CN105305048B - A kind of super skin antenna of wide angle circular polarisation - Google Patents
A kind of super skin antenna of wide angle circular polarisation Download PDFInfo
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- CN105305048B CN105305048B CN201510710926.4A CN201510710926A CN105305048B CN 105305048 B CN105305048 B CN 105305048B CN 201510710926 A CN201510710926 A CN 201510710926A CN 105305048 B CN105305048 B CN 105305048B
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- 239000002184 metal Substances 0.000 claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims abstract description 14
- 230000000737 periodic effect Effects 0.000 claims abstract description 3
- 230000010287 polarization Effects 0.000 abstract description 23
- 230000005855 radiation Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005388 cross polarization Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
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Abstract
The present invention provides a kind of super skin antenna of wide angle circular polarisation, including super surface texture and the half wavelength dipoles sub-antenna being placed at the certain altitude of super surface texture surface；The super surface texture carries out periodic extension by some cycles respectively in the direction x and y by super surface cell and constitutes, and forms the gapless arrangement architecture of super surface cell m × n, wherein m, n are the natural number more than or equal to 2；The super surface cell is made of the metal patch of medium substrate, the earth plate being arranged on one face of medium substrate and the double-head arrow shape being arranged on another face of medium substrate.The present invention can generate circular polarization radiation wave in dipole antenna upper space, and the size by changing super surface cell and dipole antenna and vertical range between the two, super skin antenna work can be made in different frequency ranges, it is simple with structure, frequency is easily adjusted, circular polarisation angle is wide, can reduce the series of advantages such as radar cross section.
Description
Technical field
The present invention relates to a kind of antenna structure more particularly to a kind of super skin antenna structures of wide angle circular polarisation.
Background technique
Meta Materials are usually periodically or aperiodically to arrange the sub-wavelength basic unit with geometry in particular
Constituted Novel manual electromagnetic material is arranged, there is property not available for material in nature.Super surface can be equivalent to two
Meta Materials are tieed up, there is very strong ability of regulation and control to electromagnetic wave, polarization conversion, the functions such as polarization rotation may be implemented.Moreover,
Super surface is applied in Antenna Design, traditional antenna can be improved in bandwidth of operation, directionality, radiation efficiency, gain etc. is more
The performance of a aspect, it is this super surface texture is combined to designed new antenna with traditional antenna to be properly termed as super surface day
Line.Chung, K. et al. proposed to tie the micro-strip paster antenna of traditional probe feed and the super surface of square loop shape in 2011
Close, at the same realize paster antenna impedance bandwidth and in terms of performance raising.This is completely new for super skin antenna
Concept generate since then, and cause the great interest of researcher.
Circular polarized antenna is because its stability in signal reception is just widely used in radio frequency identification, radar, wirelessly
Local area network, in satellite communication and sensor-based system.Traditional circular polarized antenna usually requires to add in the feed section of linear polarized antenna
The orthogonal line polarization wave of constant amplitude is generated to design, to generate circular polarization radiation, this increases not only setting for circular polarized antenna
Count difficulty, it is also possible to so that entire antenna structure is more complicated.The application of super surface texture can simplify setting for circular polarized antenna
Meter.On the basis of above-mentioned square loop shape super surface texture, someone devises a kind of super surface texture, and unit includes one
One diagonal line metal band of rectangular-shaped loops shape metal patch and rectangle inside, surpasses surface texture for this and is placed on source antenna
Nearby the line polarization wave that source antenna radiates can be converted into circularly polarised wave.There are also research groups to utilize orthogonal I-shaped super surface
Realize the conversion of the linear polarization in broadband range to circular polarisation.
A series of research achievements show to realize that circular polarisation, especially broadband circular polarisation are relatively easy to using super surface
, but wide angle circular polarisation is almost absent realization.
Summary of the invention
The present invention designs a kind of wide angle entelechy for using the combination of super surface texture and traditional half wavelength dipoles sub-antenna
Change super skin antenna, while realizing the function of reducing radar cross section.
