CN103682675A - Horn antenna - Google Patents
Horn antenna Download PDFInfo
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- CN103682675A CN103682675A CN201210316831.0A CN201210316831A CN103682675A CN 103682675 A CN103682675 A CN 103682675A CN 201210316831 A CN201210316831 A CN 201210316831A CN 103682675 A CN103682675 A CN 103682675A
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Abstract
The invention relates to a horn antenna which comprises a horn and a metamaterial sleeve, wherein the metamaterial sleeve is arranged at the opening of the horn and comprises at least one metamaterial ring layer, and the metamaterial ring layer comprises an annular substrate and a plurality of artificial microstructures attached to the surface on the outer side of the annular substrate. The refractive index of any section of each metamaterial ring layer is gradually increased from inside to outside in a direction vertical to the aperture surface of the horn opening. According to the horn antenna, the metamaterial sleeve with the gradually-varied refractive indexes is arranged at the opening of the horn, so that the amplitude distribution of a wavefront electric field is more uniform, therefore the utilization efficiency of the aperture surface of the horn antenna opening is increased, and the far field gain of the horn antenna is increased.
Description
Technical field
The present invention relates to the communications field, more particularly, relate to a kind of horn antenna.
Background technology
Horn antenna, the trumpet-shaped antenna of waveguide terminal flare up, because horn antenna is simple in structure and directional diagram is easy to control, is typically used as medium directivity antenna, and as standard horn, modal is the feed that is used as reflecting surface; That horn antenna has is simple in structure, cost is low, gain advantages of higher, in engineering, be widely used, but at some special dimension, due to condition restriction such as operational environment, carrying equipments, often require further to improve gain performance, traditional way is reflecting surface or the lens that add phase calibration, but these structures are all curved-surface structures, is processing, installing a lot of inconvenience.
Summary of the invention
The technical problem to be solved in the present invention is that the defect large for existing horn antenna difficulty of processing, cost is high, provides a kind of horn antenna simple in structure.
The technical solution adopted for the present invention to solve the technical problems is: a kind of horn antenna, comprise loudspeaker and be arranged on the super material sleeve of loudspeaker opening part, described super material sleeve comprises at least one super material circular layer, described super material circular layer comprises ring-type substrate and is attached to a plurality of artificial micro-structural on ring-type substrate outer surface, and the refractive index of the arbitrary section of each super material circular layer all increases from inside to outside gradually along the direction perpendicular to horn mouth diametric plane.
Further, each super material circular layer has the section of identical shaped and identical refraction index profile.
Further, described super material sleeve comprises a plurality of super material circular layer of order stack.
Further, the described super material sleeve arbitrary section parallel with the bore face of loudspeaker has single refraction index profile.
Further, the section configuration of described super material sleeve is right-angled trapezium or rectangle.
Further, described artificial micro-structural is metal micro structure, described metal micro structure is comprised of one or more metal wire, described metal wire is copper cash, silver-colored line or aluminum steel, and a plurality of artificial micro-structural on described ring-type substrate obtains by etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method.
Further, a plurality of artificial micro-structural on described ring-type substrate is obtained by the differentiation that is the topological pattern of the alabastrine metal micro structure of plane, the described alabastrine metal micro structure of plane that is has the first metal wire and the second metal wire of mutually vertically dividing equally, described the first metal wire is identical with the length of the second metal wire, described the first metal wire two ends are connected with two the first metal branches of equal length, described the first metal wire two ends are connected on the mid point of two the first metal branches, described the second metal wire two ends are connected with two the second metal branches of equal length, described the second metal wire two ends are connected on the mid point of two the second metal branches, described the first metal branch and the second metal branch equal in length.
Further, described each the first metal branch of the alabastrine metal micro structure of plane and the two ends of each the second metal branch of being are also connected with identical San metal branch, and the mid point of corresponding San metal branch is connected with the end points of the first metal branch and the second metal branch respectively.
Further, described the first metal wire and the second metal wire that is the alabastrine metal micro structure of plane is provided with two kinks, described in be the alabastrine metal micro structure of plane and all overlap with former figure with intersection point figure to any direction 90-degree rotation in metal micro structure plane of living in of the second metal wire around the first metal wire.
