CN108063309A - High-gain absorbing property lifting device - Google Patents
High-gain absorbing property lifting device Download PDFInfo
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- CN108063309A CN108063309A CN201711253327.XA CN201711253327A CN108063309A CN 108063309 A CN108063309 A CN 108063309A CN 201711253327 A CN201711253327 A CN 201711253327A CN 108063309 A CN108063309 A CN 108063309A
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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
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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
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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Abstract
The invention discloses a kind of high-gain absorbing property lifting devices, including the medium substrate and earth plate that size from top to bottom is consistent and is bonded to each other, metal antenna patch is wherein pasted on medium substrate, 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
High-gain absorbing property lifting device.
Background technology
In recent years, super low-power consumption, low-voltage electronic component and circuit it is a large amount of occur and actual life in it is a large amount of not
Widely using for the electronic microsystem of battery is easily replaced, causes the extensive pass that people study ambient radio-frequency energy collection technique
Note.
Currently, the wireless sensing of battery is mainly replaced in ambient radio-frequency energy is collected research and application in low-power consumption and being not easy
Network node and implanted electronic equipment etc..
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 rational high-gain absorbing properties of design to carry
Rise device, the smaller size possessed for the more other antennas of the antenna, the loss of relatively low clawback, good impedance matching
Higher gain.
The present invention adopts the following technical scheme that high-gain absorbing property lifting device is special to solve above-mentioned technical problem
Sign is to include the consistent medium substrate of size and earth plate from top to bottom, and wherein medium substrate upper surface is pasted with metal antenna patch
Piece, 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 cylinder gold
Belonging to the concentric circular hole in conductor bottom surface, the radius of the circular covering surface of the metal antenna patch is 0.1115 λ, wherein λ=
122mm, λ are the wavelength of 2.45GHz radio frequencies, and thickness 0.02mm, material is copper, and the material of the medium substrate is Rogers
RO6010, permittivity εr=10.2, thickness d=2.54mm, length and width is 30mm, the central point of metal antenna patch
It is consistent with the center position of medium substrate upper surface；The design shape and size of the metal antenna patch, which meet, as follows will
It asks, establishes plane right-angle coordinate, the design of metal antenna patch is carried out according to the following formula：
The line segment that above formula is obtained is sequentially connected, and obtains original figure one, by original figure one using straight line y=0 as
Symmetry axis carries out mirror symmetry, obtains original figure two, and original figure one and original figure two merge, and obtain geometric figure one,
By geometric figure one with pointAs the point of rotation, 30 ° are rotated clockwise and along x-axis and y-axis direction
Original 0.8 times is narrowed down to respectively, obtains geometric figure two, by geometric figure one with pointMake
For the point of rotation, 60 ° are rotated clockwise, obtains geometric figure three, by geometric figure one with point
As the point of rotation, rotate clockwise 90 ° and narrow down to original 0.8 times respectively along x-axis and y-axis direction, obtain geometric figure four,
Geometric figure one is expanded to original 1.2 times along x-axis and y-axis direction respectively, obtains expanding geometric figure one, will be enlarged by geometry
Figure one, geometric figure two, geometric figure three and the merging of geometric figure four obtain fractal graph one, by fractal graph one with y=0
Mirror symmetry is carried out for symmetry axis, fractal graph two is obtained, is sequentially connected a little：
, isosceles triangle ABC is obtained, fractal graph one, fractal graph two and isosceles triangle ABC are merged and rotated
Figure one, by rotating graphs one with pointAs the point of rotation, divide
It is not rotated by 90 ° successively, 180 ° and 270 °, obtains rotating graphs two, rotating graphs three and rotating graphs four.Rotating graphs one, rotation
Turn figure two, rotating graphs three and the merging of rotating graphs four and obtain closed figure, by the radius of the circular covering surface of closed figure
Narrow down to original 0.24765 times obtain needed for the metal antenna patch of given shape and size obtain required metal patch；
One end of the cylindrical metal conductor is connected with metal antenna patch, and the material of cylindrical metal conductor is copper, and bottom surface is partly
Footpath 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 16.51mm, 16.51mm, 13.49mm and 13.49mm, opposite with cylindrical metal conductor
The aperture R=1.9mm of circular hole on earth plate, 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.