The technical scheme of the present invention is realized as follows:
A kind of super skin antenna of wide angle circular polarisation, it is characterised in that: including super surface texture and be placed on super surface
Half wavelength dipoles sub-antenna right above structure at certain altitude；
The super surface texture carries out periodic extension by some cycles respectively in the direction x and y by super surface cell and constitutes, shape
At the gapless arrangement architecture of super surface cell m × n, wherein m, n are the natural number more than or equal to 2；The super surface cell
By medium substrate, the earth plate being arranged on one face of medium substrate and the double-head arrow shape being arranged on another face of medium substrate
The metal patch of shape forms；The super surface cell cross section is square；Arrangement period of the super surface cell in the direction x and y
It is identical, number of the arrangement is equal；Double-head arrow shaped metal patch is by symmetrical " L " type gold of intermetallic metal band and metal band both ends
Belong to patch composition, entire metal patch structure is along the diagonal line placement of super surface cell and symmetrical about two diagonal lines.
One aspect of the present invention utilizes radiation wave reflection of the super surface texture by dipole antenna along the direction-z, and changes reflection
The polarization mode of wave is converted into y line polarization wave by x line polarization wave；On the other hand using dipole antenna and super surface texture it
Between distance so that being generated between the polarized direct wave of the direction+z x along the polarized back wave of the direction+z y and dipole antenna
90 ° of phase difference.It is characterized by comprising super surface texture and be placed on right above super surface texture at certain altitude half
Wave dipole sub-antenna.
The constant amplitude quadrature linear polarization wave for being 90 ° for phase difference, can produce pure circle polarized wave；The super table that the present invention uses
Face structure can be tied by dipole antenna along the radiated wave near total reflection in the direction-z by adjusting dipole antenna and super surface
The distance between structure can make the phase difference between back wave and the direct wave of dipole antenna just near 90 °, in turn
The super skin antenna can generate circularly polarised wave of the axis than the very high purity close to 0dB under some frequency, in some frequency model
The circularly polarised wave that meets engine request of the interior generation axis than being less than 3dB is enclosed, good circular polarisation function is realized；
The super surface texture that the present invention uses can realize that the efficient polarization of line polarization wave turns at C-band (4GHz~8GHz)
It changes；Furthermore since super surface texture realizes that effective working frequency range of polarization conversion is controlled by the geometric parameter of super surface cell, increase
Size that is big or reducing super surface cell can make polarization conversion frequency range to low frequency or high-frequency mobile, so super skin antenna has
There is frequency easily to adjust characteristic.Number of the arrangement of the super surface cell in the direction x and y can be according to working frequency range and super surface cell size
Flexibly determine.
The present invention can reduce radar cross section simultaneously, further expand the super skin antenna of wide angle circular polarisation
Application range, while a kind of completely new thinking and scheme are provided for the design of new antenna.
The invention has the following beneficial effects:
On the one hand 1. the super skin antenna of wide angle circular polarisation of the invention utilizes the polarization conversion property of super surface texture,
Realize the linear polarization conversion of dipole antenna back wave；On the other hand intersecting using dipole antenna direct wave and back wave
Polarization generates circular polarization radiation wave in dipole antenna upper space, realizes the conversion of linear polarized antenna to circular polarized antenna.This
The super skin antenna of kind need not design additional feed structure to generate the orthogonal line polarization wave of constant amplitude, simplify circular polarized antenna
Design process shortens the design cycle of circular polarized antenna.
2. structure is simple: the present invention includes super surface texture and the half wavelength dipoles that are placed on right above super surface texture
Sub-antenna, super surface texture are directly arranged in a combination by mn identical super surface cell gaplesss in the way of m × n, structure
Make simple and easy processing.
3. strong innovation, technology is perspective good: the present invention utilizes the combination of conventional dipole sub-antenna and super surface texture, real
Show the conversion of linear polarized antenna to circular polarized antenna, can effectively reduce the radar cross section of structure, strong innovation, both at home and abroad
It has no such antenna structure, has expanded the application range of the circular polarized antenna, have good technology perspective.
4. circular polarisation angle is wide, performance is good: the present invention can realize circular polarized antenna function in 5.12~5.53GHz frequency range；
At frequency 5.5GHz, axis than the angular range less than 3dB can achieve 123 ° (phi=0 °, xz be flat on two principal planes of antenna
Face) and 90 ° (phi=90 °, yz plane), circular polarisation angle is wide；At centre frequency 5.35GHz, greatest irradiation direction axis ratio is
0.25dB, circular polarisation purity is high, performance are good；The corresponding function of terahertz wave band equally can be achieved in the geometric dimension for changing structure.
