CN101246993B - A kind of high directional plane antenna based on one-dimensional compound grating structure - Google Patents
A kind of high directional plane antenna based on one-dimensional compound grating structure Download PDFInfo
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- CN101246993B CN101246993B CN200810034702.6A CN200810034702A CN101246993B CN 101246993 B CN101246993 B CN 101246993B CN 200810034702 A CN200810034702 A CN 200810034702A CN 101246993 B CN101246993 B CN 101246993B
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Abstract
Based on a high directional plane antenna for one-dimensional compound grating structure, relate to a kind of plane height directional antenna.Comprise monopole or the little feed of dipole, metal base plate (4), dielectric layer (3) and upper surface, it is characterized in that: upper surface is laid in dielectric layer surface by the periodic unit one dimension translation of design quantity and forms, the gap of each periodic unit by same widths and the metal grizzly bar of not same widths; Or by the not gap of same widths and the metal grizzly bar of same widths; Or to be combined by the metal grizzly bar of different in width and the gap arrangement of different in width and form.The metal grizzly bar of different in width is 1 ~ 10 kind of different in width, and the gap of different in width is 1 ~ 10 kind of different in width.The present invention reaches high directed, high-gain radiation, and directivity factor can reach D=300-400 scope, has structure simple, make easily, characteristics and advantages with low cost, is beneficial to and realizes antenna miniaturization, complanation, can be widely used in the occasion of many low profile matching requirements.
Description
Technical field
The present invention relates to a kind of plane height directional antenna, specifically refer to and can realize high directionality radiation, utilize the flat plane antenna of simple one-dimensional compound grating structure.
Background technology
In prior art, at surface car, under spacecraft etc. require the occasion of low profile, installation by adhering, conventional is slot antenna.The basic structure of this kind of antenna is that on sheet metal, fluting carrys out radiated electromagnetic wave, coaxial transmission line or waveguide feed (leaky-wave antenna can be passed through, episternites can be eliminated), and its forward radiation can be improved by the mode setting up array, but due to its structural restriction, this kind of antenna can only realize directed radiation on one face, on the other surface due to reason that antenna actual size is limited, its radiation effect is subject to the impact of edge diffraction, and its radiation does not have directionality to say; The feeding classification that this kind of antenna often adopts is waveguide feed, and this also makes this kind of antenna volume being suitable for microwave band very large, and these shortcomings all limit its application.
The flat plane antenna separately having a class to utilize electromagnetic wave resonant surface material to realize, this kind of antenna utilizes double-layer printing circuit board to be etched into, its lower surface is Copper Foil, upper surface is the periodic array of the square Copper Foil composition of rule, upper and lower surface comprises metal hole is connected, with monopole or dipole miniature antenna as feed, be placed near surface.Because this surface exists the surperficial band gap of magnetic resonance and its resonance frequency corresponding, can the episternites of suppressing antenna and secondary lobe, improve emission effciency.But, because this structure only has a Surface wave bandgap and a coordination phase reflection frequency, therefore, antenna can only in single frequency band Net long wave radiation, and the directional diagram of its radiation does not have directionality yet.For improving the directivity of this kind of antenna, individual antenna array element is placed in the cavity body structure utilizing the electromagnetic wave resonant surface of single resonant element to form by someone, realize high directivity radiation, or its upper surface is changed to two kinds of difform Copper Foil pasters (patent No. 200510024519.4) and reaches multi-band magnetic response and multi-surface wavestrip gap, reflect mutually at its surperficial coordination, surface wave suppresses and the local inhomogeneities that caused by the rotational symmetry of its quasi-periodic structure obtains high directed radiation.But no matter be cavity body structure, still utilize two kinds of difform Copper Foil pasters to realize high directed radiation, its structure all more complicated, making, fit on acquire a certain degree of difficulty, it realizes and application has considerable restraint.
Summary of the invention
The object of the invention is openly a kind of flat plane antenna that can realize high directionality radiation.This antenna is with low cost, makes simple, can be designed to the high directionality of single little feed, high-gain flat plane antenna easily, no matter antenna can significantly be improved sensitivity and detection range as receiving terminal or transmitting terminal.
For reaching above-mentioned purpose, the present invention finds to only have formation one-dimensional compound grating, just can reach high directionality of the present invention, high-gain after studying the common grating of the one dimension forming one-period unit by a grizzly bar and cutting gap.The same with the common grating of aforementioned one dimension, this kind of duplex is also periodic structure, is made up of the gap between several metal grizzly bars and grizzly bar unlike periodic unit.In each periodic unit, the feature of grizzly bar arrangement is as follows: metal grizzly bar is rectangle, and its length is all identical, but if each grizzly bar gap is identical, then the width of grizzly bar must be different; If each grizzly bar gap is different, then the width of grizzly bar can be identical; Or grill width and gap width are not identical.
