CN106252866A - Ten jiaos of radio-frequency (RF) energy absorption-type antennas such as not - Google Patents

Abstract

The invention discloses a kind of ten jiaos of radio-frequency (RF) energy absorption-type antennas such as not, including consistent size from top to bottom and dielectric passivation bonded to each other, medium substrate and earth plate, wherein it is pasted with metal antenna paster with on the medium substrate of dielectric passivation laminating side, the middle part of medium substrate is provided with the cylindrical metal conductor extending vertically through medium substrate, and earth plate is provided 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 such that it is able to the radio-frequency (RF) energy in efficient reception environment.

Description

Ten jiaos of radio-frequency (RF) energy absorption-type antennas such as not

Technical field

The invention belongs to electromagnetic energy reception antenna technical field, be specifically related to a kind of for receiving radio-frequency (RF) energy in environment Ten jiaos of radio-frequency (RF) energy absorption-type antennas such as not.

Background technology

In intelligent building, each portion that the sensor node that each building is the most up to a hundred is distributed in building body Position, is used for monitoring the parameters such as temperature, brightness and flow of the people；Thering is provided power supply by wiring for these sensor nodes, its cost is Sufficiently expensive, and use battery main problems faced of powering is the most how to judge that the battery of which node has exhausted to go forward side by side Row is changed, and this is commercially difficult to accept, and using ambient radio-frequency energy collection technique to be aided with rechargeable battery is then its ratio Comparatively ideal power supply mode.

Summary of the invention

Present invention solves the technical problem that and there is provided a kind of simple in construction and the reasonable in design ten jiaos radio-frequency (RF) energy such as not Absorption-type antenna, this antenna is compared with the less size having for other antenna, the loss of relatively low clawback, good impedance Coupling and higher gain.

