CN101246993A - High directional plane antenna based on one-dimensional compound grating structure - Google Patents
High directional plane antenna based on one-dimensional compound grating structure Download PDFInfo
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- CN101246993A CN101246993A CNA2008100347026A CN200810034702A CN101246993A CN 101246993 A CN101246993 A CN 101246993A CN A2008100347026 A CNA2008100347026 A CN A2008100347026A CN 200810034702 A CN200810034702 A CN 200810034702A CN 101246993 A CN101246993 A CN 101246993A
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Abstract
The present invention provides a high oriented plane antenna based on a one-dimension compound grating structure, which relates to a plane high oriented antenna, which comprises of monopole or dipole small feed, metal soleplate, medium layer and upper surface. Wherein, upper surface is formed by a certain number period cells moving and coating in one-dimension on medium layer, each period cell is combined by gap with identical width and metal grid strip with different metal grid strip, or gap with different width and metal grid strip with identical width, or metal grid strip with different width and gap with different width. Metal grid strip with different width has 1-10 width, gap with different width is 1-10 width. The present invention has high orientation, high plus radiation, and the direction coefficient is reach to D=300-400 range. The present invention has merits of simple structure, easy production and low cost, is convenient to realize antenna miniaturization and complanation, can be widely used in many low outline assembly acquirement situation.
Description
Technical field
The present invention relates to the high directional antenna in a kind of plane, specifically be meant and realize the high directionality radiation, utilize the flat plane antenna of simple one-dimensional compound grating structure.
Background technology
In the prior art, at surface car, spacecraft etc. require under the occasion of low profile, embedded installation, and commonly used is slot antenna.The basic structure of this class antenna is that fluting comes radiated electromagnetic wave on the sheet metal, can pass through coaxial transmission line or waveguide feed (leaky-wave antenna, can eliminate episternites), and can improve its forward radiation by the mode of setting up array, but because its structural restriction, this class antenna can only be realized directed radiation on a face, on another face owing to the limited reason of antenna actual size, its radiation effect is subjected to the influence of edge diffraction effect, and its radiation does not have directionality to say; The normal feeding classification that adopts of this class antenna is a waveguide feed, and this makes that also this class antenna volume that is suitable for microwave band is very big, and these shortcomings have all limited its application.
The flat plane antenna that other has a class to utilize electromagnetic wave resonance surfacing to realize, this class antenna is to utilize double-layer printing circuit board to be etched into, its lower surface is a Copper Foil, upper surface is the periodic array that the square Copper Foil of rule is formed, upper and lower surface is linked to each other by plated-through hole, as feed, place near surface with monopole or dipole miniature antenna.Because there is the surperficial band gap of magnetic resonance and corresponding its resonance frequency in this surface, episternites and secondary lobe that can suppressing antenna improve emission effciency.But because this structure has only a surface wave band gap and coordination reflection frequency mutually, therefore, antenna can only effectively radiation in single frequency band, and the directional diagram of its radiation does not have directionality yet.For improving the directivity of this class antenna, someone is placed on individual antenna array element in the cavity body structure of the electromagnetic wave resonance surface formation of utilizing single resonant element, realize the high directivity radiation, perhaps its upper surface is changed to two kinds of difform Copper Foil pasters (patent No. 200510024519.4) and reaches magnetic response of many bands and multilist ground roll band gap, reflect mutually at its surperficial coordination, surface wave suppresses and obtain high directed radiation by the local inhomogeneities that the rotational symmetry of its quasi-periodic structure causes.But no matter be cavity body structure, still utilize two kinds of difform Copper Foil pasters to realize high directed radiation, its structure is more complicated all, and making, fit on acquire a certain degree of difficulty, and in its realization and the application considerable restraint is arranged all.
