CN102810768B - Metamaterial satellite antenna and satellite receiving system - Google Patents

Abstract

The invention provides a metamaterial satellite antenna which comprises a feed source and a metamaterial panel. The metamaterial panel comprises a core layer and a reflection surface arranged on the rear surface of the core layer. The reflection surface is a conductive polymer film made of conductive polymer material. The invention further relates to a satellite receiving system. The reflection surface is a conductive polymer film made of conductive polymer material, and accordingly weight of the metamaterial satellite antenna is lightened, and warping of the metamaterial satellite antenna is prevented.

Description

A kind of meta-material satellite antenna and satellite receiving system

[technical field]

The present invention relates to the communications field, more particularly, relate to a kind of meta-material satellite antenna and satellite receiving system.

[background technology]

Meta Materials is material electromagnetic wave being played to modulating action grown up nearly ten years.Meta Materials is generally be attached to by the metal micro structure of some to have on certain mechanics, electromagnetic substrate, and these micro-structurals with specific pattern and material can produce modulating action to the electromagnetic wave of the special frequency channel through its body.

Existing satellite antenna, such as satellite television receiving antenna, usually adopt traditional reflector antenna to be generally parabolic antenna, parabolic antenna is responsible for the signal reflex received to the signal receiver being positioned at focus place.

When receiving from the electromagnetic wave signal that satellite transmits, parallel electromagnetic wave is (because the distance of satellite and the earth is quite far away, its electromagnetic wave sent arrive ground time can think plane wave) reflected by parabolic antenna after, converge on signal receiver.

Reflective meta-material satellite antenna generally adopts metal covering as reflector, and when adopting metal covering as reflector, because metal covering is block of metal, and Meta Materials functional surfaces is discrete micro-structural, and two-layer shrinkage is inconsistent, the easy warpage of product.

Structural type macromolecule conducting material refers to macromolecular structure itself or after overdoping, has the macromolecular material of conducting function.Refer to macromolecular structure itself or there is the macromolecular material of conducting function after overdoping.Size according to conductivity can be divided into again semiconducting polymer, high-molecule metal and macromolecule superconductor.Electron-conducting polymer material and ionic conductive high molecular material can be divided into according to electrical conduction mechanism.The design feature of electron-conducting polymer material has line style or the large conjugated system of face type, heat or light effect under conducted electricity by the activation of conjugated pi electron, conductivity is generally in the scope of semiconductor.Adopt doping techniques that the electric conductivity of this kind of material can be made greatly to improve.As a small amount of iodine that adulterates in polyacetylene, conductivity can improve 12 orders of magnitude, becomes " high-molecule metal ".Polysulfur nitride after doping, can be transformed into macromolecule superconductor under ultralow temperature.Structural type macromolecule conducting material is for manufacturing experimently light plastic storage battery, solar cell, senser element, microwave absorbing material and trial-production semiconductor components and devices etc.

[summary of the invention]

Technical problem to be solved by this invention is: provide a kind of conductive polymer film that adopts to be the meta-material satellite antenna of reflecting surface, prevent the warpage of meta-material satellite antenna.

The technical solution adopted for the present invention to solve the technical problems is: a kind of meta-material satellite antenna, and described meta-material satellite antenna comprises feed and metamaterial flat, and described metamaterial flat comprises core layer and is arranged on the reflecting surface of core layer rear surface; Described reflecting surface is the conductive polymer film that conducting polymer composite is made.

Described conducting polymer composite comprises polypyrrole, polyphenylene sulfide, poly-phthalocyanine-like compound, polyparaphenylene, polyaniline or polythiophene.

Described core layer comprises substrate and is attached to multiple metal micro structures of substrate front surface.

Described reflecting surface is attached to the rear surface of described substrate.

Described meta-material satellite antenna also comprises the diaphragm covered on metal micro structure.

Described diaphragm is PS plastics, PET or HIPS plastic, and the thickness of described diaphragm is 0.1-2mm.

Described metal micro structure is the plane with certain geometrical shape or stereochemical structure that are made up of wire.

Described metal micro structure by etching, plating, bore quarters, photoetching, electronics carve or ion carve method adhere on the substrate.

A kind of satellite receiving system, comprise the satellite receiver of satellite antenna, connection signal receiver, described satellite antenna is above-mentioned meta-material satellite antenna.

Beneficial effect of the present invention is: what reflecting surface adopted is the conductive polymer film that conducting polymer composite is made, and not only alleviates the quality of meta-material satellite antenna, prevents the warpage of meta-material satellite antenna.

[accompanying drawing explanation]

Fig. 1 is the structural representation of meta-material satellite antenna of the present invention.

[embodiment]

In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.