Further, in described a plurality of super material circular layer, in outermost super its outer surface of material circular layer, be provided with protective layer.
According to horn antenna of the present invention, the super material sleeve of gradually changed refractive index is added to the opening part at standard horn, can be so that the amplitude distribution of wavefront electric field be comparatively even, thus the utilization ratio of horn antenna bore face improved, improve the far gain of horn antenna.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the structural representation of the horn antenna of first embodiment of the invention;
Fig. 2 is the structural representation of its super material sleeve of the horn antenna shown in Fig. 1;
Fig. 3 is its section structure schematic diagram of super material sleeve shown in Fig. 2;
Fig. 4 is the structural representation of the horn antenna of second embodiment of the invention;
Fig. 5 is the schematic diagram of the topological pattern of the alabastrine metal micro structure of plane of the present invention;
Fig. 6 is a kind of derived structure of the alabastrine metal micro structure of plane shown in Fig. 5;
Fig. 7 is a kind of distressed structure of the alabastrine metal micro structure of plane shown in Fig. 5;
Fig. 8 is the far field emulation schematic diagram of the horn antenna of first embodiment of the invention.
Embodiment
As shown in Figures 1 to 4, horn antenna according to the present invention comprises loudspeaker LB and is arranged on the super material sleeve TT of loudspeaker opening part, described super material sleeve TT comprises at least one super material circular layer 10, described super material circular layer 10 comprises ring-type substrate 1 and is attached to a plurality of artificial micro-structural 2 on ring-type substrate 1 outer surface, and the refractive index of each super material circular layer 10 arbitrary section all increases from inside to outside gradually along the direction perpendicular to horn mouth diametric plane.Described super material sleeve TT can be set on loudspeaker opening, also can be bonded on the lateral wall of loudspeaker opening by glue.
In the present invention, described ring-type substrate 1 is made by F4B composite material, FR-4 composite material, polytetrafluoroethylene or polystyrene.For example, the electrical insulating property of polytetrafluoroethylene is very good, therefore can electromagnetic electric field not produced and be disturbed, and have good chemical stability, corrosion resistance, long service life.
In the present invention, the thickness of described ring-type substrate is 0.1-2mm, and the thickness of described artificial micro-structural is 0.01-0.5mm.For example, the thickness of ring-type substrate is 1mm, and the thickness of artificial micro-structural is 0.018mm.
In the present invention, preferably, described artificial micro-structural 2 is metal micro structure, described metal micro structure is comprised of one or more metal wire, described metal wire is copper cash, silver-colored line or aluminum steel, and a plurality of artificial micro-structural on described ring-type substrate 1 obtains by etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method.
Super material sleeve of the present invention, for example, can make by the following method:
(1) at the outer surface copper membrane of ring-type substrate;
(2) by techniques such as etchings, remove unwanted part copper film, obtained a plurality of artificial micro-structurals and arranged in the plane of ring-type substrate outer surface, also formed a super material circular layer;
(3) as required, by a super material circular layer, form super material sleeve, or by the bonding super material sleeve that obtains multilayer of PUR for a plurality of super material circular layers.The material of PUR is preferably consistent with the material of super material circular layer.
In the present invention, preferably, the differentiation of the topological pattern that is the alabastrine metal micro structure of plane as shown in Figure 5 of a plurality of artificial micro-structural on described ring-type substrate 1 obtains.The topological pattern that is the metal micro structure shown in Fig. 5 is the basic flat topology pattern that is the alabastrine metal micro structure of plane, and the topological pattern of all metal micro structures on same base material develops and obtains by the pattern shown in Fig. 5.
As shown in Figure 5, the described alabastrine metal micro structure of plane that is has the first metal wire J1 and the second metal wire J2 mutually vertically dividing equally, described the first metal wire J1 is identical with the length of the second metal wire J2, described the first metal wire J1 two ends are connected with two the first F1 of metal branch of equal length, described the first metal wire J1 two ends are connected on the mid point of two the first F1 of metal branch, described the second metal wire J2 two ends are connected with two the second F2 of metal branch of equal length, described the second metal wire J2 two ends are connected on the mid point of two the second F2 of metal branch, described the first F1 of metal branch and the second F2's of metal branch is equal in length.
