CN106374205A - Nine-angle microstrip antenna capable of eliminating loss - Google Patents
Nine-angle microstrip antenna capable of eliminating loss Download PDFInfo
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- CN106374205A CN106374205A CN201610816514.3A CN201610816514A CN106374205A CN 106374205 A CN106374205 A CN 106374205A CN 201610816514 A CN201610816514 A CN 201610816514A CN 106374205 A CN106374205 A CN 106374205A
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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
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Abstract
The invention discloses a nine-angle microstrip antenna capable of eliminating loss. The nine-angle microstrip antenna comprises a dielectric coverage layer, a dielectric substrate and a grounding plate which are consistent in size from top to bottom and are attached to one another, wherein a metal antenna patch is attached onto one side of the dielectric substrate which is attached to the dielectric coverage layer, a cylindrical metal conductor is arranged in the middle part of the dielectric substrate and vertically penetrates through the dielectric substrate, and a round hole is formed in the grounding plate and is concentric with a bottom surface of the cylindrical metal conductor. The nine-angle microstrip antenna has lower return loss, good impedance matching and standing-wave ratio and relatively high gain, so that radio frequency energy in an environment can be efficiently received.
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
Eliminate loss nine jiaos of microstrip antennas.
Background technology
Wireless sensor network is with a wide range of applications, and is related to industry, agricultural, the hydrology, military and biomedical etc.
Every field.Currently, battery remains the main energy sources of wireless sensor network, but the life-span of battery, size and
Maintenance and renewal cost etc., are insupportable in some occasions, and are aided with using ambient radio-frequency energy collection technique chargeable
Battery is then its more satisfactory power supply mode.
Content of the invention
Present invention solves the technical problem that nine jiaos that there is provided a kind of elimination loss simple and reasonable in design of structure micro-
Band antenna, the less size having for the more other antenna of this antenna, the loss of relatively low clawback, good impedance matching
Higher gain.
The present invention is to solve above-mentioned technical problem to adopt the following technical scheme that, eliminate nine jiaos of microstrip antennas of loss, it is special
Levy and be including consistent size from top to bottom and dielectric passivation bonded to each other, medium substrate and earth plate, wherein with medium
It is pasted with metal antenna paster, the middle part of medium substrate is provided with and extends vertically through medium base on the medium substrate of cover layer laminating side
The cylindrical metal conductor of plate, earth plate is provided with the circular hole concentric with cylindrical metal conductor bottom surface;Described dielectric passivation
Material be rogers ro6002, DIELECTRIC CONSTANT εr=2.94, thickness d=0.51mm, length and width is 30mm;Described
The radius of the circular coverage rate of metal antenna paster is 0.10623 λ, and wherein λ=122mm, λ are the wavelength of 2.45ghz radio frequency, thick
Spend for 0.02mm, material is copper, 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 of the central point of metal antenna paster and medium substrate upper surface
Unanimously;The design shape of described metal antenna paster and size meet following requirement, set up plane right-angle coordinate, by initial point
(0mm, 0mm), as starting point, makes the line segment one of an a length of 18mm along x-axis positive direction, by line segment one with point (18mm, 0mm)
Obtain line segment two, then the direction being 50 ° along line segment two and x-axis angle as 130 ° of point of rotation rotate counterclockwise, in coordinate axess the
Extend to original 2 times in four intervals, be extended line segment two with straight lineMake minute surface for axis of symmetry symmetrically to be prolonged
Long line segment three, extends line segment two and the intersection point of prolongation line segment three isThis point
Straight lineOn, line segment two will be extended and extend the intersecting lens of line segment three in straight lineThe shorter line segment in both sides
Part is left out respectively, 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,
