CN108063308A - KOCH fractal structure low-loss electromagnetic energy converters - Google Patents
KOCH fractal structure low-loss electromagnetic energy converters Download PDFInfo
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- CN108063308A CN108063308A CN201711253304.9A CN201711253304A CN108063308A CN 108063308 A CN108063308 A CN 108063308A CN 201711253304 A CN201711253304 A CN 201711253304A CN 108063308 A CN108063308 A CN 108063308A
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- geometric
- point
- medium substrate
- antenna patch
- cylindrical metal
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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
-
- 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
-
- 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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Abstract
The invention discloses a kind of KOCH fractal structures low-loss electromagnetic energy converters, including dielectric passivation, medium substrate and the earth plate that size from top to bottom is consistent and is bonded to each other, it is wherein bonded with dielectric passivation on the medium substrate of one side and is pasted with metal antenna patch, the middle part of medium substrate is equipped with the cylindrical metal conductor for extending vertically through medium substrate, and earth plate is equipped with the circular hole concentric with cylindrical metal conductor bottom surface.The present invention has lower return loss, good impedance matching and standing-wave ratio and higher gain, so as to the RF energy in efficient reception environment.
Description
Technical field
The invention belongs to electromagnetic energy reception antenna technical fields, and in particular to one kind is used to receive RF energy in environment
KOCH fractal structure low-loss electromagnetic energy converters.
Background technology
Three kinds of wireless transmission methods of current mainstream are compared, i.e. electromagnetic induction method, means of electromagnetic waves and magnetic coupling is humorous
It shakes mode.The respective advantage and disadvantage of these three modes are analyzed, such as transmission range, transimission power, efficiency of transmission and application range,
It was found that electromagnetic wave wireless transmission method has the characteristics that power for low power sensor.
The content of the invention
The technical problem to be solved by the present invention is to provide a kind of simple in structure and low damages of the rational KOCH fractal structures of design
Power consumption magnetic energy converter, it is the smaller size possessed for the more other antennas of the antenna, the loss of relatively low clawback, good
Impedance matching and higher gain.
The present invention adopts the following technical scheme that KOCH fractal structure low-losses electromagnetic energy is converted to solve above-mentioned technical problem
Device, it is characterised in that including dielectric passivation, medium substrate and the earth plate that size from top to bottom is consistent and is bonded to each other, wherein
It is bonded with dielectric passivation on the medium substrate of one side and is pasted with metal antenna patch, the middle part of medium substrate, which is equipped with, to be extended vertically through
The cylindrical metal conductor of medium substrate, earth plate are equipped with the circular hole concentric with cylindrical metal conductor bottom surface；The medium
The material of coating be Rogers RO6002, permittivity εr=2.94, thickness d=0.51mm, length and width is
30mm；The radius of the circular covering surface of the metal antenna patch is 0.098 λ, and wherein λ=122mm, λ are 2.45GHz radio frequencies
Wavelength, thickness 0.02mm, material are copper, and the material of the medium substrate is Rogers RO6010, permittivity εr=
10.2, thickness d=2.54mm, length and width is 30mm, central point and the medium substrate upper surface of metal antenna patch
Center position is consistent；The design shape and size of the metal antenna patch meet following requirement, establish plane rectangular coordinates
There is the coordinate of following point in system successivelyB(-7.5,0)、C(-3.5,0)、 WithLine segment is formed successively | AB |, | BC |, | CD |, |
DE |, | EF |, | FG | and | GQ |, line segment derived above is sequentially connected, initial graphics one are obtained in x-axis and y-axis plane,
Initial graphics one are made into minute surface as symmetry axis using y-axis positive axis and symmetrically obtain initial graphics two, initial graphics one and initial graphics
