CN105958946A - Triple-frequency microwave modulation method and apparatus based on electrically-regulated electromagnetically-induced transparency like effect - Google Patents
Triple-frequency microwave modulation method and apparatus based on electrically-regulated electromagnetically-induced transparency like effect Download PDFInfo
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- CN105958946A CN105958946A CN201610247125.3A CN201610247125A CN105958946A CN 105958946 A CN105958946 A CN 105958946A CN 201610247125 A CN201610247125 A CN 201610247125A CN 105958946 A CN105958946 A CN 105958946A
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- switching diode
- induced transparency
- magnetic resonance
- metallic copper
- regulation
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C7/00—Modulating electromagnetic waves
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention relates to a triple-frequency microwave modulation method and apparatus based on electrically-regulated electromagnetically-induced transparency like effect. According to the invention, a switching diode is introduced into a magnetic resonance unit; in an operating frequency range, feed is applied onto two ends of the switching diode, and voltage is adjusted to change the conductivity of the switching diode and to allow the switching diode to be switched between two states, i.e., an on state and an off state, so the intensity of magnetic resonance is influenced; and when the switching diode is in the off state, strong magnetic resonance is coupled with electric resonance to induce the electromagnetically-induced transparency like effect, so absorption of electromagnetic wave beams is suppressed and electromagnetic wave transmission is greatly improved. In designing of the microwave modulation apparatus, the diode is utilized for induction and control of the electromagnetically-induced transparency like effect; so great electromagnetic transmission can be realized in designing of operating frequency points, and dynamic adjustability of three frequency points is obtained. The operation frequency of the apparatus can be adjusted by changing the geometric size of a metal structure.
Description
Technical field
The invention belongs to a kind of voltage modulated microwave transmission method of three frequency work, relate to a kind of based on electricity regulation and control class electricity
Three frequency microwave modulator approach and the devices that magnetic induction is transparent.
Background technology
Tunable microwave device is to utilize the material of Parameter adjustable or components and parts to control the device of microwave signal amplitude or phase place
Part, adjustable device mainly includes the new materials such as semiconductor diode, ferrite and Graphene.Tunable microwave device is
The basis of a series of devices such as attenuator, amplitude modulator, responding to switch design, in microwave communication, the aspect such as filtering has all
Many application.But all there is the problems such as modulating frequency is single, modulation amplitude is more weak in the tunable microwave device of present stage, seriously
Have impact on the actual application of device just realizes the high tunable microwave device of a multiple-frequency operation, modulation contrast
It is particularly important.The quantum optices phenomenon of some novelties such as electromagnetic induced transparency effect etc. are the most micro-at some in recent years
Structural material is achieved, the quantum optices frequency spectrum that these are peculiar is carried out analogy realization and is regulated to us and carries
The new approaches that electromagnetic wave propagation controls are supplied.The most relevant research focuses primarily upon several aspect: (1) tastes
Try to be arranged on semiconductor substrate as electric resonance gold bar band according to certain design, add at metal band two ends
Enter feed, by voltage-regulation, in bigger frequency bandwidth, realize amplitude modulation(PAM) and phase-modulation [literary composition largely
Offer 1-2, H.-T.Chen, W.J.Padilla, J.M.O.Zide, A.C.Gossard, A.J.Taylor, and R.D.
Averitt,"Active terahertz metamaterial devices,"Nature 444,597(2006).H.-T.Chen,J.F.
O'Hara,A.K.Azad,A.J.Taylor,R.D.Averitt,D.B.Shrekenhamer,and W.J.Padilla,"A
metamaterial solid-state terahertz phase modulator,"Nat Photon 2,295(2008)]；(2) utilize
The optical property that bidimensional stratified material Graphene is unique, is cut into monoblock periodic arrangement on substrate by its line, and regulation is single
The live width of block Graphene can strengthen its INFRARED ABSORPTION, and realizes bigger bandwidth [document 3, Y.Fan, N.-H.Shen, T.
Koschny,and C.M.Soukoulis,"Tunable Terahertz Meta-Surface with Graphene
Cut-Wires,"ACS Photonics 2,151(2015)].It is humorous that the most existing design is physically based on artificial Prague
Shaking or local resonance, modulation effect depends on the performance of artificial structure's harmonic oscillator, therefore size and the character to material
There is strict restriction.But in actual applications, the Aurum metallicum of high-quality, the difficulty of processing such as Graphene is bigger, relatively costly,
The existence of error makes effect often relatively big with theory expectation gap, and the stability of designed result limits border in fact and uses.
Summary of the invention
Solve the technical problem that
In place of the deficiencies in the prior art, the present invention proposes a kind of based on electricity regulation and control class electromagnetic induced transparency three
Frequently microwave modulator approach and device, solves microwave modulating device structure complicated, and modulating frequency is single, and modulation effect is paid no attention to
The problem having a strong impact on actual application such as think.