The present invention solves that above-mentioned technical problem adopts the following technical scheme that, ten jiaos of radio-frequency (RF) energy absorption-type antennas such as not, It is characterized in that including consistent size and dielectric passivation bonded to each other, medium substrate and earth plate, Qi Zhongyu from top to bottom Being pasted with metal antenna paster on the medium substrate of dielectric passivation laminating side, the middle part of medium substrate is provided with and extends vertically through Jie The cylindrical metal conductor of matter substrate, earth plate is provided with the circular hole concentric with cylindrical metal conductor bottom surface；Described medium covers The material of cap rock is Rogers RO6002, DIELECTRIC CONSTANT ε_r=2.94, thickness d=0.51mm, length and width is 30mm； The radius of the circular coverage rate of described metal antenna paster is 0.1057377 λ, wherein λ=122mm, and λ is 2.45GHz radio frequency Wavelength, thickness is 0.02mm, and material is copper, and the material of described medium substrate is Rogers RO6010, DIELECTRIC CONSTANT ε_r= 10.2, thickness d=2.54mm, length and width is 30mm, the central point of metal antenna paster and medium substrate upper surface Center position is consistent；Design shape and the size of described metal antenna paster meet following requirement, set up plane rectangular coordinates System, by (0mm ,-2.5mm) as starting point, (13.75mm ,-2.5mm) be another end points along x-axis positive direction make one a length of The line segment one of 13.75mm, with point (13.75mm ,-2.5mm) for the point of rotation, rotates 117 ° in the counterclockwise direction by line segment one, with Curvilinear equationIntersection point be H (15.45246mm ,-5.84127mm), with straight line y=-x be Axis of symmetry is made minute surface symmetry and is obtained a L (5.84127mm ,-15.45246mm), then along the side that line segment one and x-axis angle are 63 ° To, in coordinate axes the 4th interval, extend to original 2 times, be extended line segment two, by prolongation line segment two with straight line y=-x be Axis of symmetry is made minute surface symmetry and is extended line segment three, and the intersection point extending line segment two and prolongation line segment three isDifference junction point H (15.45246mm ,-5.84127mm),With L (5.84127mm ,-15.45246mm),Obtain line segment HW and line segment LW, again initial point (0mm, 0mm) is made For starting point, make the line segment of an a length of 2.5mm along x-axis positive direction, with the circle that (2.5mm ,-1.25mm) is first curve The heart, with (2.5mm, 0mm) for end point, is another end points with (3.75mm ,-1.25mm), radius r₁=1.25mm, makes circumference Angle is 90 °, and direction is the circular arc protruded to x-axis and y-axis positive direction, with the center of circle that (5mm ,-1.25mm) is second curve, with (3.75mm ,-1.25mm) is end point, is another end points with (6.25mm ,-1.25mm), radius r₂=1.25mm, makes circumference Angle is 180 °, and direction is the circular arc protruded to y-axis negative direction, then with the center of circle that (7.5mm ,-1.25mm) is the 3rd curve, With (6.25mm ,-1.25mm) for end point, it is another end points with (7.5mm, 0mm), radius r₃=1.25mm, makes angle of circumference Being 90 °, direction is the circular arc protruded to x-axis negative direction and y-axis positive direction, with the circle that (7.5mm ,-2.5mm) is the 4th curve The heart, with (7.5mm, 0mm) for end point, is another end points with (10mm ,-2.5mm), radius r₄=2.5mm, making angle of circumference is 90 °, direction is the circular arc protruded to x-axis and y-axis positive direction；With the center of circle that (13.75mm ,-2.5mm) is the 5th curve, with (10mm ,-2.5mm) is end point, is another end points with H (15.45246mm ,-5.84127mm), radius r₅=3.75mm, makees Going out angle of circumference is 117 °, and direction is the circular arc protruded to x-axis and y-axis negative direction, obtains initial graphics one, with straight line y=-x is Axis of symmetry, it is symmetrical that initial graphics one carries out minute surface, obtains initial graphics two, line segment HW, line segment LW, initial graphics one and initial Figure two merging obtains rotating graphs one, by rotating graphs one with pointFor rotation Turning point, turns clockwise 36 ° and entirety is reduced into original 0.8 times, obtains rotating graphs two, by rotating graphs one with pointFor the point of rotation, turn clockwise 72 °, obtain rotating graphs three, by rotating graphs One with pointFor the point of rotation, turn clockwise 108 ° and entirety is reduced into originally 0.8 times, obtain rotating graphs four, by rotating graphs one with pointRotate Point, turns clockwise 144 °, obtains rotating graphs five, by rotating graphs one with pointFor The point of rotation, turns clockwise 180 ° and entirety is reduced into original 0.8 times, obtains rotating graphs six, by rotating graphs one with pointFor the point of rotation, turn clockwise 216 °, obtain rotating graphs seven, will rotation Turn figure one with pointFor the point of rotation, turn clockwise 252 ° and entirety is reduced into originally 0.8 times, obtain rotating graphs eight, by rotating graphs one with pointFor rotating Point, turns clockwise 288 °, obtains rotating graphs nine, by rotating graphs one with point For the point of rotation, turn clockwise 324 ° and entirety is reduced into original 0.8 times, obtain rotating graphs ten, rotating graphs one, rotate Figure two, rotating graphs three, rotating graphs four, rotating graphs five, rotating graphs six, rotating graphs seven, rotating graphs eight, rotation Figure nine and rotating graphs ten merging obtain closed figure, are original by the circular coverage rate reduced radius of closed figure 0.35833 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 center of circle, junction 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 16.58mm, 16.58mm, 13.42mm and 13.42mm, leads with cylindrical metal The aperture R=1.9mm of circular hole on the earth plate that body is relative, the output interface of the described cylindrical metal conductor other end and energy pipe Reason circuit is connected, and this energy management circuit is for storing the energy absorbed.

The technique effect of the present invention is: ten jiaos not etc. radio-frequency (RF) energy absorption-type antenna there is lower return loss, good Impedance matching and standing-wave ratio and higher gain such that it is able to the radio-frequency (RF) energy in efficient reception environment.

Accompanying drawing explanation

Fig. 1 is the structural representation of metal antenna paster；

Fig. 2 is ten jiaos of radio-frequency (RF) energy absorption-type antenna structure views such as not；

Fig. 3 is that the echo utilizing ten jiaos of the simulation of the HFSS antenna modeling simulation software radio-frequency (RF) energy absorption-type antennas such as not damages Consumption figure；

Fig. 4 be utilize ten jiaos of the simulation of HFSS antenna modeling simulation software not etc. radio-frequency (RF) energy absorption-type antenna in standing-wave ratio Figure.

In figure: 1, dielectric passivation, 2, medium substrate, 3, earth plate, 4, metal antenna paster, 5, cylindrical metal leads Body, 6, circular hole.

Detailed description of the invention

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, concrete description.