Two merging obtain geometric figure one, by geometric figure one with pointFor the point of rotation, 45 ° and whole are rotated clockwise
Body is reduced into original 0.8 times, obtains geometric figure two, by geometric figure one with pointIt is suitable for the point of rotation
Hour hands are rotated by 90 °, and obtain geometric figure three, by geometric figure one with pointFor the point of rotation, rotate clockwise
135 ° and original 0.8 times is integrally reduced into, geometric figure four is obtained, by geometric figure one with pointFor rotation
Turning point rotates clockwise 180 °, obtains geometric figure five, geometric figure one, geometric figure two, geometric figure three, geometric figure
Four and geometric figure five merging obtain symmetric figure one, by symmetric figure one with straight lineTo be right
Axis is claimed to carry out mirror symmetry, obtains symmetric figure two, symmetric figure one and the merging of symmetric figure two obtain closed figure, will close
The reduced radius of the circular covering surface of figure obtains the design shape and ruler of required metal antenna patch to original 0.4273 times
It is very little, it cuts to obtain metal antenna patch according to design shape and size；One end of the cylindrical metal conductor and metal antenna
Patch connects, and the material of cylindrical metal conductor is copper, bottom surface radius r=0.5mm, thickness d=2.54mm, cylindrical metal
The junction center of circle of conductor and metal antenna patch and the vertical range of four sides of medium substrate be respectively 16.59mm,
16.59mm, 13.41mm and 13.41mm, the aperture R=1.9mm of circular hole, institute on the earth plate opposite with cylindrical metal conductor
The output interface for stating the cylindrical metal conductor other end is connected with energy management circuit, which is used to be absorbed into
Energy stored.
The present invention technique effect be：KOCH fractal structure low-loss electromagnetic energy converter have lower return loss,
Good impedance matching and standing-wave ratio and higher gain, so as to the RF energy in efficient reception environment.
Description of the drawings
Fig. 1 is the structure diagram of metal antenna patch；
Fig. 2 is KOCH fractal structure low-loss electromagnetic energy converter structure schematic diagrames；
Fig. 3 is time using the KOCH fractal structure low-loss electromagnetic energy converters of HFSS antenna modelings simulation software simulation
Ripple loss figure；
Fig. 4 is the 3D using the KOCH fractal structure low-loss electromagnetic energy converters of HFSS antenna modelings simulation software simulation
Gain diagram.
In figure：1st, dielectric passivation, 2, medium substrate, 3, earth plate, 4, metal antenna patch, 5, cylindrical metal leads
Body, 6, circular hole.
Specific embodiment
Below in conjunction with the attached drawing in the present invention, the technical solution in specific implementation process of the present invention is carried out clear, complete
Whole, specific description.
The core of the invention is KOCH fractal structure low-loss electromagnetic energy converter designs, in microstrip antenna designs
Need the size of the metal antenna patch to KOCH fractal structure low-loss electromagnetic energy converters, the size of medium substrate, thickness
Theoretic estimation is carried out, KOCH points of shape of suitable specific frequency more quickly could be accurately found when simulated experiment
Structure low-loss electromagnetic energy converter.So below by taking rectangular microstrip antenna as an example, the explanation each data parameters of microstrip antenna
Theoretical calculation method.
Patch size L × W, patch width W are：
In (1) formula, c is the light velocity, f0For forbidden band centre frequency, εrFor relative dielectric constant.
The relative efficiency permittivity ε of microstrip antenna medium substratereFor：
H represents thickness of dielectric layers, and in order to reduce influence of the surface wave to antenna performance, the thickness of dielectric substrate should
Meet theoretical calculation formula：
Wherein fuFor the highest frequency of the work of microstrip antenna.
The equivalent radiated power gap length △ L of microstrip antenna are：
Then the length L of microstrip antenna patch is：
The size L of earth plateg×WgMeet following theoretical formula
Lg≥L+6h(6)
Wg≥W+6h(7)
Rectangular microstrip antenna is that coaxial line is fed, after the length and width of rectangular patch is determined, generally
The normal impedance of 50 Ω is added in microstrip antenna.
