CN106410390A - Ten-corner WiFi energy collecting antenna - Google Patents
Ten-corner WiFi energy collecting antenna Download PDFInfo
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- CN106410390A CN106410390A CN201610815838.5A CN201610815838A CN106410390A CN 106410390 A CN106410390 A CN 106410390A CN 201610815838 A CN201610815838 A CN 201610815838A CN 106410390 A CN106410390 A CN 106410390A
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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
-
- 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
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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 ten-corner WiFi energy collecting antenna. The ten-corner WiFi energy collecting antenna comprises a dielectric covering layer, a dielectric substrate and a grounding plate which are consistent in size and mutually attached from top to bottom; a metal antenna patch is attached to one side of the dielectric substrate where the dielectric covering layer is attached; a cylindrical metal conductor which vertically penetrates the dielectric substrate is arranged in the middle of the dielectric substrate; and the grounding plate is provided with a round hole which is concentric with the bottom surface of the cylindrical metal conductor. The ten-corner WiFi energy collecting antenna has lower return loss, good impedance matching and standing-wave ratio as well as relatively high gain, and accordingly can receive RF energy in the environment efficiently.
Description
Technical field
The invention belongs to electromagnetic energy reception antenna technical field is and in particular to one kind is used for receiving radio-frequency (RF) energy in environment
Ten jiaos of WiFi collection of energy antennas.
Background technology
In intelligent building, the sensor node that each building is at least up to a hundred is distributed in each portion in building body
Position, for parameters such as monitoring temperature, brightness and flows of the people；There is provided power supply by wiring for these sensor nodes, its cost is
Sufficiently expensive, and be how to judge that the battery of which node exhausts to go forward side by side using battery main problems faced of powering backward
Row is changed, and this is commercially difficult to accept, and being aided with rechargeable battery using ambient radio-frequency energy collection technique is then its ratio
Comparatively ideal power supply mode.
Content of the invention
Present invention solves the technical problem that there is provided a kind of structure ten jiaos of WiFi collection of energy simple and reasonable in design
Antenna, the less size having for the more other antenna of this antenna, relatively low clawback loss, good impedance matching and
Higher gain.
The present invention is to solve above-mentioned technical problem to adopt the following technical scheme that, ten jiaos of WiFi collection of energy antennas, its feature
It is including consistent size from top to bottom and dielectric passivation bonded to each other, medium substrate and earth plate, wherein cover with medium
It is pasted with metal antenna paster, the middle part of medium substrate is provided with and extends vertically through medium substrate on the medium substrate of cap rock laminating side
Cylindrical metal conductor, earth plate is provided with the circular hole concentric with cylindrical metal conductor bottom surface；Described dielectric passivation
Material is Rogers RO6002, DIELECTRIC CONSTANT εr=2.94, thickness d=0.51mm, length and width is 30mm；Described gold
The radius belonging to the circular coverage rate of antenna patch is 0.11311 λ, and wherein λ=122mm, λ are the wavelength of 2.45GHz radio frequency, thickness
For 0.02mm, material is copper, and the material of described medium substrate is Rogers RO6010, DIELECTRIC CONSTANT εr=10.2, thickness d=
2.54mm, length and width is 30mm, the center position one of the central point of metal antenna paster and medium substrate upper surface
Cause；The design shape of described metal antenna paster and size meet following requirement, set up plane right-angle coordinate, will (0mm ,-
2.5mm) as starting point, (13.75mm, -2.5mm) is that another end points makes the line segment of an a length of 13.75mm along x-axis positive direction
