CN108199148A - A kind of two-dimensional left-handed material of hollow - Google Patents
A kind of two-dimensional left-handed material of hollow Download PDFInfo
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- CN108199148A CN108199148A CN201711489368.9A CN201711489368A CN108199148A CN 108199148 A CN108199148 A CN 108199148A CN 201711489368 A CN201711489368 A CN 201711489368A CN 108199148 A CN108199148 A CN 108199148A
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- hollow
- medium substrate
- handed material
- cellular construction
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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
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of two-dimensional left-handed materials of hollow, including the cellular construction being made of medium substrate, medium substrate is made of dielectric constant of 3~3.8, loss tangent value of 0.0004 Rogers planks, and the medium substrate is square, the length of side is 1.65mm, thickness 0.5mm；The side of the medium substrate is coated with the copper facing of hollow structure, symmetrical structure and four apex angles of hollow structure, which are equipped with, centered on the hollow structure is open, the cellular construction expands extension along 3 D stereo direction and has been interconnected to form hollow array of structures respectively, the hollow array of structures is set as preferable magnetic boundary condition PHC along X-direction, the direction of Z axis is set as perfact conductor boundary condition PEC, electromagnetic wave is incident along Y direction, energisation mode is set to be encouraged for wave impedance, there is left hand characteristic on Y and Z axis both direction.
Description
Technical field
The present invention relates to Meta Materials fields, and in particular to a kind of two-dimensional left-handed material of hollow.
Background technology
Veselago proposes the concept of left-handed material in nineteen sixty-eight, and points out its dielectric constant and magnetic conductivity in certain electricity
It is simultaneously negative in magnetic wave frequency range, and many unusual with negative refraction, perfect lens effect, inverse Doppler effects etc.
Electromagnetic property.Just because of these special electromagnetic properties, just so that left-handed material is in optical imagery, antenna system, microwave
The fields such as device and electromagnetism stealth have extensive and important application.However this theoretical ability after 30 years is by Smith
It is realized for the first time by the form of plain conductor and split ring resonator combination.Henceforth, the research of left-handed material, which has been gone on, flies
Speed develops to obtain fast traffic lane.
In recent years, the research direction of left-handed material mainly has：On the one hand be multidimensional number, multiband left-handed material novel knot
The design and realization of structure, such as double Z-shaped metal strip structures, cross ring type structure are open twin nuclei in the same direction；On the other hand it is left hand
Application of the material in microwave, field of antenna.But often there are complicated, narrow bandwidth, damages for existing multidimensional number left-handed material
The problems such as consumption is greatly and circuit board bilateral prints, so function admirable, novel multi-vitamin left-handed material knot simple in structure, easy to process
It is configured to an important research direction.
Invention content
The purpose of the invention is to overcome deficiency of the prior art, a kind of hollow with excellent performance is provided
Two-dimensional left-handed material
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of two-dimensional left-handed material of hollow, including the cellular construction being made of medium substrate, medium substrate is by dielectric
Constant is made of 3~3.8, loss tangent value of 0.0004 Rogers planks, and the medium substrate is square, and the length of side is
1.65mm, thickness 0.5mm；The side of the medium substrate is coated with the copper facing of hollow structure, during the hollow structure is
Heart symmetrical structure and four apex angles of hollow structure, which are equipped with, to be open, and the cellular construction is expanded respectively along 3 D stereo direction to be prolonged
It stretches and has been interconnected to form hollow array of structures, the hollow array of structures is set as preferable magnetic boundary along X-direction
Condition PHC, the direction of Z axis are set as perfact conductor boundary condition PEC, and electromagnetic wave is along Y direction incidence, setting energisation mode
Wave impedance encourages, and has left hand characteristic on Y and Z axis both direction.
Further, the hollow structure length of side 1.25mm.
Further, the material for being similar to air between cellular construction by dielectric constant is connected with each other.
Further, the copper-plated width is 0.1mm, thickness 0.07mm.
Compared with prior art, advantageous effect caused by technical scheme of the present invention is：
By simulation analysis obtain left-handed material of the present invention in 18.66GHz~35.67GHz frequency ranges effective dielectric constant,
Equivalent permeability, refractive index real part are negative, absolute bandwidth 17.01GHz simultaneously, and relative bandwidth 62.62%, unit is lost low
To 0.17dB, the excellent performance of the two-dimensional left-handed material with the hollow centrosymmetric structure is embodied.
