CN204558650U - Array antenna - Google Patents
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- CN204558650U CN204558650U CN201520275717.7U CN201520275717U CN204558650U CN 204558650 U CN204558650 U CN 204558650U CN 201520275717 U CN201520275717 U CN 201520275717U CN 204558650 U CN204558650 U CN 204558650U
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Abstract
The utility model provides a kind of array antenna, comprising: multiple radiation elements of array arrangement; Be arranged on the radiation port edge of the plurality of radiation element and the netted reflector connected with the plurality of radiation element; And the metamaterial layer be arranged on the plurality of radiation element, this metamaterial layer has the multiple conduction geometries corresponding with the plurality of radiation element, each conduction geometry is made up of the intersect vertically first I-shaped part and the second I-shaped part.
Description
Technical field
The utility model relates to field of microwave communication, particularly relates to a kind of array antenna.
Background technology
Array antenna is the device that field of microwave communication is commonly used.But the problem of the mutual coupling effect of objective reality, annoyings technical staff in existing array antenna group battle array process always.Present many scholars both domestic and external study mutual coupling problem, propose the method that some are revised and compensate.Present method is adopt by means of numerical methods in electromagnetic fields such as such as sawtooth FM, time-domain finite difference, Finite Element mostly, and the computational analysis of pair array antenna, then carries out the compensation of amplitude and phase place, to reduce mutual coupling effect.But this method relates to complicated electric current, relation complicated between electric charge and electromagnetic field.Another more traditional method is also had to utilize some periodically metal structures exactly, as EBG (electronic band gap structure), DGS (lacking earth subsidence structure) and introducing coupling unit, the mutual coupling between antenna array unit can be improved in certain degree.But the version of this method is too single, cell size is comparatively large, requires enough spaces.
Therefore, this area needs a kind of array antenna of improvement.
Utility model content
In order to overcome above-mentioned defect, the utility model aims to provide a kind of novel array antenna.
According to one side of the present utility model, provide a kind of array antenna, comprising:
Multiple radiation elements of array arrangement;
Be arranged on the radiation port edge of the plurality of radiation element and the netted reflector connected with the plurality of radiation element; And
Be arranged on the metamaterial layer on the plurality of radiation element, this metamaterial layer have the multiple conduction geometries corresponding with the plurality of radiation element, each conduction geometry is made up of the intersect vertically first I-shaped part and the second I-shaped part.
In one example, each I-shaped part comprises two transverse section and longitudinal section also vertical with it between both that are parallel to each other, and longitudinal section of this first I-shaped part and this second I-shaped part intersects vertically to form this conduction geometry.
In one example, this transverse section and this longitudinal section are made up of metal wire.
In one example, the length of the transverse section of this first I-shaped part is 0.4mm, the length of the transverse section of this second I-shaped part is 0.25mm, the length of longitudinal section of this first I-shaped part and this second I-shaped part is all 0.6mm, and this first I-shaped part is all 0.1mm with the transverse section of this second I-shaped part and the width of longitudinal section.
In one example, this metamaterial layer comprises substrate and is positioned at the conduction geometry layer at least one side of this substrate, and this conduction geometry layer comprises the plurality of conduction geometry corresponding with the plurality of radiation element.
In one example, this metamaterial layer comprises substrate and lays respectively at the two-layer conduction geometry layer on the two sides of this substrate, and each conduction geometry layer comprises the plurality of conduction geometry corresponding with the plurality of radiation element.
In one example, corresponding with each radiation element conduction geometry is positioned at directly over this radiation element.
In one example, this radiation element is waveguide trumpet.
In one example, this array antenna also comprises the dielectric layer between this netted reflector and this metamaterial layer.
In one example, this netted reflector is net-shaped metal plate.
In the utility model, by arranging anisotropic Meta Materials before radiation element, the man-made microstructure of periodic arrangement is utilized to regulate the near field distribution of aerial radiation, guide propagation direction, his-and-hers watches ground roll regulates, thus the mutual coupling effect between chopped radiation unit and radiation element, the final width Entropy density deviation changing aperture field.As can be indirectly equivalent to a lot of capacitor and inductor through the man-made microstructure of design in the utility model, thus pair array antenna mates, and finally reaches the object improving the gain of array antenna and improve mutual coupling.