Concrete structure is, comprise monopole or the little feed of dipole, metal base plate, dielectric layer and upper surface, upper surface is laid in dielectric layer surface by the periodic unit one dimension translation of design quantity and forms, the gap of each periodic unit by same widths and the metal grizzly bar of not same widths; Or by the not gap of same widths and the metal grizzly bar of same widths; Or to be combined by the metal grizzly bar of different in width and the gap arrangement of different in width and form.
Described each periodic unit is by the metal grizzly bar of two kinds of different in width, and the gap of same widths or different in width is arranged to form.
Described each periodic unit is by the metal grizzly bar of same widths, and the gap of different in width is arranged to form.
Described each periodic unit is by the metal grizzly bar of three kinds of different in width, and same widths or different in width
Gap be arranged to form.
The metal grizzly bar of described different in width is 1 ~ 10 kind of different in width, and the gap of different in width is 1 ~ 10 kind of different in width.
Effect of the present invention and advantage as follows:
1, one-dimensional compound grating structure surface of the present invention has One Dimension Periodic and translational symmetry, is made up of in each periodic unit the gap between several metal grizzly bars and grizzly bar, that is, each grizzly bar gap can be identical, and the width of grizzly bar is different; Or grill width and gap width are not identical, grizzly bar in periodic unit, gap width are different and the local inhomogeneities that causes, can with its Cycle Length respective wavelength near near field sources, regulate diffraction pattern.Specifically, select to launch, make concentration of energy in the normal direction of grating planar to reflected wave in zeroth order in single order pattern, thus reach high directed, high-gain radiation, directivity factor can reach D=300-400 scope.
2, the present invention only needs metal grizzly bar and gap width in each unit to be designed to the instructions for use of antenna or microwave circuit, commercially available double-sided printed-circuit board etches and namely can be made into, and has structure simple, makes easily, characteristics and advantages with low cost.
3, the present invention mainly utilizes one-dimensional compound grating for the modulation of near field sources, realizes antenna miniaturization, complanation so be beneficial to from structure, can be widely used in the occasion of many low profile matching requirements.
Accompanying drawing explanation
Fig. 1 is that grill width of the present invention is different, the one-dimensional compound grating structure schematic diagram that gap width is identical
Fig. 2 is the front view of the one-period unit of Fig. 1
Fig. 3 is the A direction view of Fig. 2
Fig. 4 is that Fig. 1 structure is at the E face of 9.3GHz and H surface radiation directional diagram
Fig. 5 is that in the present invention, grill width is identical, the one-dimensional compound grating structure schematic diagram that gap width is different
Fig. 6 is the front view of the one-period unit of Fig. 5
Fig. 7 is the B direction view of Fig. 6
Fig. 8 is that Fig. 5 structure is at the E face of 9.8GHz and H surface radiation directional diagram
In figure
1-A width metal grizzly bar; 2-B width metal grizzly bar; 3-I gap; 4-medium; 5-metal base plate; 6-C width metal grizzly bar; 7-II gap; 8-III gap.
Embodiment
Embodiment 1
Refer to accompanying drawing 1-3.The flat plane antenna that One Dimension Periodic translational symmetry arrangement of the present invention is formed uses commercially available double-sided printed-circuit board to etch and manufactures, the upper surface be made up of A width metal grizzly bar 1 and B width metal grizzly bar 2 and I gap 3, medium 4 below upper surface, the metal base plate 5 below medium 4 is formed.A width metal grizzly bar 1 and B width metal grizzly bar 2 two kinds of grizzly bars of upper surface are rectangular shape, long limit is all 200 millimeters, the width of the minor face of A width metal grizzly bar 1 is 20 millimeters, the width of the minor face of B width metal grizzly bar 2 is 6 millimeters, I gap 3 is 1 millimeter, thickness of dielectric layers is 1.58 millimeters, and the dielectric constant of medium is 2.65.
The dipole antenna of the homemade 11GHz of being operated in is placed on the I gap 3 between the A width metal grizzly bar 1 of above-mentioned center and B width metal grizzly bar 2, presses close to surface and measure to the antenna pattern carrying out two primary flats in H face and E face.As shown in Figure 5, the coordinate that this directional diagram adopts is linear power ratio to pattern measurement result.Can find out that it is at 9.3GHz from forward gain frequency spectrum, antenna gain reaches 20.1dB.The measurement of antenna pattern can find out the feature of its high directivity radiation, and the 3dB width in E face and H face is respectively 12 degree and 20 degree, and calculating gained directivity factor is D=300.
