CN102790287B - Sea-air radar antenna - Google Patents
Sea-air radar antenna Download PDFInfo
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- CN102790287B CN102790287B CN201110125312.1A CN201110125312A CN102790287B CN 102790287 B CN102790287 B CN 102790287B CN 201110125312 A CN201110125312 A CN 201110125312A CN 102790287 B CN102790287 B CN 102790287B
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Abstract
An embodiment of the invention relates to a sea-air radar antenna, comprising a meta-material cavity formed by a plurality of meta-material panels and an omnidirectional multipoint radiation source radiation source disposed in the meta-material cavity. The meta-material panel comprises at least a meta-material sheet which comprises a substrate and artificial microstructures attached to the substrate. The meta-material panel is divided into a plurality of band-shaped areas, and in each band-shaped area, refractive index of the meta-material panel changes continuously and the refractive index in each band-shaped area increases continuously from a center of the meta-material panel to two-side directions. Also, at least two adjacent areas of a first area and a second area exist in the plurality of band-shaped areas. The refractive index of the first area increases continuously from D1 to D2, and the refractive index of the second area increases continuously from D3 to D4, wherein D2> D3. The radar antenna is relatively small in size, simple in manufacturing process, and can scan sky and sea surface at the same time.
Description
Technical field
The present invention relates to super material technology, relate in particular to a kind of radar antenna.
Background technology
Utilize radar to realize the search to sea and aerial target, prior art has three kinds of implementations, one, respectively set up mechanical scanning to empty and to sea radar; Two, utilize complicated designing and manufacturing with the antenna to empty secondary lobe; Three, by the method for phase array, realize the scanning respectively of wave beam.Inventor, in implementing process of the present invention, finds that prior art at least exists following technical problem: first kind of way, and because antenna scanning speed is low, cause information updating speed slow, because two antennas are discrete, volume is excessive, and energy consumption is high; The second way, due to the relation of traditional antenna secondary lobe precision, radar accuracy is not high; The third mode, phased array radar face in the course of the work energy consumption is too high, and phase-condition system is manufactured complicated, high cost.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of air-sea radar antenna is provided, and small volume, manufacturing process be simple, can to aerial and sea, carry out comprehensive scanning simultaneously.
For solving the problems of the technologies described above, a kind of air-sea radar antenna is provided, comprise: the super material cavity that a plurality of super material panels form and the omnidirectional's multiple spot radiation source that is arranged at super material inside cavity, described super material panel comprises at least one super sheet of material, described super sheet of material comprises substrate and a plurality of artificial micro-structural being attached on described substrate, described super material panel is divided into a plurality of belt-like zones, described in each in belt-like zone the refractive index of described super material panel change continuously and each belt-like zone in refractive index mind-set both sides direction from super material panel become continuously greatly, and in a plurality of belt-like zones, at least there is two adjacent first areas and second area, the refractive index of first area increases to D2 continuously from D1, the refractive index of second area increases to D4 continuously from D3, and meet D2 > D3.
Technique scheme at least has following beneficial effect: antenna of the present invention comprises the super material cavity that a plurality of super material panels form and the omnidirectional's multiple spot radiation source that is arranged at super material inside cavity.Each super material panel can make the electromagnetic wave of incident be divided into two bundles and then respectively aerial and sea be scanned, this radar antenna small volume, manufacturing process simply, can to sky and sea, scan simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of air-sea radar antenna of the present invention;
Fig. 2 is the schematic diagram that electromagnetic wave that super material panel of the present invention sends feedback point corresponding with it in omnidirectional's multiple spot radiation source is divided into two bundles;
Fig. 3 is the structural representation of super material panel of the present invention;
Fig. 4 is the schematic diagram of the second embodiment that artificial micro-structural derives as shown in Figure 3;
Fig. 5 is the schematic diagram of the 3rd embodiment that artificial micro-structural derives as shown in Figure 4.
Embodiment
Super material is a kind ofly to take artificial micro-structural 2 and carry out spatial arrangement, have the new material of special electromagnetic response as elementary cell and with ad hoc fashion, comprises artificial micro-structural 2 and the substrate 1 adhering to for artificial micro-structural.Planar structure or the stereochemical structure of artificial micro-structural 2 for being formed by least one one metal wire, a plurality of artificial micro-structurals 2 array arrangement on substrate 1, each artificial micro-structural 2 with and the accompanying shared part of substrate 1 be a super material cell.Substrate 1 can be the different material of any and artificial micro-structural 2, and the stack of this bi-material makes each super material cell produce an effective dielectric constant and magnetic permeability, these two physical parameters are corresponding respectively electric field response and the magnetic responsiveness of super material cell.
