在一定范围内)，在该天线中心频率下，利用仿真软件，如CST、MATLAB、COMSOL等，通过仿真获得某一特定形状的人造微结构(如图4所示的平面雪花状的金属微结构)的介电常数随着拓扑形状的变化折射率变化的情况，即可列出一一对应的数据，即可设计出我们需要的特定折射率分布的核心层10。known refractive index

Among them, μ is the relative magnetic permeability, ε is the relative permittivity, and μ and ε are collectively called electromagnetic parameters. Experiments have proved that when electromagnetic waves pass through a dielectric material with a non-uniform refractive index, they will be deflected toward the direction with a large refractive index. In the case of a certain relative magnetic permeability (usually close to 1), the refractive index is only related to the dielectric constant. In the case of a selected substrate, the arbitrary refractive index of the metamaterial unit can be realized by using an artificial microstructure that only responds to the electric field. value (within a certain range), at the center frequency of the antenna, use simulation software, such as CST, MATLAB, COMSOL, etc., to obtain an artificial microstructure of a specific shape through simulation (the plane snowflake-like metal structure shown in Figure 4 The dielectric constant of the microstructure) changes with the change of the topological shape, and one-to-one corresponding data can be listed, and the core layer 10 with the specific refractive index distribution we need can be designed.

In the present invention, the structural design of core layer can be obtained by computer simulation (CST simulation), specifically as follows:

(1) Determine the attachment substrate of the metal microstructure. For example, a dielectric substrate with a dielectric constant of 2.7, the material of the dielectric substrate can be FR-4, F4b or PS.

(2) Determine the size of the metamaterial unit. The size of the metamaterial unit is obtained from the center frequency of the antenna, its wavelength is obtained by using the frequency, and a value less than one-fifth of the wavelength is taken as the length CD and width KD of the metamaterial unit D. For example, corresponding to the central frequency of 11.95G, the metamaterial unit D may be a small square plate with a length CD and a width KD of 2.8 mm and a thickness HD of 1.036 mm as shown in FIG. 2 .

(3) Determine the material and topology of the metal microstructure. In the present invention, the material of the metal microstructure is copper, and the topological structure of the metal microstructure is a plane snowflake-like metal microstructure shown in Figure 4, and its line width W is consistent everywhere; the topological structure here refers to the topological shape Evolved basic shapes.

(4) Determine the topological shape parameters of the metal microstructure. As shown in FIG. 4 , in the present invention, the topological shape parameters of the planar snowflake-shaped metal microstructure include the line width W of the metal microstructure, the length a of the first metal line J1 , and the length b of the first metal branch F1 .

(5) Determine the evolution constraints of the topological shape of the metal microstructure. In the present invention, the evolution restriction condition of the topological shape of the metal microstructure has, the minimum spacing WL between metal microstructures (that is, as shown in Figure 4, the distance between the metal microstructure and the long side or wide side of the metamaterial unit is WL /2), the line width W of the metal microstructure, and the size of the metamaterial unit; due to the limitation of the processing technology, WL is greater than or equal to 0.1mm, and similarly, the line width W must also be greater than or equal to 0.1mm. In the first simulation, WL can be 0.1mm, W can be 0.3mm, the size of the metamaterial unit is 2.8mm in length and width, and 1.018mm in thickness. At this time, the topological shape parameters of the metal microstructure are only a and b. variables. The topological shape of the metal microstructure corresponds to a specific frequency (for example, 11.95GHZ) through the evolution shown in Fig. 7 to Fig. 8, and a continuous range of refractive index variation can be obtained.

Specifically, the evolution of the topological shape of the metal microstructure includes two stages (the basic shape of the topological shape evolution is the metal microstructure shown in Figure 4):

The first stage: According to the evolution constraints, under the condition that the value of b remains unchanged, the value of a is changed from the minimum value to the maximum value. except). In this embodiment, the minimum value of a is 0.3 mm (line width W), and the maximum value of a is (CD-WL). Therefore, in the first stage, the evolution of the topological shape of the metal microstructure is shown in Figure 7, that is, from a square JX1 with side length W to the largest topological shape JD1 of a "ten". In the first stage, as the topological shape of the metal microstructure evolves, the refractive index of the corresponding metamaterial unit increases continuously (corresponding to a specific frequency of the antenna).