One, with point (13.75mm, -2.5mm) for the point of rotation, line segment one is rotated 117 ° in the counterclockwise direction, with curvilinear equationIntersection point be H (15.45246mm, -5.84127mm), with straight line y=-x for axis of symmetry make
Minute surface symmetrically obtains point L (5.84127mm, -15.45246mm), then the direction being 63 ° along line segment one and x-axis angle, in coordinate axess
Extend to original 2 times in 4th interval, be extended line segment two, by extending line segment two, minute surface pair is made for axis of symmetry with straight line y=-x
Claim to be extended line segment three, extend line segment two and the intersection point of prolongation line segment three is
Difference junction point H (15.45246mm, -5.84127mm),And L
(5.84127mm, -15.45246mm),Obtain line segment HW and line
Section LW, again by initial point (0mm, 0mm) as starting point, makes the line segment of an a length of 2.5mm along x-axis positive direction, with
(2.5mm, -1.25mm) is the center of circle of first curve, with (2.5mm, 0mm) for end point, with (3.75mm, -1.25mm) is
Another end points, radius r1=1.25mm, makes angle of circumference and is 90 °, and direction is the circular arc protruding to x-axis and y-axis positive direction, with
(5mm, -1.25mm) is the center of circle of second curve, with (3.75mm, -1.25mm) for end point, with (6.25mm, -1.25mm)
For another end points, radius r2=1.25mm, make angle of circumference be 180 °, direction be to y-axis negative direction protrude circular arc, then with
(7.5mm, -1.25mm) is the center of circle of the 3rd curve, with (6.25mm, -1.25mm) for end point, with (7.5mm, 0mm) is
Another end points, radius r3=1.25mm, makes angle of circumference and is 90 °, and direction is the circle protruding to x-axis negative direction and y-axis positive direction
Arc, the center of circle being the 4th curve with (7.5mm, -2.5mm), with (7.5mm, 0mm) for end point, with (10mm, -2.5mm) be
Another end points, radius r4=2.5mm, makes angle of circumference and is 90 °, and direction is the circular arc protruding to x-axis and y-axis positive direction；With
(13.75mm, -2.5mm) is the center of circle of the 5th curve, with (10mm, -2.5mm) be end point, with H (15.45246mm, -
It is 5.84127mm) another end points, radius r5=3.75mm, makes angle of circumference and is 117 °, direction is convex to x-axis and y-axis negative direction
The circular arc going out, obtains initial graphics one, with straight line y=-x as axis of symmetry, initial graphics one is carried out minute surface symmetrically, obtains initial
Figure two, line segment HW, line segment LW, initial graphics one and initial graphics two merge and obtain rotating graphs one, by rotating graphs one with
PointFor the point of rotation, clockwise successively 36 ° of rotation, 72 °, 108 °,
144 °, 180 °, 216 °, 252 °, 288 ° and 324 °, respectively obtain rotating graphs two, rotating graphs three, rotating graphs four, rotation
Figure five, rotating graphs six, rotating graphs seven, rotating graphs eight, rotating graphs nine and rotating graphs ten, rotating graphs one, rotation
Turn figure two, rotating graphs three, rotating graphs four, rotating graphs five, rotating graphs six, rotating graphs seven, rotating graphs eight, rotation
Turn figure nine and rotating graphs ten merging obtains closed figure, the circular coverage rate reduced radius of closed figure are original
0.38333 times of design shape obtaining required metal antenna paster and size, obtain metal according to design shape and size cutting
Antenna patch；One end of described cylindrical metal conductor is connected with metal antenna paster, and the material of cylindrical metal conductor is copper,
The junction center of circle of its bottom surface radius r=0.5mm, thickness d=2.54mm, cylindrical metal conductor and metal antenna paster and Jie
The vertical dimension of four sides of matter substrate is respectively 16.59mm, 16.59mm, 13.41mm and 13.41mm, leads with cylindrical metal
The aperture R=1.9mm of circular hole on the earth plate of body phase pair, the output interface of the described cylindrical metal conductor other end and energy pipe
Reason circuit is connected, and this energy management circuit is used for being stored the energy absorbing.
The present invention has lower return loss, good impedance matching and standing-wave ratio and higher gain, so as to
Radio-frequency (RF) energy in enough efficient reception environment.