Core of this invention is ten jiaos of radio-frequency (RF) energy absorption-type Antenna Design such as not, needs when microstrip antenna designs Size to ten jiaos of metal antenna pasters of radio-frequency (RF) energy absorption-type antenna such as not, the size of medium substrate, thickness carry out theory On estimation, simulation experiment when, more quickly could find ten jiaos of the applicable characteristic frequency radio-frequency (RF) energy such as not accurately Absorption-type antenna.So below as a example by rectangular microstrip antenna, the theoretical calculation method of explanation each data parameters of microstrip antenna.

Patch size L × W, patch width W be:

$W=\frac{c}{2f_0}{\left(\frac{{\mathrm{\ϵ}}_r+1}{2}\right)}^{-\frac{1}{2}}---\left(1\right)$

In (1) formula, c is the light velocity, f₀For forbidden band mid frequency, ε_rFor relative dielectric constant.

The relative efficiency DIELECTRIC CONSTANT ε of microstrip antenna medium substrate_reFor:

${\mathrm{\ϵ}}_{re}=\frac{{\mathrm{\ϵ}}_r+1}{2}+\frac{{\mathrm{\ϵ}}_r-1}{2}{(1+\frac{12h}{W})}^{-\frac{1}{2}}---\left(2\right)$

H represents thickness of dielectric layers, and in order to reduce the surface wave impact on antenna performance, the thickness of dielectric substrate should Satisfied theoretical calculation formula once:

$h\≤\frac{0.3c}{2{\mathrm{\πf}}_u\sqrt{{\mathrm{\ϵ}}_r}}---\left(3\right)$

Wherein f_uHighest frequency for the work of microstrip antenna.

The equivalent radiated power gap length △ L of microstrip antenna is:

$\mathrm{\Δ}L=0.412h\frac{({\mathrm{\ϵ}}_{re}+0.3)(W/h+0.264)}{({\mathrm{\ϵ}}_{re}-0.258)(W/h+0.8)}---\left(4\right)$

Then length L of microstrip antenna paster is:

$L=\frac{c}{2f_0}\frac{1}{\sqrt{{\mathrm{\ϵ}}_{re}}}-2\mathrm{\Δ}L---\left(5\right)$

Size L of earth plate_g×W_gMeet following theoretical formula

L_g≥L+6h (6)

W_g≥W+6h (7)

Rectangular microstrip antenna is that coaxial line feeds, when after the length and width determining rectangular patch, typically The normal impedance of 50 Ω is added in microstrip antenna.

