CN107026330A - The zero refraction microwave lens based on electromagnetism dual resonance structure - Google Patents
The zero refraction microwave lens based on electromagnetism dual resonance structure Download PDFInfo
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- CN107026330A CN107026330A CN201710176768.8A CN201710176768A CN107026330A CN 107026330 A CN107026330 A CN 107026330A CN 201710176768 A CN201710176768 A CN 201710176768A CN 107026330 A CN107026330 A CN 107026330A
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- dielectric substrate
- slab dielectric
- square aperture
- resonant ring
- bar shaped
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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
- H01Q15/02—Refracting or diffracting devices, e.g. lens, prism
- H01Q15/08—Refracting or diffracting devices, e.g. lens, prism formed of solid dielectric material
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Abstract
The present invention relates to a kind of zero refraction microwave lens based on electromagnetism dual resonance structure, the zero refraction microwave lens is alternate with N number of first slab dielectric substrate and be arranged parallel to each other and form by N+1 the second bar shaped medium substrates, the distance between adjacent N number of first slab dielectric substrate and N+1 second bar shaped medium substrate respectively d1, d2, d1, d2 ... d2；First slab dielectric substrate is formed by the slab dielectric substrate etch of double-sided copper-clad, is etched with the square aperture resonant ring that multiple length directions by the slab dielectric substrate are arranged on two faces respectively；Second bar shaped medium substrate 2, one side cover the slab dielectric substrate etch of copper for strip and form.The present invention can be directly placed above the bore of traditional antenna, and can significantly improve the radiation gain of antenna.The present invention has versatility to different antennas, it is not necessary to individually carry out structure optimization for different antennas.
Description
Technical field
The present invention relates to zero refraction microwave lens technical field, more particularly to a kind of zero folding based on electromagnetism dual resonance structure
Penetrate microwave lens.
Background technology
Supernormal medium (Metamaterial) be by the elementary cell with geometry in particular periodically or non-periodically
Arrangement obtained by novel artificial material.By changing the structure and parameter of elementary cell, supernormal medium can be freely controlled
Electromagnetic attributes, i.e. its dielectric constant and magnetic conductivity.Current supernormal medium dielectric constant can just be born with magnetic conductivity and be alternatively zero,
The two can be with jack per line, also can contrary sign.Therefore, if constructing the supernormal medium that dielectric constant or magnetic conductivity are zero, the extraordinary matchmaker
The refractive index of matter can be zero, i.e. zero refractive material (ZIM or Zero Refractive Index Metamaterial).2002
Year, S.Enoch etc. points out that zero refractive material has the function of convergence electromagnetic beam, therefore can be used for making microwave lens
In directionality (S.Enoch, et al.A metamaterial for directive for improving aerial radiation
emission.Physical Review Letters,2002,89:213902).Result of study based on S.Enoch et al., people
Have devised a variety of zero refraction microwave lens (hereinafter referred to as zero refractor) and zero refractor antenna quickly.However, existing
Zero refractor having comes real simply by simple zero dielectric constant (electric resonance) or simple zero magnetic conductivity (magnetic resonance)
Existing zero refractive index, their impedance mismatchs with air layer, if directly use can significantly reduce the radiation efficiency of antenna.Institute
So that existing most zero refractors can only be located in (Q.Wu, at al.A inside electromagnetic horn mouthful face
novelflat lens horn antenna designed based on zero refraction principle of
Metamaterials, Applied Physics, 2007, A87,151-156), or by the metallic reflection at antenna rear
Plate (floor of such as microstrip antenna) (Dongho Kim, at al.Analysis of Antenna Gain Enhancement
with a New Planar Metamaterial Superstrate:an Effective Medium and a Fabry-Pé
Rot Resonance Approach, J Infrared Milli Terahz Waves, 2010,31:1289-1303), or
It is inside (Cheng Q, the at al.Radiation of planar that antenna is directly embedded into zero refractor
electromagnetic waves by a line source in anisotropic MTMs,Journal of Physics
D-Applied Physics, 2010,43 (33)：335406.), while needing to carry out structure respectively for different antennas excellent
Change, just finally playing raising antenna gain, (antenna gain is the actual performance index of antenna, and the radiation that it is equal to antenna is oriented
Property coefficient is multiplied by the efficiency of antenna) effect.This make it that existing zero refractor is very fastidious to application environment, and for
Different antennas does not often have versatility, therefore very inconvenient uses.Although Ma et al. was proposed in 2009 can be using respectively
Zero refraction materials of anisotropy improve the impedance matching property of zero refractor and air, so that zero refractor can be with
(Ma YG, et are separated and (thus can make zero refractor that there is certain versatility for different antennas) with antenna
al.Near-field plane-wave-like beam emitting antenna fabricated by anisotropic
Metamaterial, Applied Physics Letters, 2009,94 (4)：044107.) but from current practical application
As a result from the point of view of, this refractor of anisotropy zero is extremely limited to the raising effect of antenna gain, even less than 1dB (referring to
In patent publication CN102280703 disclosed in 13 days Mays in 2011, Fig. 9 of Figure of description).
