CN108258374A - The adjustable regular reflection formula attenuator in port based on electromagnetic induced transparency phenomenon - Google Patents
The adjustable regular reflection formula attenuator in port based on electromagnetic induced transparency phenomenon Download PDFInfo
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- CN108258374A CN108258374A CN201810040988.2A CN201810040988A CN108258374A CN 108258374 A CN108258374 A CN 108258374A CN 201810040988 A CN201810040988 A CN 201810040988A CN 108258374 A CN108258374 A CN 108258374A
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- copper foil
- foil tape
- induced transparency
- electromagnetic induced
- regular reflection
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/22—Attenuating devices
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Abstract
A kind of adjustable reflective attenuator in port based on electromagnetic induced transparency phenomenon is claimed in the present invention, including dielectric-slab, plane copper foil layer, thick line copper foil tape, filament copper foil tape and annular copper foil tape, integrated inductor and patch varactor.Plane copper foil layer is attached to dielectric-slab bottom, and as ground terminal, copper foil tape is overlying on dielectric-slab another side, and thick line copper foil tape is as input/output interface.Filament copper foil layer and annular copper foil tape are configured to generate simultaneously the resonator and resonant ring of electromagnetic induced transparency phenomenon, and chip inductor and varactor are located at the both ends of resonator with thick line copper foil tape, form composite right/left-handed transmission line；The composite right/left-handed transmission line is made of 5 identical units, is changed its optic response by changing the bias value of application on the transmission line, is realized port adjustability.The structure has many advantages, such as to minimize, can integrate, is inexpensive, simple for process.
Description
Technical field
The invention belongs to a kind of reflection type microwave attenuator, more particularly, to a kind of attenuation adjustable reflective attenuation in port
Device.
Background technology
One of the primary modulation device of attenuator as signal strength is more in wireless communication, radar detection, device detection etc.
A field is used widely, it can carry out regulatable attenuation to the transmission signal strength in certain bandwidth, make signal strong
Degree is maintained in certain threshold range, so as to requirement of the different port to signal level in adaptive system.High performance attenuation
Device need to have be easily integrated, characteristics, the existing attenuator structure such as small size can not usually be taken into account.In a microwave system
In, once structure determination, function generally also secures therewith, and in order to save the utilization rate of resource, raising modulating system,
It needs to realize the attenuator that tunable attenuation, especially voltage are adjusted, when carrying out amplitude-modulating modulation to signal, it is also desirable to a kind of
The adjustable attenuator of reflector port.
Electromagnetic induced transparency (Electromagnetically Induced Transparency, EIT) phenomenon is in light
With being generated by atomic coberent and quantum Interference in processes of interaction, the mutual of additional electromagnetic field and substance is utilized
Effect can control the optic response of material, reduce medium and the absorption of incident light is not reabsorbed even.By being driven by probe field
Dynamic excitation path and by the quantum interference between the laser path of coupled field driving, will open one thoroughly on absorption curve
Bright window, and the anomalous dispersion in the transparent window can generate the phenomenon that slow wave is this unique, and this causes EIT at signal
There are various potential application values in reason, quantum memory and optical switch.
The study found that class can be generated using the system that microstrip line and two are formed with the opening resonator of microstrip lines
Than the electromagnetic induced transparency phenomenon (EIT) in classical system.Due to violent disturbance of bright, the dark resonator to intracavitary field, thus
Nonreciprocal electromagnetic induced transparency phenomenon is produced in Meta Materials system.By the way that bright, dark two resonators are respectively placed in
The antinode of electromagnetic wave is with that can realize that the one direction of electromagnetic wave is connected at node.Current this apparatus structure can realize electromagnetic wave
One direction asymmetric transmission, but decay port it is non-adjustable.
Invention content
Present invention seek to address that above problem of the prior art.Propose it is a kind of miniaturization, it is simple for process based on electromagnetism
The adjustable regular reflection formula attenuator in port of inducing transparent phenomenon.Technical scheme is as follows：
A kind of adjustable regular reflection formula attenuator in port based on electromagnetic induced transparency phenomenon including dielectric-slab, is put down
Face copper foil layer, thick line copper foil tape, filament copper foil tape, annular copper foil tape, lumped inductance and varactor, wherein plane copper foil layer
The one side of dielectric-slab is attached to as ground terminal, thick line copper foil tape is overlying on the another side of the dielectric-slab, the thick line copper foil tape
As input/output interface, the filament copper foil tape is used to generate the resonator of electromagnetic induced transparency phenomenon, the annular copper foil
Band is used to generate the resonant ring of electromagnetic induced transparency phenomenon, the integrated inductor and varactor and thick line copper foil tape positioned at humorous
Shake the both ends of chamber, forms composite right/left-handed transmission line；The composite right/left-handed transmission line is made of 5 identical units,
Change its optic response by changing the bias value of application on the transmission line, realize port adjustability.