As shown in Figure 1, meta-material satellite antenna according to the present invention comprises the metamaterial flat 100 being arranged on feed rear, metamaterial flat 100 comprises core layer 10 and is arranged on the reflecting surface 200 of core layer rear surface, core layer 10 comprises organic resin substrate and is attached to multiple metal micro structures of organic resin substrate front surface, and organic resin substrate rear surface is attached with reflecting surface; Also comprising the thickness covered on metal micro structure is the diaphragm of 0.1-2mm, and diaphragm is the plastics such as PS plastics, PET or HIPS plastic; Key point of the present invention is: reflecting surface is the conductive polymer film that conducting polymer composite is made, conducting polymer composite comprises polypyrrole, polyphenylene sulfide, poly-phthalocyanine-like compound, polyparaphenylene, polyaniline or polythiophene, not only alleviate the quality of meta-material satellite antenna, prevent the warpage of meta-material satellite antenna.

Metal micro structure is the plane with certain geometrical shape or stereochemical structure that are made up of wire, and the method that metal micro structure can be carved by etching, electroplating, bore quarter, photoetching, electronics quarter or ion is adhered on the substrate.

For polypyrrole, the preparation method of Conductive Polypyrrole Film is as follows:

Pyrrole monomer solution and liquor ferri trichloridi are placed in reaction vessel respectively, one side is attached with substrate immersion rear taking-up in coupling agent of metal micro structure, the another side soaking this substrate of coupling agent is sprayed pyrrole monomer solution 2 ~ 5 minutes continuously, spray liquor ferri trichloridi again after dry 30 ~ 60 seconds in atmosphere and carry out chemical polymerization, take out from reaction vessel after about 4 ~ 8 minutes, substrate can deposit thin film layer, i.e. Conductive Polypyrrole Film, the print washed with de-ionized water of finally will take out, use washes of absolute alcohol again, then dry.

For polyacetylene, the preparation method of conduction polyacetylene film is as follows:

Ethane monomer solution and iodine solution are placed in reaction vessel respectively, one side is attached with substrate immersion rear taking-up in coupling agent of metal micro structure, the another side soaking this substrate of coupling agent is sprayed ethane monomer solution 3 ~ 7 minutes continuously, spray iodine solution again after dry 20 ~ 40 seconds in atmosphere and carry out chemical polymerization, take out from reaction vessel after about 4 ~ 10 minutes, substrate can deposit thin film layer, i.e. conduction polyacetylene film, the print washed with de-ionized water of finally will take out, use washes of absolute alcohol again, then dry.

For polyaniline, the preparation method of conduction polyacetylene film is as follows:

Aniline monomer solution and hydrogenperoxide steam generator are placed in reaction vessel respectively, one side is attached with substrate immersion rear taking-up in coupling agent of metal micro structure, the another side soaking this substrate of coupling agent is sprayed aniline monomer solution 5 ~ 7 minutes continuously, after dry 40 ~ 60 seconds, spray coated hydrogen peroxide solution carries out chemical polymerization more in atmosphere, take out from reaction vessel after about 5 ~ 10 minutes, substrate can deposit thin film layer, i.e. conductive polyaniline film, the print washed with de-ionized water of finally will take out, use washes of absolute alcohol again, then dry.

Feed is traditional corrugated horn, and this difference of polarization mode according to the TV signal of satellite has different selections, and such as No. 9, culminant star, the existing left-hand circular polarization of its TV signal has right-handed circular polarization again, and therefore feed should adopt the corrugated horn of double-circle polarization.The arbitrary longitudinal section of metamaterial flat 100 is of similar shape and area, and longitudinal section herein refers to section vertical with the axis of metamaterial flat in metamaterial flat.The longitudinal section of metamaterial flat is square, circular or oval, and preferably, the longitudinal section of metamaterial flat is square, and the metamaterial flat obtained so is easily processed, the square of such as 300 × 300mm or 450 × 450mm, the rectangle of 450 × 475mm.The circle of circle can be diameter be 250,300 or 450mm.

The refraction index profile of core layer meets following formula:

$n(x,y,0)=n_{\max }-\frac{\mathrm{dis}-v_{\mathrm{segment}}}{\stackrel{\‾}{D}}---\left(1\right);$

v _segment＝ss+λ*num _segment(2)；

${\mathrm{num}}_{\mathrm{segment}}=\mathrm{floor}\left(\frac{\mathrm{dis}-\mathrm{ss}}{\mathrm{\λ}}\right)---\left(3\right);$

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

dis＝d ₁+d ₂(5)；

$d_1=\sqrt{x^2+{(y-y_{\mathrm{source}})}^2+z_{\mathrm{source}}^2}---\left(6\right);$

d ₂＝sinγ*(L/2-y) (7)；

ss＝sinγ*(L/2-y _virtual)-cosγ*z _virtual(8)；

Above formula sets up coordinate system in metamaterial flat, wherein metamaterial flat central point is the origin of coordinates (0,0,0), the central point of the subpoint of satellite on described vertical wall, metamaterial flat and the subpoint three point on a straight line of feed on described vertical wall, the conllinear of described 3 is y-axis, and is just towards the direction of satellite on described vertical wall, vertical described metamaterial flat is z-axis, and is just outward towards wall surface;

Wherein, n (x, y, 0) represents the refractive index value of any point in core layer;

L represent core layer by coordinate surface yoz the effective length of cutting;

N _maxrepresent the maximum of the refractive index of core layer;

N _minrepresent the minimum value of the refractive index of core layer;

λ represents the electromagnetic wavelength that satellite tv antenna receives;

γ represents that the electromagnetic wave that sends from particular satellite is when metamaterial flat surface is incident and angle formed by metamaterial flat normal;

Floor represents and rounds downwards;

(x _source, y _source, z _source) represent the coordinate of feed equivalent point;

(x _virtual, y _virtual, z _virtual) represent the coordinate of feed equivalent point relative to the symmetric points of coordinate surface xoy.