Fig. 6 is a kind of derived structure of the alabastrine metal micro structure of plane shown in Fig. 5.Its two ends at each first F1 of metal branch and each the second F2 of metal branch are all connected with the identical San metal F3 of branch, and the mid point of the corresponding San metal F3 of branch is connected with the end points of the first F1 of metal branch and the second F2 of metal branch respectively.The rest may be inferred, and the present invention can also derive the metal micro structure of other form.Equally, shown in Fig. 6, be basic flat topology pattern.
Fig. 7 is a kind of distressed structure of the alabastrine metal micro structure of plane shown in Fig. 5, the metal micro structure of this kind of structure, the first metal wire J1 and the second metal wire J2 are not straight lines, but folding line, the first metal wire J1 and the second metal wire J2 are provided with two kink WZ, but the first metal wire J1 remains vertical with the second metal wire J2 to be divided equally, by arrange kink towards with the relative position of kink on the first metal wire and the second metal wire, the figure to any direction 90-degree rotation all overlaps with former figure around the axis perpendicular to the first metal wire and the second metal wire intersection point to make the metal micro structure shown in Fig. 7.In addition, can also have other distortion, for example, the first metal wire J1 and the second metal wire J2 all arrange a plurality of kink WZ.Equally, shown in Fig. 7, be basic flat topology pattern.
Known refractive index
wherein μ is relative permeability, and ε is relative dielectric constant, and μ and ε are collectively referred to as electromagnetic parameter.In the situation that the material of ring-type substrate is selected, utilize the arbitrary value (within the specific limits) that only can realize refractive index to the artificial micro-structural of electric field response, under this horn antenna centre frequency, utilize simulation software, as CST, MATLAB, COMSOL etc., by emulation, obtain the situation that the dielectric constant (refractive index) of the artificial micro-structural (the alabastrine metal micro structure of plane as shown in Figure 5) of a certain given shape changes along with the refractive index variable of topological pattern, can list data one to one, the super material circular layer that the specific refractive index that can design us needs distributes.
As shown in Figure 1 to Figure 3, be the horn antenna of first embodiment of the invention.Described loudspeaker LB is pyramid loudspeaker, and described super material sleeve TT forms (bonding by glue each other) by three super material circular layer 10 order stacks, in outermost super material circular layer 10 its outer surfaces, is provided with protective layer 20.Described protective layer is PS plastics, PET plastics or HIPS plastics, and the thickness of described protective layer is 0.1-2mm.For example, the HIPS plastics that protective layer is 0.1mm.
In the present embodiment, each super material circular layer 10 has the section of identical shaped and identical refraction index profile, and the described super material sleeve TT arbitrary section parallel with the bore face of loudspeaker has single refraction index profile, super material sleeve has identical refractive index diametrically, and described super material sleeve TT arbitrary section parallel with the bore face of loudspeaker is Q-RING.
As a concrete example, the outermost super material circular layer 10 of take is example, has artificial micro-structural arrangement form as shown in Figure 2 on the outer surface of its ring-type substrate.
In Fig. 2, the described a plurality of artificial micro-structurals on substrate have identical topological pattern, and the topological pattern of the metal micro structure shown in Fig. 5 is the basic flat topology pattern that is the alabastrine metal micro structure of plane.The refractive index that realizes the arbitrary section of super material circular layer by changing the length of the first metal branch and the second metal branch increases from inside to outside gradually along the direction perpendicular to horn mouth diametric plane.The first metal branch equates with the second metal branch length, such the first metal branch or the second metal branch head, the effective dielectric constant that itself and ring-type substrate form is just larger, in the situation that magnetic permeability is constant, be equivalent to, the first metal branch or the second metal branch head equivalent refractive index that this artificial micro-structural and ring-type substrate form is larger.
