CN102956975B - Horn antenna - Google Patents
Horn antenna Download PDFInfo
- Publication number
- CN102956975B CN102956975B CN201110254402.0A CN201110254402A CN102956975B CN 102956975 B CN102956975 B CN 102956975B CN 201110254402 A CN201110254402 A CN 201110254402A CN 102956975 B CN102956975 B CN 102956975B
- Authority
- CN
- China
- Prior art keywords
- metal
- meta materials
- micro
- structural
- horn antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses a horn antenna which comprises an antenna body and a metamaterial tightly attached to the aperture surface of the antenna body, wherein the central axis of the antenna body penetrates through a central point of the metamaterial; the metamaterial comprises a base material and a plurality of artificial metal microstructures arranged into a circle on the base material; the refractive indexes of all parts of the metamaterial are distributed into a circle; the refractive index at the circle center is minimum; with the increase of the radius, the refractive index is gradually increased; and the refractive indexes at the same radius are the same. The metamaterial with a dispersion function is arranged on the conventional antenna body; and the radiation angle of the antenna body is expanded.
Description
Technical field
The present invention relates to antenna technical field, particularly relate to a kind of horn antenna.
Background technology
Horn antenna refers to the trumpet-shaped antenna of waveguide terminal flare up, and it is gained the name and comes from its shape.Horn antenna structure is simple and directional diagram is easy to control, can be used as directive antenna and also can be used as feed.
The angle of radiation of horn antenna is determined by bell-mouthed size, when needs expand its angle of radiation, needs accordingly to expand its bell-mouthed size.Under current all kinds of electronic devices and components pursue the trend of miniaturization, high-gain, how to expand again its radiation scope in the horn mouth size not expanding horn antenna and become problem demanding prompt solution.
Summary of the invention
Technical problem to be solved by this invention is, for the above-mentioned deficiency of prior art, proposes the wider and horn antenna that angle of radiation can freely control, size is less of a kind of radiation scope.
The present invention solves its technical problem, and the technical scheme of employing proposes a kind of horn antenna, and it comprises: antenna body and the Meta Materials be close on the bore face of antenna body, and the central axis of described antenna body passes the central point of described Meta Materials; Described Meta Materials comprises base material and cycle and is arranged in multiple artificial metal's micro-structurals on base material, the rounded distribution of described Meta Materials refractive index everywhere, the refractive index of circle centre position is minimum, along with the increase of radius, refractive index increases gradually, and the refractive index at same radius place is identical.
Further, the refraction index profile of described Meta Materials meets rule:
Wherein, r is the radius value with identical refractive index; D is the thickness of Meta Materials; Ss is by the distance of the some spacing Meta Materials central point of described antenna body equivalence; N (0) is the refractive index value of described Meta Materials central point; θ is the electromagnetic angle of emergence after being dispersed by Meta Materials.
Further, the bore face shape of described antenna body is circular, rectangle or trapezoidal.
Further, described multiple artificial metal's micro-structural has identical geometry, the rounded distribution on the substrate of described multiple artificial metal's micro-structural, artificial metal's microstructure size of circle centre position is minimum, along with the increase of radius, the size of artificial metal's micro-structural increases, and artificial metal's microstructure size at same radius place is identical.
Further, the geometry of described artificial metal's micro-structural is " work " font, comprises the first vertical metal branch and is positioned at described first metal branch two ends and perpendicular to the second metal branch of described first metal branch.
Further, described geometry also comprises and is positioned at described second metal branch two ends and perpendicular to the 3rd metal branch of described second metal branch.
Further, the geometry of described artificial metal's micro-structural is plane snowflake type, comprises orthogonal two the first metal branch and is positioned at described first metal branch two ends and perpendicular to the second metal branch of described first metal branch.
Further, described base material is macromolecular material, ceramic material, ferroelectric material, ferrite material or ferromagnetic material.
Further, described base material is FR4 material or F4B material.
