CN112768880B - Bandwidth-tunable 5G antenna based on graphene composition - Google Patents
Bandwidth-tunable 5G antenna based on graphene composition Download PDFInfo
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- CN112768880B CN112768880B CN201911152708.8A CN201911152708A CN112768880B CN 112768880 B CN112768880 B CN 112768880B CN 201911152708 A CN201911152708 A CN 201911152708A CN 112768880 B CN112768880 B CN 112768880B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/364—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor
- H01Q1/368—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith using a particular conducting material, e.g. superconductor using carbon or carbon composite
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/106—Microstrip slot antennas
Abstract
The invention provides a bandwidth-tunable 5G antenna based on a graphene composition, which comprises a graphene layer, wherein the graphene layer comprises the graphene composition. The antenna according to an embodiment of the present invention can perform bandwidth tuning, and is suitable for use in a multifunctional information system.
Description
Technical Field
The invention relates to an antenna, in particular to a band width tunable slot antenna.
Background
The 5G network is a revolutionary network of a next generation communication network, can carry out communication transmission under the 5G network, has the speed which is more than ten times of the current 4G transmission speed, and can reach the theoretical transmission speed of tens of Gb per second at most. Due to the fact that the wavelength of the antenna working under the 5G frequency band is short, the size of the antenna is smaller than that of a traditional antenna, and processing difficulty and precision are increased; the millimeter wave antenna is easy to be blocked or lost due to the shortening of the wavelength in the signal transmission process, and the transmission distance is shortened; the multi-band operation needs a plurality of antennas to realize frequency band tuning and switching, thereby greatly increasing the number and space of the antennas and being extremely unfavorable for the miniaturization of devices.
Disclosure of Invention
It is a primary object of the present invention to provide a slot antenna comprising a graphene layer, the graphene layer comprising a graphene composition.
The antenna according to an embodiment of the present invention can perform bandwidth tuning, and is suitable for use in a multifunctional information system.
Drawings
Fig. 1 is a schematic structural diagram of a slot antenna according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a second surface of a slot antenna according to an embodiment of the present invention;
fig. 3 and 4 are schematic diagrams of a vector network analyzer test of the antenna according to embodiment 1 of the present invention;
fig. 5 is a schematic view of vector network analyzer data processing of the antenna of embodiment 1 of the present invention;
fig. 6 is a schematic view of a vector network analyzer test of an antenna according to embodiment 2 of the present invention;
fig. 7 is a schematic view of a vector network analyzer test of an antenna according to embodiment 3 of the present invention;
fig. 8 is a schematic diagram of a vector network analyzer test of an antenna according to a comparative example of the present invention.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is understood that the invention is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the scope of the present invention, and that the description and drawings are to be taken as illustrative and not restrictive in character.
Referring to fig. 1 to 3, an embodiment of the present invention provides a slot antenna, which includes a dielectric layer 10, a ground plane 20, a conductive patch (or a radiation patch) 30, a graphene layer 40, an SMA head (not shown), and an interface connection line (not shown). Wherein the dielectric layer 10 is sandwiched between the ground plate 20 and the conductive patch 30. The ground plate 20 is provided with a slit 21 and a groove 22, and the graphene layer 40 is formed on the groove 22.
In one embodiment, the dielectric layer 10 includes a first surface and a second surface opposite to the first surface, the ground plate 20 is disposed on the first surface of the dielectric layer 10, and the conductive patch 30 is disposed on the second surface.
In one embodiment, the slot 21 and the groove 22 penetrate the ground plate 20 in a depth direction, so that the regions of the dielectric layer 10 corresponding to the slot and the groove are exposed to the ground plate 20.
In one embodiment, the graphene layer 40 is disposed on the dielectric layer 10 in the recess 22.
In one embodiment, the groove 22 is elongated, and has one end formed at the edge of the ground plate 20 and the other end located inside the ground plate 20.
In one embodiment, the graphene layer 40 is disposed at an end of the groove 22 at the edge of the ground plate 20.
In one embodiment, the slot 21 is in a right-angle U shape, and two ends of the slot are formed on the edge of the ground plate 20, so that a rectangular area surrounded by the slot 21 is formed on the ground plate 20.
In one embodiment, a portion of the groove 22 is located in the rectangular area surrounded by the slit 21, and another portion is located outside the area.
In one embodiment, one end of the groove 22 at the edge of the ground plate 20 is located in the rectangular area defined by the slot 21.
In one embodiment, the dielectric layer 10 and the ground plate 20 are rectangular.
In one embodiment, the material of the dielectric layer 10 is teflon, which can improve the overall heat resistance and processability; and the polytetrafluoroethylene has low price, so that the manufacturing cost of the slot antenna can be greatly reduced.