In the present embodiment, as shown in Figure 3, the section of described each super material circular layer 10 is right-angled trapezium, and the section DM shape of the described super material sleeve being formed by three super material circular layer 10 order stacks is also right-angled trapezium.
According to the first embodiment, to thering is the horn antenna of following parameter, carry out analog simulation test:
The centre frequency of horn antenna is 18.356GHZ;
As shown in Figure 3, the top SB of the right-angled trapezium section of super material sleeve TT is 19mm, and XB is 3mm below, and high (i.e. the radial thickness HD of super material sleeve) is 3.054mm.
Super material sleeve TT is 1.56 near its refractive index of section of horn mouth diametric plane, and along the direction perpendicular to horn mouth diametric plane from inside to outside, the refractive index of each section increases gradually, and the refractive index of outermost section is 8.
As shown in Figure 8, be the far-field pattern of this horn antenna, as can be seen from Figure 8, the horn antenna of the present embodiment is compared to standard horn, and its gain has improved.
As shown in Figure 4, be the horn antenna of second embodiment of the invention.Described loudspeaker LB is conical horn, and described super material sleeve TT is sequentially superposeed and formed (bonding by glue each other) by three super material circular layers, in outermost super its outer surface of material circular layer, is provided with protective layer 20.Described protective layer is PS plastics, PET plastics or HIPS plastics, and the thickness of described protective layer is 0.1-2mm.For example, the HIPS plastics that protective layer is 0.1mm.
In the present embodiment, each super material circular layer has the section of identical shaped and identical refraction index profile, and the described super material sleeve TT arbitrary section parallel with the bore face of loudspeaker has single refraction index profile, super material sleeve has identical refractive index diametrically, and described super material sleeve TT arbitrary section parallel with the bore face of loudspeaker is annulus.
In the present embodiment, the section of described each super material circular layer is right-angled trapezium, by sequentially the superpose section configuration of the described super material sleeve that forms of three super material circular layers, is also right-angled trapezium.
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; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not departing from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, within these all belong to protection of the present invention.
Claims (10)
1. a horn antenna, it is characterized in that, comprise loudspeaker and be arranged on the super material sleeve of loudspeaker opening part, described super material sleeve comprises at least one super material circular layer, described super material circular layer comprises ring-type substrate and is attached to a plurality of artificial micro-structural on ring-type substrate outer surface, and the refractive index of the arbitrary section of each super material circular layer all increases from inside to outside gradually along the direction perpendicular to horn mouth diametric plane.
2. horn antenna according to claim 1, is characterized in that, each super material circular layer has the section of identical shaped and identical refraction index profile.
3. horn antenna according to claim 2, is characterized in that, described super material sleeve comprises a plurality of super material circular layer of order stack.
4. horn antenna according to claim 3, is characterized in that, the described super material sleeve arbitrary section parallel with the bore face of loudspeaker has single refraction index profile.
5. horn antenna according to claim 4, is characterized in that, the section configuration of described super material sleeve is right-angled trapezium or rectangle.
6. horn antenna according to claim 1, it is characterized in that, described artificial micro-structural is metal micro structure, described metal micro structure is comprised of one or more metal wire, described metal wire is copper cash, silver-colored line or aluminum steel, and a plurality of artificial micro-structural on described ring-type substrate obtains by etching, plating, brill quarter, photoetching, electronics is carved or ion is carved method.
7. horn antenna according to claim 6, it is characterized in that, a plurality of artificial micro-structural on described ring-type substrate is obtained by the differentiation that is the topological pattern of the alabastrine metal micro structure of plane, the described alabastrine metal micro structure of plane that is has the first metal wire and the second metal wire of mutually vertically dividing equally, described the first metal wire is identical with the length of the second metal wire, described the first metal wire two ends are connected with two the first metal branches of equal length, described the first metal wire two ends are connected on the mid point of two the first metal branches, described the second metal wire two ends are connected with two the second metal branches of equal length, described the second metal wire two ends are connected on the mid point of two the second metal branches, described the first metal branch and the second metal branch equal in length.