Brief description
Fig. 1 is the structural representation of metal antenna paster；
Fig. 2 is ten jiaos of WiFi collection of energy antenna structure views；
Fig. 3 is the return loss plot of ten jiaos of WiFi collection of energy antennas using the simulation of HFSS antenna modeling simulation software；
Fig. 4 is ten jiaos of WiFi collection of energy antenna feed impedance figures using the simulation of HFSS antenna modeling simulation software.
In figure：1st, dielectric passivation, 2, medium substrate, 3, earth plate, 4, metal antenna paster, 5, cylindrical metal leads
Body, 6, circular hole.
Specific embodiment
Below in conjunction with the accompanying drawing in the present invention, the technical scheme in specific implementation process of the present invention is carried out clear, complete
Whole, specific description.
The core of this invention is ten jiaos of WiFi collection of energy Antenna Design, needs in microstrip antenna designs to ten jiaos
The size of the metal antenna paster of WiFi collection of energy antenna, the size of medium substrate, thickness carry out theoretic estimation, ability
Ten jiaos of WiFi collection of energy antennas of suitable characteristic frequency are more quickly accurately found when simulation experiment.So below
Taking rectangular microstrip antenna as a example, the theoretical calculation method of explanation each data parameters of microstrip antenna.
Patch size L × W, patch width W is：
In (1) formula, c is the light velocity, f0For forbidden band mid frequency, εrFor relative dielectric constant.
The relative efficiency DIELECTRIC CONSTANT ε of microstrip antenna medium substratereFor：
H represents thickness of dielectric layers, and in order to reduce the impact to antenna performance for the surface wave, the thickness of dielectric substrate should
Meet theoretical calculation formula：
Wherein fuHighest frequency for the work of microstrip antenna.
The equivalent radiated power gap length Δ L of microstrip antenna is：
Then length L of microstrip antenna paster is：
Size L of earth plateg×WgMeet following theoretical formula
Lg≥L+6h (6)
Wg≥W+6h (7)
Rectangular microstrip antenna be that coaxial line is fed, after determining the length and width of rectangular patch, typically
The normal impedance of 50 Ω is added in microstrip antenna.
As shown in Figure 1-2, ten jiaos of WiFi collection of energy antennas, including consistent size from top to bottom and medium bonded to each other
Cover layer 1, medium substrate 2 and earth plate 3, the medium substrate 2 of side of wherein fitting with dielectric passivation 1 is pasted with metal sky
Line paster 4, the middle part of medium substrate 2 is provided with the cylindrical metal conductor 5 extending vertically through medium substrate 2, earth plate 3 be provided with
The concentric circular hole in cylindrical metal conductor 5 bottom surface 6；The material of described dielectric passivation 1 is Rogers RO6002, dielectric constant
εr=2.94, thickness d=0.51mm, length and width is 30mm；The radius of the circular coverage rate of described metal antenna paster 4
For 0.11311 λ, wherein λ=122mm, λ is the wavelength of 2.45GHz radio frequency, and thickness is 0.02mm, and material is copper, described medium base
The material of plate 2 is Rogers RO6010, DIELECTRIC CONSTANT εr=10.2, thickness d=2.54mm, length and width is 30mm, gold
The central point belonging to antenna patch 4 is consistent with the center position of medium substrate 2 upper surface；The design of described metal antenna paster 4
Shape and size meet following requirement, set up plane right-angle coordinate, by (0mm, -2.5mm) as starting point, (13.75mm, -
It is 2.5mm) that another end points makes the line segment one of an a length of 13.75mm along x-axis positive direction, with point (13.75mm, -2.5mm) be
The point of rotation, line segment one is rotated 117 ° in the counterclockwise direction, with curvilinear equationIntersection point be H
(15.45246mm, -5.84127mm), with straight line y=-x for axis of symmetry make minute surface symmetrically obtain point L (5.84127mm, -
15.45246mm), the direction being 63 ° then along line segment one and x-axis angle, extends to original 2 times in coordinate axess the 4th interval,