The center of circle being first curve with b (2.5mm, -1.25mm), with a (2.5mm, 0mm) for end point, with b1(3.75mm ,-
It is 1.25mm) another end points, radius r1=1.25mm, makes angle of circumference and is 90 °, and direction is to protrude to x-axis and y-axis positive direction
Circular arc, the center of circle being second curve with c (4.0625mm, -1.25mm), with b1(3.75mm, -1.25mm) is end point, with c1
(4.375mm, -1.25mm) is another end points, radius r2=0.3125mm, makes angle of circumference and is 180 °, direction is along y-axis losing side
To the circular arc protruding, the center of circle being the 3rd curve with d (4.6875mm, -1.25mm), with c1(4.375mm, -1.25mm) is
End point, with d1(5mm, -1.25mm) is another end points, radius r3=0.3125mm, makes angle of circumference and is 180 °, direction is along y
The circular arc that axle positive direction is protruded, the center of circle being the 4th curve with e (5.625mm, -1.25mm), with d1(5mm, -1.25mm) is
End point, with e1(6.25mm, -1.25mm) is another end points, radius r4=0.625mm, makes angle of circumference and is 180 °, direction is
The circular arc protruding along y-axis negative direction, the center of circle being the 5th curve with f (7.5mm, -1.25mm), with e1(6.25mm ,-
It is 1.25mm) end point, with f1(7.5mm, 0mm) is another end points, radius r5=1.25mm, makes angle of circumference and is 90 °, direction
It is the circular arc protruding to x-axis negative direction and y-axis positive direction, the center of circle being the 6th curve with g (7.5mm, -2.5mm), with f1
(7.5mm, 0mm) is end point, with g1(10mm, -2.5mm) is another end points, radius r6=2.5mm, makes angle of circumference and is 90 °,
Direction is the circular arc protruding to x-axis and y-axis positive direction, and the center of circle being the 7th curve with h (11.875mm, -2.5mm), with g1
(10mm, -2.5mm) is end point, with h1(13.75mm, -2.5mm) is another end points, radius r7=1.875mm, makes circumference
Angle is 180 °, and direction is the circular arc protruding to y-axis negative direction, the center of circle being the 8th curve with i (16.25mm, -2.5mm), with
h1(13.75mm, -2.5mm) is end point, with i1(16.25mm, 0mm) is another end points, radius r8=2.5mm, makes circumference
Angle is 90 °, and direction is the circular arc protruding to x-axis negative direction and y-axis positive direction, with i1(16.25mm, 0mm) is end point, b (18mm,
0mm) it is another end points, make the line segment that a length is 1.75mm, obtain initial graphics one in x-axis and y-axis plane, by initial graphics
One with straight lineMake minute surface for axis of symmetry and symmetrically obtain initial graphics two, initial graphics one, initial graphics two, extended line
Section two and prolongation line segment three merging obtain rotating graphs one, by rotating graphs one with point
For the point of rotation, rotate 40 °, 80 °, 120 °, 160 °, 200 °, 240 °, 280 ° and 320 ° successively clockwise, respectively obtain rotation figure
Shape two, rotating graphs three, rotating graphs four, rotating graphs five, rotating graphs six, rotating graphs seven, rotating graphs eight and rotation
Figure nine, rotating graphs one, rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five, rotating graphs six, rotation
Figure seven, rotating graphs eight and rotating graphs nine merge and obtain closed figure, by the radius contracting of the circular coverage rate of closed figure
Little to the original 0.32146 times design shape obtaining required metal antenna paster and size, cut out according to design shape and size
Cut and obtain metal antenna paster;One end of described cylindrical metal conductor is connected with metal antenna paster, cylindrical metal conductor
Material be copper, its bottom surface radius r=0.5mm, thickness d=2.54mm, the company of cylindrical metal conductor and metal antenna paster
The vertical dimension connecing the place center of circle with four sides of medium substrate is respectively 16.62mm, 16.62mm, 13.38mm and 13.38mm, with
The aperture r=1.9mm of circular hole on the relative earth plate of cylindrical metal conductor, the output of the described cylindrical metal conductor other end
Interface is connected with energy management circuit, and this energy management circuit is used for being stored the energy absorbing.
The technique effect of the present invention is: nine jiaos of microstrip antennas eliminating loss have lower return loss, good resistance
Anti- coupling and standing-wave ratio and higher gain are such that it is able to radio-frequency (RF) energy in efficient reception environment.
