CN110061358A - The back-shaped left-handed material unit of two-band circle - Google Patents
The back-shaped left-handed material unit of two-band circle Download PDFInfo
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- CN110061358A CN110061358A CN201910392503.0A CN201910392503A CN110061358A CN 110061358 A CN110061358 A CN 110061358A CN 201910392503 A CN201910392503 A CN 201910392503A CN 110061358 A CN110061358 A CN 110061358A
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- 238000010276 construction Methods 0.000 abstract description 4
- 230000001413 cellular effect Effects 0.000 abstract description 3
- 238000004891 communication Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 230000035699 permeability Effects 0.000 description 3
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- 239000002184 metal Substances 0.000 description 2
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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
- 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
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
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Abstract
The invention discloses a kind of back-shaped left-handed material units of two-band circle, are related to wireless communication field, including dielectric-slab (4) and the back-shaped patch of circle (5) being printed on dielectric-slab (4)；The back-shaped patch (5) of circle is made of two external semicircles, two internal semicircles and a microstrip line (3) for crossing the center of circle；Two external semicircles are arranged above and below, and it is in left-right situs that two internal semicircles, which have rotated 90 ° around the center of circle compared to external semicircle,；There is at two symmetrically gap between two external semicircles, has everywhere symmetrically gap between two internal semicircles and microstrip line (3).The back-shaped left-handed material cellular construction of two-band circle of the present invention is simple, it is easy to accomplish, it is at low cost.
Description
Technical field
The invention belongs to wireless communication fields, are related to a kind of back-shaped left-handed material unit of two-band circle.
Background technique
Left-handed material is a kind of Meta Materials the most classical, is defined as in certain frequency ranges while having negative permittivity
And negative magnetoconductivity.It is made of the artificial cellular construction that periodic size is far smaller than operation wavelength, this kind of material can be presented naturally
Extraordinary physical property not available for material.
Early in nineteen sixty-eight, the theoretical physicist Veselago of the Soviet Union passes through the careful research hair to maxwell equation group
It is existing, when propagation of the electromagnetic wave in the material that magnetic conductivity and dielectric constant are negative value, the phase velocity and group velocity of Electromagnetic Wave Propagation
Direction show the state of reverse phase so that electric field E, magnetic field H and tri- vector of direction of propagation K are in left hand relationship, present
The left hand helix rule relative to right-hand rule is gone out, therefore this material is defined as LHM.
1996, professor Pendry of Britain's Imperial College of Science and Technology constructed low frequency using filament in an experiment
When plasma material, it was found that possess negative permittivity in the fine wire of periodic arrangement.1999, professor Pendry etc.
Further provide split ring resonator (Split Ring Resonator, SRR) structure.
Hereafter, a series of sub-wavelength structure left-handed material unit of classics is put forward one after another, such as: with negative index
The Ω type left-handed material of property provides negative magnetoconductivity by opening resonance loop structure, I-shape construction provides the group of negative permittivity
Mould assembly metamaterial structure, the Meta Materials etc. being made of two various sizes of S-shaped resonant rings.
The common trait of above-mentioned Meta Materials is that the wave vector direction of incidence wave must be in same water with the plane of metamaterial unit
Plane constrains the scope of application of such Meta Materials significantly, it is difficult to be applied to practical.And then there have scholar to propose a kind of plane to be super
Material structure, which may make up with time-limited metal wire, in the case where electromagnetic wave vertical incidence, in same frequency range
Negative magnetoconductivity can not only be generated, moreover it is possible to generate negative permittivity.Compared to metamaterial structure before, plane metamaterial structure
Size on cell propagation direction can be suitable with irradiation electromagnetic wavelength, thus has and be more widely applied range.Obviously,
The Meta Materials of plane possess more values for being worth research compared with this kind of Meta Materials being made of metal wire and split ring resonator.
Summary of the invention
Goal of the invention of the invention is: in view of the above problems, providing a kind of two-band circle back-shaped left-handed material
Unit has the advantages of simple structure and easy realization, at low cost, is formed simultaneously the left hand frequency band of two-band.
The technical solution adopted by the invention is as follows:
The back-shaped left-handed material unit of two-band circle of the present invention, including dielectric-slab and the back-shaped patch of the circle being printed on dielectric-slab；Circle
Back-shaped patch is made of two external semicircles, two internal semicircles and a microstrip line for crossing the center of circle；Above and below two external semicircles
Arrangement, two internal semicircles have rotated 90 ° around the center of circle compared to external semicircle, are in left-right situs；Between two external semicircles
There is at two symmetrically gap, has everywhere symmetrically gap between two internal semicircles and microstrip line.
Preferably, at two between two external semicircles between gap and two internal semicircles and the microstrip line in the center of circle
Gap everywhere, size is identical, generates magnetic resonance, adjusts the equivalent capacity of the adjustable structure in gap.