The present invention technique effect be：High-gain absorbing property lifting device has lower return loss, good resistance
Anti- 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 high-gain absorbing property lifting device structure diagram；
Fig. 3 is the return loss using the high-gain absorbing property lifting device of HFSS antenna modelings simulation software simulation
Figure；
Fig. 4 is the 3D gain diagrams using the high-gain absorbing property lifting device of HFSS antenna modelings simulation software simulation.
In figure：1st, medium substrate, 2, earth plate, 3, metal antenna patch, 4, cylindrical metal conductor, 5, 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 the design of high-gain absorbing property lifting device, is needed in microstrip antenna designs to height
The size of the metal antenna patch of gain absorbing property lifting device, the size of medium substrate, thickness carry out theoretic estimation,
The high-gain absorbing property lifting device of suitable specific frequency more quickly could be accurately found when simulated experiment.Institute
By following by taking rectangular microstrip antenna as an example, the theoretical calculation method of each data parameters of microstrip antenna is explained.
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, high-gain absorbing property lifting device, including Jie that size from top to bottom is consistent and is bonded to each other
Matter substrate 1 and earth plate 2, wherein 1 upper surface of medium substrate are pasted with metal antenna patch 3, and the middle part of medium substrate 1, which is equipped with, hangs down
The straight cylindrical metal conductor 4 for running through medium substrate 1, earth plate 2 are equipped with the circular hole concentric with 4 bottom surface of cylindrical metal conductor
5；The radius of the circular covering surface of the metal antenna patch 3 is 0.11115 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 1 is Rogers RO6010, permittivity εr=
10.2, thickness d=2.54mm, length and width is 30mm, the central point of metal antenna patch 3 and 1 upper surface of medium substrate
Center position it is consistent；The design shape and size of the metal antenna patch 3 meet following requirement, the metal antenna patch
The design shape and size of piece meet following requirement, establish plane right-angle coordinate, and metal antenna patch is carried out according to the following formula
The design of piece：
The line segment that above formula is obtained is sequentially connected, and obtains original figure one, by original figure one using straight line y=0 as
Symmetry axis carries out mirror symmetry, obtains original figure two, and original figure one and original figure two merge, and obtain geometric figure one,
By geometric figure one with pointAs the point of rotation, rotate clockwise 30 ° and divide along x-axis and y-axis direction
Original 0.8 times is not narrowed down to, obtains geometric figure two, by geometric figure one with pointAs
The point of rotation rotates clockwise 60 °, obtains geometric figure three, by geometric figure one with pointMake
For the point of rotation, rotate clockwise 90 ° and narrow down to original 0.8 times respectively along x-axis and y-axis direction, obtain geometric figure four, it will
Geometric figure one is expanded to original 1.2 times respectively along x-axis and y-axis direction, obtains expanding geometric figure one, will be enlarged by geometric graph
Shape one, geometric figure two, geometric figure three and geometric figure four merging obtains fractal graph one, by fractal graph one using y=0 as
Symmetry axis carries out mirror symmetry, obtains fractal graph two, is sequentially connected a little：
, isosceles triangle ABC is obtained, fractal graph one, fractal graph two and isosceles triangle ABC are merged and rotated
Figure one, by rotating graphs one with pointAs the point of rotation, divide
It is not rotated by 90 ° successively, 180 ° and 270 °, obtains rotating graphs two, rotating graphs three and rotating graphs four.Rotating graphs one, rotation
Turn figure two, rotating graphs three and the merging of rotating graphs four and obtain closed figure, by the radius of the circular covering surface of closed figure
It narrows down to original 0.24765 times and obtains required given shape and the metal antenna patch 3 of size；The cylindrical metal conductor
4 one end is connected with metal antenna patch 3, and the material of cylindrical metal conductor 4 is copper, bottom surface radius r=0.5mm, thickness d
=2.54mm, cylindrical metal conductor 4 are vertical with 1 four sides in the junction center of circle and medium substrate of metal antenna patch 3
The circle on respectively 16.51mm, 16.51mm, 13.49mm and 13.49mm, the earth plate 2 opposite with cylindrical metal conductor 4
The aperture R=1.9mm in hole, the output interface of 4 other end of cylindrical metal conductor are connected with energy management circuit, the energy
Management circuit is used to store the energy being absorbed into.