Brief description
Fig. 1 is the structural representation of metal antenna paster;
Fig. 2 is nine jiaos of microstrip antenna structure schematic diagrams eliminating loss;
Fig. 3 is the return loss of the nine jiaos of microstrip antennas eliminating loss using the simulation of hfss antenna modeling simulation software
Figure;
Fig. 4 is the gain diagram of the nine jiaos of microstrip antennas eliminating loss using the simulation of hfss antenna modeling simulation software.
In figure: 1, 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 nine jiaos of microstrip antenna designs eliminating loss, needs in microstrip antenna designs to offset
Except the size of the metal antenna paster of nine jiaos of microstrip antennas of loss, the size of medium substrate, thickness carry out theoretic estimation,
Nine jiaos of microstrip antennas eliminating loss of suitable characteristic frequency more quickly could be accurately found when simulation experiment.Institute
By following 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 △ 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, nine jiaos of microstrip antennas of loss are eliminated, including consistent size from top to bottom and Jie bonded to each other
Matter 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
Antenna patch 4, the middle part of medium substrate 2 is provided with the cylindrical metal conductor 5 extending vertically through medium substrate 2, and earth plate 3 is provided with
The circular hole 6 concentric with cylindrical metal conductor 5 bottom surface;The material of described dielectric passivation 1 is rogers ro6002, and dielectric is normal
Number εr=2.94, thickness d=0.51mm, length and width is 30mm;The half of the circular coverage rate of described metal antenna paster 4
Footpath is 0.10623 λ, and wherein λ=122mm, λ are the wavelength of 2.45ghz radio frequency, and thickness is 0.02mm, and material is copper, described medium
The material of substrate 2 is rogers ro6010, DIELECTRIC CONSTANT εr=10.2, thickness d=2.54mm, length and width is 30mm,
The central point of metal antenna paster 4 is consistent with the center position of medium substrate upper surface;The design of described metal antenna paster 4
Shape and size meet following requirement, set up plane right-angle coordinate, by initial point (0mm, 0mm) as starting point, along x-axis positive direction
Make the line segment one of an a length of 18mm, line segment one is obtained line with point (18mm, 0mm) for 130 ° as point of rotation rotate counterclockwise
Section two, then the direction being 50 ° along line segment two and x-axis angle, extend to original 2 times in coordinate axess the 4th interval, are prolonged
Long line segment two is with straight lineMake minute surface for axis of symmetry and be symmetrically extended line segment three, extend line segment two and extend line segment
Three intersection point isThis point is in straight lineOn, line segment two He will be extended
The intersecting lens extending line segment three is in straight lineThe shorter line segment part in both sides is left out respectively, 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, with b (2.5mm, -1.25mm) for first song
The center of circle of line, with a (2.5mm, 0mm) for end point, with b1(3.75mm, -1.25mm) is another end points, radius r1=1.25mm,
Make angle of circumference and be 90 °, direction is the circular arc protruding to x-axis and y-axis positive direction, with c (4.0625mm, -1.25mm) for second
The center of circle of individual curve, with b1(3.75mm, -1.25mm) is end point, with c1(4.375mm, -1.25mm) is another end points, radius
r2=0.3125mm, make angle of circumference be 180 °, direction be along y-axis negative direction protrude circular arc, with d (4.6875mm ,-
1.25mm) be the 3rd curve the center of circle, with c1(4.375mm, -1.25mm) is end point, with d1(5mm, -1.25mm) is another
End point, radius r3=0.3125mm, makes angle of circumference and is 180 °, direction is the circular arc protruding along y-axis positive direction, with e
(5.625mm, -1.25mm) is the center of circle of the 4th curve, with d1(5mm, -1.25mm) is end point, with e1(6.25mm ,-
It is 1.25mm) another end points, radius r4=0.625mm, makes angle of circumference and is 180 °, and direction is the circle protruding along y-axis negative direction
Arc, the center of circle being the 5th curve with f (7.5mm, -1.25mm), with e1(6.25mm, -1.25mm) is end point, with f1
(7.5mm, 0mm) is another end points, radius r5=1.25mm, makes angle of circumference and is 90 °, and direction to x-axis negative direction and y-axis is just