Technical scheme
A kind of three frequency microwave modulator approaches based on electricity regulation and control class electromagnetic induced transparency, it is characterised in that step is as follows: will
The parallel circuit in series of switching diode and battery is in magnon circuit, when switching diode is in the conduction state,
The magnetic resonance making magnon dies down, when switching diode is closed so that the magnetic resonance of magnon becomes strong,
Becoming strong magnetic resonance and electric resonance pattern to intercouple induction class electromagnetic induced transparency phenomenon, the absorption of electromagnetic beam will be by
Suppression, Electromgnetically-transparent is greatly enhanced；Described battery uses variable voltage source.
A kind of realization regulation class electromagnetic induced transparency spectral line using described modulator approach realizes microwave modulating device, and it is special
Levy and be to include that the first metallic copper bar 1 and a pair metallic copper bar 2 form ribbon structure, the polarization vertical metal of incidence wave
Strip direction；One variable voltage source E and switching diode D；Switching diode D is embedded in a pair metallic copper bar 2
Between, utilize the state of feed regulation switching diode, affect the power of metal double-rod magnetic resonance, induce class electromagnetism sense
Transparency Phenomenon is answered to realize very big absorbance；The other end serial adjustable potential source E of a pair metallic copper bar 2.
Described metallic copper bar uses lossy metallic copper.
Beneficial effect
A kind of based on electricity regulation and control class electromagnetic induced transparency three frequency microwave modulator approach and the devices that the present invention proposes, at gold
Belonging to insertion switch diode in structure, Induction Control class electromagnetic induced transparency effect realizes the design of three frequency microwave modulation and thinks
Road and realization rate.Utilizing the switching diode regulation and control magnetic resonance mode intensity applying feed, automatically controlled class electromagnetic induction is saturating
Bright phenomenon is the key technical feature of the present invention.Microwave polarization vertical drive metal structure can excite phasmon resonance
Pattern, mainly includes electric resonance unit and magnetic resonance unit, and the transmission to microwave effectively regulates and controls to need at magnetic
Insertion switch diode in resonant element.In operating frequency range, apply feed at switching diode two ends, pass through
Voltage-regulation, thus it is possible to vary the conduction of switching diode so that it is between " conducting " and "off" two states
Phase in version mutually, thus affect the power of magnetic resonance.When diode is off, stronger magnetic resonance is humorous with electricity
Pattern of shaking intercouples and induces class electromagnetic induced transparency phenomenon, and the absorption of electromagnetic beam will be suppressed, and Electromgnetically-transparent obtains
To greatly strengthening.The design of this microwave modulating device utilizes diode induced and controls class electromagnetic induced transparency phenomenon,
Design work Frequency point is capable of great electromagnetic transmission, and has the dynamic adjustable feature of three frequencies.By changing
The physical dimension of metal band structure, can be with the operating frequency of adjusting means.
The present invention has following effect and an advantage:
1. the present invention realizes class electromagnetic induced transparency phenomenon based on metal structure resonance, utilizes switching diode conduction pair
The dependence of voltage, is changed the generation of induction class electromagnetic induced transparency phenomenon, thus realizes three by diode state
The microwave transmission modulation of frequency.
2. the present invention needs to prepare the sample of corresponding size and structure, and process technology is ripe, and cost is controlled, can realize height
The microwave modulation of efficiency, stable performance.
3. regulating voltage in the present invention relatively low, distribution is narrower, it is possible to regulate the conducting of switching diode expeditiously
Property, and then realize microwave transmission intensity at three frequencies is continuously adjusted, save the energy, safe and reliable.
Accompanying drawing explanation
Fig. 1 is the theory structure signal of the present invention three frequency microwave modulator approaches based on electricity regulation and control class electromagnetic induced transparency
Figure；
Fig. 2 is the transmission curve of the present invention three frequency microwave modulator approaches based on electricity regulation and control class electromagnetic induced transparency.
Fig. 3 is the present invention three frequency microwave modulator approach case schematic diagrams based on electricity regulation and control class electromagnetic induced transparency；
Fig. 4 is the present invention three frequency microwave modulator approach case pictorial diagram based on electricity regulation and control class electromagnetic induced transparency；
Fig. 5 is that the present invention three frequency microwave modulator approach cases based on electricity regulation and control class electromagnetic induced transparency are under different voltages
Transmission curve.
Fig. 6 three frequency microwave modulator approach cases based on electricity regulation and control class electromagnetic induced transparency that are the present invention 4.81GHz,
Microwave transmission modulation variation curve at tri-working frequency points of 5.25GHz and 5.62GHz.
