CN104538721A - Metamaterial harmonic oscillator based on metal-structure LC resonator and application thereof - Google Patents
Metamaterial harmonic oscillator based on metal-structure LC resonator and application thereof Download PDFInfo
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- CN104538721A CN104538721A CN201410852380.1A CN201410852380A CN104538721A CN 104538721 A CN104538721 A CN 104538721A CN 201410852380 A CN201410852380 A CN 201410852380A CN 104538721 A CN104538721 A CN 104538721A
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Abstract
The invention discloses a metamaterial harmonic oscillator based on a metal-structure LC resonator and application of the metamaterial harmonic oscillator. The metamaterial harmonic oscillator is a conductive metal body provided with a notch. An inductor part L of the metamaterial harmonic oscillator is made of conductive metal material, a capacitor part C of the metamaterial harmonic oscillator is composed of the notch, and the two end faces of an inductor L serve as electrodes of the capacitor part C. The shape of the notch is random. The number of metamaterial harmonic oscillators, applied to microwave devices, based on the metal-structure LC resonator is at least one. By introduction of the metamaterial harmonic oscillator, miniaturization and integration of various microwave devices such as a filter, a coupler and a multiplexer are achieved, and meanwhile the transmission efficiency of the microwave devices is improved.
Description
Technical field
The invention belongs to Material Field, relate to a kind of Meta-material harmonic oscillator based on metal structure LC resonator and application thereof.
Background technology
The miniaturization of microwave device and the integrated target being electronics and information industry and constantly will pursuing all the time.Such as numerous microwave device such as filter, coupler and multiplexer all has the transmission of electromagnetic signal selectivity and wants the functions such as inhibition zone external signal passes through, and the core parts that these microwave devices all will be used are exactly resonator.Most of resonators of current use are all made by the metal cavitg of rectangle or other shapes and the larger cylinder shape medium of volume, and they generally all occupy larger volume, all the more so when low frequency.In order to realize good frequency selective characteristic, passing through of clutter reduction signal, generally will combine several such harmonic oscillators use.Therefore, the various microwave devices be made up of several such resonators must occupy larger volume, and this just gives the miniaturization of microwave device, integratedly brings very large problem.
Nearly ten years, the appearance of Meta Materials makes the miniaturization of various microwave device and integratedly demonstrates unlimited beautiful scenery.Meta Materials is arranged by artificial electromagnetic resonant element structural periodicity and forms, and the response of each resonant element electromagnetic field to external world can show as electric resonance, magnetic resonance or electromagnetic resonance, respectively in order to realize equivalent negative dielectric constant and the negative magnetoconductivity of macroscopic view.The periodic arrangement with the harmonic oscillator of negative permittivity and negative magnetoconductivity just can realize electromagnetic left-handed transmission characteristic, thus realizes the many unusual function that natural material cannot have.Atom in crystal or molecule is instead of because Meta Materials employs larger resonant element (compared with atom and molecule), thus--ultraviolet--infrared frequency range drops to light wave--microwave frequency band that makes operating frequency from x-ray.
But the research at present about Meta Materials concentrates on the macro-effect of a large amount of artificial electromagnetic harmonic oscillator periodic arrangement mostly, also considerably less to research and apply that is several or even such Meta-material harmonic oscillator.
Summary of the invention
The object of this invention is to provide a kind of Meta-material harmonic oscillator based on metal structure LC resonator and application thereof.
Meta-material harmonic oscillator provided by the invention is conductive metallic material body; Described body has a breach.
Described conductive metallic material specifically can be copper.
The inductance L part of described Meta-material harmonic oscillator is made up of described conductive metallic material, and electric capacity C part is made up of described breach, and two end faces of described inductance L part are as the electrode of shown electric capacity C part.
The shape of described breach is arbitrary shape.
The structure of described inductance L part and electric capacity C part composition is equivalent to LC resonance to electromagnetic response.
In addition, the microwave device of the Meta-material harmonic oscillator provided containing the invention described above and this Meta-material harmonic oscillator, making the application in microwave device, also belong to protection scope of the present invention.Wherein, the number of described Meta-material harmonic oscillator is at least one, specifically can be two.Described microwave device specifically can be filter, coupler or multiplexer.
The operating state of metal structure resonator has electric resonance, magnetic resonance and electromagnetic resonance three kinds of states, the resonance frequency that different resonance conditions is corresponding different.In concrete implementation process, any one resonance condition of Meta-material harmonic oscillator can be selected.The resonance frequency that the electromagnetic resonance (LC resonance) of metal structure resonator is corresponding is minimum, generally chooses the coupled resonance state that it is Meta-material harmonic oscillator.