It is extended line segment two, prolongation line segment two is made minute surface with straight line y=-x for axis of symmetry and is symmetrically extended line segment three, extended line
Section two and extend line segment three intersection point beJunction point H respectively
(15.45246mm, -5.84127mm),With L (5.84127mm ,-
15.45246mm)、Obtain line segment HW and line segment LW, again will be former
Point (0mm, 0mm), as starting point, makes the line segment of an a length of 2.5mm along x-axis positive direction, with (2.5mm, -1.25mm) for the
The center of circle of one curve, with (2.5mm, 0mm) for end point, with (3.75mm, -1.25mm) for another end points, radius r1=
1.25mm, makes angle of circumference and is 90 °, and direction is the circular arc protruding to x-axis and y-axis positive direction, with (5mm, -1.25mm) for second
The center of circle of individual curve, with (3.75mm, -1.25mm) for end point, with (6.25mm, -1.25mm) for another end points, radius r2=
1.25mm, makes angle of circumference and is 180 °, and direction is the circular arc protruding to y-axis negative direction, then with (7.5mm, -1.25mm) for the
The center of circle of three curves, with (6.25mm, -1.25mm) for end point, with (7.5mm, 0mm) for another end points, radius r3=
1.25mm, makes angle of circumference and is 90 °, and direction is the circular arc protruding to x-axis negative direction and y-axis positive direction, with (7.5mm ,-
2.5mm) be the 4th curve the center of circle, with (7.5mm, 0mm) for end point, with (10mm, -2.5mm) for another end points, half
Footpath r4=2.5mm, makes angle of circumference and is 90 °, and direction is the circular arc protruding to x-axis and y-axis positive direction；With (13.75mm ,-
2.5mm) be the 5th curve the center of circle, with (10mm, -2.5mm) be end point, with H (15.45246mm, -5.84127mm) be
Another end points, radius r5=3.75mm, makes angle of circumference and is 117 °, and direction is the circular arc protruding to x-axis and y-axis negative direction, obtains
To initial graphics one, with straight line y=-x as axis of symmetry, initial graphics one are carried out minute surface symmetrically, obtains initial graphics two, line segment
HW, line segment LW, initial graphics one and initial graphics two merge and obtain rotating graphs one, by rotating graphs one with pointFor the point of rotation, clockwise successively 36 ° of rotation, 72 °, 108 °,
144 °, 180 °, 216 °, 252 °, 288 ° and 324 °, respectively obtain rotating graphs two, rotating graphs three, rotating graphs four, rotation
Figure five, rotating graphs six, rotating graphs seven, rotating graphs eight, rotating graphs nine and rotating graphs ten, rotating graphs one, rotation
Turn figure two, rotating graphs three, rotating graphs four, rotating graphs five, rotating graphs six, rotating graphs seven, rotating graphs eight, rotation
Turn figure nine and rotating graphs ten merging obtains closed figure, the circular coverage rate reduced radius of closed figure are original
0.38333 times of design shape obtaining required metal antenna paster 4 and size, obtain metal according to design shape and size cutting
Antenna patch 4；One end of described cylindrical metal conductor 5 is connected with metal antenna paster 4, the material of cylindrical metal conductor 5
For copper, its bottom surface radius r=0.5mm, thickness d=2.54mm, the junction of cylindrical metal conductor 5 and metal antenna paster 4
The center of circle is respectively 16.59mm, 16.59mm, 13.41mm and 13.41mm with the vertical dimension of 2 four sides of medium substrate, with circle
The aperture R=1.9mm of circular hole 6 on the relative earth plate of cylindricality metallic conductor 53, described cylindrical metal conductor 5 other end defeated
Outgoing interface is connected with energy management circuit, and this energy management circuit is used for being stored the energy absorbing.
Fig. 3 is the return loss plot of ten jiaos of WiFi collection of energy antennas using the simulation of HFSS antenna modeling simulation software,
As seen from the figure, the return loss of this ten jiaos of WiFi collection of energy antennas is -32dB, than the return loss of other same volume antennas
Also little, performance is very good.