In one embodiment, the ground plate 20 is made of copper clad.
In one embodiment, the conductive patch 30 is a strip made of copper, and an anti-oxidation layer treatment process may be applied to the surface of the conductive patch 30 to prevent the conductive patch 30 from being oxidized and corroded.
In one embodiment, the conductive patch 30 is manufactured by a cutting and gold-depositing process, so that the loss is lower, the antenna is resistant to oxidation and corrosion by the anti-oxidation layer treatment process of the conductive patch 30, and the performance of the antenna can be fully exerted.
In one embodiment, the SMA head and the interface connection line may use the industry standard 50 ohms.
The shape, thickness, etc. of the graphene layer 40 are not particularly limited in the present invention, and can be adjusted accordingly as needed.
In one embodiment, the graphene layer 40 may be rectangular, and may have dimensions of, for example, 3mm long and 2mm wide.
In one embodiment, the graphene layer 40 includes graphene and graphene oxide.
In one embodiment, the graphene layer 40 includes one or more of a conductive polymer compound and a water-soluble polymer compound.
In one embodiment, the graphene layer 40 is made from a graphene composition.
In one embodiment, a graphene composition includes graphene, graphene oxide, and water.
In one embodiment, the mass ratio of graphene to graphene oxide may be (5-8) 1, for example, 5.
In one embodiment, the graphene composition includes one or more of a conductive polymer compound and a water-soluble polymer compound.
In one embodiment, the conductive polymer compound and/or the water-soluble polymer compound can adjust the viscosity and the surface tension of the graphene composition.
In one embodiment, the conductive polymer compound may include poly 3, 4-ethylenedioxythiophene/polystyrene sulfonate (PEDOT: PSS), polyaniline (PANI), and the like.
In one embodiment, graphene and graphene oxide are mixed to prepare a graphene composition, wherein the graphene oxide can serve as a surfactant to improve the dispersion degree of graphene in water, so that graphene powder is dispersed more uniformly in water.
In one embodiment, a conductive polymer compound and/or a water-soluble polymer compound may be added to a mixture of graphene and graphene oxide.
In one embodiment, the concentration and ratio of each component may be adjusted to achieve an optimal initial resistance of the graphene layer 40, for example, a graphene to graphene oxide mass ratio of 5.
In one embodiment, the graphene composition may be applied to the corresponding position of the slot antenna, for example, the end of the groove 22, and after drying, the remaining components in the graphene composition are cured to form a film, so as to form the graphene layer 40.
In one embodiment, the graphene composition may be applied to the corresponding position of the slot antenna by means of drop coating, screen printing, inkjet printing, or the like.
In one embodiment, the optimal initial resistance value can be achieved by adjusting the concentration and the proportion of the graphene composition, and the viscosity and the surface tension of the graphene composition can be adjusted to adapt to a coating mode, so that the processability of the antenna can be improved.
The slot antenna provided by the embodiment of the invention can work in a 5G frequency band, and the resistance characteristic can be changed through the arrangement of the graphene layer, so that the antenna can be tuned in the frequency band, is suitable for a multifunctional information system, and is beneficial to electromagnetic compatibility of the information system, and meanwhile, the system cost is reduced, the weight is reduced.
In the slot antenna according to the embodiment of the present invention, the resistance of the antenna (the resistance of the graphene layer) changes in response to external conditions such as a direct-current voltage, a bias voltage, a direct current, or temperature/humidity.
The slot antenna provided by the embodiment of the invention can endow the resistance value of the antenna with change under different external conditions, such as different voltages, so that the antenna has tunable capability, and the tuning return loss is lower than-10 dB, and the bandwidth covers 2.87GHz to 6.03GHz, thereby meeting the requirement of multi-band operation.
According to the slot antenna provided by the embodiment of the invention, the resistance value change of graphene layers with different formulas under different external conditions is utilized to serve as an adjustable resistor in an antenna structure, so that the working frequency band bandwidth of the antenna is tunable.
Hereinafter, a slot antenna according to an embodiment of the present invention will be further described with reference to the drawings and specific examples.
Example 1
The preparation method comprises the following steps of proportioning the graphene and the graphene oxide according to a mixing mode that the mass ratio of the graphene to the graphene oxide is 5, adding water to form a graphene composition, coating the graphene composition on the end part, close to the edge, of the groove 22 of the slot antenna shown in fig. 1, curing the graphene composition to form a film, and applying a voltage range of 0-10V in a mode of applying a direct current voltage to the butt-joint floor 20.