Further, the resonant ring that the annular copper foil tape is formed is made of the ring structure of two separation, the ring structure
One side middle is equipped with slit.
Further, the annular copper foil tape is also laid on the upper surface of dielectric-slab, and is in coupling with filament copper foil microstrip line
Close structure setting.
Further, the composite right/left-handed transmission line is made of 5 identical structural unit cascades, each structural unit
In include that there are one integrated inductor, two varactors and thick line copper foil microstrip line, the integrated inductors to be connected by through-hole
Plane copper foil layer and thick line copper foil tape.
Further, the dielectric-slab enhances for polytetrafluoroethylglass glass fiber, thickness 1.57mm, relative dielectric constant
It is 2.2.
Further, the filament copper foil strip length is 50.85mm, line width 0.2mm.
Further, the center of the annular copper foil resonant ring and the distance of the top edge of filament copper foil tape are 3.91mm.
Further, the center of two pieces of annulars filament copper foil resonant ring and the distance of composite right/left-handed transmission line are distinguished
For 15.74mm and 35.11mm.
Further, a length of 6.5mm of outer annular edge of the annular copper foil resonant ring ring structure, the copper foil bandwidth of ring structure
For 0.25mm, 0.16mm is divided between inner and outer ring；The slit width of inner and outer ring is respectively 0.4mm and 0.6mm.
Further, the length of the thick line copper foil tape is respectively 3.6mm, 1.8mm, line width 3.2mm；3.7GHz's
Under resonant frequency, the distributed inductance of the thick line copper foil tape is 2.9056e-7H/m, distribution capacity 6.9928e-11F/m, is become
Hold the BB135 that diode is NXP productions, connected in a manner that anode is to anode.
It advantages of the present invention and has the beneficial effect that：
1st, present invention process is simple, and low manufacture cost is easily integrated；
2nd, the artificial three level atomic system formed using copper foil fine-wire, the three level atomic system of analogy, 50.85mm copper
Foil analogy ground state, two resonant ring analogies, two excitation state；Electromagnetic induced transparency phenomenon in classical system is due to testing item
Part limits, and is not easy to realize, this analogy can realize the class electromagnetic induced transparency phenomenon that can be integrated under room temperature.This phenomenon can
Raising emits and the contrast of attenuation, and the electromagnetic induced transparency phenomenon in analogy classical system can significantly improve reflection and decline
The contrast subtracted；
3rd, using varactor, can realize and regulate and control attenuation port using DC voltage, it is convenient to signal amplitude into
Row voltage modulated.
Description of the drawings
Fig. 1 is the front view that the present invention provides preferred embodiment；
Fig. 2 is the sectional view of composite right/left-handed transmission line in the present invention；
The detail view of composite right/left-handed transmission line unit in the present invention of Fig. 3 positions；
Fig. 4 is the simple equivalent circuit figure of composite right/left-handed transmission line unit in the present invention；；
Fig. 5 is the detail view of filament copper foil resonant ring in the present invention；
Fig. 6 applies 26.5V, 0V in left and right composite transmission line for the present invention and biases (left figure) and 0V, 26.5V bias respectively
Return loss plot under (right figure).
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, detailed
Carefully describe.Described embodiment is only the part of the embodiment of the present invention.
The present invention solve above-mentioned technical problem technical solution be：
Embodiment 1：The adjustable regular reflection formula attenuator in port based on electromagnetic induced transparency phenomenon is as shown in Figure 1, packet
Include dielectric-slab 3, plane copper foil layer 20, filament copper foil microstrip line 6, annular copper foil resonant ring 7 and 8, composite right/left-handed transmission line, 4 and
9, copper foil bias feed port 5 and 11.Wherein, dielectric-slab 3 be dielectric-slab made of polytetrafluoroethylglass glass fiber, plane copper foil
Layer 20 is completely laid on the lower surface of dielectric-slab 3；Filament copper foil microstrip line 6, annular copper foil resonant ring 7 and 8, composite left-and-right-hand pass
Defeated line 4 and 9, copper foil bias feed port 5 and 11, are laid on the upper surface of dielectric-slab 3, and are in coupling with filament copper foil microstrip line 6
Close structure setting, the top edge 3.91mm of the centre distance filament copper foil microstrip line 6 of resonant ring 7 and 8；Composite right/left-handed transmission line
4 and 9 are distributed in the left and right ends of filament copper foil microstrip line 6.As shown in Fig. 2, composite right/left-handed transmission line is made of 5 units,
Each unit is as shown in figure 3, the through-hole of a diameter of 1.2mm is opened at the center of wherein thick line copper foil tape 15, to pass through lumped inductance
17 connection thick line copper foil tape 15 and plane copper foil layer 20, the connection of plane copper foil layer 20 ground, as shown in figure 4, inductance 17 is connected to slightly
Line copper foil tape and ground.