Detailed description of the invention
In conjunction with embodiment, accompanying drawing, the invention will be further described:
The theory structure of the present invention realizes such as accompanying drawing 1: under the effect of incident electromagnetic field A, due to resistance sizes not
With, resonance circuit is by producing different motivation models, including magnetic resonance pattern and electric resonance pattern.When magnetic resonance pattern
When overlapping with the resonant frequency of electric resonance pattern, two kinds of mode of resonance generation destructive interferences, the absorption of electromagnetic wave will be pressed down
, there is great transmission peaks in system.Owing to the Q-value of electric resonance is relatively low, being lost less, the sub-Q-value of magnetic resonance is higher,
Loss is relatively big, and the strongest magnetic resonance pattern is most important to the formation of class electromagnetic induced transparency.Therefore, Wo Men
Flush switch diode in magnetic resonance unit, utilizes the intensity of the change regulation magnetic resonance pattern of switching diode conduction,
Form electricity regulation and control magnetic resonance unit B.The transmission curve of modulator approach is as shown in Figure 2: when feed voltage is bigger,
" turning on " state at diode, magnetic resonance intensity is the lowest, waits and mainly shows as electric resonance pattern from primitive resonance, will
Greatly consuming the energy of electromagnetic wave, the absorbance of electromagnetic wave is the lowest.When feed voltage is less, diode is by " leading
Logical " state is changed into "off" state, and stronger magnetic resonance pattern strengthens with electric resonance Mode Coupling, works as magnetic resonance
When pattern and electric resonance pattern destructive interference, there is class electromagnetic induced transparency phenomenon (EIT pattern), now incidence wave
Absorption is totally constrained, and very big absorbance occurs.And as shown in figure 2 by the arrow, at three resonant frequencies,
Due to the transformation of diode state, transmission spectral line is mutual phase in version between electric resonance pattern and EIT pattern, and electromagnetic wave is saturating
Penetrating intensity and greatly change will occur, therefore we can regulate class electromagnetic induced transparency spectral line and realize three frequency microwave modulation.
Based on three frequency microwave modulator approaches, we provide a kind of regulation class electromagnetic induced transparency spectral line and realize three frequency microwaves tune
That makes realizes structure: including a metallic copper bar and the ribbon structure of a pair metallic copper bar composition, the polarization of incidence wave is hung down
Straight metal band direction.For the sake of simplicity it is contemplated that media environment is the situation of vacuum, under incoming electromagnetic field action,
The excitation of single pole/double-rod produces electro magnetic mode of resonance, and at resonant frequency, intensity in transmission is minimum, absorbance close to 0, result
The electro magnetic resonance indicating single pole/double-rod excitation generation all can consume the energy of electromagnetic wave, it is impossible to realizes bigger transmission.
When single pole and double-rod form combinative structure, electric resonance pattern and magnetic resonance pattern generation destructive interference, transmission plot is composed
Having showed great transmission peaks, absorbance is close to 1.
Embodiment 1
Refer to accompanying drawing 3, accompanying drawing 4, accompanying drawing 5, accompanying drawing 6.
Three frequency microwave modulator approaches based on electricity regulation and control class electromagnetic induced transparency, are to be opened by parallel with variable voltage source E
Close diode D to be connected in series in magnetic resonance circuit, utilize switch two poles between " conducting " and "off" two states
Mutual phase in version, regulation magnetic resonance pattern power.When diode is in " conducting " state, magnetic resonance is more weak；
When diode is in "off" state, magnetic resonance becomes strong, and stronger magnetic resonance intercouples with electric resonance pattern and lures
Leading class electromagnetic induced transparency phenomenon, the absorption of electromagnetic beam will be suppressed, and Electromgnetically-transparent is greatly enhanced.
Devise a kind of regulation class electromagnetic induced transparency spectral line based on the method and realize tunable microwave device, have a metal
Copper bar 1 and a pair metallic copper bar 2 form ribbon structure, the polarization vertical metal strip direction of incidence wave.At a pair gold medal
Belong to flush switch diode in the middle of copper bar, utilize the state of feed regulation switching diode, and then affect metal double-rod magnetic
The power of resonance, induction class electromagnetic induced transparency phenomenon realizes very big absorbance.Due to the transformation of diode state, thoroughly
Penetrating spectral line mutual phase in version between electric resonance pattern and EIT pattern, Electromgnetically-transparent intensity will occur greatly change,
Three frequency microwave modulation can be realized at operating frequency.