As shown in Figs. 1-2, KOCH fractal structures low-loss electromagnetic energy converter, it is consistent and mutual including size from top to bottom
Dielectric passivation 1, medium substrate 2 and the earth plate 3 of fitting, are pasted wherein being bonded with dielectric passivation 1 on the medium substrate 2 of one side
With metal antenna patch 4, the middle part of medium substrate 2 is equipped with the cylindrical metal conductor 5 for extending vertically through medium substrate 2, ground connection
Plate 3 is equipped with the circular hole 6 concentric with 5 bottom surface of cylindrical metal conductor；The material of the dielectric passivation 1 is Rogers
RO6002, permittivity εr=2.94, thickness d=0.51mm, length and width is 30mm；The metal antenna patch 4
The radius of circular covering surface be 0.098 λ, wherein λ=122mm, λ be 2.45GHz radio frequencies wavelength, thickness 0.02mm, material
For copper, the material of the medium substrate 2 is Rogers RO6010, permittivity εr=10.2, thickness d=2.54mm, length and
Width is 30mm, and the central point of metal antenna patch 4 is consistent with the center position of 2 upper surface of medium substrate；The metal
The design shape and size of antenna patch 4 meet following requirement, establish plane right-angle coordinate, the coordinate for having following point successivelyB(-7.5,0)、C(-3.5,0)、
WithLine segment is formed successively | AB |, | BC |, | CD |, | DE |, | EF |, | FG | and | GQ |, by line segment derived above
It is sequentially connected, initial graphics one is obtained in x-axis and y-axis plane, initial graphics one are made into minute surface using y-axis positive axis as symmetry axis
Symmetrical to obtain initial graphics two, initial graphics one and the merging of initial graphics two obtain geometric figure one, by geometric figure one with pointFor the point of rotation, rotate clockwise 45 ° and be integrally reduced into original 0.8 times, obtain geometric figure two, it will
Geometric figure one is with pointFor the point of rotation, 90 ° are rotated clockwise, obtains geometric figure three, by geometric figure one
With pointFor the point of rotation, rotate clockwise 135 ° and be integrally reduced into original 0.8 times, obtain geometric figure
Four, by geometric figure one with pointFor the point of rotation, 180 ° are rotated clockwise, obtains geometric figure five, geometry
Figure one, geometric figure two, geometric figure three, geometric figure four and the merging of geometric figure five obtain symmetric figure one, will be symmetrical
Figure one is with straight lineMirror symmetry is carried out for symmetry axis, obtains symmetric figure two, symmetric figure
One and symmetric figure two merging obtain closed figure, by the reduced radius of the circular covering surface of closed figure to originally 0.4273
The design shape and size of metal antenna patch 4 needed for obtaining again cut to obtain metal antenna patch according to design shape and size
Piece 4；One end of the cylindrical metal conductor 5 is connected with metal antenna patch 4, and the material of cylindrical metal conductor 5 is copper,
Bottom surface radius r=0.5mm, thickness d=2.54mm, the junction center of circle and Jie of the cylindrical metal conductor 5 with metal antenna patch 4
The vertical range of 2 four sides of matter substrate is respectively 16.59mm, 16.59mm, 13.41mm and 13.41mm, with cylindrical metal
The aperture R=1.9mm of circular hole 6 on the opposite earth plate 3 of conductor 5, the output interface of 5 other end of cylindrical metal conductor with
Energy management circuit is connected, which is used to store the energy being absorbed into.
Fig. 3 is time using the KOCH fractal structure low-loss electromagnetic energy converters of HFSS antenna modelings simulation software simulation
Ripple loss figure, as seen from the figure, the return loss of the KOCH fractal structure low-loss electromagnetic energy converters is -37dB, than other phases
The return loss of same volume antenna is also small, and performance is very good.
Fig. 4 is the 3D using the KOCH fractal structure low-loss electromagnetic energy converters of HFSS antenna modelings simulation software simulation
Gain diagram, as seen from the figure, the KOCH fractal structures low-loss electromagnetic energy converter are 3.17dB in the maximum gain of 2.45GHz,
Directionality is highly stable.
Basic principle, main features and advantages embodiment above describes the present invention, the technical staff of the industry should
Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe the originals of the present invention
Reason, under the scope for not departing from the principle of the invention, various changes and modifications of the present invention are possible, these changes and improvements are each fallen within
In the scope of protection of the invention.