Detailed description of the invention:
Fig. 1 is the 3-D view of super skin antenna；
Fig. 2 (a) is the substrate top structural schematic diagram of super surface cell；
Fig. 2 (b) is the base plate bottom structural schematic diagram of super surface cell；
Fig. 3 is change curve of the reflection coefficient about frequency of super surface texture；
Fig. 4 is the S parameter of super skin antenna；
Fig. 5 (a) is super skin antenna greatest irradiation direction axis than the change curve about frequency；
Fig. 5 (b) is the axis of super two principal planes of skin antenna under 5.5GHz frequency than the change curve about theta；
Fig. 6 is the comparison of super surface texture Yu metal plate structure radar cross section.
Specific embodiment:
The implementation of technical solution is described in further detail with reference to the accompanying drawing:
Embodiment one
As shown in Figure 1, the super skin antenna of wide angle circular polarisation is made of two parts.First part is super surface texture,
Its super surface cell being square by nine identical cross sections gapless in such a way that three multiply three is arranged in a combination, along x
Period with the direction y is p=12 millimeters.Super surface cell is by medium substrate, the ground connection being arranged on one face of medium substrate
Plate and the metal patch for the double-head arrow shape being arranged on another face of medium substrate form.H=6 millimeters of dielectric substrate thickness,
Earth plate and metal patch thickness are t=0.018 millimeters.Second part is traditional half wavelength dipoles sub-antenna, length L=
It 25 millimeters, is placed on right above super surface texture, and apart from H=8 millimeters of super surface vertical height；
Embodiment two
Structure as shown in Figure 2 is super surface cell, and double-head arrow shaped metal patch is by intermetallic metal band and metal band
Symmetrical " L " the type metal patch composition in both ends, entire metal patch structure are placed and along the diagonal line of super surface cell about two
Diagonal line is symmetrical (about super surface cell central symmetry).L=10 millimeters of metal band length, w=1.2 millimeters of width,
Symmetrical d=5.7 millimeters of metal patch length, g=1 millimeters of width of " L " type in both ends.
It is illustrated in figure 3 the reflection coefficient of super surface texture, it can be found that C-band same polarization reflection coefficient is all in -15dB
Hereinafter, cross polarization reflection coefficient realizes efficient polarization conversion function close to 0dB.In addition, super surface texture realizes pole
The effective working frequency range for changing conversion is controlled by the geometric parameter of super surface cell, and the size for increasing or reducing super surface cell can be with
So that polarization conversion frequency range is to low frequency or high-frequency mobile, so that there is super skin antenna frequency easily to adjust characteristic.
According to embodiment two, the return loss that super skin antenna as shown in Figure 4 can be obtained using electromagnetic simulation software is special
Property.Within the scope of 4.89~5.7GHz of bandwidth of operation of antenna, return loss is below -10dB.
According to embodiment two, circular polarisation performance as shown in Figure 5 can be obtained using electromagnetic simulation software.Fig. 5 (a) is shown
Greatest irradiation direction axis is than the change curve about frequency, and within the scope of 5.12~5.53GHz, axis ratio is in 3dB hereinafter, this range
The as circular polarisation bandwidth of operation of antenna；At centre frequency 5.35GHz, greatest irradiation direction axis ratio is 0.25dB, circular polarisation
Purity is high, performance are good；Fig. 5 (b) is the axis of super two principal planes of skin antenna than the change curve about theta, in 5.5GHz
Locate, axis can achieve 123 ° (phi=0 °, xz plane) and 90 ° of (phi than the angular range less than 3dB on two principal planes of antenna
=90 °, yz plane), realize wide angle circular polarisation function.
According to embodiment two, reduction radar cross section function as shown in FIG. 6 can be obtained using electromagnetic simulation software.It is logical
It crosses and places super surface texture and an equal amount of common metal two kinds of feelings of hardened structure below comparison dipole antenna at same position
Monostatic RCS under condition, within the scope of 5~6GHz, the radar cross section of the hardened structure of common metal from-
19.1dBsm changes to -18.5dBsm, and as shown in phantom in Figure 6, and the radar cross section of super surface texture becomes from -25dBsm
Change to -37dBsm, is dissipated so that radar can be effectively reduced in super skin antenna within the scope of 5.12~5.53GHz of circular polarisation working frequency range
Section is penetrated, and maximum reduction is up to 10.4dB.