The circular arc that direction is protruded, the center of circle being the 6th curve with g (7.5mm, -2.5mm), with f1(7.5mm, 0mm) is end point, with
g1(10mm, -2.5mm) is another end points, radius r6=2.5mm, makes angle of circumference and is 90 °, direction is to x-axis and y-axis positive direction
The circular arc protruding, the center of circle being the 7th curve with h (11.875mm, -2.5mm), with g1(10mm, -2.5mm) is end point,
With h1(13.75mm, -2.5mm) is another end points, radius r7=1.875mm, makes angle of circumference and is 180 °, and direction is to bear to y-axis
The circular arc that direction is protruded, the center of circle being the 8th curve with i (16.25mm, -2.5mm), with h1(13.75mm, -2.5mm) is one
End points, with i1(16.25mm, 0mm) is another end points, radius r8=2.5mm, makes angle of circumference and is 90 °, direction is to x-axis losing side
To and y-axis positive direction protrude circular arc, with i1(16.25mm, 0mm) is end point, and b (18mm, 0mm) is another end points, makees one
Length is the line segment of 1.75mm, obtains initial graphics one, by initial graphics one with straight line in x-axis and y-axis plane
Make minute surface for axis of symmetry and symmetrically obtain initial graphics two, initial graphics one, initial graphics two, prolongation line segment two and prolongation line segment three
Merge and obtain rotating graphs one, by rotating graphs one with pointFor the point of rotation, suitable
Hour hands rotate 40 °, 80 °, 120 °, 160 °, 200 °, 240 °, 280 ° and 320 ° successively, respectively obtain rotating graphs two, rotation figure
Shape three, rotating graphs four, rotating graphs five, rotating graphs six, rotating graphs seven, rotating graphs eight and rotating graphs nine, rotation
Figure one, rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five, rotating graphs six, rotating graphs seven, rotation
Figure eight and rotating graphs nine merge and obtain closed figure, by the reduced radius of the circular coverage rate of closed figure to original
0.32146 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 16.62mm, 16.62mm, 13.38mm and 13.38mm 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 of the nine jiaos of microstrip antennas eliminating loss using the simulation of hfss antenna modeling simulation software
Figure, as seen from the figure, the return loss of nine jiaos of microstrip antennas of this elimination loss is -38db, returning than other same volume antennas
Ripple loss is also little, and performance is very good.
Fig. 4 is nine jiaos of microstrip antennas of the elimination loss using the simulation of hfss antenna modeling simulation software in xz plane
Gain diagram, as seen from the figure, nine jiaos of microstrip antennas of this elimination loss are 3.41db in the maximum gain of 2.45ghz, and directivity is non-
Normal stablizes.
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. eliminate nine jiaos of microstrip antennas of loss it is characterised in that including consistent size and medium bonded to each other covers from top to bottom
Cap rock, medium substrate and earth plate, the medium substrate of side of wherein fitting with dielectric passivation is pasted with metal antenna paster,
The middle part of medium substrate is provided with the cylindrical metal conductor extending vertically through medium substrate, and earth plate is provided with is led with cylindrical metal
The concentric circular hole in body 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 0.10623 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 initial point (0mm, 0mm) as starting point, make the line of an a length of 18mm along x-axis positive direction
Duan Yi, line segment one is obtained line segment two with point (18mm, 0mm) for 130 ° as point of rotation rotate counterclockwise, then along line segment two and x-axis
Angle is 50 ° of direction, extends to original 2 times in coordinate axess the 4th interval, is extended line segment two with straight lineMake minute surface for axis of symmetry and be symmetrically extended line segment three, extend line segment two and the intersection point of prolongation line segment three isThis point is in straight lineOn, line segment two will be extended and extend line segment three
Intersecting lens in straight lineThe shorter line segment part in both sides is left out respectively, plays initial point (0mm, 0mm) conduct again
Point, makes the line segment of an a length of 2.5mm along x-axis positive direction, the center of circle being first curve with b (2.5mm, -1.25mm), with
A (2.5mm, 0mm) is end point, with b1(3.75mm, -1.25mm) is another end points, radius r1=1.25mm, makes angle of circumference