Accompanying drawing explanation
After the detailed description of reading embodiment of the present disclosure in conjunction with the following drawings, more can understand above-mentioned feature and advantage of the present utility model better.
Fig. 1 shows the schematic perspective view of the array antenna according to one side of the present utility model;
Fig. 2 shows the partial enlarged drawing of the array antenna in Fig. 1;
Fig. 3 A and 3B shows vertical view and the end view of the local of the metamaterial layer comprising conduction geometry respectively;
Fig. 4 shows the radiation port distribution map of this array antenna;
Fig. 5 A-5E shows the analogous diagram of the coupling performance of the array antenna in Fig. 4.
For clarity sake, the brief description of Reference numeral is below provided:
100: array antenna 110: radiation element 120: netted reflector 130: dielectric layer
140,200: metamaterial layer 210: substrate 220,230: conduction geometry
221,223: transverse section 222,224: longitudinal section
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.Note, the aspects described below in conjunction with the drawings and specific embodiments is only exemplary, and should not be understood to carry out any restriction to protection range of the present utility model.
Meta Materials is made up of medium substrate and the man-made microstructure be arranged on substrate, can provide the characteristic that various common material does not have.Man-made microstructure has electroresponse and magnetic response to extra electric field and magnetic field, thus shows effective dielectric constant and equivalent permeability.And the effective dielectric constant of man-made microstructure and equivalent permeability control artificially by the physical dimension parameter designing man-made microstructure.Such as, by designing the pattern of each man-made microstructure and/or size and man-made microstructure being arranged according to certain rules, the electromagnetic parameter of material monolithic is made to be certain rule arrangement.The electromagnetic parameter of rule arrangement makes Meta Materials have response macroscopically to electromagnetic wave, such as, converges electromagnetic wave, divergent electromagnetic ripple, electromagnetic wave absorption etc.In practice, generally according to the spatial radiation characteristic of antenna, calculate the electromagnetic parameter required for each position in metamaterial layer, and then gone out the geometric parameter of this place's man-made microstructure by simulation software backwards calculation.
Fig. 1 shows the schematic perspective view of the array antenna 100 according to one side of the present utility model, and Fig. 2 shows the partial enlarged drawing of this array antenna 100.As shown in the figure, array antenna 100 comprises multiple radiation element 110 and is arranged on the radiation port edge of these radiation elements 110 and the netted reflector 120 connected with these radiation elements 110.Such as, this netted reflector 120 can be net-shaped metal plate.These radiation elements 110 are arranged in array, and form radiation element array, using the primary element as array antenna.Correspondingly, this net-shaped metal plate can be arranged with multiple opening, the shape size of opening is consistent with the shape size of the radiation port of radiation element 110.Net-shaped metal plate is arranged on the radiation port edge of the radiation element 110 of array arrangement, makes the open butt joint of radiation port just and on net-shaped metal plate of each radiation element 110.Each radiation element 110 can be waveguide trumpet, with radiated electromagnetic wave signal.In this way, owing to there being the existence in netted reflector 120 around the radiation port of radiation element 110, the electromagnetic wave given off from radiation port is made to exist only in above netted reflector, i.e. only forwards radiation and rightabout region can not be radiated.Netted reflector 120 can be provided with dielectric layer 130.
On this multiple radiation element 110, such as, above dielectric layer 130, be provided with a metamaterial layer 140.This metamaterial layer 140 has the multiple conduction geometries corresponding with multiple radiation element 110, and each conduction geometry is made up of the intersect vertically first " work " glyph part and second " work " glyph part.That is, for each radiation element 110, to the position of radiation element 110 should having and conduct electricity geometry accordingly in metamaterial layer 140.That is, corresponding with each radiation element 110 conduction geometry is positioned at directly over this conduction geometry.Conduction geometry in the present invention is the man-made microstructure be made up of metal or nonmetallic electric conducting material.