Further, described artificial metal's micro-structural is arranged on described base material by etching, electroplating, bore quarter, photoetching, electronics quarter or ion cycle of carving.
The present invention, by setting up the Meta Materials having and disperse function on existing antenna body, expands the angle of radiation of antenna body.
Accompanying drawing explanation
Fig. 1 is the perspective view of the elementary cell forming Meta Materials;
Fig. 2 is the structural representation of a kind of horn antenna of the present invention;
Fig. 3 is the perspective view of Meta Materials in a kind of horn antenna of the present invention;
Fig. 4 is that on the Meta Materials vertical section on horn antenna of the present invention, refraction index profile calculates schematic diagram;
Fig. 5 is when the antenna body bore face shape of horn antenna is rectangle, the schematic cross-section of Meta Materials;
Fig. 6 can produce response to change the geometry topology pattern of artificial metal's micro-structural of the first better embodiment of Meta Materials elementary cell refractive index to electromagnetic wave;
Fig. 6 a is the derivative pattern of artificial metal's micro-structural geometry topology pattern in Fig. 6;
Fig. 7 can produce response to change the geometry topology pattern of artificial metal's micro-structural of the second better embodiment of Meta Materials elementary cell refractive index to electromagnetic wave;
Fig. 7 a is the derivative pattern of artificial metal's micro-structural geometry topology pattern in Fig. 7.
Embodiment
Light, as electromagnetic one, it is when passing glass, because the wavelength of light is much larger than the size of atom, therefore we can use the univers parameter of glass, such as refractive index, instead of the details parameter of the atom of composition glass describes the response of glass to light.Accordingly, when research material is to other electromagnetic responses, in material, any yardstick also can with the univers parameter of material to electromagnetic response much smaller than the structure of electromagnetic wavelength, and such as DIELECTRIC CONSTANT ε and magnetic permeability μ describe.The structure often put by designing material is made the dielectric constant of material each point and magnetic permeability all identical or different thus makes the dielectric constant of material monolithic and magnetic permeability be certain rule arrangement, magnetic permeability and the dielectric constant of rule arrangement can make material have response macroscopically to electromagnetic wave, such as, converge electromagnetic wave, divergent electromagnetic ripple etc.Such have rule arrangement magnetic permeability and dielectric constant material we be referred to as Meta Materials.
As shown in Figure 1, Fig. 1 is the perspective view of the elementary cell forming Meta Materials.The elementary cell of Meta Materials comprises the base material 2 of man-made microstructure 1 and the attachment of this man-made microstructure.In the present invention, man-made microstructure is artificial metal micro structure, artificial metal's micro-structural has and can produce the plane of response or three-dimensional topological structure to incident electromagnetic wave electric field and/or magnetic field, and the pattern and/or the size that change the artificial metal's micro-structural in each Meta Materials elementary cell can change each Meta Materials elementary cell to the response of incident electromagnetic wave.Multiple Meta Materials elementary cell arranges according to certain rules and Meta Materials can be made to have the response of macroscopic view to electromagnetic wave.Due to Meta Materials overall need to incident electromagnetic wave have macroscopical electromagnetic response therefore each Meta Materials elementary cell need form continuous response to the response of incident electromagnetic wave, this requires that each Meta Materials elementary cell is of a size of 1/1 to five/10th of incident electromagnetic wave, is preferably 1/10th of incident electromagnetic wave.During this section describes, what we were artificial is divided into multiple Meta Materials elementary cell by Meta Materials entirety, but should know that this kind of division methods is only for convenience of description, should not regard Meta Materials as spliced by multiple Meta Materials elementary cell or assemble, in practical application, Meta Materials is arranged on base material in artificial metal's micro-structural cycle and can forms, and technique is simple and with low cost.Namely cycle arrangement refers to that the artificial metal's micro-structural in above-mentioned each Meta Materials elementary cell that we artificially divide can produce continuous print electromagnetic response to incident electromagnetic wave.