The second stage: According to the evolution constraints, when a increases to the maximum value, a remains unchanged; at this time, b is continuously increased from the minimum value to the maximum value, and the metal microstructure in this evolution process is planar snowflake shape. In this embodiment, the minimum value of b is 0.3 mm, and the maximum value of b is (CD-WL-2W). Therefore, in the second stage, the evolution of the topological shape of the metal microstructure is shown in Figure 8, that is, from the largest "ten" topological shape JD1 to the largest planar snowflake-like topological shape JD2, where The largest planar snowflake topological shape JD2 means that the length b of the first metal branch J1 and the second metal branch J2 can no longer be extended, otherwise the first metal branch and the second metal branch will intersect. In the second stage, as the topological shape of the metal microstructure evolves, the refractive index of the corresponding metamaterial unit increases continuously (corresponding to a specific frequency of the antenna).

Through the above evolution, if the refractive index variation range of the metamaterial unit includes the continuous variation range from n _min to n _max , it will meet the design requirements. If the range of refractive index variation of the metamaterial unit obtained from the above evolution does not meet the design requirements, for example, the maximum value is too small or the minimum value is too large, then change WL and W, and re-simulate until the desired range of refractive index variation is obtained.

According to formulas (1) to (4), after a series of metamaterial units obtained by simulation are arranged according to their corresponding refractive indices (in fact, it is the arrangement of multiple artificial microstructures with different topological shapes on the substrate), That is, the core layer of the present invention can be obtained.

The metamaterial satellite antenna described above can be a satellite TV receiving antenna, a satellite communication antenna (two-way communication), a microwave antenna or a radar antenna according to the working frequency band and the use environment. Of course, the metamaterial satellite antenna of the present invention can also replace various other reflector antennas.

In addition, as shown in Figure 9 and Figure 10, the present invention also provides a satellite receiving system, including a satellite antenna, a signal receiver 1, and a satellite receiver (not shown) connected to the signal receiver 1 , the satellite antenna is the above-mentioned metamaterial satellite antenna of the present invention. In the present invention, the signal receiver 1 is a traditional corrugated horn. The satellite receiver, for example, can adopt the N6188 of Coship Electronics, which is used to receive the satellite TV signal of Zhongxing No. 9, which is an existing technology and will not be described here.

In addition, in the present invention, as shown in FIG. 9 and FIG. 10 , the satellite receiving system also includes an antenna mounting base, and the antenna mounting base includes a signal receiver pole 2, a frame 3 for fixing a metamaterial flat panel 100, and an antenna elevation adjustment device One end of the signal receiver pole 2 is fixedly connected to the signal receiver 1, and the other end is fixed on the frame 3, and the antenna elevation adjustment device includes a base 4 hinged to the signal receiver pole 2 through the first hinge JL1 And a support mechanism for fixing the metamaterial flat plate 100 at a specific elevation angle, the support mechanism includes a hollow rod 5 hinged to the base 4 through the second hinge JL2, an inner rod 6 placed in the hollow rod 5 and a locking inner rod 6 Position locking device, the outer end of the inner rod 6 is fixedly connected with the signal receiver bracket 2 through the connecting plate 7, the inner rod 6 can slide relative to the hollow rod 5 when the locking device is in an unlocked state, the first A hinge JL1 and a second hinge JL2 are respectively arranged at two opposite positions of the base 4 .

In this embodiment, the base 4 is a circular frame structure, and the line connecting the first hinge JL1 and the second hinge JL2 passes through the center of the circular frame structure. The base is also provided with a plurality of fixing plates GD, which are used to fix the antenna on the ground as a whole after the azimuth and elevation angles of the antenna are adjusted.

In this embodiment, the locking device includes a threaded hole (not shown in the figure) provided on the hollow rod 5 and an adjusting bolt 8 matched with the threaded hole. 6 to lock the position of the inner rod 6, because the inner rod 6 is connected to the frame 3 through the connecting plate 7, therefore, the pitch adjustment of the metamaterial panel 100 is actually realized, that is, the adjustment of the elevation angle of the antenna.

In this embodiment, the frame 3 includes an upper frame 31, a middle frame 32, and a lower frame 33, and the upper frame 31, the middle frame 32, and the lower frame 33 are respectively fixed on the back of the reflector 100 by bolts LS1. The frame 31 , the middle frame 32 and the lower frame 33 are fixed on the signal receiver pole 2 through three fixing brackets 9 , and the connecting plate 7 is fixedly connected with the signal receiver pole 2 near the middle frame 32 .