As shown in Figure 1-2, ten jiaos of radio-frequency (RF) energy absorption-type antennas such as not, including consistent size from top to bottom and bonded to each other Dielectric passivation 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 paster 4, the middle part of medium substrate 2 is provided with the cylindrical metal conductor 5 extending vertically through medium substrate 2, on earth plate 3 It 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, is situated between Electric constant ε_r=2.94, thickness d=0.51mm, length and width is 30mm；The circular coverage rate of described metal antenna paster 4 Radius be 0.1057377 λ, wherein λ=122mm, λ is the wavelength of 2.45GHz radio frequency, and thickness is 0.02mm, and material is copper, institute The material stating medium substrate 2 is Rogers RO6010, DIELECTRIC CONSTANT ε_r=10.2, thickness d=2.54mm, length and width is equal For 30mm, the central point of metal antenna paster 4 is consistent with the center position on 2 surfaces on medium substrate；Described metal antenna pastes The design shape of sheet 4 and size meet following requirement, set up plane right-angle coordinate, by (0mm ,-2.5mm) as starting point, (13.75mm ,-2.5mm) is 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) is the point of rotation, in the counterclockwise direction line segment one is rotated 117 °, with curvilinear equationIntersection point be H (15.45246mm ,-5.84127mm), make minute surface with straight line y=-x for axis of symmetry Symmetry obtains a L (5.84127mm ,-15.45246mm), then along the direction that line segment one and x-axis angle are 63 °, at coordinate axes the Extend to original 2 times in four intervals, be extended line segment two, prolongation line segment two is made minute surface with straight line y=-x for axis of symmetry Symmetry is extended line segment three, and the intersection point extending line segment two and 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 segment 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) it is the center of circle of first curve, with (2.5mm, 0mm) for end point, is another end points with (3.75mm ,-1.25mm), Radius r₁=1.25mm, making angle of circumference is 90 °, and direction is the circular arc protruded to x-axis and y-axis positive direction, with (5mm ,- 1.25mm) it 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, making angle of circumference is 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, making angle of circumference is 90 °, and direction is the circle protruded to x-axis negative direction and y-axis positive direction Arc, with the center of circle that (7.5mm ,-2.5mm) is the 4th curve, with (7.5mm, 0mm) for end point, with (10mm ,-2.5mm) be Another end points, radius r₄=2.5mm, making angle of circumference is 90 °, and direction is the circular arc protruded 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) for end point, with H (15.45246mm ,- 5.84127mm) it is another end points, radius r₅=3.75mm, making angle of circumference is 117 °, and direction is convex to x-axis and y-axis negative direction The circular arc gone out, obtains initial graphics one, with straight line y=-x as axis of symmetry, initial graphics one carries out minute surface symmetry, 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, turn clockwise 36 ° and entirety is reduced into original 0.8 times, To rotating graphs two, by rotating graphs one with pointFor the point of rotation, clockwise Rotate 72 °, obtain rotating graphs three, by rotating graphs one with pointFor The point of rotation, turns clockwise 108 ° and entirety is reduced into original 0.8 times, obtains rotating graphs four, by rotating graphs one with pointFor the point of rotation, turn clockwise 144 °, obtain rotating graphs five, will Rotating graphs one is with pointFor the point of rotation, turn clockwise 180 ° and entirety is reduced into former 0.8 times come, obtains rotating graphs six, by rotating graphs one with pointFor the point of rotation, Turn clockwise 216 °, obtain rotating graphs seven, by rotating graphs one with pointFor The point of rotation, turns clockwise 252 ° and entirety is reduced into original 0.8 times, obtains rotating graphs eight, by rotating graphs one with pointFor the point of rotation, turn clockwise 288 °, obtain rotating graphs nine, will Rotating graphs one is with pointFor the point of rotation, turn clockwise 324 ° and whole Body is reduced into original 0.8 times, obtains 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 merging obtain Closed figure, is that original 0.35833 times obtains required metal antenna paster 4 by the circular coverage rate reduced radius of closed figure Design shape and size, obtain metal antenna paster 4 according to design shape and size cutting；Described cylindrical metal conductor 5 One end be connected with metal antenna paster 4, the material of cylindrical metal conductor 5 is copper, its bottom surface radius r=0.5mm, thickness d =2.54mm, 2 four sides of cylindrical metal conductor 5 and the center of circle, junction of metal antenna paster 4 and medium substrate vertical Distance respectively 16.58mm, 16.58mm, 13.42mm and 13.42mm, circle on the earth plate 3 relative with cylindrical metal conductor 5 The aperture R=1.9mm in hole 6, the output interface of described cylindrical metal conductor 5 other end is connected with energy management circuit, this energy Buret reason circuit is for storing the energy absorbed.

Fig. 3 is that the echo utilizing ten jiaos of the simulation of the HFSS antenna modeling simulation software radio-frequency (RF) energy absorption-type antennas such as not damages Consumption figure, as seen from the figure, the return loss of these the ten jiaos radio-frequency (RF) energy absorption-type antennas such as not is-32dB, than other same volume sky The return loss of line is also little, and performance is the best.

Fig. 4 is to utilize ten jiaos of the simulation of the HFSS antenna modeling simulation software radio-frequency (RF) energy absorption-type antenna standing wave ratios such as not Figure, as seen from the figure, these ten jiaos not etc. radio-frequency (RF) energy absorption-type antenna be 1.13 in the standing-wave ratio of 2.45GHz, closely 1.