Figure 1 shows that the structural representation of air-sea radar antenna of the present invention, this antenna comprises super material cavity 100 and is arranged at the omnidirectional's multiple spot radiation source 20 in super material cavity 100, this omnidirectional's multiple spot radiation source 20 comprises the feedback point that a plurality of radiation directions are different with angle, super material cavity 100 consists of a plurality of super material panels 10, the electromagnetic wave that super material panel 10 of the present invention can make feedback point send is divided into two beams and goes out, and then realizes the scanning to aerial and sea.Antenna of the present invention also comprises electromagnetic wave channel to channel adapter 30, control unit 40 and the feed 50 that is arranged at super material cavity 100 outsides.Wherein, electromagnetic wave channel to channel adapter 30 comprises a plurality of outputs and an input, and a feedback point of each output and omnidirectional's multiple spot radiation source 20 connects one to one, and its input is connected with feed 50.Control unit 40 is for controlling the opening and closing of each output of electromagnetic wave channel to channel adapter 30, when a certain output during in opening state the feedback point of connection corresponding to it have electromagnetic wave to penetrate.First the electromagnetic wave penetrating from each feedback point will, by the super material panel 10 arranging in its radiation areas, then just can be radiated free space.As the known electromagnetic refractive index of common practise with
proportional, when a branch of electromagnetic wave propagates into another medium by a kind of medium, electromagnetic wave can reflect, and when the refraction index profile of material inside is non-homogeneous, electromagnetic wave will be to the larger position deviation of refractive index ratio.Therefore according to above-mentioned principle, by changes, surpass the refraction index profile in material panel 10, just can change the electromagnetic wave propagation path of ejaculation, so make electromagnetic wave through arbitrary super material panel 10 ejaculations be divided into two bundles respectively in the air and sea scan.Further, by 40 pairs of electromagnetic wave channel to channel adapters 30 of control unit, control, can select to open different outputs and then make different directions and the feedback of angle point has electromagnetic wave to penetrate, realize beam space scanning angle is controlled.Also can open a plurality of outputs simultaneously, realize omnibearing air-sea scanning.
Figure 2 shows that electromagnetic wave that feedback point that in the super material panel 10Shi omnidirectional multiple spot radiation source 20 that forms super material cavity 100, correspondence is opened sends is divided into the schematic diagram of two bundles.Super material panel 10 shown in Fig. 2 comprises at least one super sheet of material 3, each super sheet of material 3 comprises the substrate 1 of sheet and is attached to a plurality of artificial micro-structural 2 on substrate 1, each artificial micro-structural 2 with and the accompanying shared part of substrate 1 be a super material cell.The concrete structure of super material panel 10 as shown in Figure 3, in the present embodiment, super material panel 10 is by stacking formation of a plurality of super sheet of material 3, between this each super sheet of material 3, equidistantly arrange ground assembling, or between two between lamella direct forward and backward surface link into an integrated entity bondingly.During concrete enforcement, the number of super sheet of material 3 can design according to demand.Each super sheet of material 3 is formed by a plurality of super material cell arrays, and whole super material panel 10 can be regarded as by a plurality of super material cell and forms along X, Y, tri-direction array arrangements of Z.In super material panel 10 of the present invention, the length of side of each super material cell be incident electromagnetic wave wavelength 1/5 to 1/10 between.The refraction index profile of each super sheet of material 3 that forms same super material panel 10 in the present embodiment is all identical.By the known super material of great many of experiments, to the feature of electromagnetic response, be that feature by artificial micro-structural 2 is determined, and the electromagnetic response of artificial micro-structural 2 depend on topological characteristic and its physical dimension that its pattern wiry has to a great extent.According to topological graph and the physical dimension of each artificial micro-structural 2 of arranging in the super material panel of this principle design 10 spaces, just can arrange the electromagnetic parameter of every bit in super material panel 10.
