CN108110390A - Planar transmission line dynamic adjustable attenuator based on graphene - Google Patents
Planar transmission line dynamic adjustable attenuator based on graphene Download PDFInfo
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- CN108110390A CN108110390A CN201810058360.5A CN201810058360A CN108110390A CN 108110390 A CN108110390 A CN 108110390A CN 201810058360 A CN201810058360 A CN 201810058360A CN 108110390 A CN108110390 A CN 108110390A
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- graphene
- transmission line
- planar transmission
- attenuator
- sandwich structure
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- 229910021389 graphene Inorganic materials 0.000 title claims abstract description 85
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 230000005540 biological transmission Effects 0.000 title claims abstract description 30
- 239000002356 single layer Substances 0.000 claims abstract description 21
- 239000002608 ionic liquid Substances 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 25
- 239000010410 layer Substances 0.000 claims description 13
- 238000007639 printing Methods 0.000 claims description 5
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 238000004088 simulation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 150000001336 alkenes Chemical class 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- -1 graphite Alkene Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 210000001589 microsome Anatomy 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/22—Attenuating devices
- H01P1/227—Strip line attenuators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/22—Attenuating devices
- H01P1/222—Waveguide attenuators
Landscapes
- Non-Reversible Transmitting Devices (AREA)
Abstract
The invention discloses the planar transmission line dynamic adjustable attenuators based on graphene, belong to attenuator technical field, and including the graphene sandwich structure being arranged on planar transmission line, graphene sandwich structure includes two single-layer graphenes and diaphragm paper；Diaphragm paper is impregnated with ionic liquid, and bias voltage is respectively connected in each single-layer graphene.The planar transmission line dynamic adjustable attenuator based on graphene of the present invention, with can the attenuation of dynamic regulation, relatively low return loss, wider frequency band, can be by adjusting the electrical conductivity of graphene and the length of graphene come the attenuation of regulated attenuator and the dynamic regulation scope of attenuation；Meanwhile the attenuator manufacture craft of the application is simple, easy to spread and application.
Description
Technical field
The invention belongs to attenuator technical fields, and in particular to the planar transmission line dynamic adjustable damping based on graphene
Device.
Background technology
Attenuator is one kind control signal transmission energy on the premise of not causing distorted signals that can simultaneously enhance impedance matching
The critical elements of amount.
Graphene is received significant attention due to possessing prominent machinery, electronics and optical property in recent years, and micro-
Some elements of wave band based on graphene are also suggested recent years.Since the electrical conductivity dynamic in microwave section graphene is adjustable,
Therefore some documents propose the adjustable attenuator of dynamic based on graphene recently.
The adjustable attenuator of the dynamic based on graphene reported out at present is all based on microstrip line construction, but this
Attenuator all has larger return loss, therefore the performance for the circuit element being connected with this attenuator can be declined.
In order to reduce the return loss of attenuator and make it easy to integrate with planar circuit, graphene sandwich structure is utilized
It is a kind of preferable selection to be placed on the attenuator that the conductor of planar transmission line nearby or between conductor is formed.
The content of the invention
Goal of the invention：Existing in the prior art in order to solve the problems, such as, the present invention provides the planar transmission line based on graphene
Dynamic adjustable attenuator, having can the attenuation of dynamic regulation, relatively low return loss, wider frequency band.
Technical solution：In order to realize foregoing invention purpose, the present invention adopts the following technical scheme that：
Planar transmission line dynamic adjustable attenuator based on graphene, including the graphene three being arranged on planar transmission line
Mingzhi's structure, graphene sandwich structure include two single-layer graphenes and diaphragm paper；The diaphragm paper is impregnated with ionic liquid,
Each single-layer graphene respectively connects bias voltage.
The planar transmission line is arranged on dielectric-slab.
The planar transmission line is microstrip line, co-planar waveguide or the line of rabbet joint.
When the planar transmission line is microstrip line, in one layer of strip metal of dielectric-slab front printing, reverse side
The metal layer of one layer of overwrite media plate is printed, forms microstrip line；The graphene sandwich structure is placed in parallel in dielectric-slab
Surface is simultaneously in contact with positive one layer of strip metal.