Description of the drawings
Fig. 1 is left-handed material cellular construction of the present invention and dimensional structure schematic diagram.
Fig. 2 is cellular construction figure of the left-handed material for emulation.
Fig. 3 (a) and Fig. 3 (b) is respectively the amplitude simulation result of S parameter and phase simulation result.
Fig. 4 (a), (b), (c) be respectively effective dielectric constant, magnetic conductivity, refractive index electromagnetic parameter analogous diagram.
Fig. 5 is effective electromagnetic parameter comparison diagram.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
The present invention protects a kind of two-dimensional left-handed material of hollow, including the cellular construction being made of medium substrate, this reality
It applies medium substrate in example to be made by Ro gers RO4350 materials, relative dielectric constant 3.48, loss tangent value 0.0004,
Square medium substrate length of side a=1.65mm, thickness 0.50mm, the side of medium substrate are coated with the copper facing of hollow structure,
Symmetrical structure and four apex angles of hollow structure, which are equipped with, centered on hollow structure is open, hollow structure length l=
1.25mm, the width of all copper-plated metal lines is 0.1mm, and plating copper thickness is 0.07mm, and structure size is as shown in Figure 1.
Two-dimensional left-handed material cellular construction is printed on medium substrate unilateral side in the present embodiment, is sat according to 1x3x1 to three-dimensional
Three directions expansion of parameter, forms array, as shown in Fig. 2, its simulation architecture unit size is 0.57mm*4.95mm*
4.95mm, the material for being similar to air between cellular construction by dielectric constant is connected with each other, such as foam, two-sided sponge；To Fig. 2
In simulation unit structure carry out the setting of boundary condition and energisation mode：Preferable magnetic boundary condition is set as along X-direction
PHC, fore-and-aft clearance are set as 1.524mm, and perfact conductor boundary condition PEC is set as along Z-direction, between the upper and lower away from being set as
1.65mm, electromagnetic wave is incident along Y direction, and hollow inside configuration is incident on from Port1 ports, is emitted from Port2 ports, this
When setting energisation mode for wave impedance encourage, left and right spacing be 4.95mm.Therefore the hollow centrosymmetric structure is a kind of
Two-dimentional left-handed configuration has left hand characteristic on Y and Z axis both direction.
Shown in the S parameter amplitude curve and phase curve such as Fig. 3 (a) that are obtained by HFSS softwares and Fig. 3 (b), during emulation
Low-limit frequency is set as 17.00GHz, and highest frequency is set as 38.00GHz, and frequency interval can from Fig. 3 (a) for 0.01GHz.
Go out, S11 and S21 resonance points are located at 18.88GHz and 36.13GHz, and return loss is -56.32dB.It can from Fig. 3 (b)
Go out, mutation takes place in the phase of S21 at 18.62GHz, indicates the beginning of double negative regions, and in passband S21 amplitude
More than -0.51dB, illustrate that the transmission loss of average each cellular construction is less than 0.17dB.
Smith proposes S parameter method within 2005, it can accurately and rapidly be extracted by the phase and amplitude of S parameter
The out effective electromagnetic parameter of left-handed material has been commonly utilized in left-handed material field now.By one section of MATLAB code,
The present invention can extract effective electromagnetic parameter from S parameter：Effective dielectric constant, equivalent permeability, refractive index.By finding out
Three's real part is simultaneously negative ghz area, to determine the range of left hand frequency range.
As shown in Fig. 4 (a) to Fig. 5, effective dielectric constant, magnetic conductivity, refractive index are same in 18.66GHz~35.67GHz
When be negative, common frequency band is the left hand frequency range of hollow two-dimensional structure.
1 effective electromagnetic parameter of table is with frequency variation tendency
| Effective electromagnetic parameter | Frequency/GHz |
| ε<0 | 18.66-35.67 |
| μ<0 | 18.66-35.84 |
| n<0 | 18.66-35.70 |
As shown in table 1, it can be seen that structure of the present invention in 18.66GHz~35.67GHz frequency ranges effective dielectric constant, etc.