In the present embodiment, annular thin copper foil resonant ring 7 and 8 is made of the filament copper foil tape 13 and 14 shown in Fig. 5, outer shroud
The 14 structure length of sides are 6.5mm, line width 0.25mm, are divided into 0.16mm between inside and outside ring structure, inner and outer ring slit width is respectively 0.4mm
And 0.6mm.The relative dielectric constant of dielectric-slab 3 is 2.2, plate thickness 1.57mm, dielectric loss angle 0.0009.Filament copper foil micro-strip
The length of line 6 is 50.85mm, line width 0.2mm.The element length of composite right/left-handed transmission line 4 and 9 is 7mm, and overall length is
38.6mm, including 5 units and a thick line copper foil microstrip line 15.The blocking electricity that input/output port 1,12 passes through 100nF
Hold 2 and 10 connection composite right/left-handed transmission lines 4,9.
When the voltage being applied on composite right/left-handed transmission line 9 be 26.5V when, composite right/left-handed transmission line 9 its be equal to
The microstrip line of 11.45mm long, and the impedance for being applied with the composite right/left-handed transmission line 4 of 0V can be serious not with filament copper foil line 6
Match, cause EIT-like effects that can be happened at left port 1, and the signal that right output port 12 reflects can decay, such as the left figure of Fig. 6
It is shown.When the voltage on composite right/left-handed transmission line 9 is 0V, the composite right/left-handed transmission line 4 for being applied with 26.5V is equal to
The microstrip line of 11.45mm long, the signal reflected at this time from left port 1 can decay, as shown in the right figure of Fig. 6.In this implementation
In example, the resonant frequency of annular filament copper foil resonant ring is in 3.7GHz, so the reflection of electromagnetic wave of 3.7GHz is particularly strong, so as to
Realize the one direction reflection of electromagnetic wave.
This structure based on microstrip line system can be integrated in optical device well, can easily control electricity
The transmission direction of magnetic wave, and then optical signal is modulated.
The above embodiment is interpreted as being merely to illustrate the present invention rather than limit the scope of the invention.
After the content for having read the record of the present invention, technical staff can make various changes or modifications the present invention, these equivalent changes
Change and modification equally falls into the scope of the claims in the present invention.
Claims (10)
1. the adjustable regular reflection formula attenuator in a kind of port based on electromagnetic induced transparency phenomenon, which is characterized in that including being situated between
Scutum (3), plane copper foil layer (20), thick line copper foil tape (1；5；11；12；15；16), filament copper foil tape (6), annular copper foil tape
(7；8), integrated inductor (17；18) and varactor (19), wherein plane copper foil layer (20) are attached to the one side of dielectric-slab (3)
As ground terminal, thick line copper foil tape (1；5；11；12；15；16) another side of the dielectric-slab (3), the thick line copper foil are overlying on
Band (1；12) as input/output interface, the filament copper foil layer (6) is for generating the resonator of electromagnetic induced transparency phenomenon, institute
State annular copper foil tape (7；8) it is described by integrated inductor (17 for generating the resonant ring of electromagnetic induced transparency phenomenon；And transfiguration 18)
Diode (19) and thick line copper foil tape (15；16；17) composite right/left-handed transmission line is formed, positioned at the both ends of resonator；It is described multiple
It closes left-and-right-hand transmission line to be made of 5 identical units, changes it by changing the bias value of application on the transmission line
Optic response realizes port adjustability.
2. the adjustable regular reflection formula attenuator in the port according to claim 1 based on electromagnetic induced transparency phenomenon,
It is characterized in that, the annular copper foil tape (7；8) ring structure (13 that the resonant ring formed is detached by two；14) it forms, the ring knot
Structure (13；14) one side middle is equipped with slit.
3. the adjustable regular reflection formula attenuator in the port according to claim 1 based on electromagnetic induced transparency phenomenon,
It is characterized in that, the annular copper foil tape (7；8) upper surface of dielectric-slab (3) is also laid on, and is in filament copper foil microstrip line (6)
Coupled structure is set.