The elevation angle adjustment of the metamaterial flat panel 100 is specifically as follows:

First, rotate the adjusting bolt 8 outward (that is, release the position lock of the inner rod);

Slide the inner rod (extend or retract). At this time, the reflector 100 will rotate around the first hinge JL1. When it reaches the proper position, turn the adjusting bolt 8 inward again (that is, lock the position of the inner rod). The proper position here is It means that the elevation angle of the metamaterial slab is just equal to the elevation angle of the satellite to be communicated at the geographic location, that is, the elevation angle adjustment of the metamaterial slab is achieved, that is, the elevation angle adjustment of the antenna is realized.

Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementations, and the above-mentioned specific implementations are only illustrative, rather than restrictive, and those of ordinary skill in the art will Under the enlightenment of the present invention, many forms can also be made without departing from the gist of the present invention and the protection scope of the claims, and these all belong to the protection of the present invention.

Claims (10)

1. ultra material satellite antenna; It is characterized in that; Said ultra material satellite antenna comprises signal receiver and ultra material flat board, the reflecting plate on surface after said ultra material flat board comprises the individual layer core layer and is arranged on core layer, and said core layer comprises that substrate reaches a plurality of artificial micro-structural attached to the substrate front surface; Surface attachment has said reflecting plate behind the said substrate, and the refraction index profile of said individual layer core layer satisfies following formula:

Wherein, radius is the refractive index value at r place on n (r) the expression core layer, and the refraction index profile center of circle of core layer is the projection of signal receiver equivalent point on plane, core layer place;

S is the vertical range of signal receiver equivalent point to core layer;

n _MaxThe maximum of the refractive index of expression core layer;

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

λ representes that frequency is the electromagnetic wavelength of center of antenna frequency;

Floor representes to round downwards.

2. ultra material satellite antenna according to claim 1 is characterized in that, said ultra material satellite antenna also comprises the diaphragm that covers on the artificial micro-structural.

3. ultra material satellite antenna according to claim 2 is characterized in that, said diaphragm is PS plastics, PET plastics or HIPS plastics, and the thickness of said diaphragm is 0.1-2mm.

4. ultra material satellite antenna according to claim 1 is characterized in that the thickness of said core layer is 0.11-2.5mm, and wherein, the thickness of substrate is 0.1-2mm, and the thickness of a plurality of artificial micro-structurals is 0.01-0.5mm.

5. ultra material satellite antenna according to claim 4 is characterized in that the thickness of said core layer is 1.036mm, and wherein, the thickness of substrate is 1.018mm, and the thickness of a plurality of artificial micro-structurals is 0.018mm.

6. ultra material satellite antenna according to claim 1; It is characterized in that; The metal micro structure of said artificial micro-structural for constituting by copper cash or silver-colored line, said metal micro structure through etching, plating, brill quarter, photoetching, electronics is carved or the method at ion quarter attached on the said substrate.

7. ultra material satellite antenna according to claim 6; It is characterized in that; Said metal micro structure is the plane flakes; Said metal micro structure has first metal wire and second metal wire of vertically dividing equally each other, and said first metal wire is identical with the length of second metal wire, and the said first metal wire two ends are connected with two first metal branches of equal length; The said first metal wire two ends are connected on the mid point of two first metal branches; The said second metal wire two ends are connected with two second metal branches of equal length, and the said second metal wire two ends are connected on the mid point of two second metal branches, the equal in length of the said first metal branch and the second metal branch.

8. ultra material satellite antenna according to claim 7; It is characterized in that; Each the first metal branch of the alabastrine metal micro structure in said 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. ultra material satellite antenna according to claim 7; It is characterized in that; First metal wire of the alabastrine metal micro structure in said plane and second metal wire are provided with two kinks, and the alabastrine metal micro structure in said plane revolves the figure that turn 90 degrees to any direction with the intersection point of second metal wire around first metal wire and all overlaps with former figure in metal micro structure plane of living in.

10. satellite receiving system comprises satellite antenna, connects the DVB of signal receiver, it is characterized in that said satellite antenna is any described ultra material satellite antenna of claim 1 to 9.

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