Please refer to Fig. 2, Fig. 2 is the structural representation of horn antenna of the present invention.In Fig. 2, horn antenna comprises antenna body 100 and is close to the Meta Materials 300 on antenna body bore face.The axis of symmetry of antenna body passes the central point of Meta Materials.
Please refer to Fig. 3, Fig. 3 is the perspective view of Meta Materials in horn antenna of the present invention.In Fig. 3, Meta Materials 300 comprises base material 301, and the cycle is arranged in the multiple artificial metal's micro-structurals 302 on base material.In the present embodiment, for encapsulating convenient and protection artificial metal micro-structural, multiple artificial metal's micro-structural 302 is also coated with the cover layer 303 that a layer thickness is all identical with base material 301 with material.Multiple artificial metal's micro-structural 302 all has identical geometry, the rounded distribution on base material 301 of multiple artificial metal's micro-structural 302, circle centre position, also namely artificial metal's microstructure size of Meta Materials center is minimum, along with the increase of radius, artificial metal's microstructure size increases, and artificial metal's microstructure size at same radius place is identical.
When Meta Materials 300 is cut open from centre, the refraction index profile on the vertical section of Meta Materials 300 revolves the overall refractive index distribution of turning around and being Meta Materials 300.We can learn the refraction index profile of Meta Materials 300 entirety by the refraction index profile on Meta Materials 300 vertical section.As shown in Figure 4, Fig. 4 is that on Meta Materials vertical section on horn antenna of the present invention, refraction index profile calculates schematic diagram.In Fig. 4, antenna body is equivalent to a point source.The spherical wave that point source sends is being dispersed after Meta Materials, and the electromagnetic angle of emergence after dispersing is θ.As calculated, we can show that the distribution relation formula of Meta Materials refractive index is:
Wherein, r is the radius value of artificial metal's micro-structural distance Meta Materials central point with identical refractive index, is also in Fig. 4, apart from the distance of central axis on Meta Materials vertical section; D is the thickness of Meta Materials; Ss is the distance of the equivalent point spacing Meta Materials central point of antenna body; The refractive index value that n (0) is Meta Materials central point is also the minimum refractive index value of Meta Materials; θ is the electromagnetic angle of emergence after being dispersed by Meta Materials.
Further, due to the minimum refractive index that n (0) is Meta Materials, when n (0) is larger with free space refractive index, the electromagnetic wave that free space incides on Meta Materials can part be reflected.In such cases, also can set up impedance matching layer in Meta Materials both sides, to reduce reflection, increase gain.
Meanwhile, when the bore shape of horn antenna speaker body of the present invention changes, only need to intercept required shape on the basis of original circular design.As shown in Figure 5, in figure, when dotted portion is initial designs, the annulus distribution of refractive index and artificial metal's micro-structural, when antenna body bore face shape is rectangle, directly intercepts the rectangle of bold portion on the basis of annulus distribution.
The geometry meeting artificial metal's micro-structural that above-mentioned Meta Materials refraction index profile requires has multiple, but is all the geometry that can produce response to incident electromagnetic wave.Most typically be " work " font artificial metal micro-structural.Several artificial metal's micro-structural geometry is described below in detail.On Meta Materials, the size of artificial metal's micro-structural that each point refractive index is corresponding draws by Computer Simulation, also by manually calculating.
As shown in Figure 6, Fig. 6 can produce response to change the geometry topology pattern of artificial metal's micro-structural of the first better embodiment of Meta Materials elementary cell refractive index to electromagnetic wave.In Fig. 6, artificial metal's micro-structural is in " work " font, comprise the first vertical metal branch 1021 and this first metal branch 1021 vertical and be positioned at second metal branch 1022 at the first metal branch two ends respectively, Fig. 6 a is the derivative pattern of artificial metal's micro-structural geometry topology pattern in Fig. 6, it not only comprises the first metal branch 1021, second metal branch 1022, and every article of second metal branch two ends are also vertically installed with the 3rd metal branch 1023.