For 90 °, direction is the circular arc protruding to x-axis and y-axis positive direction, the circle being second curve with c (4.0625mm, -1.25mm)
The heart, with b1(3.75mm, -1.25mm) is end point, with c1(4.375mm, -1.25mm) is another end points, radius r2=
0.3125mm, makes angle of circumference and is 180 °, direction is the circular arc protruding along y-axis negative direction, with d (4.6875mm, -1.25mm) is
The center of circle of the 3rd curve, with c1(4.375mm, -1.25mm) is end point, with d1(5mm, -1.25mm) is another end points, half
Footpath r3=0.3125mm, make angle of circumference be 180 °, direction be along y-axis positive direction protrude circular arc, with e (5.625mm ,-
1.25mm) be the 4th curve the center of circle, with d1(5mm, -1.25mm) is end point, with e1(6.25mm, -1.25mm) is another
End points, radius r4=0.625mm, make angle of circumference be 180 °, direction be along y-axis negative direction protrude circular arc, with f (7.5mm ,-
1.25mm) be the 5th curve the center of circle, with e1(6.25mm, -1.25mm) is end point, with f1(7.5mm, 0mm) is the other end
Point, radius r5=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 g
(7.5mm, -2.5mm) is the center of circle of the 6th curve, with f1(7.5mm, 0mm) is end point, with g1(10mm, -2.5mm) is another
End point, radius r6=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 h
(11.875mm, -2.5mm) is the center of circle of the 7th curve, with g1(10mm, -2.5mm) is end point, with h1(13.75mm ,-
It is 2.5mm) another end points, radius r7=1.875mm, makes angle of circumference and is 180 °, and direction is the circle protruding to y-axis negative direction
Arc, the center of circle being the 8th curve with i (16.25mm, -2.5mm), with h1(13.75mm, -2.5mm) is end point, with i1
(16.25mm, 0mm) is another end points, radius r8=2.5mm, makes angle of circumference and is 90 °, direction is to x-axis negative direction and y-axis
The circular arc that positive direction is protruded, with i1(16.25mm, 0mm) is end point, and b (18mm, 0mm) is another end points, makees a length and is
The line segment of 1.75mm, obtains initial graphics one, by initial graphics one with straight line in x-axis and y-axis planeFor symmetrical
Axle is made minute surface and is symmetrically obtained initial graphics two, and initial graphics one, initial graphics two, prolongation line segment two and prolongation line segment three merge
To rotating graphs one, by rotating graphs one with pointFor the point of rotation, clockwise according to
Secondary rotation 40 °, 80 °, 120 °, 160 °, 200 °, 240 °, 280 ° and 320 °, respectively obtain rotating graphs two, rotating graphs three, rotation
Turn figure four, rotating graphs five, rotating graphs six, rotating graphs seven, rotating graphs eight and rotating graphs nine, rotating graphs one,
Rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five, rotating graphs six, rotating graphs seven, rotating graphs eight
Merge with rotating graphs nine and obtain closed figure, by the reduced radius of the circular coverage rate of closed figure to original 0.32146
Obtain design shape and the size of required metal antenna paster again, obtain metal antenna patch according to design shape and size cutting
Piece;One end of described cylindrical metal conductor is connected with metal antenna paster, and the material of cylindrical metal conductor is copper, its bottom surface
The junction center of circle of radius r=0.5mm, thickness d=2.54mm, cylindrical metal conductor and metal antenna paster and medium substrate
Article four, the vertical dimension of side is respectively 16.62mm, 16.62mm, 13.38mm and 13.38mm, relative with cylindrical metal conductor
Earth plate on circular hole aperture r=1.9mm, the output interface of the described cylindrical metal conductor other end and energy management circuit
It is connected, this energy management circuit is used for being stored the energy absorbing.
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CN201610816514.3A CN106374205A (en) | 2016-09-11 | 2016-09-11 | Nine-angle microstrip antenna capable of eliminating loss |
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Application Number | Priority Date | Filing Date | Title |
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CN201610816514.3A CN106374205A (en) | 2016-09-11 | 2016-09-11 | Nine-angle microstrip antenna capable of eliminating loss |
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CN106374205A true CN106374205A (en) | 2017-02-01 |
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ID=57900563
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Application publication date: 20170201 |