Preferably, two external semicircles generate electric resonance, adjust the whole equivalent inductance of size adjustable of two external semicircles.
Preferably, the Rogress RO4003 dielectric-slab that dielectric-slab uses with a thickness of 0.8mm, having a size of 5mmX5mm.
The back-shaped left-handed material unit of the two-band circle, can be realized stronger resonance, reduction unit size.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are: two-band of the present invention circle is back-shaped
Left-handed material cellular construction is simple, it is easy to accomplish, it is at low cost, it is formed simultaneously the left hand frequency band of two-band.
Detailed description of the invention
Examples of the present invention will be described by way of reference to the accompanying drawings, in which:
Fig. 1 is the structural schematic diagram of the back-shaped left-handed material unit of two-band circle of the present invention.
The amplitude of the S parameter of the back-shaped left-handed material unit of Fig. 2 two-band circle of the present invention.
The phase of the S parameter of the back-shaped left-handed material unit of Fig. 3 two-band circle of the present invention.
The dielectric constant of the back-shaped left-handed material unit of Fig. 4 two-band circle of the present invention.
The Effective permeability of the back-shaped left-handed material unit of Fig. 5 two-band circle of the present invention.
The refractive index of the back-shaped left-handed material unit of Fig. 6 two-band circle of the present invention.
Marked in the figure: 1 is the first outside semicircle, 1 ' is the second outside semicircle, and 2 be the first inside semicircle, and 2 ' be in second
Portion's semicircle, 3 be microstrip line, and 4 be dielectric-slab, and 5 be the back-shaped patch of circle, 6 for the first gap, 6 ' for the second gap, 7 be third
Ground gap, 7 ' be the 5th ground gap, and 8 be the 4th ground gap, and 8 ' be the 6th ground gap.
Specific embodiment
All features disclosed in this specification or disclosed all methods or in the process the step of, in addition to mutually exclusive
Feature and/or step other than, can combine in any way.
Any feature disclosed in this specification (including any accessory claim, abstract), unless specifically stated,
It is replaced by other equivalent or with similar purpose alternative features.That is, unless specifically stated, each feature is a series of
An example in equivalent or similar characteristics.
As shown in Figure 1, the back-shaped left-handed material unit of two-band circle of the present invention, including dielectric-slab 4, and it is printed on dielectric-slab
The back-shaped patch 5 of circle on 4；The back-shaped patch 5 of circle is crossed the microstrip line 3 in the center of circle by two external semicircles, two internal semicircles and one
It constitutes；Two external semicircles are arranged above and below, and two internal semicircles have rotated 90 ° around the center of circle compared to external semicircle, in left and right
Arrangement；There is at two symmetrically gap between two external semicircles, has between two internal semicircles and microstrip line 3 and symmetrically stitch everywhere
Gap.
In embodiment, two external semicircles include the first outside semicircle 1 and the second outside semicircle 1 '；Two internal semicircles
Including the first inside semicircle 2 and the second inside semicircle 2 '；Equipped with the first between first outside semicircle 1 and the second outside semicircle 1 '
Gap 6 and the second ground gap 6 '；First inside semicircle 2 and the second inside semicircle 2 ' are equipped between the microstrip line 3 in the center of circle respectively
Third ground gap 7, the 4th ground gap 8, the 5th ground gap 7 ' and the 6th ground gap 8 '；Gap everywhere, size is identical, and it is humorous to generate magnetic
Vibration adjusts the equivalent capacity of the adjustable structure in gap.
In embodiment, two external semicircles generate electric resonance, adjust the whole equivalent electricity of size adjustable of two external semicircles
Sense.
In embodiment, the Rogress RO4003 dielectric-slab that dielectric-slab 4 uses with a thickness of 0.8mm, having a size of
5mmX5mm。
The back-shaped left-handed material unit of the two-band circle, can be realized stronger resonance, reduction unit size.
The scattering parameter that emulation obtains the back-shaped left-handed material unit of two-band circle of the present invention is as shown in Figures 2 and 3, wherein scheming
2 describe the amplitude of S parameter, and Fig. 3 describes the phase of S parameter.
As shown in Fig. 2, there is trough and projection peak near 9.8GHz respectively in the amplitude variation of S11 and S21,
Simultaneously in the direction towards 0GHz in the Long-term change trend of trough and projection peak, as shown in figure 3, existing in S11 and S21
Nearby there is significantly phase change in 6.5GHz, 8GHz, 10GHz and 11GHz.