Super material panel 10 of the present invention is divided into six refractive index continually varying belt-like zones 5 as shown in Figure 2, in the continuous variation of refractive index of the interior super material panel 10 of each belt-like zone 5 and the refractive index mind-set both sides direction from super material panel 10 in each belt-like zone 5, becomes greatly continuously.The refractive index of first belt-like zone 5 increases to n2 continuously from n1 as shown in the figure, the refractive index of second belt-like zone 5 increases to n4 continuously from n3, the refractive index of the 3rd belt-like zone 5 increases to n6 continuously from n5, the refractive index of the 4th belt-like zone 5 increases to n12 continuously from n1, the refractive index of the 5th belt-like zone 5 increases to n14 continuously from n13, the refractive index of the 6th belt-like zone 5 increases to n16 continuously from n15, n2 >=n3 wherein, n4 >=n5, n12 >=n3, n14 >=n15, gets equal sign when above-mentioned each inequality is different.When presenting an electromagnetic wave sending through having after the super material panel 10 of above-mentioned refraction index profile rule, outgoing electromagnetic wave is respectively to the 3rd belt-like zone 5 and the 6th the belt-like zone 5 direction deviations that are positioned at the edge of super material panel 10, and then realized the separation of electromagnetic beam.The refractive index of the super material panel 10 in the present invention in each belt-like zone 5 both can change for LINEAR CONTINUOUS, also can be non-linear continuous variation, variations in refractive index scope in each belt-like zone 5 is not limited only to the description of embodiment above, as long as the continuous variation of refractive index and the refractive index in each belt-like zone 5 that meet in each belt-like zone 5 become large continuously from super material center to two side directions, and at least there are two adjacent belt-like zones, the refractive index of first area increases to D2 continuously from D1, the refractive index of second area increases to D4 continuously from D3, and meet D2 > D3, can realize the separation of electromagnetic beam.
The artificial micro-structural 2 that realizes above-mentioned refraction index profile relation have a variety of can implementation, for the artificial micro-structural 2 of planar structure, its geometry can be that axial symmetry also can non-axial symmetry; For three-dimensional structure, it can be the rotational symmetric Arbitrary 3 D figure of non-90 degree.
Experimental results show that, the artificial micro-structural 2 of identical patterns, its physical dimension is directly proportional to DIELECTRIC CONSTANT ε, therefore in the situation that incident electromagnetic wave is definite, artificial micro-structural 2 the arranging in super sheet of material of topological pattern and different size by the artificial micro-structural 2 of appropriate design, just can adjust the refraction index profile of super material panel 10.
The artificial micro-structural 2 of plane is all attached on the surface of flat substrates 1 as shown in Figure 3.In figure, artificial micro-structural 2 is " work " font, comprises vertical the first wire 201 and is connected to the first wire 201 two ends and perpendicular to the second wire 202 of the first wire 201.Super material panel 10 consists of a plurality of identical super sheet of material 3.Super material panel 10 comprises a plurality of belt-like zones 5, in each belt-like zone 5, the size of the artificial micro-structural 2 of " work " font increases to side directions continuously from super material center, and then the refractive index of the super material panel 10 in belt-like zone 5 increases to two side directions continuously from super material center, and in a plurality of belt-like zones 5, at least have two adjacent regions, in two adjacent regions, the artificial micro-structural 2 of the region inside dimension maximum in the close center of circle is greater than the artificial micro-structural 2 of the size minimum in another region.When the electromagnetic wave sending when feedback point is injected the super material panel 10 of the present embodiment, outgoing electromagnetic wave is divided into two bundles, can to aerial and sea, scan respectively.
Embodiment illustrated in fig. 4 is the derivative of artificial micro-structural 2 shown in Fig. 3, derivative artificial micro-structural 2 in Fig. 4 not only comprises the first wire 201 and second wire 202 of formation " work " font, also comprises being connected to the second wire 202 two ends and perpendicular to the 3rd wire 203 of the second wire 202.
Embodiment illustrated in fig. 5 is artificial micro-structural 2 further derivative of Fig. 4, and its artificial micro-structural 2 also comprises and is connected to the 3rd wire 203 two ends and perpendicular to the 4th wire 204 of the 3rd wire 203 on the basis of Fig. 4.The rest may be inferred, and artificial micro-structural 2 of the present invention also has infinite a plurality of.The length that the length that the length of the second wire 202 is less than the first wire 201, the three wires 203 is less than the second wire 202, the four wires 204 is less than the 3rd wire 203, and the rest may be inferred.
Wherein, 201, each first wire is connected with the second wire 202, does not intersect with other any wires; Any N wire only intersects and is connected with (N+1) wire with (N-1) wire, will not intersect by other any wires, and N is more than or equal to 2 here.
Be to be understood that, the super material panel 10 of the air-sea radar antenna of the embodiment of the present invention can adopt the artificial micro-structural 2 of the symmetrical structures such as " king " font or " ten " font, also can adopt the artificial micro-structural 2 of other unsymmetric structures, as long as form the refraction index profile of each super material panel 10 of super material cavity 100, all meet above-mentioned relation, by to the shape of artificial micro-structural 2, size with arrange to arrange and can make the electromagnetic wave of injecting be divided into two bundle outgoing, and then realize the scanning to aerial and sea.Further, by electromagnetic wave channel to channel adapter 30 is controlled, can select to open different outputs, realize beam space scanning angle is controlled.Also can open a plurality of outputs simultaneously, realize omnibearing air-sea scanning.During concrete enforcement, can draw its dielectric constant and magnetic permeability by calculating and emulation, then constantly adjust the shape and size of artificial micro-structural 2, until the value of its dielectric constant and magnetic permeability meets above-mentioned refraction index profile.