Fig. 4 is ten jiaos of WiFi collection of energy antenna feed impedance figures using the simulation of HFSS antenna modeling simulation software, by
Figure understands, this ten jiaos of WiFi collection of energy antennas are 52.2 Ω in the input impedance of 2.45GHz, side closely normal impedance 50
Ω.
Embodiment above describes ultimate principle, principal character and the advantage of the present invention, the technical staff of the industry should
Understand, the present invention is not restricted to the described embodiments, the simply explanation present invention's described in above-described embodiment and description is former
Reason, under the scope without departing from the principle of the invention, the present invention also has various changes and modifications, and these changes and improvements each fall within
In the scope of protection of the invention.
Claims (1)
1. ten jiaos of WiFi collection of energy antennas are it is characterised in that include consistent size and dielectric overlay bonded to each other from top to bottom
Layer, medium substrate and earth plate, the medium substrate of side of wherein fitting with dielectric passivation is pasted with metal antenna paster, is situated between
The middle part of matter substrate is provided with the cylindrical metal conductor extending vertically through medium substrate, and earth plate is provided with and cylindrical metal conductor
The concentric circular hole in bottom surface；The material of described dielectric passivation is Rogers RO6002, DIELECTRIC CONSTANT εr=2.94, thickness d=
0.51mm, length and width is 30mm；The radius of the circular coverage rate of described metal antenna paster is 0.11311 λ, wherein λ
=122mm, λ are the wavelength of 2.45GHz radio frequency, and thickness is 0.02mm, and material is copper, and the material of described medium substrate is Rogers
RO6010, DIELECTRIC CONSTANT εr=10.2, thickness d=2.54mm, length and width is 30mm, the central point of metal antenna paster
Consistent with the center position of medium substrate upper surface；The design shape of described metal antenna paster and size meet following wanting
Ask, set up plane right-angle coordinate, by (0mm, -2.5mm) as starting point, (13.75mm, -2.5mm) is another end points along x-axis
Positive direction makes the line segment one of an a length of 13.75mm, with point (13.75mm, -2.5mm) for the point of rotation, by line segment one along the inverse time
Pin direction rotates 117 °, with curvilinear equationIntersection point be H (15.45246mm ,-
5.84127mm), minute surface is made for axis of symmetry with straight line y=-x and symmetrically obtain point L (5.84127mm, -15.45246mm), more along the line
Duan Yiyu x-axis angle is 63 ° of direction, extends to original 2 times in coordinate axess the 4th interval, is extended line segment two, will
Prolongation line segment two is made minute surface with straight line y=-x for axis of symmetry and is symmetrically extended line segment three, extends line segment two and extends line segment three
Intersection point beDifference junction point H (15.45246mm ,-
5.84127mm)、With L (5.84127mm, -15.45246mm),Obtain line segment HW and line segment LW, again by initial point (0mm, 0mm)
As starting point, make the line segment of an a length of 2.5mm along x-axis positive direction, the circle being first curve with (2.5mm, -1.25mm)
The heart, with (2.5mm, 0mm) for end point, with (3.75mm, -1.25mm) for another end points, radius r1=1.25mm, makes circumference
Angle is 90 °, and direction is the circular arc protruding to x-axis and y-axis positive direction, the center of circle being second curve with (5mm, -1.25mm), with
(3.75mm, -1.25mm) is end point, with (6.25mm, -1.25mm) for another end points, radius r2=1.25mm, makes circumference
Angle is 180 °, and direction is the circular arc protruding to y-axis negative direction, the center of circle being then the 3rd curve with (7.5mm, -1.25mm),
With (6.25mm, -1.25mm) for end point, with (7.5mm, 0mm) for another end points, radius r3=1.25mm, makes angle of circumference
For 90 °, direction is the circular arc protruding to x-axis negative direction and y-axis positive direction, the circle being the 4th curve with (7.5mm, -2.5mm)