Summary of the invention
The objective of the invention is to disclose a kind of flat plane antenna that can realize the high directionality radiation.This antenna is with low cost, makes simply, can be designed to high directionality, the high-gain flat plane antenna of single little feed 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 has only the formation one-dimensional compound grating through to by a grizzly bar and the common grating research of the one dimension back discovery that the one-period unit is formed in the cutting gap, just can reach high directionality of the present invention, high-gain.The same with the common grating of aforementioned one dimension, this class duplex also is a periodic structure, and different is that periodic unit is made of the slit between several metal grizzly bars and grizzly bar.The characteristics that grizzly bar is arranged in each periodic unit are as follows: the metal grizzly bar is rectangle, and its length is all identical, if but each grizzly bar gap is identical, and then the width of grizzly bar must have nothing in common with each other; If each grizzly bar gap difference, then the width of grizzly bar can be identical; Perhaps grill width and gap width are all inequality.
Concrete structure is, comprise the little feed of monopole or dipole, metal base plate, dielectric layer and upper surface, upper surface is tiled in the dielectric layer surface by the periodic unit one dimension translation of design quantity and constitutes, and each periodic unit is by the gap of same widths and the metal grizzly bar of width inequality; Or by the gap of width inequality and the metal grizzly bar of same widths; Or constitute by the metal grizzly bar of different in width and the gap arrangement of different in width.
Described each periodic unit is by the metal grizzly bar of two kinds of different in width, and the slit 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 slit 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
The slit be arranged to form.
The metal grizzly bar of described different in width is 1～10 kind of different in width, and the slit of different in width is 1～10 kind of different in width.
Effect of the present invention and advantage are as follows:
1, one-dimensional compound grating structure of the present invention surface has one dimension periodically and translational symmetry, is made of the slit between several metal grizzly bars and grizzly bar in each periodic unit, that is, each grizzly bar gap can be identical, and the width of grizzly bar has nothing in common with each other; Perhaps grill width and gap width are all inequality, and grizzly bar in the periodic unit, gap width is different and the local inhomogeneities that causes, can with its Cycle Length respective wavelength near near field sources, regulate diffraction pattern.Specifically be, reflected wave is selected emission in zeroth order in the single order pattern, make the normal direction of concentration of energy in grating planar, thereby reach high directed, high-gain radiation, directivity factor can reach the D=300-400 scope.
2, the present invention only need be designed to metal grizzly bar and gap width in each unit the instructions for use of antenna or microwave circuit, and etching promptly can be made on commercially available double-sided printed-circuit board, has simple in structurely, makes easily characteristics with low cost and advantage.
3, the present invention utilizes the modulation of one-dimensional compound grating 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.
Description of drawings
Fig. 1 is a grill width difference of the present invention, 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 that the A of Fig. 2 is to view
Fig. 4 is that Fig. 1 structure is at the E of 9.3GHz face and H surface radiation directional diagram
Fig. 5 is identical for grill width among the present invention, 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 that the B of Fig. 6 is to view
Fig. 8 is that Fig. 5 structure is at the E of 9.8GHz face and H surface radiation directional diagram
Among the figure
1-A width metal grizzly bar; 2-B width metal grizzly bar; The 3-I slit; The 4-medium; The 5-metal base plate; 6-C width metal grizzly bar; The 7-II slit; The 8-III slit.
Embodiment
See also accompanying drawing 1-3.The flat plane antenna that one dimension cycle translation symmetric arrays of the present invention constitutes uses commercially available double-sided printed-circuit board etching to manufacture, the upper surface that constitutes by A width metal grizzly bar 1 and B width metal grizzly bar 2 and I slit 3, metal base plate 5 below the following medium 4 of upper surface, medium 4 constitutes.The A width metal grizzly bar 1 of upper surface and 2 two kinds of grizzly bars of B width metal grizzly bar 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 slit 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 A width metal grizzly bar 1 and the I slit 3 between the B width metal grizzly bar 2 of above-mentioned center, presses close to the antenna pattern measurement that two primary flats of H face and E face are carried out on the surface.The pattern measurement result as shown in Figure 5, the coordinate that this directional diagram adopts is a linear power ratio.It is at 9.3GHz as can be seen from the forward gain frequency spectrum, and antenna gain reaches 20.1dB.The measurement of antenna pattern is the characteristics of its high directivity radiation as can be seen, and the 3dB width of E face and H face is respectively 12 degree and 20 degree, and calculating the gained directivity factor is D=300.