Fig. 7 can produce response to change the geometry topology pattern of artificial metal's micro-structural of the second better embodiment of Meta Materials elementary cell refractive index to electromagnetic wave.In Fig. 7, artificial metal's micro-structural is plane snowflake type, comprises orthogonal first metal branch 1021 ' and two the first metal branch 1021 ' two ends are all vertically installed with the second metal branch 1022 '; Fig. 7 a is the derivative pattern of the micro-structural of artificial metal shown in Fig. 7 geometry topology pattern, it not only comprises two the first metal branch 1021 ', four the second metal branch, 1022 ', four article of second metal branch two ends are also vertically installed with the 3rd metal branch 1023 '.Preferably, the first metal branch 1021 ' length is equal and crossing perpendicular to mid point, and the second metal branch 1022 ' length is equal and mid point is positioned at the first metal branch end points, and the 3rd metal branch 1023 ' length is equal and mid point is positioned at the second metal branch end points; Above-mentioned metal branch be arranged so that artificial metal's micro-structural is isotropism, namely in plane belonging to artificial metal's micro-structural, any direction rotates artificial metal micro-structural 90 ° and can make metal micro structure with protoplast and overlap.Adopt isotropic artificial metal's micro-structural energy simplified design, reduce interference.
In the present invention, base material can be obtained by pottery, macromolecular material, ferroelectric material, ferrite material or ferromagnetic material etc.Such as, the macromolecular material such as polytetrafluoroethylene, epoxy resin, FR4, F4b.Artificial metal's micro-structural is attached on base material by etching, plating, the methods such as quarters, photoetching, electronics quarter or ion quarter of boring.Wherein etching is preferably manufacturing process, its step is after the plane pattern designing suitable artificial metal's micro-structural, first a tinsel is integrally attached on base material, then etching machines is passed through, the chemical reaction of solvent and metal is utilized to get rid of foil parts beyond artificial metal's micro-structural predetermined pattern, remaining artificial metal's micro-structural that can obtain periodic array arrangement.
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 (9)
1. a horn antenna, is characterized in that: comprise antenna body and be close to the Meta Materials on the bore face of antenna body, and the central axis of described antenna body passes the central point of described Meta Materials; Described Meta Materials comprises base material and cycle and is arranged in multiple artificial metal's micro-structurals on base material, the rounded distribution of described Meta Materials refractive index everywhere, the refractive index of circle centre position is minimum, along with the increase of radius, refractive index increases gradually, the refractive index at same radius place is identical, and the refraction index profile of described Meta Materials meets rule:
Wherein, r is the radius value with identical refractive index; D is the thickness of Meta Materials; Ss is by the distance of the some spacing Meta Materials central point of described antenna body equivalence; N (0) is the refractive index value of described Meta Materials central point; θ is the electromagnetic angle of emergence after being dispersed by Meta Materials.
2. horn antenna as claimed in claim 1, is characterized in that: the bore face shape of described antenna body is circular, rectangle or trapezoidal.
3. horn antenna as claimed in claim 1, it is characterized in that: described multiple artificial metal's micro-structural has identical geometry, the rounded distribution on the substrate of described multiple artificial metal's micro-structural, artificial metal's microstructure size of circle centre position is minimum, along with the increase of radius, the size of artificial metal's micro-structural increases, and artificial metal's microstructure size at same radius place is identical.
4. horn antenna as claimed in claim 3, it is characterized in that: the geometry of described artificial metal's micro-structural is " work " font, comprise the first vertical metal branch and be positioned at described first metal branch two ends and perpendicular to the second metal branch of described first metal branch.
5. horn antenna as claimed in claim 4, is characterized in that: described geometry also comprises and is positioned at described second metal branch two ends and perpendicular to the 3rd metal branch of described second metal branch.
6. horn antenna as claimed in claim 3, it is characterized in that: the geometry of described artificial metal's micro-structural is plane snowflake type, comprise orthogonal two the first metal branch and be positioned at described first metal branch two ends and perpendicular to the second metal branch of described first metal branch.