Embodiment 2
Refer to accompanying drawing 5-7.The flat plane antenna of the One Dimension Periodic translational symmetry arrangement formation of another kind of structure of the present invention, the same commercially available double-sided printed-circuit board etching that uses is manufactured.Metal grill width identical (C width metal grizzly bar 6) in each cycle, two kinds (II gap 7 and III gaps 8) that gap has width different.In the upper surface be made up of C width metal grizzly bar 6 and II gap 7 and III gap 8, C width metal grizzly bar 6 is rectangular shape, long limit is all 200 millimeters, the width of minor face is 6 millimeters, III gap 8 is 1 millimeter, II gap 7 is 8 millimeters, all the other structures (thickness of dielectric layers is 1.58 millimeters, and the dielectric constant of medium is 2.65) in the same manner as in Example 1.
The dipole antenna of the homemade 11GHz of being operated in is placed on the C width metal grizzly bar 6 of upper surface center, presses close to surface and measure to the antenna pattern carrying out two primary flats in H face and E face.As shown in Figure 8, the coordinate that this directional diagram adopts is linear power ratio to pattern measurement result.Can find out that it is at 9.8GHz from forward gain frequency spectrum, antenna gain reaches 22.1dB.The measurement of antenna pattern can find out the feature of its high directivity radiation, and the 3dB width in E face and H face is respectively 8 degree and 15 degree, and calculating gained directivity factor is D=370.
Claims (2)
1. the high directional plane antenna based on one-dimensional compound grating structure, comprise monopole or the little feed of dipole, metal base plate (5), dielectric layer (4) and upper surface, it is characterized in that: upper surface is laid in dielectric layer surface by the periodic unit one dimension translation of design quantity and forms, described each periodic unit is 200 millimeters by long limit, minor face is the rectangular shape metal grizzly bar (1) of 20 millimeters and long limit is 200 millimeters, minor face is the rectangular shape metal grizzly bar (2) of 6 millimeters, and gap width is that the gap (3) of the same widths of 1 millimeter is arranged to form, dielectric layer (4) thickness is 1.58 millimeters, and the dielectric constant of medium is 2.65.
2. the high directional plane antenna based on one-dimensional compound grating structure, comprise monopole or the little feed of dipole, metal base plate (5), dielectric layer (4) and upper surface, it is characterized in that: upper surface is laid in dielectric layer surface by the periodic unit one dimension translation of design quantity and forms, described each periodic unit by long limit be 200 millimeters, to be the rectangular shape metal grizzly bar (6) of 6 millimeters and width be minor face that III class gap (8), the width of 1 millimeter be that the II class gap (7) of 8 millimeters is arranged to form; Dielectric layer (4) thickness is 1.58 millimeters, and the dielectric constant of medium is 2.65.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200810034702.6A CN101246993B (en) | 2008-03-17 | 2008-03-17 | A kind of high directional plane antenna based on one-dimensional compound grating structure |
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| CN200810034702.6A CN101246993B (en) | 2008-03-17 | 2008-03-17 | A kind of high directional plane antenna based on one-dimensional compound grating structure |
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| CN101246993A CN101246993A (en) | 2008-08-20 |
| CN101246993B true CN101246993B (en) | 2015-11-25 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102236118B (en) * | 2010-05-07 | 2013-10-16 | 同济大学 | Blazed grating with planar structure |
| CN102237569A (en) * | 2010-05-07 | 2011-11-09 | 同济大学 | Highly-oriented dual-beam scanning millimeter wave panel antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5576718A (en) * | 1992-05-05 | 1996-11-19 | Aerospatiale Societe Nationale Industrielle | Thin broadband microstrip array antenna having active and parasitic patches |
| US6285325B1 (en) * | 2000-02-16 | 2001-09-04 | The United States Of America As Represented By The Secretary Of The Army | Compact wideband microstrip antenna with leaky-wave excitation |
| CN2741206Y (en) * | 2004-08-18 | 2005-11-16 | 精乘科技股份有限公司 | Plated double-frequency antenna with single output end |
-
2008
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5576718A (en) * | 1992-05-05 | 1996-11-19 | Aerospatiale Societe Nationale Industrielle | Thin broadband microstrip array antenna having active and parasitic patches |
| US6285325B1 (en) * | 2000-02-16 | 2001-09-04 | The United States Of America As Represented By The Secretary Of The Army | Compact wideband microstrip antenna with leaky-wave excitation |
| CN2741206Y (en) * | 2004-08-18 | 2005-11-16 | 精乘科技股份有限公司 | Plated double-frequency antenna with single output end |
Non-Patent Citations (2)
| Title |
|---|
| Hongqiang Li et al..Directive Metamaterial antenna using high impedance surface.《4th International Conference on Microwave and Millimeter Wave Technology Proceedings》.2004, * |
| 张冶文 等.基于一维特异材料的微带漏波空间扫描天线.《同济大学学报(自然科学版)》.2007,第35卷(第6期), * |
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