Effect magnetic conductivity, refractive index real part be simultaneously negative, absolute bandwidth 17.01GHz, relative bandwidth 62.62%, unit be lost down to
0.17dB embodies the single side two-dimensional left-handed material that hollow centrosymmetric structure is a kind of function admirable.
The present invention is not limited to embodiments described above.The description of specific embodiment is intended to describe and be said above
Bright technical scheme of the present invention, above-mentioned specific embodiment is only schematical, is not restricted.This is not being departed from
In the case of invention objective and scope of the claimed protection, those of ordinary skill in the art may be used also under the enlightenment of the present invention
The specific transformation of many forms is made, within these are all belonged to the scope of protection of the present invention.
Claims (4)
1. a kind of two-dimensional left-handed material of hollow, which is characterized in that including the cellular construction being made of medium substrate, medium base
Plate is made of dielectric constant of 3~3.8, loss tangent value of 0.0004 Rogers planks, and the medium substrate is square,
The length of side is 1.65mm, thickness 0.5mm；The side of the medium substrate is coated with the copper facing of hollow structure, the hollow knot
Symmetrical structure and four apex angles of hollow structure are equipped with opening centered on structure, and the cellular construction is distinguished along 3 D stereo direction
Expansion extension has been interconnected to form hollow array of structures, and the hollow array of structures is set as preferable along X-direction
Magnetic boundary condition PHC, the direction of Z axis are set as perfact conductor boundary condition PEC, and electromagnetic wave is encouraged along Y direction incidence, setting
Mode is encouraged for wave impedance, has left hand characteristic on Y and Z axis both direction.
A kind of 2. two-dimensional left-handed material of hollow according to claim 1, which is characterized in that the hollow structure length of side
1.25mm。
3. a kind of two-dimensional left-handed material of hollow according to claim 1, which is characterized in that pass through Jie between cellular construction
The material that electric constant is similar to air is connected with each other.
4. a kind of two-dimensional left-handed material of hollow according to claim 1, which is characterized in that the copper-plated width is
0.1mm, thickness 0.07mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489368.9A CN108199148A (en) | 2017-12-30 | 2017-12-30 | A kind of two-dimensional left-handed material of hollow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489368.9A CN108199148A (en) | 2017-12-30 | 2017-12-30 | A kind of two-dimensional left-handed material of hollow |
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| Publication Number | Publication Date |
|---|---|
| CN108199148A true CN108199148A (en) | 2018-06-22 |
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| CN201711489368.9A Pending CN108199148A (en) | 2017-12-30 | 2017-12-30 | A kind of two-dimensional left-handed material of hollow |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100223798A1 (en) * | 2008-11-13 | 2010-09-09 | Darlene Zimmerman | Unique numbering system for rulers, squares and tools for both right and left handed users |
| FR2973586A1 (en) * | 2011-03-31 | 2012-10-05 | Ecole Superieure Electronique De L Ouest Eseo | ANTENNA STRUCTURES COMBINING OPTIMIZED METAMATERIALS FOR THE UHF-RFID BAND |
| CN105140652A (en) * | 2015-09-17 | 2015-12-09 | 上海大学 | Chiral metamaterial micro unit structure with 90-degree polarization deflection characteristic |
| 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 |
-
2017
- 2017-12-30 CN CN201711489368.9A patent/CN108199148A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100223798A1 (en) * | 2008-11-13 | 2010-09-09 | Darlene Zimmerman | Unique numbering system for rulers, squares and tools for both right and left handed users |
| FR2973586A1 (en) * | 2011-03-31 | 2012-10-05 | Ecole Superieure Electronique De L Ouest Eseo | ANTENNA STRUCTURES COMBINING OPTIMIZED METAMATERIALS FOR THE UHF-RFID BAND |
| CN105140652A (en) * | 2015-09-17 | 2015-12-09 | 上海大学 | Chiral metamaterial micro unit structure with 90-degree polarization deflection characteristic |
| 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 |
Non-Patent Citations (2)
| Title |
|---|
| XIANG WAN ETC.: "Horn Antenna With Reconfigurable Beam- Refraction and Polarization Based on Anisotropic Huygens Metasurface", 《IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION》 * |
| 王宝 等: "一种新型宽频低损左手材料设计", 《激光与光电子学进展》 * |
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