Embodiment above describes the ultimate principle of the present invention, principal character and advantage, the technical staff of the industry should Understanding, the present invention is not restricted to the described embodiments, and 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 radio-frequency (RF) energy absorption-type antennas such as not, it is characterised in that include consistent size and Jie bonded to each other from top to bottom Matter cover layer, medium substrate and earth plate, be wherein pasted with metal antenna with on the medium substrate of dielectric passivation laminating side 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 cylindrical The circular hole that metallic conductor bottom surface is concentric；The material of described dielectric passivation is Rogers RO6002, DIELECTRIC CONSTANT ε_r=2.94, Thickness d=0.51mm, length and width is 30mm；The radius of the circular coverage rate of described metal antenna paster is 0.1057377 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 is Rogers RO6010, DIELECTRIC CONSTANT ε_r=10.2, thickness d=2.54mm, length and width is 30mm, gold The central point belonging to antenna patch is consistent with the center position of medium substrate upper surface；The design shape of described metal antenna paster And size meets following requirement, set up plane right-angle coordinate, by (0mm ,-2.5mm) as starting point, (13.75mm ,-2.5mm) The line segment one of an a length of 13.75mm is made along x-axis positive direction, with point (13.75mm ,-2.5mm) for rotating for another end points Point, rotates 117 ° by line segment one, 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 symmetry obtain a L (5.84127mm ,- 15.45246mm), then along the direction that line segment one and x-axis angle are 63 °, in coordinate axes the 4th interval, extend to original 2 times, It is extended line segment two, prolongation line segment two is made minute surface symmetry with straight line y=-x for axis of symmetry and is extended line segment three, extended line The intersection point of section two and prolongation line segment three isJunction point H respectively (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, makes the line segment of an a length of 2.5mm along x-axis positive direction, with (2.5mm ,-1.25mm) for first The center of circle of individual curve, with (2.5mm, 0mm) for end point, is another end points with (3.75mm ,-1.25mm), radius r₁= 1.25mm, making angle of circumference is 90 °, and direction is the circular arc protruded 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, is another end points with (6.25mm ,-1.25mm), radius r₂= 1.25mm, making angle of circumference is 180 °, and direction is the circular arc protruded to y-axis negative direction, is then the with (7.5mm ,-1.25mm) The center of circle of three curves, with (6.25mm ,-1.25mm) for end point, is another end points with (7.5mm, 0mm), radius r₃= 1.25mm, making angle of circumference is 90 °, and direction is the circular arc protruded to x-axis negative direction and y-axis positive direction, with (7.5mm ,- 2.5mm) it is the center of circle of the 4th curve, with (7.5mm, 0mm) for end point, is another end points with (10mm ,-2.5mm), radius r₄=2.5mm, making angle of circumference is 90 °, and direction is the circular arc protruded to x-axis and y-axis positive direction；With (13.75mm ,-2.5mm) It is the center of circle of the 5th curve, with (10mm ,-2.5mm) for end point, with H (15.45246mm ,-5.84127mm) for the other end Point, radius r₅=3.75mm, making angle of circumference is 117 °, and direction is the circular arc protruded to x-axis and y-axis negative direction, obtains initial Figure one, with straight line y=-x as axis of symmetry, carries out initial graphics one minute surface symmetry, obtains initial graphics two, line segment HW, line Section LW, initial graphics one and initial graphics two merging obtain rotating graphs one, by rotating graphs one with pointFor the point of rotation, turn clockwise 36 ° and entirety is reduced into original 0.8 Times, obtain rotating graphs two, by rotating graphs one with pointFor the point of rotation, up time Pin rotates 72 °, obtains rotating graphs three, by rotating graphs one with point For the point of rotation, turn clockwise 108 ° and entirety be reduced into original 0.8 times, obtain rotating graphs four, by rotating graphs one with PointFor the point of rotation, turn clockwise 144 °, obtain rotating graphs five, will Rotating graphs one is with pointFor the point of rotation, turn clockwise 180 ° and entirety reduces For original 0.8 times, obtain rotating graphs six, by rotating graphs one with pointFor rotating Point, turns clockwise 216 °, obtains rotating graphs seven, by rotating graphs one with point For the point of rotation, turn clockwise 252 ° and entirety be reduced into original 0.8 times, obtain rotating graphs eight, by rotating graphs one with PointFor the point of rotation, turn clockwise 288 °, obtain rotating graphs nine, By rotating graphs one with pointFor the point of rotation, turn clockwise 324 ° also Entirety is reduced into original 0.8 times, obtains rotating graphs ten, rotating graphs one, rotating graphs two, rotating graphs three, rotation figure Shape four, rotating graphs five, rotating graphs six, rotating graphs seven, rotating graphs eight, rotating graphs nine and rotating graphs ten merge To closed figure, it is that original 0.35833 times obtains required metal antenna patch by the circular coverage rate reduced radius of closed figure The design shape of sheet and size, obtain metal antenna paster according to design shape and size cutting；Described cylindrical metal conductor One end be connected with metal antenna paster, the material of cylindrical metal conductor is copper, its bottom surface radius r=0.5mm, thickness d= 2.54mm, cylindrical metal conductor divides with the vertical dimension of four sides in the center of circle, junction and medium substrate of metal antenna paster Not Wei 16.58mm, 16.58mm, 13.42mm and 13.42mm, the aperture of circular hole on the earth plate relative with cylindrical metal conductor R=1.9mm, the output interface of the described cylindrical metal conductor other end is connected with energy management circuit, this energy management circuit For the energy absorbed is stored.