The content of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of zero refraction microwave lens based on electromagnetism dual resonance structure,
To solve the problem of existing refractor of anisotropy zero is low to the raising effect of antenna gain.
The purpose of the present invention is mainly achieved through the following technical solutions：
A kind of zero refraction microwave lens based on electromagnetism dual resonance structure, the zero refraction microwave lens includes：First bar shaped
Medium substrate, the second bar shaped medium substrate；
First slab dielectric substrate is the slab dielectric substrate of double-sided copper-clad, and is etched with square aperture resonant ring；
Second bar shaped medium substrate is the slab dielectric substrate that one side covers copper；
First slab dielectric substrate is identical with the second bar shaped medium substrate shape；
First slab dielectric substrate is N number of, and N is the integer more than 1, and the second bar shaped medium substrate is than the first slab dielectric base
Plate is more one；
The face-to-face side by side parallel arrangement of all second bar shaped medium substrates, the second adjacent slab dielectric base of any two
A first slab dielectric substrate is arranged between plate.
Direction of the one side of first slab dielectric substrate along long side, is etched with least two square aperture resonant ring, and the face
On square aperture resonant ring be vertical openings；
Direction of the another side of first slab dielectric substrate along long side, is etched with least two square aperture resonant ring, and should
Square aperture resonant ring on face is transverse opening；
The position of the square aperture resonant ring of vertical openings and the square aperture resonant ring of transverse opening is corresponded.
The square aperture resonant ring of vertical openings is equal with the size and shape of the square aperture resonant ring of transverse opening；
The length of side I2 of the square aperture resonant ring of vertical openings and the square aperture resonant ring of transverse opening is 5.4mm,
A/F S is 0.4mm, and the width W of resonant ring is 0.8mm；
With two transverse openings of arbitrary neighborhood between the square aperture resonant ring of two vertical openings of arbitrary neighborhood
It is 1.2mm apart from d3 between square aperture resonant ring.
The slab dielectric substrate that the one side that second bar shaped medium substrate is used covers copper covers provided with the one side for covering copper for strip
Copper, and strip covers the width I3 of copper for 6.6mm.
First slab dielectric substrate etch has the one side and the second slab dielectric base of the square aperture resonant ring of vertical openings
Plate is relative provided with the one side that strip covers copper, and is 2.9mm apart from d1；
First slab dielectric substrate etch has the one side and the second slab dielectric base of the square aperture resonant ring of transverse opening
Plate do not have strip cover copper one side it is relative, and be 3.7mm apart from d2.
The width I1 of first slab dielectric substrate and the second bar shaped medium substrate is 8mm；
The thickness of first slab dielectric substrate and the second bar shaped medium substrate is 0.8mm.
The dielectric constant of first slab dielectric substrate and the second bar shaped medium substrate is 2.2.
The present invention has the beneficial effect that：
1st, the present invention causes magnetic resonance using square aperture resonant ring SRR, makes lens by the first slab dielectric substrate
Magnetic conductivity is close to zero；
2nd, the present invention causes electric resonance using metal strap, makes the dielectric constant of lens by the second bar shaped medium substrate
Close to zero；
3rd, the present invention can be directly placed above the bore of traditional antenna, and can significantly improve the radiation increasing of antenna
Benefit；
4th, the present invention has versatility to different antennas, it is not necessary to individually carry out structure optimization for different antennas.