When the planar transmission line is co-planar waveguide, frontoparallel is printed three intervals and is set on the dielectric-slab
The strip metal put forms co-planar waveguide；Graphene sandwich structure is placed on the co-planar waveguide processed, by three intervals
The strip metal of setting is connected.
When the planar transmission line is the line of rabbet joint, frontoparallel printing two is spaced on the dielectric-slab
Strip metal forms the line of rabbet joint；Graphene sandwich structure is placed on the line of rabbet joint processed, by two spaced banding gold
Symbolic animal of the birth year connects.
Inventive principle：The application propose three kinds graphene sandwich structure is placed near the conductor of planar transmission line or
The attenuator formed between conductor.These three attenuators are by graphene sandwich structure and microstrip line, co-planar waveguide and line of rabbet joint structure
Into.Since graphene can cause power attenuation on microstrip line, co-planar waveguide and the line of rabbet joint, can be changed by applied voltage
The electrical conductivity of graphene controls the attenuation of attenuator.
Advantageous effect：Compared with prior art, the planar transmission line dynamic adjustable attenuator of the invention based on graphene,
With can the attenuation of dynamic regulation, relatively low return loss, wider frequency band, can by adjust graphene electrical conductivity and
The length of graphene comes the attenuation of regulated attenuator and the dynamic regulation scope of attenuation；Meanwhile the attenuator system of the application
Make simple for process, easy to spread and application.
Description of the drawings
Fig. 1 is the structure diagram for making attenuator cross section on the microstrip line；
Fig. 2 is the front view for making attenuator on the microstrip line；
Fig. 3 is the structure diagram for the attenuator cross section being produced on co-planar waveguide；
Fig. 4 is the front view for the attenuator being produced on co-planar waveguide；
Fig. 5 is the structure diagram for the attenuator cross section being produced on the line of rabbet joint；
Fig. 6 is the front view for the attenuator being produced on the line of rabbet joint；
Fig. 7 is the curve that graphene surface impedance changes with bias voltage；
Fig. 8 is to make the insertion loss of attenuator on the microstrip line with the variation of frequency；
Fig. 9 is the variation for making attenuator return loss on the microstrip line with frequency；
Figure 10 is the insertion loss for the attenuator being produced on co-planar waveguide with the variation of frequency；
Figure 11 is the return loss for the attenuator being produced on co-planar waveguide with the variation of frequency；
Figure 12 is the insertion loss for the attenuator being produced on the line of rabbet joint with the variation of frequency；
Figure 13 is the return loss for the attenuator being produced on the line of rabbet joint with the variation of frequency.
Specific embodiment
The present invention is further described with specific implementation example below in conjunction with the accompanying drawings.
As shown in figures 1 to 6, reference numeral is：Graphene sandwich structure 1, microstrip line 2, single-layer graphene 3, diaphragm paper 4,
Co-planar waveguide 5, the line of rabbet joint 6, dielectric-slab 7 and strip metal 8.Single-layer graphene 3 is attached on PVC, and single-layer graphene 3 is by attached
The PVC is arranged at intervals with planar transmission line.
As shown in Figs. 1-2, attenuator on the microstrip line is made, including graphene sandwich structure 1 and microstrip line 2, graphite
Alkene sandwich structure 1 is placed on parallel to 7 surface of dielectric-slab on microstrip line 2.Make the manufacture craft of attenuator on the microstrip line
It is that microstrip line 2 is first processed on dielectric-slab 7 with printed circuit board process (PCB technology), step is on one block of dielectric-slab 7
One layer of strip metal 8 of front printing, as shown in Fig. 2, reverse side prints the metal layer of one layer of overwrite media plate 7；Then by graphene
Sandwich structure 1 is placed in parallel in medium plate surface and is in contact with positive one layer of strip metal.Bias voltage is applied to often
On a single-layer graphene 3, to adjust the electrical conductivity of graphene sandwich structure 1.