Fig. 3 A and 3B shows vertical view and the end view of the local of the metamaterial layer 200 comprising conduction geometry respectively.Here metamaterial layer 200 may correspond to the metamaterial layer 140 in Fig. 1 and Fig. 2, and Fig. 3 A and Fig. 3 B illustrate only the part corresponding with a radiation element 110 of metamaterial layer 200.
Metamaterial layer 200 can comprise substrate 210.Substrate 210 shown in Fig. 3 B all has one deck conduction geometry layer in every one side, but this is preferred embodiment.In other example, substrate 210 only can have conduction geometry layer in one side.
As shown in figs.3 a and 3b, every one deck conduction geometry layer comprises the multiple conduction geometries corresponding with multiple radiation elements of array antenna.Fig. 3 A with 3B illustrate only the metamaterial layer part corresponding with a radiation element, and correspondingly, this part illustrate only conduction geometry 220 and 230 corresponding with this radiation element in every one deck, each conduction geometry can have identical structure.
As shown in Figure 3A, to conduct electricity geometry 220, conduction geometry 220 can be made up of the intersect vertically first " work " glyph part and second " work " glyph part.Each I-shaped part can comprise two transverse section and longitudinal section also vertical with it between these two transverse section that are parallel to each other.Specifically, the first I-shaped part can comprise two transverse section 221 and the I-shaped part of longitudinal section 222, second can comprise two transverse section 223 and longitudinal section 224.Longitudinal section 222,224 of the first I-shaped part and the second I-shaped part intersects vertically to form this conduction geometry 220.Those transverse section and longitudinal section can be made up of metal wire.
In one example, the length of the transverse section 221 of the first I-shaped part can be 0.4mm, the length of the transverse section 223 of the second I-shaped part can be 0.25mm, the length of longitudinal section 222,224 of the first I-shaped part and the second I-shaped part can be all 0.6mm, and the transverse section 221,223 of the first I-shaped part and the second I-shaped part and the width of longitudinal section 222,224 can be all 0.1mm.The thickness of substrate 210 can be 0.7mm, and dielectric constant can be 3.It is the square of 2.23mm that the metamaterial layer part of the correspondence radiation element shown in Fig. 3 A can be the length of side.
In the utility model, by arranging anisotropic Meta Materials before radiation element, the man-made microstructure of periodic arrangement is utilized to regulate the near field distribution of aerial radiation, guide propagation direction, his-and-hers watches ground roll regulates, thus the mutual coupling effect between chopped radiation unit and radiation element, the final width Entropy density deviation changing aperture field.As can be indirectly equivalent to a lot of capacitor and inductor through the man-made microstructure of design in the utility model, thus pair array antenna mates, and finally reaches the object improving the gain of array antenna and improve mutual coupling.
Fig. 4 shows the radiation port distribution map according to array antenna of the present utility model, and Fig. 5 A-5E shows the analogous diagram of the coupling performance of the array antenna in Fig. 4.From Fig. 4, also can find out the position corresponding relation of netted reflector and each radiation element, namely netted reflector is arranged on the radiation port edge of radiation element, makes the respective openings on the radiation port docking reflector of radiation element.Label 1,2,3,4 in Fig. 4 represents four adjacent radiation port respectively.Usually, when analyzing the mutual coupling relation of arbitrary unit and other unit being arranged in array antenna, need to consider that the two-layer recently radiation element of this unit affects it.Fig. 5 A-5E with mark in Fig. 4 four radiation elements for object has carried out numerical simulation.Fig. 5 A-5C respectively illustrates radiation element 1 and radiation element 2, radiation element 1 and radiation element 3 and the coupling coefficient between radiation element 1 and radiation element 4, wherein S12a-S 14a represents the simulation result of conventional arrays antenna, and S12b-S14b represents the simulation result according to array antenna of the present utility model.Fig. 5 D shows the reflection coefficient emulation of the vertically polarized wave of radiation element 1 individuality of the center being positioned at array antenna, Fig. 5 E shows the reflection coefficient emulation of the horizontal polarized wave of radiation element 1 individuality, wherein S11a represents the simulation result of conventional arrays antenna, and S11b represents the simulation result according to array antenna of the present utility model.