Claims (1)
1.KOCH fractal structure low-loss electromagnetic energy converters, it is characterised in that consistent including size from top to bottom and be bonded to each other
Dielectric passivation, medium substrate and earth plate, be pasted with metal wherein being bonded with dielectric passivation on the medium substrate of one side
Antenna patch, the middle part of medium substrate are equipped with the cylindrical metal conductor for extending vertically through medium substrate, and earth plate is equipped with and circle
The concentric circular hole in cylindricality metallic conductor bottom surface；The material of the dielectric passivation be Rogers RO6002, permittivity εr=
2.94, thickness d=0.51mm, length and width is 30mm；The radius of the circular covering surface of the metal antenna patch is
0.098 λ, wherein λ=122mm, λ are the wavelength of 2.45GHz radio frequencies, and thickness 0.02mm, material is copper, the medium substrate
Material be Rogers RO6010, permittivity εr=10.2, thickness d=2.54mm, length and width is 30mm, metal day
The central point of line patch is consistent with the center position of medium substrate upper surface；The design shape and ruler of the metal antenna patch
The very little following requirement of satisfaction, establishes plane right-angle coordinate, the coordinate for having following point successivelyB(-7.5,0)、
C(-3.5,0)、 WithSuccessively
Form line segment | AB |, | BC |, | CD |, | DE |, | EF |, | FG | and | GQ |, line segment derived above is sequentially connected, in x-axis and y
Initial graphics one are obtained in axial plane, initial graphics one are made minute surface as symmetry axis using y-axis positive axis symmetrically obtains initial graphics
Two, initial graphics one and the merging of initial graphics two obtain geometric figure one, by geometric figure one with pointFor
The point of rotation rotates clockwise 45 ° and is integrally reduced into original 0.8 times, geometric figure two obtained, by geometric figure one with pointFor the point of rotation, 90 ° are rotated clockwise, obtains geometric figure three, by geometric figure one with pointFor the point of rotation, rotate clockwise 135 ° and be integrally reduced into original 0.8 times, obtain geometric figure four,
By geometric figure one with pointFor the point of rotation, 180 ° are rotated clockwise, obtains geometric figure five, geometric figure
First, geometric figure two, geometric figure three, geometric figure four and the merging of geometric figure five obtain symmetric figure one, by symmetric figure
One with straight lineMirror symmetry is carried out for symmetry axis, obtains symmetric figure two, one He of symmetric figure
The merging of symmetric figure two obtains closed figure, and the reduced radius of the circular covering surface of closed figure is obtained to original 0.4273 times
To the design shape and size of required metal antenna patch, cut to obtain metal antenna patch according to design shape and size；Institute
The one end for stating cylindrical metal conductor is connected with metal antenna patch, and the material of cylindrical metal conductor is copper, bottom surface radius r
=0.5mm, thickness d=2.54mm, cylindrical metal conductor and the junction center of circle of metal antenna patch and medium substrate four
The vertical range of side is respectively 16.59mm, 16.59mm, 13.41mm and 13.41mm, and opposite with cylindrical metal conductor connects
The aperture R=1.9mm of circular hole on floor, output interface and the energy management circuit phase of the cylindrical metal conductor other end
Even, which is used to store the energy being absorbed into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711253304.9A CN108063308A (en) | 2017-12-02 | 2017-12-02 | KOCH fractal structure low-loss electromagnetic energy converters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711253304.9A CN108063308A (en) | 2017-12-02 | 2017-12-02 | KOCH fractal structure low-loss electromagnetic energy converters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108063308A true CN108063308A (en) | 2018-05-22 |
Family
ID=62135237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711253304.9A Withdrawn CN108063308A (en) | 2017-12-02 | 2017-12-02 | KOCH fractal structure low-loss electromagnetic energy converters |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108063308A (en) |
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2017
- 2017-12-02 CN CN201711253304.9A patent/CN108063308A/en not_active Withdrawn
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| PB01 | Publication | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180522 |
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| WW01 | Invention patent application withdrawn after publication |