Parameter is effectively extracted using equivalent parameters extracting method, the back-shaped left-handed material unit of obtained circle has
Parameter is imitated as shown in Fig. 4 and Fig. 5, wherein Fig. 4 is effective dielectric constant, and Fig. 5 is Effective permeability, is had as seen from Figure 4
Imitate dielectric constant real part be negative value in the entire frequency range of 0-15GHz, it can be observed in figure 5, in addition to
The real part of Effective permeability is other frequencies other than positive value, within the scope of 0-15GHz in 7.5GHz-8.2GHz frequency range
Duan Jun is zero hereinafter, obtaining justifying the refractive index of back-shaped left-handed material unit in turn as shown in Fig. 6, in addition to 7.3GHz-7.7GHz
Refractive index in frequency range is other frequency ranges other than zero, within the scope of 0-15GHz, and the refractive index of the material cell is negative,
Realize left hand frequency band.
The invention is not limited to specific embodiments above-mentioned.The present invention, which expands to, any in the present specification to be disclosed
New feature or any new combination, and disclose any new method or process the step of or any new combination.
Claims (4)
1. the back-shaped left-handed material unit of two-band circle, it is characterised in that: including dielectric-slab (4) and be printed on dielectric-slab (4)
The back-shaped patch (5) of circle；The back-shaped patch (5) of circle is crossed the microstrip line (3) in the center of circle by two external semicircles, two internal semicircles and one
It constitutes；Two external semicircles are arranged above and below, and two internal semicircles have rotated 90 ° around the center of circle compared to external semicircle, in left and right
Arrangement；There is at two symmetrically gap between two external semicircles, has everywhere symmetrically between two internal semicircles and microstrip line (3)
Gap.
2. the back-shaped left-handed material unit of two-band circle according to claim 1, it is characterised in that: between two external semicircles
Two at gap everywhere between the internal semicircles of gap and two and the microstrip line (3) in the center of circle, size is identical, generate magnetic resonance,
Adjust the equivalent capacity of the adjustable structure in gap.
3. the back-shaped left-handed material unit of two-band circle according to claim 1, it is characterised in that: two external semicircles generate
Electric resonance adjusts the whole equivalent inductance of size adjustable of two external semicircles.
4. the back-shaped left-handed material unit of two-band circle according to claim 1, it is characterised in that: dielectric-slab (4) is using thick
Degree is the Rogress RO4003 dielectric-slab of 0.8mm, having a size of 5mmX5mm.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910000702 | 2019-01-02 | ||
| CN2019100007022 | 2019-01-02 |
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| CN110061358A true CN110061358A (en) | 2019-07-26 |
| CN110061358B CN110061358B (en) | 2023-12-15 |
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Citations (12)
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|---|---|---|---|---|
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| US20080316140A1 (en) * | 2007-06-25 | 2008-12-25 | Industrial Technology Research Institute | Antenna Apparatus and Antenna Radome and Design Method Thereof |
| US20090262766A1 (en) * | 2006-10-19 | 2009-10-22 | Houtong Chen | Active terahertz metamaterial devices |
| CN101976759A (en) * | 2010-09-07 | 2011-02-16 | 江苏大学 | Equivalent LHM (Left Handed Material) patch antenna of split ring resonators |
| CN102124382A (en) * | 2008-06-19 | 2011-07-13 | 雷文布里克有限责任公司 | Optical metapolarizer device |
| CN103427159A (en) * | 2013-08-13 | 2013-12-04 | 江苏大学 | Multilayer composite frame patch antenna with left-handed materials of compound lattice structures |
| CN103682642A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Microstrip patch antenna |
| CN203950926U (en) * | 2014-07-07 | 2014-11-19 | 南京邮电大学 | A kind of micro-strip paster antenna |
| CN105098344A (en) * | 2015-09-06 | 2015-11-25 | 西安电子科技大学 | Multi-notch ultra-wide band antenna with mechanically adjusted metasurfaces |
| CN107359421A (en) * | 2017-07-13 | 2017-11-17 | 厦门大学 | LHM based on goat's horn shape basic cell structure |
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-
2019
- 2019-05-13 CN CN201910392503.0A patent/CN110061358B/en active Active
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| US20090262766A1 (en) * | 2006-10-19 | 2009-10-22 | Houtong Chen | Active terahertz metamaterial devices |
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| CN103682642A (en) * | 2012-08-31 | 2014-03-26 | 深圳光启创新技术有限公司 | Microstrip patch antenna |
| CN103427159A (en) * | 2013-08-13 | 2013-12-04 | 江苏大学 | Multilayer composite frame patch antenna with left-handed materials of compound lattice structures |
| CN203950926U (en) * | 2014-07-07 | 2014-11-19 | 南京邮电大学 | A kind of micro-strip paster antenna |
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| CN108899656A (en) * | 2018-06-28 | 2018-11-27 | 西安电子科技大学 | A kind of Salisbury suction wave screen loading FSS |
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