In above-described embodiment, artificial micro-structural 2 consists of wires such as at least one copper wire or filamentary silvers, has special pattern.Metal wire by etching, plating, brill quarter, photoetching, electronics is carved or ion quarter etc. method be attached on substrate 1.Wherein etching is manufacturing process preferably, its step is after designing the plane pattern of suitable artificial micro-structural 2, first a tinsel is integrally attached on substrate 1, then pass through etching machines, utilize the chemical reaction of solvent and metal to get rid of artificial micro-structural 2 predetermined pattern paillon foil part in addition, the remaining artificial micro-structural 2 that can obtain array arrangement.Substrate 1 is made by pottery, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material etc.For example, the macromolecular material such as polytetrafluoroethylene, epoxy resin, FR-4, F4B.
The above is the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (9)
1. an air-sea radar antenna, it is characterized in that, comprise: the super material cavity that a plurality of super material panels form and the omnidirectional's multiple spot radiation source being formed by a plurality of feedback points that is arranged at super material inside cavity, described super material panel comprises at least one super sheet of material, described super sheet of material comprises substrate and a plurality of artificial micro-structural being attached on described substrate, described super material panel is divided into a plurality of belt-like zones, described in each in belt-like zone the refractive index of described super material panel change continuously and each belt-like zone in refractive index mind-set both sides direction from super material panel become continuously greatly, and in a plurality of belt-like zones, at least there is two adjacent first areas and second area, the refractive index of first area increases to D2 continuously from D1, the refractive index of second area increases to D4 continuously from D3, and meet D2>D3,
Described antenna also comprises:
The feed of emitting electromagnetic wave;
The electromagnetic wave channel to channel adapter being connected with described omnidirectional multiple spot radiation source with described feed respectively, described electromagnetic wave channel to channel adapter comprises a plurality of outputs, a plurality of feedback points of described a plurality of outputs and omnidirectional's multiple spot radiation source connect one to one;
Electromagnetic wave channel to channel adapter is carried out to the control unit of gating control.
2. air-sea radar antenna as claimed in claim 1, is characterized in that, described super material panel by a plurality of refraction index profile all identical super sheet of material along stacking formation of direction perpendicular to described sheet surfaces.
3. air-sea radar antenna as claimed in claim 1, it is characterized in that, described artificial micro-structural has identical geometry, described in each, in belt-like zone, the size of described artificial micro-structural mind-set both sides direction from super material panel becomes large continuously, and in a plurality of belt-like zones, at least have two adjacent regions, in described two adjacent regions, the artificial micro-structural of the region inside dimension maximum in the close center of circle is greater than the artificial micro-structural of another region inside dimension minimum.
4. the air-sea radar antenna as described in claim 1～3 any one, is characterized in that, planar structure or the stereochemical structure of artificial micro-structural for being comprised of at least one one metal wire described in each.
5. air-sea radar antenna as claimed in claim 4, is characterized in that, described wire is copper wire or filamentary silver.
6. air-sea radar antenna as claimed in claim 5, is characterized in that, described wire is attached on substrate by etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method.
7. air-sea radar antenna as claimed in claim 1, is characterized in that, described substrate is made by pottery, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material.
8. air-sea radar antenna as claimed in claim 1, is characterized in that, described artificial micro-structural is axially symmetric structure.
9. air-sea radar antenna as claimed in claim 8, is characterized in that, described artificial micro-structural is " work " font, " ten " font or " king " font.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110125312.1A CN102790287B (en) | 2011-05-16 | 2011-05-16 | Sea-air radar antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110125312.1A CN102790287B (en) | 2011-05-16 | 2011-05-16 | Sea-air radar antenna |
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| CN102790287A CN102790287A (en) | 2012-11-21 |
| CN102790287B true CN102790287B (en) | 2014-04-16 |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3975737A (en) * | 1975-11-07 | 1976-08-17 | The United States Of America As Represented By The Secretary Of The Army | Radome-antenna structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7570432B1 (en) * | 2008-02-07 | 2009-08-04 | Toyota Motor Engineering & Manufacturing North America, Inc. | Metamaterial gradient index lens |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3975737A (en) * | 1975-11-07 | 1976-08-17 | The United States Of America As Represented By The Secretary Of The Army | Radome-antenna structure |
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