The bandwidth change of the slot antenna is shown in fig. 3 and 4, the resistance change range of the graphene layer 40 is 600-100 Ω, the initial resistance is 600 Ω, and the ink resistance is 100 Ω after 0-10V voltage is applied in a progressive manner by accumulating every 1V voltage. The bandwidth range of the slot antenna is adjusted from 6.03GHZ to 5.27GHZ. The overall trend is shown in fig. 5.
Example 2
A slot antenna was prepared in substantially the same manner as in example 1, with the main difference that: the mass ratio of graphene to graphene oxide used was 8. As shown in fig. 6, the bandwidth of the slot antenna is 3.89-6.12Ghz, and compared with an antenna with a mass ratio of graphene to graphene oxide of 5.
Example 3
A slot antenna was prepared in substantially the same manner as in example 1, with the main differences that: the mass ratio of graphene to graphene oxide used was 2. As shown in fig. 7, the bandwidth of the slot antenna is 3.61-5.4Ghz, and compared with an antenna with a mass ratio of graphene to graphene oxide of 5.
Comparative example
In this example, a slot antenna substantially the same as that in example 1 is adopted, except that the graphene composition having a mass ratio of uncoated graphene to graphene oxide of 5 is adopted, and the test result is shown in fig. 8, where the slot antenna has a fixed bandwidth and a small operating bandwidth, and is not beneficial to the operation of the slot antenna and even more beneficial to the switching of the operating frequency band of the slot antenna. It is shown that when the slot antenna is not coated with a graphene layer having a graphene to graphene oxide mass ratio of 5.
Unless otherwise defined, all terms used herein have the meanings commonly understood by those skilled in the art.
The described embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention, and various other substitutions, alterations, and modifications may be made by those skilled in the art within the scope of the present invention.
Claims (4)
1. A bandwidth-tunable 5G antenna based on a graphene composition comprises a graphene layer, wherein the graphene layer comprises the graphene composition, the graphene composition comprises graphene and one or more of graphene oxide, a conductive high molecular compound and a water-soluble high molecular compound;
the antenna, comprising:
the dielectric layer comprises a first surface and a second surface opposite to the first surface;
the grounding plate is arranged on the first surface of the dielectric layer; and
the conductive patch is arranged on the second surface of the dielectric layer;
wherein, graphite alkene layer set up in the ground plate gap and recess have been seted up on the ground plate, graphite alkene layer set up in the recess, the recess is rectangular shape, and its one end is formed in the edge of ground plate, the other end is located the inside of ground plate, graphite alkene layer set up in the recess be located the tip at the edge of ground plate, the gap is right angle U-shaped, its both ends are formed in the edge of ground plate, make be formed with on the ground plate the rectangle region that the gap encloses, partly be in the rectangle region that the gap encloses of recess, another part is located outside the rectangle region, graphite alkene layer is located in the rectangle region.
2. The antenna according to claim 1, wherein the mass ratio of the graphene to the graphene oxide is (5-8): 1.
3. The antenna of claim 1, wherein the graphene layer is rectangular.
4. The antenna of claim 1, wherein the dielectric layer is made of polytetrafluoroethylene, the ground plate is made of copper, and the conductive patch is made of copper.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911075812 | 2019-11-06 | ||
| CN2019110758121 | 2019-11-06 |
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| CN112768880A CN112768880A (en) | 2021-05-07 |
| CN112768880B true CN112768880B (en) | 2022-12-06 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321254A (en) * | 2011-09-30 | 2012-01-18 | 西安交通大学 | Preparation method for high-concentration graphene-polyaniline nanofiber composite dispersion liquid and high-concentration graphene-polyaniline nanofiber composite film |
| CN107623180A (en) * | 2017-08-02 | 2018-01-23 | 广东曼克维通信科技有限公司 | Millimeter-wave frequency adjustable antenna |
| EP3379645A1 (en) * | 2017-03-22 | 2018-09-26 | Vestel Elektronik Sanayi ve Ticaret A.S. | Solar antenna comprising graphene, solar unit comprising multiple solar antennas and method for operating a solar unit |
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- 2019-11-22 CN CN201911152708.8A patent/CN112768880B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321254A (en) * | 2011-09-30 | 2012-01-18 | 西安交通大学 | Preparation method for high-concentration graphene-polyaniline nanofiber composite dispersion liquid and high-concentration graphene-polyaniline nanofiber composite film |
| EP3379645A1 (en) * | 2017-03-22 | 2018-09-26 | Vestel Elektronik Sanayi ve Ticaret A.S. | Solar antenna comprising graphene, solar unit comprising multiple solar antennas and method for operating a solar unit |
| CN107623180A (en) * | 2017-08-02 | 2018-01-23 | 广东曼克维通信科技有限公司 | Millimeter-wave frequency adjustable antenna |
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| CN112768880A (en) | 2021-05-07 |
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