8. horn antenna according to claim 7, it is characterized in that, described each the first metal branch of the alabastrine metal micro structure of plane and the two ends of each the second metal branch of being are also connected with identical San metal branch, and the mid point of corresponding San metal branch is connected with the end points of the first metal branch and the second metal branch respectively.
9. the super material antenna of cassegrain type according to claim 7, it is characterized in that, described the first metal wire and the second metal wire that is the alabastrine metal micro structure of plane is provided with two kinks, described in be the alabastrine metal micro structure of plane and all overlap with former figure with intersection point figure to any direction 90-degree rotation in metal micro structure plane of living in of the second metal wire around the first metal wire.
10. horn antenna according to claim 3, is characterized in that, in described a plurality of super material circular layers, in outermost super its outer surface of material circular layer, is provided with protective layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210316831.0A CN103682675B (en) | 2012-08-31 | 2012-08-31 | A kind of electromagnetic horn |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210316831.0A CN103682675B (en) | 2012-08-31 | 2012-08-31 | A kind of electromagnetic horn |
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| Publication Number | Publication Date |
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| CN103682675A true CN103682675A (en) | 2014-03-26 |
| CN103682675B CN103682675B (en) | 2018-04-17 |
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| CN201210316831.0A Active CN103682675B (en) | 2012-08-31 | 2012-08-31 | A kind of electromagnetic horn |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733866A (en) * | 2015-03-30 | 2015-06-24 | 东南大学 | Packaging sandwich antenna for gap embedded phase position calibration |
| CN104733864A (en) * | 2015-03-30 | 2015-06-24 | 东南大学 | Planar horn antenna for gap embedded phase position amplitude calibration |
| CN104733867A (en) * | 2015-03-30 | 2015-06-24 | 东南大学 | Three-dimensional package surface antenna with calibrated gap phase amplitude |
| CN106099377A (en) * | 2016-08-08 | 2016-11-09 | 中国电子科技集团公司第五十四研究所 | A kind of Meta Materials pyramid loudspeaker feed radiating elliptical beam |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090213022A1 (en) * | 2008-02-25 | 2009-08-27 | Lockheed Martin Corporation | Horn antenna, waveguide or apparatus including low index dielectric material |
| CN102110890A (en) * | 2011-02-11 | 2011-06-29 | 中国科学院光电技术研究所 | High-gain horn antenna based on inhomogeneous medium |
| CN202231156U (en) * | 2011-07-26 | 2012-05-23 | 深圳光启高等理工研究院 | Feedback type microwave antenna |
-
2012
- 2012-08-31 CN CN201210316831.0A patent/CN103682675B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090213022A1 (en) * | 2008-02-25 | 2009-08-27 | Lockheed Martin Corporation | Horn antenna, waveguide or apparatus including low index dielectric material |
| CN102110890A (en) * | 2011-02-11 | 2011-06-29 | 中国科学院光电技术研究所 | High-gain horn antenna based on inhomogeneous medium |
| CN202231156U (en) * | 2011-07-26 | 2012-05-23 | 深圳光启高等理工研究院 | Feedback type microwave antenna |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104733866A (en) * | 2015-03-30 | 2015-06-24 | 东南大学 | Packaging sandwich antenna for gap embedded phase position calibration |
| CN104733864A (en) * | 2015-03-30 | 2015-06-24 | 东南大学 | Planar horn antenna for gap embedded phase position amplitude calibration |
| CN104733867A (en) * | 2015-03-30 | 2015-06-24 | 东南大学 | Three-dimensional package surface antenna with calibrated gap phase amplitude |
| CN104733864B (en) * | 2015-03-30 | 2018-04-24 | 东南大学 | Gap embeds the planar horn antenna of phase amplitude calibration |
| CN106099377A (en) * | 2016-08-08 | 2016-11-09 | 中国电子科技集团公司第五十四研究所 | A kind of Meta Materials pyramid loudspeaker feed radiating elliptical beam |
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| CN103682675B (en) | 2018-04-17 |
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Effective date of registration: 20210409 Address after: 2 / F, software building, No.9, Gaoxin Zhongyi Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 18B, building a, CIC international business center, 1061 Xiangmei Road, Futian District, Shenzhen, Guangdong 518034 Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |
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