CN108199149A - A kind of double-T shaped left-handed material of single side - Google Patents
A kind of double-T shaped left-handed material of single side Download PDFInfo
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- CN108199149A CN108199149A CN201711489376.3A CN201711489376A CN108199149A CN 108199149 A CN108199149 A CN 108199149A CN 201711489376 A CN201711489376 A CN 201711489376A CN 108199149 A CN108199149 A CN 108199149A
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- handed material
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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
Abstract
The invention discloses a kind of double-T shaped left-handed material of single side, 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, the height of the medium substrate is 3~3.7mm, width is 1.3~2.0mm, thickness 0.5mm；The side of the medium substrate is coated with the copper facing of double-T shaped structure, and the horizontal line length in T-type structure is 1~1.7mm；Vertical line length is 2~2.8mm, the cellular construction expands extension along 3 D stereo direction and has been interconnected to form double-T shaped array of structures respectively, the direction of double-T shaped array of structures along the X-axis is set as preferable magnetic boundary condition PHC, perfact conductor boundary condition PEC is set as along Z-direction, electromagnetic wave is along Y direction, it is incident to double-T shaped inside configuration from left to right, setting energisation mode is encouraged for wave impedance.The left-handed material have the characteristics that broadband, low-loss, junior unit, it is simple in structure, be easy to make.
Description
Technical field
The present invention relates to Meta Materials fields, and in particular to a kind of double-T shaped left-handed material of single side.
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 the time of nearly more than ten years, left-handed material has obtained significant progress, various different designs types constantly by
It proposes.Generally, these structures can be divided into two types according to the incident direction of electromagnetic wave：One kind is parallel incident Jie of electromagnetic wave
Matter substrate form, such as " huge " character form structure, omega structure；Another kind is the parallel incident medium substrate form of electromagnetic wave, such as
I-shaped, grid-shaped structure etc..But vertical incidence structure has the shortcomings that apparent relative to parallel incidence, such as is easy to cause
Screen effect (screening effects), absorption loss (absorption loss) are larger etc..And these shortcomings are all real
With that environment avoids as possible in parallel incidence structure, and single side and two kinds two-sided can be divided by structure type.Two-sided structure
Due to all to carry out structure etching in the both sides of medium substrate, the difficulty of making is increased, while loss is also universal bigger than normal, also not
It is the first choice of utility structure.So the left-handed material structure of the parallel incidence of single side at this stage is the Main way of research.At present
Through there are a variety of single-sided structures, if the cross metal wire of Nasrin is to the left-handed material of structure, the magnetic resonators of Chen Chunhui with
Left-handed material that coplanar short plain conductor is combined etc..And these structures in the prevalence of complicated, narrow bandwidth, loss greatly with
And volume it is big a series of problems, such as, seriously limit the application and development of left-handed material.Therefore produce broadband, low-loss,
The Novel single-face left-handed material of junior unit is imperative.
Invention content
The purpose of the invention is to overcome deficiency of the prior art, provide a kind of with broadband, low-loss, small list
The double-T shaped left-handed material of Novel single-face that is first, simple in structure, being easy to making.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of double-T shaped left-handed material of single side, including the cellular construction being made of medium substrate, medium substrate is by dielectric constant
It is made of 3~3.8, loss tangent value of 0.0004 Rogers planks, the height of the medium substrate is 3~3.7mm, width
For 1.3~2.0mm, thickness 0.5mm；The side of the medium substrate is coated with the copper facing of double-T shaped structure, the horizontal stroke in T-type structure
Line length is 1~1.7mm；Vertical line length is 2~2.8mm, and the cellular construction expands extension phase respectively along 3 D stereo direction
It connects and is formed with double-T shaped array of structures, the direction of double-T shaped array of structures along the X-axis is set as preferable magnetic boundary condition
PHC is set as perfact conductor boundary condition PEC along Z-direction, and electromagnetic wave is incident to double-T shaped knot from left to right along Y direction
Inside structure, setting energisation mode is encouraged for wave impedance.