For Meta Materials electromagnetic resonance provided by the invention, they are a good electromagnetic resonator inherently.And, the harmonic oscillator formed with traditional material and conventional method is compared, the Meta-material harmonic oscillator of these engineer has that quality factor are high, the feature of sub-wavelength resonance, they can be confined to long-time periodic swinging efficiently in a very little scope incident electromagnetic wave, thus can bring breakthrough progress in the problems such as the miniaturization of various microwave device, integrated and efficiency of transmission.
For single Meta-material harmonic oscillator, when external electromagnetic wave frequency is equal with the resonance frequency of this harmonic oscillator, electromagnetic energy mainly concentrates on vibration in Meta-material harmonic oscillator and cannot continue forward direction, just defines thus one " trap wave point ".Electromagnetic energy afterwards is almost all reflected back and not transmissive.But if having several Meta-material harmonic oscillator on this direction of propagation, situation is just made a world of difference.Such as, when two Meta-material harmonic oscillator are successively placed on direction of wave travel, two harmonic oscillators can be divided into overcoupling, Critical Coupling and undercoupling three kinds of situations according to the difference of their spacing.When Critical Coupling, electromagnetic wave can be coupled to exit end completely, and efficiency of transmission is also very high, can be considered total transmissivity when disregarding loss.When undercoupling, still there is higher efficiency of transmission at resonance frequency place, but time compared with Critical Coupling, efficiency of transmission declines many.When overcoupling, can produce respectively lower than with two resonant frequency points higher than former resonance frequency.Coupling between multiple Meta-material harmonic oscillator of the present invention can adopt any one situation.
Compared with prior art, the present invention has following beneficial effect:
The invention solves the problems such as size is large, integrated level is low when using in various microwave device with the resonator of traditional material, conventional method manufacture, adopt metal structure LC resonator to realize Meta-material harmonic oscillator.These Meta-material harmonic oscillator have that quality factor are high, the feature of sub-wavelength resonance, they can be confined to long-time periodic swinging efficiently in a very little scope incident electromagnetic wave, thus in the problems such as the miniaturization of various microwave device, integrated and efficiency of transmission, have huge advantage.
Accompanying drawing explanation
Fig. 1 be based on two Meta-material harmonic oscillator of metal structure LC resonator between the schematic diagram of micro-wave coupler that formed of critical electromagnetic resonance coupling.
Fig. 2 is the simulation result figure of micro-wave coupler in embodiment 1.
Fig. 3 be based on two Meta-material harmonic oscillator of metal structure LC resonator between the schematic diagram of dual-frequency point microwave band-elimination filter that formed of electromagnetic resonance coupling
Fig. 4 is the simulation result figure of dual-frequency point microwave band-elimination filter in embodiment 2.
Embodiment
Below in conjunction with specific embodiment, the present invention is further elaborated, but the present invention is not limited to following examples.Described method is conventional method if no special instructions.Described raw material all can obtain from open commercial sources if no special instructions.
Embodiment 1
Fig. 1 be based on two Meta-material harmonic oscillator of metal structure LC resonator between the schematic diagram of micro-wave coupler that formed of critical electromagnetic resonance coupling.The Meta-material harmonic oscillator based on metal structure LC resonator shown in figure is the opening resonance loop structure of the metallic copper adopting printed-board technology to print.This Meta-material harmonic oscillator is made up of copper body, and copper body has a breach.The shape of this Meta-material harmonic oscillator is the copper ring with a breach.The length of side of copper ring is 4mm, and wide is 0.5mm, and breach is 0.3mm.Barbed portion is equivalent to electric capacity C, and other metallic member is equivalent to inductance L, material is thus formed the LC resonator of a standard.In Fig. 1, the thickness of metallic plate is 1mm, has Radius to be the circular hole of 2.5mm, with the opposite side enabling electromagnetic wave be coupled to metallic plate at its center.If only have circular hole to participate in coupling, the electromagnetic wave that it can be coupled to opposite is faint in the extreme.But if respectively put a Meta-material harmonic oscillator based on open metal ring structure in the both sides of metallic plate circular hole, stiffness of coupling now as shown in Figure 2, in the scope of 9.5-10GHz, go by the opposite that nearly all electromagnetic wave can both be coupled to circular hole.In addition, compared with the operation wavelength of the coupler realized, the size of Meta-material harmonic oscillator used is here far smaller than its operation wavelength, namely the requirement of sub-wavelength dimensions is met, so the miniaturized micro-wave coupler be coupled to form between successfully achieving based on the Meta-material harmonic oscillator of becket structure.