As shown in Figure 3-4, the attenuator being produced on co-planar waveguide includes graphene sandwich structure 1 and co-planar waveguide 5,
Graphene sandwich structure 1 is placed on co-planar waveguide 5 parallel to 7 surface crosses of dielectric-slab, two ground planes (strip metal 8)
On.The manufacture craft for the attenuator being produced on co-planar waveguide is first to be processed with printed circuit board process (PCB technology) coplanar
Waveguide 5, step are that frontoparallel prints out three ribbon metals 8, intermediate strip metal 8 and its both sides on one block of dielectric-slab 7
Strip metal 8 be arranged at intervals.Then graphene sandwich structure 1 is placed on the co-planar waveguide 5 processed, between three
It is connected every the strip metal 8 of setting.Bias voltage is applied on each single-layer graphene 3, to adjust graphene sandwich structure 1
Electrical conductivity.
As seen in figs. 5-6, the attenuator being produced on the line of rabbet joint includes graphene sandwich structure 1 and the line of rabbet joint 6, graphene three
Mingzhi's structure 1 is placed on 6 top of the line of rabbet joint parallel to 7 surface crosses of dielectric-slab, two conductor (strip metal 8) planes.It is produced on slot
The manufacture craft of attenuator on line is first to process the line of rabbet joint 6 with printed circuit board process (PCB technology), and step is at one piece
Frontoparallel prints out two ribbon metals 8 on dielectric-slab 7, and two ribbon metals 8 are arranged at intervals；Then by graphene sandwich
Structure 1 is placed on the line of rabbet joint 6 processed, and two spaced strip metals 8 are connected.Bias voltage is applied to each list
On layer graphene 3, to adjust the electrical conductivity of graphene sandwich structure 1.
Graphene sandwich structure 1 is made of two single-layer graphenes 3 and diaphragm paper 4.To adjust graphene electrical conductivity, every
Film paper 4 is impregnated with ionic liquid, and each single-layer graphene 3 connects bias voltage.
Graphene sandwich structure 1 is disposed close to realize impedance loss on the medium of 2 conduction band of microstrip line, therefore
The output port signal of attenuator can be decayed.Depending on the needs of the length apparent attenuation amount of single-layer graphene 3.Adjust biased electrical
Pressure can dynamically continuously adjust the electrical conductivity of single-layer graphene 3, therefore the attenuation of attenuator can be by dynamic regulation.
Graphene sandwich structure 1, which is placed on across two ground planes on co-planar waveguide 5, can realize impedance loss, because
This can be decayed in the output port signal of attenuator.Depending on the needs of the length apparent attenuation amount of single-layer graphene 3.It adjusts inclined
The electrical conductivity of single-layer graphene 3 can dynamically be continuously adjusted by putting voltage, therefore the attenuation of attenuator can be by dynamic regulation.
Graphene sandwich structure 1, which is placed on across two conductor planes on the line of rabbet joint 6, can realize impedance loss, therefore
The output port signal of attenuator can be decayed.Depending on the needs of the length apparent attenuation amount of single-layer graphene 3.Adjust biased electrical
Pressure can dynamically continuously adjust the electrical conductivity of single-layer graphene 3, therefore the attenuation of attenuator can be by dynamic regulation.
Fig. 7 is the curve that 3 surface impedance of single-layer graphene changes with bias voltage.Curve negotiating experiment measurement obtains.From
Fig. 7 can be seen that the bias voltage being added on graphene sandwich structure 1 is higher, and 3 surface impedance of single-layer graphene is smaller.
Fig. 8-9 shows the attenuator performance ginseng that one specific embodiment of attenuator on the microstrip line is made in the present invention
Number.Curve negotiating electromagnetic simulation software CST is obtained.
Fig. 8 is attenuator | S21| parameter with frequency variation.Fig. 9 is | S11| parameter with frequency variation.It can from Fig. 8
To find out, when graphene surface impedance drops to 520 Ω/ from 3000 Ω/, the attenuation of attenuator is arrived in 10GHz
It can increase to 14.5dB from 3dB in 30GHz frequency ranges.From fig. 9, it can be seen that attenuator | S11| parameter is in 10GHz to 30GHz
- 15dB is consistently less than in frequency range, this represents the return loss very little always of attenuator, and the circuit at attenuator both ends will not be caused
It influences.In Fig. 8-9, the parameter of dielectric-slab 7 is：Medium relative dielectric constant (can use the plate of Rogers 5880 for 2.2
Material), thickness 0.6mm；The parameter of graphene sandwich structure 1 is：Length is 50mm, width 3mm；The parameter of microstrip line 2
For：Length is 50mm, and conduction band width is 1.86mm.