Further, the material for being similar to air between cellular construction by dielectric constant is connected with each other.It is described copper-plated
Width is 0.10~0.15mm, thickness 0.035mm.
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 9.99GHz~17.10GHz frequency ranges effective dielectric constant,
Equivalent permeability, refractive index real part are negative simultaneously, and absolute bandwidth money reaches 7.11GHz, and relative bandwidth reaches 52.49%, unit
Electric size is only 0.07, and down to 0.09dB, embody that the present invention protects is a kind of broadband, low-loss, small list for unit loss
The outstanding left-handed material of member.
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.
As depicted in figs. 1 and 2, the double-T shaped left-handed material of a kind of single side, including the cellular construction being made of medium substrate, sheet
Medium substrate is made by common Rogers RO4350 materials in embodiment, relative dielectric constant 3.48, and loss tangent value is
0.0004, medium substrate length b=3.36mm, width a=1.70mm, thickness 0.50mm, the side of medium substrate are coated with double T
The copper facing of type structure, the horizontal line length l1=1.40mm in T-shaped plated copper structure, vertical line length l2=2.42mm, other dimensionings
Very little parameter is as follows：S=0.26mm, the width of all copper-plated metal lines is 0.12mm, and plating copper thickness is 0.035mm.
The cellular construction of left-handed material is expanded according to 1x4x1 to three directions of 3-D walls and floor in the present embodiment, is formed
Array as shown in Fig. 2, its simulation architecture unit size is 0.535mm*6.05mm*3.36mm, passes through dielectric between cellular construction
The material that constant is similar to air is connected with each other, such as foam, two-sided sponge；Perimeter strip is carried out to the simulation unit structure in Fig. 2
The setting of part and energisation mode：Preferable magnetic boundary condition PHC is set as along the direction of X-axis, fore-and-aft clearance is set as 1.524mm,
Perfact conductor boundary condition PEC is set as along Z-direction, between the upper and lower away from 3.36mm is set as, electromagnetic wave is along Y direction, from a left side
It is incident on double-T shaped inside configuration to the right, setting energisation mode is encouraged for wave impedance, and the spacing of left and right is 6.75mm.The solid is tied
Structure is one-dimensional left-handed configuration, in the y-axis direction with left hand characteristic.
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 8.00GHz, and highest frequency is set as 18.00GHz, frequency interval 0.01GHz.It can from Fig. 3 (a)
Go out, S11 and S21 resonance points are located at 9.89GHz and 16.99GHz, and return loss can be seen that for -58.95dB. from Fig. 3 (b)
Mutation takes place in the phase of S21 at 9.98GHz, indicates the beginning of double negative regions, and the amplitude of S21 is big in passband
In -0.36dB, illustrate that the transmission loss of average each cellular construction is less than 0.09dB.
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,
Effective electromagnetic parameter can be extracted from S parameter：Effective dielectric constant, equivalent permeability, refractive index.By finding out three's reality
Portion 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 in 9.99GHz~17.10GHz simultaneously
It is negative, common frequency band is the left hand frequency range of double-T shaped structure.
1 effective electromagnetic parameter of table is with frequency variation tendency
| Effective electromagnetic parameter | Frequency/GHz |
| ε<0 | 9.99-17.24 |
| μ<0 | 9.99-17.10 |
| n<0 | 9.99-17.11 |
As shown in table 1, it can be seen that the left-handed material in 9.99GHz~17.10GHz frequency ranges effective dielectric constant, etc.
Effect magnetic conductivity, refractive index real part are negative simultaneously, and absolute bandwidth money reaches 7.11GHz, and relative bandwidth reaches 52.49%, unit electricity
Size is only 0.07, unit loss down to 0.09dB, embody the double-T shaped structure of Novel single-face be a kind of broadband, it is low-loss, small
The outstanding left-handed material of unit.