Concrete case, concrete structure is shown in accompanying drawing 3.Case structure is by a metallic copper bar 1 and a pair metallic copper bar 2 structure
Becoming, 1 as electric resonance, and 2 as magnetic resonance.At 2 middle flush switch diodes, utilize feed regulation switch
The state of diode, and then affect the power of magnetic pumping pattern, induction class electromagnetic induced transparency phenomenon realizes very big transmission
Rate.Under incoming electromagnetic field action, single pole/double-rod excitation produces electro magnetic mode of resonance, intensity in transmission pole at resonant frequency
Little, absorbance is close to 0, it is impossible to realize bigger transmission.When combinative structure is formed for single pole and double-rod, work as feedback
When piezoelectric voltage is bigger, diode is in " conducting " state, and magnetic resonance intensity is the lowest, waits and mainly shows from primitive resonance
For electric resonance pattern, will greatly consume the energy of electromagnetic wave, the absorbance of electromagnetic wave is the lowest；When feed voltage is less
Time, diode is changed into "off" state by " conducting " state, and magnetic resonance becomes strong, stronger magnetic resonance pattern with
Electric resonance Mode Coupling strengthens, and when magnetic resonance pattern and electric resonance pattern destructive interference, class electromagnetic induced transparency occurs
Phenomenon (EIT pattern), the now absorption of incidence wave is totally constrained, and very big absorbance occurs.
In the present embodiment, metal band width is 1 millimeter (mm), and material is lossy metallic copper, each several in figure
What parameter value is w=22.14mm, l=47.54mm, w1=16mm, l1=5mm, w2=10mm, l1=17mm,
wl=1mm, g=1mm, total is placed on the Rogers-6006 substrate that 1 millimeter (mm) is thick.Exist simultaneously
Wire is added at the two ends of a pair metallic rod, connects external power source and carries out feed regulation, and whole metal structure can be by swashing
Light cutting technique prepares (material object is shown in accompanying drawing 4).The intensity in transmission of case of the present invention is as shown in Figure 5: at feed
Voltage is 1.2 volts (V), and the close-35dB of intensity in transmission, incidence wave is completely absorbed；When voltage is from 1.2 volts (V)
When being gradually reduced, intensity in transmission is gradually increased, and when feed voltage is 0.1 volt (V), absorbance is close to 1.
Accompanying drawing 6 have chosen the change of intensity in transmission at three operating frequencies 4.81GHz, 5.25GHz, 5.62GHz, permissible
Find that the present invention can realize the microwave transmission modulation of three frequencies simultaneously, and modulation amplitude is maximum up to 31dB.This
The metal band simple in construction that invention case relates to, work in-process can change band length and adjust its electromagnetic response
Control, and then realize high efficiency microwave transmission modulation at different frequency range and frequency.
Claims (3)
1. three frequency microwave modulator approaches based on electricity regulation and control class electromagnetic induced transparency, it is characterised in that step is as follows: will
The parallel circuit in series of switching diode and battery is in magnon circuit, when switching diode is in the conduction state
Time so that the magnetic resonance of magnon dies down, when switching diode is closed so that the magnetic of magnon
Resonance becomes strong, and the magnetic resonance becoming strong intercouples with electric resonance pattern and induces class electromagnetic induced transparency phenomenon, electromagnetism
The absorption of wave beam will be suppressed, and Electromgnetically-transparent is greatly enhanced；Described battery uses variable voltage source.
2. the realization regulation class electromagnetic induced transparency spectral line using modulator approach described in claim 1 realizes microwave modulation
Device, it is characterised in that include the first metallic copper bar (1) and a pair metallic copper bar (2) composition ribbon structure,
The polarization vertical metal strip direction of incidence wave；One variable voltage source E and switching diode D；Switching diode
D is embedded between a pair metallic copper bar (2), utilizes the state of feed regulation switching diode, affects metal double
The power of bar magnetic resonance, induction class electromagnetic induced transparency phenomenon realizes very big absorbance；A pair metallic copper bar (2)
Other end serial adjustable potential source E.
The most according to claim 2, regulation class electromagnetic induced transparency spectral line realizes microwave modulating device, it is characterised in that:
Described metallic copper bar uses lossy metallic copper.
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| CN108519713A (en) * | 2018-04-28 | 2018-09-11 | 西安柯莱特信息科技有限公司 | It is a kind of can dynamic regulation wideband transmissison characteristic optical device and its adjusting method |
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| CN104253293A (en) * | 2013-06-26 | 2014-12-31 | 同济大学 | Microwave diode based on nonlinear electromagnetically induced transparency phenomenon |
| CN104124531A (en) * | 2014-06-13 | 2014-10-29 | 华中科技大学 | Adjustable and controllable spatial electromagnetic induction transparent metamaterial device |
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Non-Patent Citations (3)
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| CN108519713A (en) * | 2018-04-28 | 2018-09-11 | 西安柯莱特信息科技有限公司 | It is a kind of can dynamic regulation wideband transmissison characteristic optical device and its adjusting method |
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