Fig. 3 is the return loss using the high-gain absorbing property lifting device of HFSS antenna modelings simulation software simulation
Figure, as seen from the figure, the return loss of the high-gain absorbing property lifting device is -38dB, than returning for other same volume antennas
Ripple loss is also small, and performance is very good.
Fig. 4 is the 3D gain diagrams for the high-gain absorbing property lifting device simulated using HFSS antenna modelings simulation software,
As seen from the figure, which is 3.6dB in the gain of 2.45GHz, and 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. high-gain absorbing property lifting device, it is characterised in that including the consistent medium substrate of size from top to bottom and earth plate,
Wherein medium substrate upper surface is pasted with metal antenna patch, and the middle part of medium substrate is equipped with the cylinder for extending vertically through medium substrate
Shape metallic conductor, earth plate are equipped with the circular hole concentric with cylindrical metal conductor bottom surface, the circle of the metal antenna patch
The radius of covering surface is 0.1 λ, and wherein λ=122mm, λ are the wavelength of 2.45GHz radio frequencies, and thickness 0.02mm, material is copper, institute
The material of medium substrate is stated as Rogers RO6010, permittivity εr=10.2, thickness d=2.54mm, length and width is
30mm, the central point of metal antenna patch are consistent with the center position of medium substrate upper surface；The metal antenna patch
Design shape and size meet following requirement, establish plane right-angle coordinate, and metal antenna patch is carried out according to the following formula
Design：
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</msqrt>
<mn>2</mn>
</mfrac>
<mo>)</mo>
<mo>(</mo>
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<mi>n</mi>
<mfrac>
<mi>&pi;</mi>
<mn>12</mn>
</mfrac>
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,
Isosceles triangle ABC is obtained, fractal graph one, fractal graph two and isosceles triangle ABC are merged to obtain rotating graphs
One, by rotating graphs one with pointAs the point of rotation, respectively according to
It is secondary be rotated by 90 °, 180 ° and 270 °, obtain rotating graphs two, rotating graphs three and rotating graphs four.Rotating graphs one, rotation figure
Shape two, rotating graphs three and the merging of rotating graphs four obtain closed figure, by the reduced radius of the circular covering surface of closed figure
The metal antenna patch that required given shape and size are obtained to original 0.24765 times obtains required metal patch；It is described
One end of 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 four sides of medium substrate
The vertical range on side is respectively 16.51mm, 16.51mm, 13.49mm and 13.49mm, the ground connection opposite with cylindrical metal conductor
The aperture R=1.9mm of circular hole on plate, the output interface of the cylindrical metal conductor other end are connected with energy management circuit,
The energy management circuit is used to store the energy being absorbed into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711253327.XA CN108063309A (en) | 2017-12-02 | 2017-12-02 | High-gain absorbing property lifting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711253327.XA CN108063309A (en) | 2017-12-02 | 2017-12-02 | High-gain absorbing property lifting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108063309A true CN108063309A (en) | 2018-05-22 |
Family
ID=62135847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711253327.XA Withdrawn CN108063309A (en) | 2017-12-02 | 2017-12-02 | High-gain absorbing property lifting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108063309A (en) |
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2017
- 2017-12-02 CN CN201711253327.XA patent/CN108063309A/en not_active Withdrawn
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Application publication date: 20180522 |
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