4. the adjustable regular reflection formula attenuator in the port according to claim 1 based on electromagnetic induced transparency phenomenon,
It is characterized in that, the composite right/left-handed transmission line (4；9) it is made of 5 identical structural unit cascades, in each structural unit
Comprising there are three integrated inductors (17；18), two varactors (19) and thick line copper foil microstrip line (5；11；15；16；17),
The integrated inductor (17) connects plane copper foil layer (20) and thick line copper foil tape (16) by through-hole.
5. the adjustable regular reflection formula attenuator in the port according to claim 1 based on electromagnetic induced transparency phenomenon,
Be characterized in that, the dielectric-slab (3) be polytetrafluoroethylglass glass fiber reinforcing material, thickness 1.57mm, relative dielectric constant
It is 2.2.
6. the adjustable regular reflection formula attenuator in the port according to claim 1 based on electromagnetic induced transparency phenomenon,
It is characterized in that, filament copper foil tape (6) length is 50.85mm, line width 0.2mm.
7. the adjustable regular reflection formula attenuator in the port according to claim 6 based on electromagnetic induced transparency phenomenon,
It is characterized in that, the center of the annular copper foil resonant ring and the distance of the top edge of filament copper foil tape (6) are 3.91mm.
8. the adjustable regular reflection formula attenuator in the port according to claim 6 based on electromagnetic induced transparency phenomenon,
It is characterized in that, the center of two pieces of annulars filament copper foil resonant ring and the distance of composite right/left-handed transmission line are respectively
15.74mm and 35.11mm.
9. the adjustable regular reflection formula attenuator in the port according to claim 2 based on electromagnetic induced transparency phenomenon,
It is characterized in that, the annular copper foil resonant ring ring structure (7；8) outer shroud (13) length of side be 6.5mm, ring structure (13；14) copper
Foil width is 0.25mm, and 0.16mm is divided between inner and outer ring；The slit width of inner and outer ring is respectively 0.4mm and 0.6mm.
10. the adjustable regular reflection formula attenuator in the port according to claim 2 based on electromagnetic induced transparency phenomenon,
It is characterized in that, the thick line copper foil tape (15；16) length is respectively 3.6mm, 1.8mm, line width 3.2mm；3.7GHz's
Under resonant frequency, the distributed inductance of the thick line copper foil tape is 2.9056e-7H/m, distribution capacity 6.9928e-11F/m, is become
Hold the BB135 that diode is NXP productions, connected in a manner that anode is to anode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810040988.2A CN108258374B (en) | 2018-01-16 | 2018-01-16 | Port-adjustable one-way reflection type attenuator based on electromagnetic induction transparency phenomenon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810040988.2A CN108258374B (en) | 2018-01-16 | 2018-01-16 | Port-adjustable one-way reflection type attenuator based on electromagnetic induction transparency phenomenon |
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| CN108258374A true CN108258374A (en) | 2018-07-06 |
| CN108258374B CN108258374B (en) | 2020-10-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114465010A (en) * | 2022-01-05 | 2022-05-10 | 重庆邮电大学 | Electric control super-surface terahertz modulator based on electromagnetic induction transparency phenomenon |
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|---|---|---|---|---|
| CN104103876A (en) * | 2014-07-15 | 2014-10-15 | 哈尔滨工业大学 | Composite left and right hand transmission line based electricity adjustable phase shifter |
| CN104979603A (en) * | 2014-04-02 | 2015-10-14 | 同济大学 | Microwave bistable switch based on nonlinear electromagnetic induction transparency |
| CN105789798A (en) * | 2016-03-31 | 2016-07-20 | 西安空间无线电技术研究所 | Attenuator |
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2018
- 2018-01-16 CN CN201810040988.2A patent/CN108258374B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979603A (en) * | 2014-04-02 | 2015-10-14 | 同济大学 | Microwave bistable switch based on nonlinear electromagnetic induction transparency |
| CN104103876A (en) * | 2014-07-15 | 2014-10-15 | 哈尔滨工业大学 | Composite left and right hand transmission line based electricity adjustable phase shifter |
| CN105789798A (en) * | 2016-03-31 | 2016-07-20 | 西安空间无线电技术研究所 | Attenuator |
Non-Patent Citations (1)
| Title |
|---|
| LEI ZHU等: "A low-loss electromagnetically induced transparency(EIT) metamaterial based on coupling between electric and toroidal dipoles", 《RESEARCHGATE》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114465010A (en) * | 2022-01-05 | 2022-05-10 | 重庆邮电大学 | Electric control super-surface terahertz modulator based on electromagnetic induction transparency phenomenon |
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