The heart, with (7.5mm, 0mm) for end point, with (10mm, -2.5mm) for another end points, radius r4=2.5mm, making angle of circumference is
90 °, direction is the circular arc protruding to x-axis and y-axis positive direction；The center of circle being the 5th curve with (13.75mm, -2.5mm), with
(10mm, -2.5mm) is end point, with H (15.45246mm, -5.84127mm) for another end points, radius r5=3.75mm, makees
Go out angle of circumference and be 117 °, direction is the circular arc protruding to x-axis and y-axis negative direction, obtains initial graphics one, with straight line y=-x is
Axis of symmetry, initial graphics one is carried out minute surface symmetrical, obtains initial graphics two, line segment HW, line segment LW, initial graphics one and initial
Figure two merges and obtains rotating graphs one, by rotating graphs one with point
For the point of rotation, rotate 36 °, 72 °, 108 °, 144 °, 180 °, 216 °, 252 °, 288 ° and 324 ° successively clockwise, respectively obtain rotation
Turn figure two, rotating graphs three, rotating graphs four, rotating graphs five, rotating graphs six, rotating graphs seven, rotating graphs eight, rotation
Turn figure nine and rotating graphs ten, rotating graphs one, rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five,
Rotating graphs six, rotating graphs seven, rotating graphs eight, rotating graphs nine and rotating graphs ten merge and obtain closed figure, will seal
The circular coverage rate reduced radius closing figure are design shape and the chi that original 0.38333 times obtains required metal antenna paster
Very little, obtain metal antenna paster according to design shape and size cutting；One end of described cylindrical metal conductor and metal antenna
Paster connects, and the material of cylindrical metal conductor is copper, its bottom surface radius r=0.5mm, thickness d=2.54mm, cylindrical metal
The junction center of circle of conductor and metal antenna paster and the vertical dimension of four sides of medium substrate respectively 16.59mm,
16.59mm, 13.41mm and 13.41mm, the aperture R=1.9mm of circular hole, institute on the earth plate relative with cylindrical metal conductor
The output interface stating the cylindrical metal conductor other end is connected with energy management circuit, and this energy management circuit is used for absorbing
Energy stored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610815838.5A CN106410390A (en) | 2016-09-11 | 2016-09-11 | Ten-corner WiFi energy collecting antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610815838.5A CN106410390A (en) | 2016-09-11 | 2016-09-11 | Ten-corner WiFi energy collecting antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106410390A true CN106410390A (en) | 2017-02-15 |
Family
ID=57999641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610815838.5A Withdrawn CN106410390A (en) | 2016-09-11 | 2016-09-11 | Ten-corner WiFi energy collecting antenna |
Country Status (1)
| Country | Link |
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| CN (1) | CN106410390A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5574470A (en) * | 1994-09-30 | 1996-11-12 | Palomar Technologies Corporation | Radio frequency identification transponder apparatus and method |
| CN105932409A (en) * | 2016-05-05 | 2016-09-07 | 哈尔滨工程大学 | Miniaturized inverted-E-shaped groove type ultra wide band millimeter wave microstrip antenna |
-
2016
- 2016-09-11 CN CN201610815838.5A patent/CN106410390A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5574470A (en) * | 1994-09-30 | 1996-11-12 | Palomar Technologies Corporation | Radio frequency identification transponder apparatus and method |
| CN105932409A (en) * | 2016-05-05 | 2016-09-07 | 哈尔滨工程大学 | Miniaturized inverted-E-shaped groove type ultra wide band millimeter wave microstrip antenna |
Non-Patent Citations (2)
| Title |
|---|
| WENKUAN CHEN ETC.: "A new design of tri-frequency microstrip antenna with arc slots", 《2012 INTERNATIONAL CONFERENCE ON MICROWAVE AND MILLIMETER WAVE TECHNOLOGY (ICMMT)》 * |
| 郭蓉 等: "一种新型宽带定向性贴片天线设计", 《物理学报》 * |
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Application publication date: 20170215 |