Embodiment 2
See also accompanying drawing 5-7.The flat plane antenna that the one dimension cycle translation symmetric arrays of another kind of structure of the present invention constitutes uses commercially available double-sided printed-circuit board etching to manufacture equally.Metal grill width identical (C width metal grizzly bar 6) in each cycle, there is width different two kinds (II slit 7 and III slits 8) in the gap.In the upper surface that constitutes by C width metal grizzly bar 6 and II slit 7 and III slit 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 slit 8 is 1 millimeter, II slit 7 is 8 millimeters, among all the other structures and the embodiment 1 identical (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 C width metal grizzly bar 6 of upper surface center, presses close to the antenna pattern measurement that two primary flats of H face and E face are carried out on the surface.The pattern measurement result as shown in Figure 8, the coordinate that this directional diagram adopts is a linear power ratio.It is at 9.8GHz as can be seen from the forward gain frequency spectrum, and antenna gain reaches 22.1dB.The measurement of antenna pattern is the characteristics of its high directivity radiation as can be seen, and the 3dB width of E face and H face is respectively 8 degree and 15 degree, and calculating the gained directivity factor is D=370.
Claims (8)
1. high directional plane antenna based on one-dimensional compound grating structure, comprise the little feed of monopole or dipole, metal base plate (5), dielectric layer (4) and upper surface, it is characterized in that: upper surface is tiled in the dielectric layer surface by the periodic unit one dimension translation of design quantity and constitutes, and each periodic unit is by the gap of same widths and the metal grizzly bar of width inequality; Or by the gap of different in width and the metal grizzly bar of same widths; Or constitute by the metal grizzly bar of different in width and the gap arrangement of different in width.
2. a kind of high directional plane antenna according to claim 1 based on one-dimensional compound grating structure, it is characterized in that: described each periodic unit is by the metal grizzly bar of A width metal stripes (1) and (2) two kinds of different in width of B width metal stripes, and the I slit (3) of same widths is arranged to form.
3. a kind of high directional plane antenna based on one-dimensional compound grating structure according to claim 1 is characterized in that: described each periodic unit is by a kind of metal grizzly bar of same widths, and the slit of different in width is arranged to form.
4. a kind of high directional plane antenna according to claim 1 based on one-dimensional compound grating structure, it is characterized in that: described each periodic unit is by the metal grizzly bar of A width metal stripes (1) and (2) two kinds of different in width of B width metal stripes, and the slit of different in width is arranged to form.
5. a kind of high directional plane antenna according to claim 1 based on one-dimensional compound grating structure, it is characterized in that: described each periodic unit is by the metal grizzly bar of A width metal stripes (1), B width metal stripes (2) and (5) three kinds of different in width of C width metal stripes, and the slit of same widths is arranged to form.
6. a kind of high directional plane antenna according to claim 1 based on one-dimensional compound grating structure, it is characterized in that: described each periodic unit is by the metal grizzly bar of A width metal stripes (1), B width metal stripes (2) and (5) three kinds of different in width of C width metal stripes, and the gap is the I slit (3) of different in width, or II slit (7), or III slit (8) are arranged to form.
7. a kind of high directional plane antenna based on one-dimensional compound grating structure according to claim 1 is characterized in that: the metal grizzly bar of described different in width is 1～10 kind of different in width.
8. a kind of high directional plane antenna based on one-dimensional compound grating structure according to claim 1 is characterized in that: the slit of described different in width is 1～10 kind of different in width.
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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 true CN101246993A (en) | 2008-08-20 |
| CN101246993B CN101246993B (en) | 2015-11-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102236118A (en) * | 2010-05-07 | 2011-11-09 | 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 (1)
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2008
- 2008-03-17 CN CN200810034702.6A patent/CN101246993B/en active Active
Patent Citations (1)
| 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 |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102236118A (en) * | 2010-05-07 | 2011-11-09 | 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 |
| CN102236118B (en) * | 2010-05-07 | 2013-10-16 | 同济大学 | Blazed grating with planar structure |
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| CN101246993B (en) | 2015-11-25 |
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