Other features and advantages of the present invention will be illustrated in the following description, and become aobvious and easy from specification
See, or understood by implementing the present invention.The purpose of the present invention and other advantages can be by wanting in the specification, right write
Structure specifically noted in book and accompanying drawing is asked to realize and obtain.
Brief description of the drawings
Accompanying drawing is only used for showing the purpose of specific embodiment, and is not considered as limitation of the present invention, in whole accompanying drawing
In, identical reference symbol represents identical part.
Fig. 1 reflects the structural representation of microwave lens for zero based on electromagnetism dual resonance structure；
Fig. 2 reflects the structure of the one side of the first slab dielectric substrate of microwave lens for zero based on electromagnetism dual resonance structure
Schematic diagram；
Fig. 3 reflects the knot of the another side of the first slab dielectric substrate of microwave lens for zero based on electromagnetism dual resonance structure
Structure schematic diagram；
Fig. 4 covers copper for the one side of the second bar shaped medium substrate of the zero refraction microwave lens based on electromagnetism dual resonance structure
Structural representation；
Fig. 5 is the vertical openings of the first slab dielectric substrate of the zero refraction microwave lens based on electromagnetism dual resonance structure
Square aperture resonant ring SRR structural representation；
Fig. 6 is H faces electromagnetic horn E faces far-field pattern；
Fig. 7 be in the case of fig. 6, in 8.9-10.8GHz frequency ranges, electromagnetic horn gain curve figure；
Fig. 8 is paster antenna E faces far-field pattern；
In the case that Fig. 9 is Fig. 8, in 9.7-10.2GHz frequency ranges, paster antenna gain curve figure：1- first
Shape medium substrate, the second bar shapeds of 2- medium substrate, the square aperture resonant ring of 3- transverse openings, the square aperture of 4- vertical openings
Resonant ring.
Embodiment
The preferred embodiments of the present invention are specifically described below in conjunction with the accompanying drawings, wherein, accompanying drawing constitutes the application part, and
It is used for the principle for explaining the present invention together with embodiments of the present invention.
A kind of zero refraction microwave lens based on electromagnetism dual resonance structure, the zero refraction microwave lens includes：First bar shaped
Medium substrate 1, the second bar shaped medium substrate 2；
First slab dielectric substrate 1 is the slab dielectric substrate of double-sided copper-clad, and is etched with square aperture resonant ring；
Second bar shaped medium substrate 2 is the slab dielectric substrate that one side covers copper；
First slab dielectric substrate 1 is identical with the shape of the second bar shaped medium substrate 2；
First slab dielectric substrate 1 is N number of, and N is the integer more than 1, the slab dielectric of the second bar shaped medium substrate 2 to the first
Substrate more than 1 one；
The face-to-face side by side parallel arrangement of all second bar shaped medium substrates 2, the second adjacent slab dielectric of any two
A first slab dielectric substrate 1 is arranged between substrate 2.
Direction of the one side of first slab dielectric substrate 1 along long side, is etched with least two square aperture resonant ring, and should
Square aperture resonant ring on face is vertical openings；
Direction of the another side of first slab dielectric substrate 1 along long side, is etched with least two square aperture resonant ring, and
Square aperture resonant ring on the face is transverse opening；
The position of the square aperture resonant ring 4 of vertical openings and the square aperture resonant ring 3 of transverse opening is corresponded.
The size and shape of the square aperture resonant ring 4 of vertical openings and the square aperture resonant ring 3 of transverse opening is homogeneous
Shape Deng, the square aperture resonant ring 4 of vertical openings is the square aperture resonant ring 3 by transverse opening around its central rotation
Obtained after 90 °；
The length of side I2 of the square aperture resonant ring 4 of vertical openings and the square aperture resonant ring 3 of transverse opening is
5.4mm, A/F S are 0.4mm, and the width W of resonant ring is 0.8mm；
With two transverse openings of arbitrary neighborhood between the square aperture resonant ring 4 of two vertical openings of arbitrary neighborhood
It is 1.2mm apart from d3 between square aperture resonant ring 3.