Claims (2)
1. a kind of super skin antenna of wide angle circular polarisation, it is characterised in that: including super surface texture and be placed on super surface knot
Half wavelength dipoles sub-antenna right above structure at certain altitude；
The super surface texture carries out periodic extension by some cycles respectively in the direction x and y by super surface cell and constitutes, and is formed super
The gapless arrangement architecture of surface cell m × n, wherein m, n are the natural number more than or equal to 2；The super surface cell is by being situated between
Matter substrate, the earth plate being arranged on one face of medium substrate and the double-head arrow shape being arranged on another face of medium substrate
Metal patch composition；The super surface cell cross section is square；Arrangement period of the super surface cell in the direction x with y be identical,
Number of the arrangement is equal；Double-head arrow shaped metal patch is by symmetrical " L " the type metal patch of intermetallic metal band and metal band both ends
Piece composition, entire metal patch structure is along the diagonal line placement of super surface cell and symmetrical about two diagonal lines.
2. a kind of super skin antenna of wide angle circular polarisation according to claim 1, it is characterised in that: the metal patch and
It is identical to be grounded plate thickness.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510710926.4A CN105305048B (en) | 2015-10-27 | 2015-10-27 | A kind of super skin antenna of wide angle circular polarisation |
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| CN201510710926.4A CN105305048B (en) | 2015-10-27 | 2015-10-27 | A kind of super skin antenna of wide angle circular polarisation |
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| CN105305048B true CN105305048B (en) | 2019-04-16 |
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106058481B (en) * | 2016-08-12 | 2019-02-01 | 电子科技大学 | The reflective polarization converter of Terahertz for surpassing surface based on Z-type |
| CN106877003A (en) * | 2017-03-22 | 2017-06-20 | 桂林电子科技大学 | A kind of reflection-type ultra wide band Terahertz polarization restructural circular polarizer |
| CN107134654A (en) * | 2017-04-21 | 2017-09-05 | 南京航空航天大学 | Double-frequency double-circularly-poantenna antenna and its performance implementation method based on the super surface of electromagnetism |
| CN108470987B (en) * | 2018-03-19 | 2024-02-02 | 南京思追特电子科技有限公司 | Half-wave conductor array and construction method thereof |
| CN108963438A (en) * | 2018-07-12 | 2018-12-07 | 西安电子科技大学 | Low radar cross section array antenna based on polarization conversion |
| CN109560373B (en) * | 2018-11-22 | 2020-11-03 | 中国人民解放军空军工程大学 | Reflective array antenna with low RCS characteristic |
| CN109818152B (en) * | 2019-03-18 | 2020-09-04 | 西安电子科技大学 | Linear-circular polarization converter based on resonant cavity super-surface |
| CN112886273B (en) * | 2021-01-18 | 2024-01-30 | 中国船舶集团有限公司第七二四研究所 | Terahertz plane transmission array polarization torsion unit |
| CN113036442B (en) * | 2021-03-04 | 2024-05-14 | 齐齐哈尔大学 | Multifunctional digital super-surface for four-channel wave front regulation and control |
| CN115441200A (en) * | 2021-06-04 | 2022-12-06 | 华为技术有限公司 | Super surface unit and design method thereof |
| CN113690597B (en) * | 2021-08-09 | 2024-03-26 | 国网江苏省电力有限公司镇江供电分公司 | Low-profile broadband circularly polarized antenna based on super surface |
| CN114421143B (en) * | 2021-12-30 | 2024-05-07 | 哈尔滨工业大学（深圳） | Flexible antenna sensor and preparation method thereof |
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| CN102479988A (en) * | 2011-03-15 | 2012-05-30 | 深圳光启高等理工研究院 | Metamaterial polarization transformer |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102479988A (en) * | 2011-03-15 | 2012-05-30 | 深圳光启高等理工研究院 | Metamaterial polarization transformer |
Non-Patent Citations (2)
| Title |
|---|
| "A Novel Dual-Band Circularly Polarized Antenna Based on Electromagnetic Band-Gap Structure";Huan Yi 等;《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》;20130926;第12卷;第1149-1152页 |
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