Figure 10-11 is the attenuator performance parameter of one specific embodiment of attenuator being produced on co-planar waveguide.Curve
It is obtained by electromagnetic simulation software CST.
Figure 10 is attenuator | S21| with the variation of frequency.Figure 11 is | S11| with the variation of frequency.In Figure 10-11, medium
The parameter of plate 7 is：Medium relative dielectric constant is 2.2 (plates that can use Rogers 5880), thickness 1.575mm；Stone
The parameter of black alkene sandwich structure 1 is：Length is 180mm, width 3mm, and the parameter of co-planar waveguide 5 is：Length is 200mm,
Conduction band width is 6.3mm, and the distance between ground plane and conduction band is 0.3mm.
The simulation result of Figure 10 shows when graphene surface impedance drops to 520 Ω/ from 3000 Ω/, attenuator
Attenuation can increase to 14.5dB from 3dB in 10GHz to 26GHz frequency ranges.
The simulation result of Figure 11 shows attenuator | S11| parameter is consistently less than -17dB in 10GHz to 26GHz frequency ranges,
This represents the return loss very little always of attenuator, and the circuit at attenuator both ends will not be impacted.
Figure 12-13 is the attenuator performance parameter of one specific embodiment of attenuator being produced on the line of rabbet joint.Curve negotiating
Electromagnetic simulation software CST is obtained.
Figure 12 is attenuator | S21| with the variation of frequency.Figure 13 is | S11| with the variation of frequency.In Figure 12-13, medium
The parameter of plate 7 is：Medium relative dielectric constant (plates that Rogers 5880 can be used), thickness 1.575mm, stone for 2.2
The parameter of black alkene sandwich structure 1 is：Length is 180mm, width 4.8mm, and the parameter of the line of rabbet joint 6 is：Length is 190mm, is led
The width of slot is 0.29mm between body.
The simulation result of Figure 12 shows when graphene surface impedance drops to 520 Ω/ from 3000 Ω/, attenuator
Attenuation can increase to 14.5dB from 3dB in 11GHz to 24GHz frequency ranges.
The simulation result of Figure 13 shows attenuator | S11| parameter is consistently less than -18dB in 11GHz to 24GHz frequency ranges,
This represents the return loss very little always of attenuator, and the circuit at attenuator both ends will not be impacted.
Claims (6)
1. the planar transmission line dynamic adjustable attenuator based on graphene, it is characterised in that：Including being arranged on planar transmission line
Graphene sandwich structure (1), graphene sandwich structure (1) include two single-layer graphenes (3) and diaphragm paper (4)；Institute
The diaphragm paper (4) stated is impregnated with ionic liquid, and bias voltage is respectively connected in each single-layer graphene (3).
2. the planar transmission line dynamic adjustable attenuator according to claim 1 based on graphene, it is characterised in that：It is described
Planar transmission line on be arranged on dielectric-slab (7).
3. the planar transmission line dynamic adjustable attenuator according to claim 2 based on graphene, it is characterised in that：It is described
Planar transmission line be microstrip line (2), co-planar waveguide (5) or the line of rabbet joint (6).
4. the planar transmission line dynamic adjustable attenuator according to claim 3 based on graphene, it is characterised in that：Work as institute
When the planar transmission line stated is microstrip line (2), in one layer of strip metal (8) of dielectric-slab (7) front printing, reverse side printing
The metal layer of one layer of overwrite media plate (7) forms microstrip line (2)；The graphene sandwich structure (1), which is placed in parallel, to be situated between
Scutum (7) surface is simultaneously in contact with positive one layer of strip metal (8).
5. the planar transmission line dynamic adjustable attenuator according to claim 2 based on graphene, it is characterised in that：Work as institute
When the planar transmission line stated is co-planar waveguide (5), frontoparallel prints three spaced bands on the dielectric-slab (7)
Shape metal (8) forms co-planar waveguide (5)；Graphene sandwich structure (1) is placed on the co-planar waveguide (5) processed, by three
The spaced strip metal of item (8) is connected.