The slab dielectric substrate that the one side that second bar shaped medium substrate 2 is used covers copper covers provided with the one side for covering copper for strip
Copper, and strip covers the width I3 of copper for 6.6mm.
First slab dielectric substrate 1 is etched with the one side and the second slab dielectric of the square aperture resonant ring 4 of vertical openings
Substrate 2 is relative provided with the one side that strip covers copper, and is 2.9mm apart from d1；
First slab dielectric substrate 1 is etched with the one side and the second slab dielectric of the square aperture resonant ring 3 of transverse opening
Substrate 2 do not have strip cover copper one side it is relative, and be 3.7mm apart from d2；
The distance between adjacent N number of first slab dielectric substrate 1 and N+1 second bar shaped medium substrate 2 respectively d1,
d2、d1、d2……d2。
Depending on the specific size of first slab dielectric substrate 1 and the second bar shaped medium substrate 2 will be according to specific antenna, antenna
Mouth face it is bigger, length is longer.Wherein quantity N depends on Antenna aperture size, and N takes appropriate value lens size is slightly larger than antenna
Mouth face.N is integer, and Antenna aperture is bigger, and N is bigger
The width I1 of first slab dielectric substrate 1 and the second bar shaped medium substrate 2 is 8mm；
The thickness of first slab dielectric substrate 1 and the second bar shaped medium substrate 2 is 0.8mm.
The dielectric constant of first slab dielectric substrate 1 and the second bar shaped medium substrate 2 is 2.2, and the dielectric-slab used is
F4BMX-2.Certainly other materials can be also used, but needs the structural parameters of the characteristic changing lens according to material.In order to fix Jie
Matter substrate can do framework with the material of dielectric constant and magnetic conductivity close to air.
First slab dielectric substrate 1 and the second bar shaped medium substrate 2 are arranged by above-mentioned size, you can realize that electromagnetism is double
Resonance, though dielectric constant and magnetic conductivity simultaneously for it is almost equal close to zero value, realize lens peculiarity impedance and air
Matching, and further reduction refractive index and widen frequency band.
The thought of the present invention is equally applicable to other working frequencies, only need to be directed to different working frequencies, utilizes business
Electromagnetic simulation software (such as CST microwave studios), emulation, adjusting parameter, to adapt to required frequency are modeled to this antenna lens
Rate.
Embodiment 1
By taking a H faces loudspeaker as an example, when observation whether there is lens, what antenna radiation pattern has change：
Fig. 6 is contrast of the H faces electromagnetic horn E faces far-field pattern in the case where whetheing there is lens, wherein, curve b is existing
There is the E faces far-field pattern curve of H faces electromagnetic horn；Curve a is to set of the present invention based on electromagnetism in the Antenna aperture
The E faces far-field pattern curve obtained after zero refraction microwave lens of dual resonance structure.By Fig. 6 it can be found that antenna E faces far field
The directionality of directional diagram, which has, to be obviously improved, when 36.65 when half power points lobe width is by without lens ° narrow down to lens
9.06 °, gain improves 3.88dB.Fig. 7 is feelings of the lens to the electromagnetic horn gain improving in 8.9-10.8GHz frequency ranges
Condition.Through observation, this lens is in 8.9-10.8GHz frequency range, and head can effectively improve electromagnetic horn gain.Relative bandwidth
Reach 19.3%.
Embodiment 2
By taking a paster antenna as an example, when observation whether there is lens, what antenna radiation pattern has change：
Contrast of Fig. 8 paster antenna E faces far-field pattern in the case where whetheing there is lens, wherein, curve c is existing patch
The E faces far-field pattern curve of chip antenna.Curve e is to set of the present invention based on electromagnetism double resonance knot in the Antenna aperture
The E faces far-field pattern curve obtained after zero refraction microwave lens of structure.By Fig. 8 it can be found that antenna E faces far-field patterns
Directionality, which has, to be obviously improved, and 74.18 when half power points lobe width is by without lens ° narrow down to 24.24 ° during lens,
Gain improves 4.8dB.Fig. 9 is situation of this lens to the paster antenna gain improving in 9.7-10.2GHz frequency range.
It can be found that in this frequency range, this lens can be effectively improved its gain.