The refraction index profile of core layer also can meet following formula:

$n(x,y)=n_{\max }-\frac{\mathrm{dis}-v_{\mathrm{segment}}}{\stackrel{\‾}{D}}---\left(1\right);$

v _segment＝ss+λ*num _segment(2)；

${\mathrm{num}}_{\mathrm{segment}}=\mathrm{floor}\left(\frac{\mathrm{dis}-\mathrm{ss}}{\mathrm{\λ}}\right)---\left(3\right);$

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

dis＝d ₁+d ₂(5)；

$d_1=\sqrt{{(x-x_{\mathrm{source}})}^2+{(y-y_{\mathrm{source}})}^2+z_0^2}---\left(6\right);$

d ₂＝cosα*(L-y) (7)；

ss＝cosα*(L-y _source)-sinα*z ₀(8)；

Above formula sets up coordinate system in metamaterial panel, and wherein, the lower left corner of Meta Materials front surface is designated as the origin of coordinates 0 (0,0), and described metamaterial panel front surface is coordinate surface XOY;

N (x, y) represents the refractive index value of any point in core layer;

L represents the length in core layer abscissa direction;

N _maxrepresent the maximum of the refractive index of core layer;

N _minrepresent the minimum value of the refractive index of core layer;

λ represents the electromagnetic wavelength that satellite tv antenna receives;

Floor represents and rounds downwards;

(x _source, y _source) represent the coordinate of feed equivalent point;

Z0 represents the distance of feed equivalent point to metamaterial panel surface;

α represents the elevation angle of satellite in locality.

By first group of formula (1) to formula (8) or second group of formula (1) to formula (8) determined metamaterial flat, the plane wave that antenna can be made to receive can converge at feed equivalent point place after metamaterial flat.

Meta-material satellite antenna of the present invention is when using as transmitting antenna, and namely feed is as radiation source, the effect of metamaterial flat be plane wave that signal receiver is sent after metamaterial flat with the form outgoing of plane wave.

Meta-material satellite antenna of the present invention is when using as reception antenna, and namely feed is as wave collecting device, and the effect of metamaterial flat is that the plane wave that antenna can be made to receive can converge at feed equivalent point place after metamaterial flat.

Meta-material satellite antenna described above is different according to working frequency range and environment for use, can be satellite television receiving antenna, satellite communication antena (two-way communication), microwave antenna or radar antenna.Certainly, described meta-material satellite antenna of the present invention can also substitute other various reflector antenna.

In addition, the present invention also provides and present invention also offers a kind of satellite receiving system, comprise the satellite receiver (not indicating in figure) of satellite antenna, signal receiver, connection signal receiver, described satellite antenna is the above-mentioned meta-material satellite antenna of the present invention.In the present invention, described signal receiver is traditional corrugated horn.Satellite receiver such as can adopt the N6188 of Tongzhou Electronics, and for receiving the satellite TV signal of No. 9, culminant star, it is existing technology, no longer states herein.

By reference to the accompanying drawings embodiments of the invention are described above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, also can make a lot of form, these all belong within protection of the present invention.

Claims (6)

1. a meta-material satellite antenna, described meta-material satellite antenna comprises feed and metamaterial flat, and described metamaterial flat comprises core layer and is arranged on the reflecting surface of core layer rear surface; It is characterized in that, described reflecting surface is the conductive polymer film that conducting polymer composite is made, described conducting polymer composite comprises polypyrrole, polyphenylene sulfide, poly-phthalocyanine-like compound, polyparaphenylene, polyaniline or polythiophene, described core layer comprises substrate and is attached to multiple metal micro structures of substrate front surface, and described reflecting surface is attached to the rear surface of described substrate.

2. meta-material satellite antenna according to claim 1, is characterized in that, described meta-material satellite antenna also comprises the diaphragm covered on metal micro structure.

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

4. meta-material satellite antenna according to claim 1, is characterized in that, described metal micro structure is the plane with certain geometrical shape or stereochemical structure that are made up of wire.

5. meta-material satellite antenna according to claim 4, is characterized in that, described metal micro structure by etching, plating, bore quarters, photoetching, electronics carve or ion carve method adhere on the substrate.

6. a satellite receiving system, comprises the satellite receiver of satellite antenna, connection signal receiver, it is characterized in that, described satellite antenna is the meta-material satellite antenna described in claim 1 to 5 any one.