7. horn antenna as claimed in claim 1, is characterized in that: described base material is macromolecular material, ceramic material, ferroelectric material, ferrite material or ferromagnetic material.
8. horn antenna as claimed in claim 7, is characterized in that: described base material is FR4 material or F4B material.
9. horn antenna as claimed in claim 1, is characterized in that: described artificial metal's micro-structural is arranged on described base material by etching, electroplating, bore quarter, photoetching, electronics quarter or ion cycle of carving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110254402.0A CN102956975B (en) | 2011-08-31 | 2011-08-31 | Horn antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110254402.0A CN102956975B (en) | 2011-08-31 | 2011-08-31 | Horn antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102956975A CN102956975A (en) | 2013-03-06 |
| CN102956975B true CN102956975B (en) | 2015-07-01 |
Family
ID=47765446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110254402.0A Active CN102956975B (en) | 2011-08-31 | 2011-08-31 | Horn antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102956975B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416725A (en) * | 2019-08-21 | 2019-11-05 | 中国安全生产科学研究院 | A kind of high gain medium electromagnetic horn |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2022188A1 (en) * | 2006-05-23 | 2009-02-11 | Intel Corporation | Millimeter-wave indoor wireless personal area network with ceiling reflector and methods for communicating using millimeter-waves |
| CN101699659A (en) * | 2009-11-04 | 2010-04-28 | 东南大学 | Lens antenna |
| CN101867094A (en) * | 2010-05-02 | 2010-10-20 | 兰州大学 | Focusing panel antenna |
-
2011
- 2011-08-31 CN CN201110254402.0A patent/CN102956975B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2022188A1 (en) * | 2006-05-23 | 2009-02-11 | Intel Corporation | Millimeter-wave indoor wireless personal area network with ceiling reflector and methods for communicating using millimeter-waves |
| CN101427422A (en) * | 2006-05-23 | 2009-05-06 | 英特尔公司 | Millimeter-wave chip-lens array antenna systems for wireless networks |
| CN101699659A (en) * | 2009-11-04 | 2010-04-28 | 东南大学 | Lens antenna |
| CN101867094A (en) * | 2010-05-02 | 2010-10-20 | 兰州大学 | Focusing panel antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102956975A (en) | 2013-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Yi et al. | 3D printed broadband transformation optics based all-dielectric microwave lenses | |
| CN102479988A (en) | Metamaterial polarization transformer | |
| CN103296483A (en) | Wave-absorbing material based on surface plasmon polaritons | |
| CN102544743B (en) | Microwave antenna | |
| CN102956975B (en) | Horn antenna | |
| CN103036029B (en) | A kind of horn antenna | |
| CN102593610B (en) | Microwave antenna | |
| CN102820552B (en) | A kind of broadband circular polarizer and antenna system | |
| CN103036026B (en) | A kind of horn antenna | |
| CN103036028B (en) | A kind of electromagnetic horn | |
| CN102769189B (en) | A kind of horn-lens antenna | |
| CN103036057B (en) | Beam separation element | |
| Chou et al. | Near-field focused radiation by two edge-coupled microstrip antenna arrays | |
| Biswas et al. | Additively manufactured Luneburg lens based conformal beamformer | |
| CN103036055B (en) | A kind of beam separation element | |
| CN103036027A (en) | Horn antenna | |
| CN102810743A (en) | Device for attenuating creeping wave on antenna surface | |
| CN102570045B (en) | Microwave antenna | |
| CN102680810B (en) | Microwave anechoic chamber experiment system | |
| CN102810766B (en) | A kind of horn antenna device | |
| CN102810765B (en) | One is just presenting horn antenna system | |
| CN103094691B (en) | A kind of electromagnetic horn | |
| CN103036056A (en) | Wave beam separating element | |
| CN102769188B (en) | Horn antenna | |
| Bosiljevac et al. | Designing horn antennas based on variable metasurface concept |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |