CN105958191B - Dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure - Google Patents
Dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure Download PDFInfo
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- CN105958191B CN105958191B CN201610271864.6A CN201610271864A CN105958191B CN 105958191 B CN105958191 B CN 105958191B CN 201610271864 A CN201610271864 A CN 201610271864A CN 105958191 B CN105958191 B CN 105958191B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
- H01Q15/004—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective using superconducting materials or magnetised substrates
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Abstract
The present invention provides a kind of dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure, the medium substrate composition stacked using bilayer, paster antenna including being printed on upper layer medium substrate upper surface, it is printed on the metal floor of layer dielectric base lower surface, it is printed on the artificial magnetic conductor reflecting plate of layer dielectric upper surface of base plate, and four coaxial feed probes from layer dielectric base lower surface insertion artificial magnetic conductor reflecting plate and upper layer medium substrate, four coaxial feed probes are connect with cross paster antenna；The paster antenna is cross-shaped configuration, and the artificial magnetic conductor reflecting plate is divided into several not of uniform size and the setting that is centrosymmetric artificial magnetic conductor units, and each artificial magnetic conductor unit is rectangular metal patch.The present invention is able to achieve dual polarization, high-gain, high efficiency, the radiation characteristic of high isolation.
Description
Technical field
The present invention relates to a kind of microstrip antenna, especially a kind of dual polarization height based on aperiodic Artificial magnetic conductor structure increases
Beneficial mimo antenna.
Background technique
In recent years, artificial magnetic conductor was one of the hot spot of microwave and millimeter wave area research.Using it with unique table
Surface wave band gap properties and to plane wave with phase reflection characteristic, can effectively improve the performance of antenna.F.Yang with
Artificial magnetic conductor structure is applied to around microstrip antenna by Y.Rahmat-Samii et al., to inhibit the propagation of surface wave, mentions
The gain of high antenna reduces episternites.Meanwhile as the reflecting surface of dipole antenna and helical coil antenna, day can be made
Line is close to Artificial magnetic conductor structure surface, realizes low profile antenna.In addition, A.Foroozesh et al. is by Artificial magnetic conductor structure
It is applied on paster antenna, bandwidth and radiation gain are all greatly improved.
But when several identical artificial magnetic conductor unit composition reflecting plates are located at below antenna, due to each list
Member is different at a distance from antenna, and the current strength distribution of each cell surface is also inconsistent, therefore cannot farthest enhance
The radiation gain of antenna.W.Yang et al. proposes that detail loads artificial magnetic conductor (Stub-loaded artificial
Magnetic conductor, SLAMC) structure, and as the floor of probe-fed patch antenna, so that the work of antenna
Frequency band, radiation gain and radiation efficiency all improve a lot.But radiation efficiency only has 83%, and cross polarization inhibitory effect compared with
Difference.In order to improve the performance of antenna, and then they propose a kind of high efficiency based on aperiodic Artificial magnetic conductor structure micro-
Band antenna, is able to achieve efficient radiation characteristic and preferable cross polarization inhibits, but this structure is only able to achieve monopole
Change characteristic.
Summary of the invention
The purpose of the present invention is to provide a kind of dual polarization high-gain based on aperiodic Artificial magnetic conductor structure MIMO days
Line is able to achieve dual polarization, high-gain, high efficiency, the radiation characteristic of high isolation.
A kind of dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure, the medium stacked using bilayer
Substrate composition, including cross paster antenna, metal floor, artificial magnetic conductor reflecting plate, coaxial feed probe.Cross patch
Antenna is printed on upper layer medium substrate upper surface, and metal floor is printed on layer dielectric base lower surface, artificial magnetic conductor reflection
Plate is printed on layer dielectric upper surface of base plate, and coaxial feed probe is reflected from layer dielectric base lower surface insertion artificial magnetic conductor
Plate and upper layer medium substrate, four coaxial feed probes are connect with cross paster antenna.The artificial magnetic conductor reflection
Plate is divided into multiple independent artificial magnetic conductor units in matrix arrangement, between two adjacent artificial magnetic conductor units
Equipped with narrow gap, it should be noted that when the size disparity mistake of two artificial magnetic conductor units adjacent on diagonal line
When big, it may appear that the phenomenon that two adjacent units are overlapped on diagonal line, this can be avoided by small shearing, while basic
It will not influence the electromagnetic property of metamaterial structure.Therefore, each artificial magnetic conductor unit may be conventional rectangular metal patch,
It is also likely to be the rectangular metal patch with small shearing.The artificial magnetic conductor unit of the matrix arrangement is about horizontal axis
It is symmetrical arranged with vertical axis.In addition, it is contemplated that the electric current of corner edges is weaker, it can be by four clipped corners on floor, this
Sample not only ensure that the radiance of antenna, but also enhance wave beam in the consistency of azimuth plane.
As an improvement of the present invention, the paster antenna is cross-shaped configuration, has horizontal polarization and vertical polarization
Dual polarization characteristic, the degree of coupling of two dimensions can all be influenced by distance, can pass through change in size and arrangement variation
To compensate.
As an improvement of the present invention, the artificial magnetic conductor reflecting plate is centrosymmetric, and artificial magnetic conductor unit exists
It is on horizontal axis and vertical axis in two dimensions is arranged symmetrically.
As an improvement of the present invention, narrow gap is equipped between two adjacent artificial magnetic conductor units.If
There is the phenomenon that two units adjacent on diagonal line are overlapped, can be avoided by small shearing, while will not influence substantially super
The electromagnetic property of material structure.
As an improvement of the present invention, it is contemplated that the electric current of corner edges is weaker, can by four clipped corners on floor,
It not only ensure that the radiance of antenna in this way, but also enhanced wave beam in the consistency of azimuth plane.
As an improvement of the present invention, coaxial feed probe uses two groups of difference coaxial feed modes for paster antenna feedback
Electricity, to realize that preferable cross polarization inhibits.
Using above-mentioned microstrip antenna, paster antenna 1 be it is cross, be printed on 2 upper surface center of upper layer medium substrate,
A length of 0.1 λg,0.75λg, width is 0.1 λg,0.5λg, wherein λgFor the medium effective wavelength of upper layer medium substrate 2.
Using above-mentioned microstrip antenna, the length and width of artificial magnetic conductor unit are 0.03 λ, 0.26 λ, the width in narrow gap
For 0.001 λ, 0.015 λ, the length and width of small shearing are 0.001 λ, 0.015 λ.
Using above-mentioned microstrip antenna, the permittivity ε of upper layer medium substrate and layer dielectric substraterIt is 2.2,
10.2, thickness H are 0.01 λ, 0.1 λ, and wherein λ is free space wavelength.
Using above-mentioned microstrip antenna, paster antenna is cross-shaped configuration, is printed on upper layer medium substrate upper surface center,
Its a length of 0.1 λg,0.75λg, width is 0.1 λg,0.5λg, wherein λgFor the medium effective wavelength of upper layer medium substrate.
Compared with prior art, the present invention having the advantage that two kinds of polarization modes, the structure can be achieved in (1) present invention
Using cross paster antenna, the dual polarization characteristic with horizontal polarization and vertical polarization, and artificial magnetic conductor face center is set
Symmetrically, the degree of coupling of two dimensions can all be influenced by distance, can be compensated by change in size and arrangement variation；
(2) the dual polarization high-gain mimo antenna proposed by the present invention based on aperiodic Artificial magnetic conductor structure, by suitably adjusting it
Size carrys out the distribution of lengths of control rectangle metal patch, may finally effectively improve the electric-field intensity distribution of antenna surface, real
Existing broadband, high efficiency, the radiation characteristic of high isolation, at the same time, aperture efficiency also can be improved to 105%；(3) present invention proposes
The dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure, it is contemplated that the electric current of corner edges is weaker,
Four clipped corners on floor can not only have been ensure that into the radiance of antenna in this way, but also enhanced wave beam in the consistency of azimuth plane；
(4) the dual polarization high-gain mimo antenna proposed by the present invention based on aperiodic Artificial magnetic conductor structure, still remains and is based on
The low section characteristic that the high efficiency microstrip antenna of aperiodic Artificial magnetic conductor structure is compared, overall structure only have the thickness of 0.05 λ；
(5) the dual polarization high-gain mimo antenna proposed by the present invention based on aperiodic Artificial magnetic conductor structure is situated between using the double-deck microwave
Scutum, structure is simple, handling ease, and cost and weight are all relatively small, thus can be mass produced.
The present invention is described further with reference to the accompanying drawings of the specification.
Detailed description of the invention
Fig. 1 is the present invention is based on the three-dimensional figure of the dual polarization high-gain mimo antenna of aperiodic Artificial magnetic conductor structure, bows
View and side view, wherein figure (a) is three-dimensional figure, figure (b) is top view, and figure (c) is side view.
Fig. 2 is the three-dimensional figure and top view of the aperiodic artificial magnetic conductor unit of the present invention, wherein figure (a) is the artificial magnetic of rectangle
The three-dimensional figure of conductor element, figure (b) are the top view of rectangle artificial magnetic conductor unit.
Fig. 3 is the long l of the rectangular metal patch of 32 independent artificial magnetic conductor units of the inventionm, width lnDistribution map.
Fig. 4 is based on Fig. 3 in artificial magnetic conductor unit different length lnUnder reflected phase figure.
It in the distribution of lengths of cross metal patch is l that Fig. 5, which is based on Fig. 3,1=9mm, l2=8.8mm, l3When=4.5mm
Reflection coefficient and gain and isolation and aperture efficiency curve, wherein (a) be reflection coefficient and gain curve, (b) for every
From with aperture efficiency curve.
It in the distribution of lengths of cross metal patch is l that Fig. 6, which is based on Fig. 3,1=9mm, l2=8.8mm, l3When=4.5mm
Maximum gain point at antenna pattern.
Fig. 7 is the long l of the rectangular metal patch of 16 independent artificial magnetic conductor units of the inventionm, width lnDistribution map.
It in the distribution of lengths of rectangular metal patch is l that Fig. 8, which is based on Fig. 7,1=8.5mm, l2Reflection coefficient when=8mm and
Gain and isolation and aperture efficiency curve, wherein (a) is the curve of reflection coefficient and gain, it is (b) isolation and aperture efficiency
Curve.
It in the distribution of lengths of rectangular metal patch is l that Fig. 9, which is based on Fig. 7,1=8.5mm, l2Maximum gain point when=8mm
The antenna pattern at place.
Specific embodiment
In conjunction with Fig. 1, a kind of dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure, using double-layer overlapped
The medium substrate composition put, including cross paster antenna 1, metal floor 6, artificial magnetic conductor reflecting plate 4, coaxial feed probe
3.Paster antenna 1 is printed on 2 upper surface of upper layer medium substrate, and metal floor is printed on 7 lower surface of layer dielectric substrate, artificial magnetic
Conductor reflecting plate 4 is printed on 7 upper surface of layer dielectric substrate, and coaxial feed probe 3 is inserted into people from 7 lower surface of layer dielectric substrate
Work magnetic conductor reflecting plate 4 and upper layer medium substrate 2, two groups of coaxial feed probes 3 are connect respectively with paster antenna 1 and difference
Feed is wherein differential signal between two on horizontal axis coaxial probe, between two coaxial probes on vertical axis
For differential signal.The artificial magnetic conductor reflecting plate 4 is divided into multiple independent artificial magnetic conductor lists in matrix arrangement
Member 5, each artificial magnetic conductor unit is conventional or with small shearing rectangular metal patch, while small shearing is substantially not
It will affect the electromagnetic property of metamaterial structure；It is symmetrical arranged centered on the artificial magnetic conductor unit of matrix arrangement.In view of angle
The electric current for falling edge is weaker, four clipped corners on floor can not only have been ensure that the radiance of antenna, but also enhance wave in this way
Consistency of the beam in azimuth plane.
In conjunction with Fig. 2, narrow gap 9 is equipped between two adjacent artificial magnetic conductor units 5, if adjacent on diagonal line
Two artificial magnetic conductor units 5 size disparity it is excessive, it may appear that the phenomenon that adjacent two units are overlapped on diagonal line, this
It can be avoided by small shearing 8, while will not influence the electromagnetic property of metamaterial structure, artificial magnetic conductor at this time substantially
There are small shearings 8 above for unit 5.
The permittivity ε of the upper layer medium substrate 2 and layer dielectric substrate 7rIt is 2.2,10.2, thickness H is
0.01 λ, 0.1 λ, wherein λ is free space wavelength.
The long a of the cross paster antenna 1 is 0.1 λg,0.75λg, wide b is 0.1 λg,0.5λg, wherein λgFor upper layer
The medium effective wavelength of medium substrate 2.
The long l of the rectangular metal patchmWith wide lnIt is 0.03 λ, 0.26 λ, the width G in narrow gap 9 is 0.001 λ,
0.015 λ, the length and width t of small shearing 8 are 0.001 λ, 0.015 λ.
Embodiment one
In conjunction with Fig. 3, the aperiodic artificial magnetic conductor reflecting plate 4 is divided into 32 independent artificial magnetic conductor units 5,
It is symmetrical arranged centered on the artificial magnetic conductor reflecting plate 4 of the matrix arrangement, that is to say, that 32 of the matrix arrangement
Independent artificial magnetic conductor unit 5 in symmetrically, i.e., is symmetrical arranged on two dimensions about horizontal axis and vertical axis.
For horizontal polarization, the every row's each unit length of artificial magnetic conductor unit 5 along the y-axis direction is consistent, but the length of different rows is different,
It is denoted as ln, from center, every row's length is successively l outward1、l2、l3, the structure respectively arranged up and down is respectively symmetrically.Similarly, for vertical
For polarization, each column each unit length along the x-axis direction is consistent, but the length of different lines is different, from the outside each column length in center
It also is successively l1、l2、l3.Therefore, the length and width of the artificial magnetic conductor unit 5 on diagonal line are consistent, are square structures.Because
Work as l1、l2、l3Gap it is larger when, it may appear that the phenomenon that adjacent two units are overlapped on diagonal line, so passing through small shearing
8 avoid, while small shearing the electromagnetic property that substantially will not influence metamaterial structure.In addition, it is contemplated that corner edges
Electric current is weaker, four clipped corners on floor can not only have been ensure that the radiance of antenna, but also enhance wave beam in azimuth plane in this way
Consistency.
The length and width of artificial magnetic conductor unit 5 are 0.03 λ, 0.26 λ, and the width in narrow gap 9 is 0.001 λ, 0.015 λ,
The length and width t of small shearing 8 is 0.001 λ, 0.015 λ；The permittivity ε of upper layer medium substrate 2 and layer dielectric substrate 7rIt is
2.2,10.2, thickness H are 0.01 λ, 0.1 λ, and wherein λ is free space wavelength；Paster antenna 1 be it is cross, be printed on upper layer
2 upper surface center of medium substrate, long b are 0.1 λg,0.75λg, wide a is 0.1 λg,0.5λg, wherein λgFor upper layer medium substrate 2
Medium effective wavelength.
In experiment, taking the long a of cross paster antenna 1 is 4mm, and wide b is 12.7mm；The long l of rectangular metal patch 6mWith
Wide lnWithin the scope of 4 to 10mm, the width G in narrow gap 9 is 0.4mm；The material of upper layer medium substrate 2 and layer dielectric substrate 7
Material is Rogers RT/Duroid 5880, permittivity εrIt is 2.2, dielectric loss angle 0.0009, thickness H is 1mm,
About 0.025 λ0(wherein λ0For the free space wavelength at 7.7GHz).
In conjunction with Fig. 4, when plane wave impinges perpendicularly on aperiodic artificial magnetic conductor reflecting plate 4, the reflected phase of back wave
It can change and consecutive variations with frequency, phase change range is 180 °~-180 °, the reflection of this and common artificial magnetic conductor
Phase characteristic is consistent；With the length l of rectangular metal patch 6nIncrease to 9mm from 7mm, 1 reflected phase point is gradually to low
Frequency displacement is dynamic.
It is available by the dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure in conjunction with Fig. 5, reflection
Working band of the coefficient lower than -10dB is 6.9GHz~8.1GHz, and relative bandwidth 15.7%, maximum gain can achieve
13.7dBi；And 55dB may be up to it can be found that being isolated by isolation and aperture efficiency figure, and in its working band, radiation effect
Rate may be up to 105%.
In conjunction with Fig. 6, by the maximum gain point of the dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure
The antenna pattern at place it can be found that the dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure cross-pole
It is preferable to change inhibitory effect, can reach 35dB or so.
From the foregoing, it will be observed that the dual polarization high-gain mimo antenna of the invention based on aperiodic Artificial magnetic conductor structure is able to achieve
Dual polarization, high-gain, high calibre efficiency and preferable isolation.
Table 1 is that the present invention is based on the dual polarization high-gain mimo antennas of aperiodic Artificial magnetic conductor structure to be pasted in rectangular metal
The distribution of lengths of piece is l1=9mm, l2=8.8mm, l3When=4.5mm and the distribution of lengths of rectangular metal patch is L1=6mm, l2
Performance when=7mm.
In conjunction with table 1, it is somebody's turn to do the dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure and is keeping impedance band
In wide, the still higher situation of gain, dual polarization characteristic is realized, while aperture efficiency being improved to 105%.On the other hand, every
Preferable, the up to 60dB from also.
Table 1
Embodiment two
In conjunction with Fig. 7, the artificial magnetic conductor reflecting plate 4 is divided into 16 independent artificial magnetic conductor units 5, the square
It is symmetrical arranged centered on the artificial magnetic conductor reflecting plate 4 of configuration arrangement, that is to say, that 16 of the matrix arrangement are independent
Artificial magnetic conductor unit 5 in symmetrically, i.e., is symmetrical arranged on two dimensions about horizontal axis and vertical axis.For water
Mean pole, the every row's each unit length of artificial magnetic conductor unit 5 along the y-axis direction is consistent, but the length of different rows is different, is denoted as
ln, from center, every row's length is successively l outward1、l2, the structure respectively arranged up and down is respectively symmetrically.Come similarly, for vertical polarization
It says, each column each unit length along the x-axis direction is consistent, but the length of different lines is different, also successively from the outside each column length in center
It is l1、l2.Therefore, the length and width of the artificial magnetic conductor unit 5 on diagonal line are consistent, are square structures.Need exist for explanation
It is to work as l1、l2Gap it is larger when, it may appear that the phenomenon that adjacent two units are overlapped on diagonal line, so passing through to it small
8 are sheared to avoid, while will not influence the electromagnetic property of metamaterial structure substantially.
The length and width of artificial magnetic conductor unit 5 are 0.03 λ, 0.26 λ, and the width in narrow gap 9 is 0.001 λ, 0.015 λ,
The length and width t of small shearing 8 is 0.001 λ, 0.015 λ；The permittivity ε of upper layer medium substrate 2 and layer dielectric substrate 7rIt is
2.2,10.2, thickness H are 0.01 λ, 0.1 λ, and wherein λ is free space wavelength；Paster antenna 1 be it is cross, be printed on upper layer
2 upper surface center of medium substrate, long b are 0.1 λg,0.75λg, wide a is 0.1 λg,0.5λg, wherein λgFor upper layer medium substrate 2
Medium effective wavelength.
In experiment, taking the long a of cross paster antenna 1 is 3.5mm, and wide b is 13mm；The long l of rectangular metal patch 6mWith
Wide lnWithin the scope of 6 to 10mm, the width G in narrow gap 9 is 0.4mm；The material of upper layer medium substrate 2 and layer dielectric substrate 7
Material is Rogers RT/Duroid 5880, permittivity εrIt is 2.2, dielectric loss angle 0.0009, thickness H is 1mm,
About 0.025 λ0(wherein λ0For the free space wavelength at 7.7GHz).
In conjunction with Fig. 4, when plane wave, which impinges perpendicularly on, minimizes aperiodic artificial magnetic conductor reflecting plate 4, back wave it is anti-
Penetrating phase can change and consecutive variations with frequency, and phase change range is 180 °~-180 °, this and common artificial magnetic conductor
Reflected phase characteristics be consistent；With the length l of rectangular metal patch 6nIncrease to 9mm from 7mm, 1 reflected phase point by
It is gradually mobile to low frequency.
In conjunction with Fig. 8, by the dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure reflection coefficient and
Gain curve figure is available, and working band of the reflection coefficient lower than -10dB is 7.5GHz~8.8GHz, and relative bandwidth is
16.4%；Radiation gain maximum value is 12.8dBi；Through isolation and aperture efficiency figure it can be found that in its working band, every
From up to 60dB, and radiation efficiency may be up to 104%.
In conjunction with Fig. 9, by the maximum gain point of the dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure
For the antenna pattern at place it can be found that the cross polarization inhibitory effect is preferable, cross polarization inhibits level to can reach 50dB.This
Outside, since aerial radiation aperture area is smaller, all frequency points do not occur minor lobe in the aerial band.
From the foregoing, it will be observed that the dual polarization high-gain mimo antenna of the invention based on aperiodic Artificial magnetic conductor structure really may be used
To realize small dual polarization, broadband, bore, high isolation, broadband high-efficiency characteristic and cross polarization characteristics can be improved, solve minor lobe
Problem.
In conjunction with table 1, should dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure realize it is bipolar
While changing characteristic, not only bandwidth, gain are preferable, also improve aperture efficiency to 104%.At the same time, cross polarization inhibits
Level can reach 50dB.On the other hand, also preferable, up to 60dB is isolated.
Claims (8)
1. a kind of dual polarization high-gain mimo antenna based on aperiodic Artificial magnetic conductor structure, the medium base stacked using bilayer
Board group at, comprising:
It is printed on the paster antenna (1) of upper layer medium substrate (2) upper surface,
It is printed on the metal floor (6) of layer dielectric substrate (7) lower surface,
It is printed on the artificial magnetic conductor reflecting plate (4) of layer dielectric substrate (7) upper surface, and
Four from layer dielectric substrate (7) lower surface insertion artificial magnetic conductor reflecting plate (4) and upper layer medium substrate (2) are coaxial
Feed probes (3), four coaxial feed probes (3) connect with cross paster antenna (1)；
It is characterized in that,
The paster antenna (1) is cross-shaped configuration,
The artificial magnetic conductor reflecting plate (4) is divided into several not of uniform size and the setting that is centrosymmetric artificial magnetic conductors
Unit (5), each artificial magnetic conductor unit (5) are rectangular metal patch,
The artificial magnetic conductor unit (5) is the rectangular metal patch of small shearing,
Metal floor (6) quadrangle is removed.
2. antenna according to claim 1, which is characterized in that be equipped between two adjacent artificial magnetic conductor units (5)
Narrow gap (9).
3. antenna according to claim 1, which is characterized in that four coaxial feed probes (3) are divided into two groups, using difference
Coaxial feed mode is respectively cross paster antenna (1) power supply, is wherein poor between two on horizontal axis coaxial probe
Sub-signal is differential signal between two coaxial probes on vertical axis.
4. antenna according to claim 1, which is characterized in that Jie of upper layer medium substrate (2) and layer dielectric substrate (7)
Electric constant εrIt is [2.2,10.2] that thickness H is [0.01 λ, 0.1 λ], wherein λ is free space wavelength.
5. antenna according to claim 1, which is characterized in that the length and width of artificial magnetic conductor unit (5) be [0.03 λ,
0.26 λ], the width of narrow gap (9) is [0.001 λ, 0.015 λ], the length and width of small shearing (8) be [0.001 λ, 0.015
λ]。
6. antenna according to claim 1, which is characterized in that cross a length of [0.1 λ of paster antenna (1)g,0.75λg],
Width is [0.1 λg,0.5λg], wherein λgFor the medium effective wavelength of upper layer medium substrate (2).
7. antenna according to claim 1, which is characterized in that the artificial magnetic conductor reflecting plate (4) be divided into 16 or
32 independent artificial magnetic conductor units (5), the independent artificial magnetic conductor unit (5) are equal along horizontal axis and vertical axis
In symmetrical structure,
For horizontal polarization, the every row's each unit length of artificial magnetic conductor unit (5) along the y-axis direction is consistent, but the length of different rows
Degree is different,
For vertical polarization, each column each unit length of artificial magnetic conductor unit (5) along the x-axis direction is consistent, but the length of different lines
Degree is different,
The length and width of artificial magnetic conductor unit (5) on diagonal line are consistent, are square structures.
8. antenna according to claim 7, which is characterized in that
The length and width of artificial magnetic conductor unit (5) are [0.03 λ, 0.26 λ], the width of narrow gap (9) be [0.001 λ, 0.015
λ], the length and width of small shearing (8) are [0.001 λ, 0.015 λ]；
The permittivity ε of upper layer medium substrate (2) and layer dielectric substrate (7)rIt is [2.2,10.2] that thickness H is [0.01
λ, 0.1 λ], wherein λ is free space wavelength；
Paster antenna (1) is cross-shaped configuration, is printed on upper layer medium substrate (2) upper surface center, a length of [0.1 λg,0.75
λg], width is [0.1 λg,0.5λg], wherein λgFor the medium effective wavelength of upper layer medium substrate (2).
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| CN106972279B (en) * | 2017-03-30 | 2019-12-27 | 南京邮电大学 | Frequency-adjustable artificial magnetic conductor structure and method for realizing phase modulation screen by using same |
| CN107437657B (en) * | 2017-05-26 | 2019-08-30 | 南京理工大学 | High-gain microstrip antenna based on aperiodic electromagnetic bandgap structure |
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| CN104900998A (en) * | 2015-05-05 | 2015-09-09 | 西安电子科技大学 | Low-profile dual-polarized base station antenna |
| CN104993226A (en) * | 2015-06-24 | 2015-10-21 | 华南理工大学 | Artificial magnetic conductor unit, artificial magnetic conductor structure and planar antenna |
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