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 (3)
1. a kind of double-T shaped left-handed material of single side, which is characterized in that including the cellular construction being made of medium substrate, medium substrate
Be made of dielectric constant of 3~3.8, loss tangent value of 0.0004 Rogers planks, the height of the medium substrate for 3~
3.7mm, width are 1.3~2.0mm, thickness 0.5mm；The side of the medium substrate is coated with the copper facing of double-T shaped structure, T-shaped
Horizontal line length in structure is 1~1.7mm；Vertical line length is 2~2.8mm, and the cellular construction is distinguished along 3 D stereo direction
Expansion extension has been interconnected to form double-T shaped array of structures, and the direction of double-T shaped array of structures along the X-axis is set as preferable magnetic
Boundary condition PHC is set as perfact conductor boundary condition PEC along Z-direction, and electromagnetic wave is incident to from left to right along Y direction
Double-T shaped inside configuration, setting energisation mode are encouraged for wave impedance.
2. the double-T shaped left-handed material of a kind of single side according to claim 1, which is characterized in that pass through dielectric between cellular construction
The material that constant is similar to air is connected with each other.
3. the double-T shaped left-handed material of a kind of single side according to claim 1, which is characterized in that the copper-plated width is 0.10
~0.15mm, thickness 0.035mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711489376.3A CN108199149A (en) | 2017-12-30 | 2017-12-30 | A kind of double-T shaped left-handed material of single side |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711489376.3A CN108199149A (en) | 2017-12-30 | 2017-12-30 | A kind of double-T shaped left-handed material of single side |
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| CN108199149A true CN108199149A (en) | 2018-06-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598713A (en) * | 2018-04-02 | 2018-09-28 | 杭州电子科技大学 | A kind of single side left-handed material based on T shape metal strips and blocky left-handed material |
| CN113241531A (en) * | 2021-04-28 | 2021-08-10 | 大连理工大学 | Tunable array integrated broadband terahertz wave-absorbing resonator based on vanadium dioxide |
Citations (4)
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| US20120212375A1 (en) * | 2011-02-22 | 2012-08-23 | Depree Iv William Frederick | Quantum broadband antenna |
| CN103296409A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Broadband metamaterial antenna housing and antenna system |
| CN104241866A (en) * | 2014-07-10 | 2014-12-24 | 杭州电子科技大学 | Broadband low-consumption junior unit left-handed material based on double crosses |
| CN106450795A (en) * | 2016-10-21 | 2017-02-22 | 西北工业大学 | Wave-absorbing structure of double-frequency polarized insensitive monolayer metamaterial |
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2017
- 2017-12-30 CN CN201711489376.3A patent/CN108199149A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120212375A1 (en) * | 2011-02-22 | 2012-08-23 | Depree Iv William Frederick | Quantum broadband antenna |
| CN103296409A (en) * | 2012-02-29 | 2013-09-11 | 深圳光启创新技术有限公司 | Broadband metamaterial antenna housing and antenna system |
| CN104241866A (en) * | 2014-07-10 | 2014-12-24 | 杭州电子科技大学 | Broadband low-consumption junior unit left-handed material based on double crosses |
| CN106450795A (en) * | 2016-10-21 | 2017-02-22 | 西北工业大学 | Wave-absorbing structure of double-frequency polarized insensitive monolayer metamaterial |
Non-Patent Citations (2)
| Title |
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| STEFAN LINDEN ETC.: "Photonic Metamaterials: Magnetism at Optical Frequencies", 《IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS》 * |
| 朱忠奎 等: "一种新型的树枝状负磁导率材料微带天线", 《物理学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108598713A (en) * | 2018-04-02 | 2018-09-28 | 杭州电子科技大学 | A kind of single side left-handed material based on T shape metal strips and blocky left-handed material |
| CN113241531A (en) * | 2021-04-28 | 2021-08-10 | 大连理工大学 | Tunable array integrated broadband terahertz wave-absorbing resonator based on vanadium dioxide |
| CN113241531B (en) * | 2021-04-28 | 2022-04-12 | 大连理工大学 | Tunable array integrated broadband terahertz wave-absorbing resonator based on vanadium dioxide |
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