And the gain level according to array antenna of the present utility model is improved compared to the conventional arrays antenna without Meta Materials.Show conventional arrays antenna with following table 1 and contrast according to the gain level of the horizontal polarization (H polarization) of array antenna of the present utility model.
Table 1
Show conventional arrays antenna with following table 2 and contrast according to the gain level of the perpendicular polarization (V polarization) of array antenna of the present utility model.
Table 2
Can be found that by simulation result there is according to array antenna of the present utility model antenna gain and the mutual coupling of improvement.
Description before providing is to make any technical staff in this area all can put into practice various aspects described herein.But should be appreciated that, protection range of the present utility model should be as the criterion with claims, and should not be defined to concrete structure and the assembly of above explained orally embodiment.Those skilled in the art, in spirit and scope of the present utility model, can carry out various variation and amendment to each embodiment, and these variations and amendment also drop within protection range of the present utility model.
Claims (10)
1. an array antenna, is characterized in that, comprising:
Multiple radiation elements of array arrangement;
Be arranged on the radiation port edge of described multiple radiation element and the netted reflector connected with described multiple radiation element; And
Be arranged on the metamaterial layer on described multiple radiation element, described metamaterial layer have the multiple conduction geometries corresponding with described multiple radiation element, each conduction geometry is made up of the intersect vertically first I-shaped part and the second I-shaped part.
2. array antenna as claimed in claim 1, it is characterized in that, each I-shaped part comprises two transverse section and longitudinal section also vertical with it between both that are parallel to each other, and longitudinal section of described first I-shaped part and described second I-shaped part intersects vertically to form described conduction geometry.
3. array antenna as claimed in claim 2, it is characterized in that, described transverse section and described longitudinal section are made up of metal wire.
4. array antenna as claimed in claim 3, it is characterized in that, the length of the transverse section of described first I-shaped part is 0.4mm, the length of the transverse section of described second I-shaped part is 0.25mm, the length of longitudinal section of described first I-shaped part and described second I-shaped part is all 0.6mm, and described first I-shaped part and the described transverse section of the second I-shaped part and the width of longitudinal section are all 0.1mm.
5. array antenna as claimed in claim 1, it is characterized in that, described metamaterial layer comprises substrate and is positioned at the conduction geometry layer at least one side of described substrate, and described conduction geometry layer comprises the described multiple conduction geometries corresponding with described multiple radiation element.
6. array antenna as claimed in claim 5, it is characterized in that, described metamaterial layer comprises substrate and lays respectively at the two-layer conduction geometry layer on the two sides of described substrate, and each conduction geometry layer comprises the described multiple conduction geometries corresponding with described multiple radiation element.
7. the array antenna as described in any one of claim 1 ~ 6, is characterized in that, the conduction geometry corresponding with each radiation element is positioned at directly over this radiation element.
8. the array antenna as described in any one of claim 1 ~ 6, is characterized in that, described radiation element is waveguide trumpet.
9. the array antenna as described in any one of claim 1 ~ 6, is characterized in that, also comprises the dielectric layer between described netted reflector and described metamaterial layer.
10. array antenna as claimed in claim 1, it is characterized in that, described netted reflector is net-shaped metal plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275717.7U CN204558650U (en) | 2015-04-30 | 2015-04-30 | Array antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520275717.7U CN204558650U (en) | 2015-04-30 | 2015-04-30 | Array antenna |
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| Publication Number | Publication Date |
|---|---|
| CN204558650U true CN204558650U (en) | 2015-08-12 |
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| CN201520275717.7U Active CN204558650U (en) | 2015-04-30 | 2015-04-30 | Array antenna |
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- 2015-04-30 CN CN201520275717.7U patent/CN204558650U/en active Active
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