6. the planar transmission line dynamic adjustable attenuator according to claim 2 based on graphene, it is characterised in that：Work as institute
When the planar transmission line stated is the line of rabbet joint (6), frontoparallel prints two spaced banding gold on the dielectric-slab (7)
Belong to (8), form the line of rabbet joint (6)；Graphene sandwich structure (1) is placed on the line of rabbet joint (6) processed, spaced by two
Strip metal (8) is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810058360.5A CN108110390B (en) | 2018-01-22 | 2018-01-22 | Graphene-based plane transmission line dynamic adjustable attenuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810058360.5A CN108110390B (en) | 2018-01-22 | 2018-01-22 | Graphene-based plane transmission line dynamic adjustable attenuator |
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| Publication Number | Publication Date |
|---|---|
| CN108110390A true CN108110390A (en) | 2018-06-01 |
| CN108110390B CN108110390B (en) | 2024-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810058360.5A Active CN108110390B (en) | 2018-01-22 | 2018-01-22 | Graphene-based plane transmission line dynamic adjustable attenuator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037870A (en) * | 2018-07-16 | 2018-12-18 | 西安电子科技大学 | Adjustable wide-band co-planar waveguide attenuator based on graphene nanometer sheet |
| CN110729542A (en) * | 2019-09-19 | 2020-01-24 | 东南大学 | Artificial surface plasmon integrated dynamic adjustable transmission device based on graphene |
| CN110867635A (en) * | 2019-12-18 | 2020-03-06 | 东南大学 | Dynamic adjustable graphene attenuator based on equivalent surface plasmons |
| CN114914651A (en) * | 2022-06-01 | 2022-08-16 | 华侨大学 | Graphene microstrip tunable attenuator applied to 5G communication |
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| CN105703045A (en) * | 2014-11-28 | 2016-06-22 | 北京大学 | Microwave attenuator |
| US20170256862A1 (en) * | 2015-01-08 | 2017-09-07 | Vorbeck Materials Corp. | Graphene-based rotman lens |
| CN107196028A (en) * | 2017-07-13 | 2017-09-22 | 东南大学 | A kind of dynamic adjustable attenuator of the substrate integration wave-guide based on graphene |
| CN107394324A (en) * | 2017-06-23 | 2017-11-24 | 深圳市景程信息科技有限公司 | Adjustable microstrip line signal transmission structure based on graphene |
| CN207781855U (en) * | 2018-01-22 | 2018-08-28 | 东南大学 | Planar transmission line dynamic adjustable attenuator based on graphene |
-
2018
- 2018-01-22 CN CN201810058360.5A patent/CN108110390B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105703045A (en) * | 2014-11-28 | 2016-06-22 | 北京大学 | Microwave attenuator |
| US20170256862A1 (en) * | 2015-01-08 | 2017-09-07 | Vorbeck Materials Corp. | Graphene-based rotman lens |
| CN107394324A (en) * | 2017-06-23 | 2017-11-24 | 深圳市景程信息科技有限公司 | Adjustable microstrip line signal transmission structure based on graphene |
| CN107196028A (en) * | 2017-07-13 | 2017-09-22 | 东南大学 | A kind of dynamic adjustable attenuator of the substrate integration wave-guide based on graphene |
| CN207781855U (en) * | 2018-01-22 | 2018-08-28 | 东南大学 | Planar transmission line dynamic adjustable attenuator based on graphene |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109037870A (en) * | 2018-07-16 | 2018-12-18 | 西安电子科技大学 | Adjustable wide-band co-planar waveguide attenuator based on graphene nanometer sheet |
| CN110729542A (en) * | 2019-09-19 | 2020-01-24 | 东南大学 | Artificial surface plasmon integrated dynamic adjustable transmission device based on graphene |
| CN110867635A (en) * | 2019-12-18 | 2020-03-06 | 东南大学 | Dynamic adjustable graphene attenuator based on equivalent surface plasmons |
| CN114914651A (en) * | 2022-06-01 | 2022-08-16 | 华侨大学 | Graphene microstrip tunable attenuator applied to 5G communication |
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