Embodiment 2
Fig. 3 be based on two Meta-material harmonic oscillator of metal structure LC resonator between the schematic diagram of dual-frequency point microwave band-elimination filter that formed of electromagnetic resonance coupling.Meta-material harmonic oscillator shown in figure is the opening resonance loop structure of the metallic copper adopting printed-board technology to print.This Meta-material harmonic oscillator is made up of copper body, and copper body has a breach.The shape of this Meta-material harmonic oscillator is the copper ring with a breach.The length of side of copper ring is 5mm, and wide is 0.75mm, and breach is 1mm.Barbed portion is equivalent to electric capacity C, and other metallic member is equivalent to inductance L, material is thus formed the LC resonator of a standard.When distance between two resonators is 2mm, the transmission coefficient of the dual-frequency point band stop filter of formation as shown in Figure 4.There are two obvious trap wave points at 6.1GHz and 7.1GHz place in figure, thus just achieve high performance band stop filter.In addition, compared with the operation wavelength of the filter realized, the size of Meta-material harmonic oscillator used is here far smaller than its operation wavelength, namely the requirement of sub-wavelength dimensions is met, so the miniaturized microwave band-elimination filter be coupled to form between successfully achieving based on the Meta-material harmonic oscillator of becket structure.
Claims (7)
1. a Meta-material harmonic oscillator is conductive metallic material body;
Described body has a breach.
2. Meta-material harmonic oscillator according to claim 1, is characterized in that: described conductive metallic material is copper.
3. Meta-material harmonic oscillator according to claim 1 and 2, it is characterized in that: in described Meta-material harmonic oscillator, inductance L part is made up of described conductive metallic material, and electric capacity C part is made up of described breach, and two end faces of described inductance L part are as the electrode of shown electric capacity C part.
4. the microwave device containing the arbitrary described Meta-material harmonic oscillator of claim 1-3.
5. microwave device according to claim 4, is characterized in that: in described microwave device, and the number of Meta-material harmonic oscillator is at least one;
Described microwave device is filter, coupler or multiplexer.
6. in claim 1-3, arbitrary described Meta-material harmonic oscillator is making the application in microwave device.
7. application according to claim 6, is characterized in that: in described microwave device, and the number of Meta-material harmonic oscillator is at least one;
Described microwave device is filter, coupler or multiplexer.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305091A (en) * | 2015-10-13 | 2016-02-03 | 复旦大学 | Tunable gradient meta-surface-based reflection electromagnetic wave modulator and design method thereof |
| CN107404004A (en) * | 2016-05-19 | 2017-11-28 | 深圳超级数据链技术有限公司 | Meta Materials, antenna reflective face, the control method of Meta Materials and device |
| CN109728442A (en) * | 2018-11-19 | 2019-05-07 | 浙江大学 | A kind of solid-state ELECTROMAGNETIC VACUUM material based on electric resonance unit |
| CN112002967A (en) * | 2020-07-20 | 2020-11-27 | 重庆邮电大学 | Terahertz low-pass angle filter with back-symmetric open square groove |
| CN114512556A (en) * | 2020-11-16 | 2022-05-17 | 北京索通新动能科技有限公司 | Photoelectric detector based on asymmetric metamaterial structure |
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| CN201450087U (en) * | 2009-07-09 | 2010-05-05 | 华南理工大学 | Micro-strip open loop resonator filter capable of controlling electromagnetic coupling |
| KR20120068571A (en) * | 2010-12-17 | 2012-06-27 | 한국전자통신연구원 | Broadband metamaterial and control method of broadband metamaterial with controllable effective constitutive |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201450087U (en) * | 2009-07-09 | 2010-05-05 | 华南理工大学 | Micro-strip open loop resonator filter capable of controlling electromagnetic coupling |
| KR20120068571A (en) * | 2010-12-17 | 2012-06-27 | 한국전자통신연구원 | Broadband metamaterial and control method of broadband metamaterial with controllable effective constitutive |
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| YUNSHENG GUO，JI ZHOU: "Total broadband transmission of microwaves through a subwavelength aperture by localized E-field coupling of split-ring resonators", 《OPTICS EXPRESS》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105305091A (en) * | 2015-10-13 | 2016-02-03 | 复旦大学 | Tunable gradient meta-surface-based reflection electromagnetic wave modulator and design method thereof |
| CN107404004A (en) * | 2016-05-19 | 2017-11-28 | 深圳超级数据链技术有限公司 | Meta Materials, antenna reflective face, the control method of Meta Materials and device |
| CN109728442A (en) * | 2018-11-19 | 2019-05-07 | 浙江大学 | A kind of solid-state ELECTROMAGNETIC VACUUM material based on electric resonance unit |
| CN109728442B (en) * | 2018-11-19 | 2020-10-16 | 浙江大学 | Solid electromagnetic vacuum material based on electric resonance unit |
| CN112002967A (en) * | 2020-07-20 | 2020-11-27 | 重庆邮电大学 | Terahertz low-pass angle filter with back-symmetric open square groove |
| CN114512556A (en) * | 2020-11-16 | 2022-05-17 | 北京索通新动能科技有限公司 | Photoelectric detector based on asymmetric metamaterial structure |
| CN114512556B (en) * | 2020-11-16 | 2023-11-03 | 北京索通新动能科技有限公司 | Photoelectric detector based on asymmetric metamaterial structure |
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Application publication date: 20150422 |