In summary, the embodiments of the invention provide a kind of zero refraction microwave lens based on electromagnetism dual resonance structure, this
All there is considerable gain to improve effect electromagnetic horn and paster antenna in lens very wide frequency band, it was demonstrated that this lens pair
Different antennae has versatility, is not required to do structural adjustment and optimization for different antennae.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
It should all be included within the scope of the present invention.
Claims (8)
1. a kind of zero refraction microwave lens based on electromagnetism dual resonance structure, it is characterised in that the zero refraction microwave lens includes：
First slab dielectric substrate (1), the second bar shaped medium substrate (2)；
The first slab dielectric substrate (1) is the slab dielectric substrate of double-sided copper-clad, and is etched with square aperture resonant ring；
The second bar shaped medium substrate (2) is the slab dielectric substrate that one side covers copper；
The first slab dielectric substrate (1) is identical with second bar shaped medium substrate (2) shape；
The first slab dielectric substrate (1) is N number of, and N is the integer more than 1, and the second bar shaped medium substrate (2) is than described
First slab dielectric substrate (1) one more；
The face-to-face side by side parallel arrangement of all second bar shaped medium substrates (2), the adjacent Article 2 of any two
The first slab dielectric substrate (1) is arranged between shape medium substrate (2).
2. zero refraction microwave lens according to claim 1, it is characterised in that the first slab dielectric substrate (1)
Simultaneously along the direction on long side, at least two square aperture resonant ring is etched with, and the square aperture resonant ring on the face is vertical
Opening；
Direction of the another side of the first slab dielectric substrate (1) along long side, is etched with least two square aperture resonant ring,
And the square aperture resonant ring on the face is transverse opening；
A pair of the position 1 of the square aperture resonant ring (4) of the vertical openings and the square aperture resonant ring (3) of transverse opening
Should.
3. zero refraction microwave lens according to claim 2, it is characterised in that the square aperture resonance of the vertical openings
Ring (4) is equal with the size and shape of the square aperture resonant ring (3) of transverse opening；
The length of side I2 of the square aperture resonant ring (4) of the vertical openings and the square aperture resonant ring (3) of transverse opening is
5.4mm, A/F S are 0.4mm, and the width W of resonant ring is 0.8mm.
4. zero refraction microwave lens according to claim 3, it is characterised in that two vertical openings of arbitrary neighborhood
Square aperture resonant ring (4) between and arbitrary neighborhood two transverse openings square aperture resonant ring (3) between, away from
It is 1.2mm from d3.
5. according to any zero described refraction microwave lens of claim 2 to 4, it is characterised in that the second slab dielectric base
The slab dielectric substrate that the one side that plate (2) is used covers copper is provided with and covers the one side of copper and cover copper for strip, and the strip covers copper
Width I3 be 6.6mm.
6. zero refraction microwave lens according to claim 5, it is characterised in that the first slab dielectric substrate (1) erosion
The one side for being carved with the square aperture resonant ring (4) of vertical openings covers copper with the second bar shaped medium substrate (2) provided with strip
One side it is relative, and be 2.9mm apart from d1；
The first slab dielectric substrate (1) is etched with the one side and described second of the square aperture resonant ring (3) of transverse opening
Slab dielectric substrate (2) do not have strip cover copper one side it is relative, and be 3.7mm apart from d2.
7. it is according to claim 1 zero refraction microwave lens, it is characterised in that the first slab dielectric substrate (1) with
The width I1 of second bar shaped medium substrate (2) is 8mm；
The thickness of the first slab dielectric substrate (1) and the second bar shaped medium substrate (2) is 0.8mm.
8. it is according to claim 1 zero refraction microwave lens, it is characterised in that the first slab dielectric substrate (1) with
The dielectric constant of second bar shaped medium substrate (2) is 2.2.
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| CN201710176768.8A CN107026330A (en) | 2017-03-23 | 2017-03-23 | The zero refraction microwave lens based on electromagnetism dual resonance structure |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664314A (en) * | 2012-05-25 | 2012-09-12 | 哈尔滨工业大学 | Zero-refraction microwave lens based on electromagnetic double resonance structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664314A (en) * | 2012-05-25 | 2012-09-12 | 哈尔滨工业大学 | Zero-refraction microwave lens based on electromagnetic double resonance structure |
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