CN106329104A - Radio frequency energy absorption edge angle conversion antenna - Google Patents

Abstract

The invention discloses a radio frequency energy absorption edge angle conversion antenna. The radio frequency energy absorption edge angle conversion antenna comprises a dielectric covering layer, a dielectric substrate, and a grounding plate, which are arranged from top to bottom, have the same size, and are attached to each other. The side of the dielectric substrate attached to the dielectric covering layer is provided with a metal antenna paster, and the middle part of the dielectric substrate is provided with a cylindrical metal conductor, which penetrates the dielectric substrate vertically. The grounding plate is provided with a circular hole, which is concentric to the bottom surface of the cylindrical metal conductor. The radio frequency energy absorption edge angle conversion antenna is advantageous in that lower return loss, good impedance matching and standing-wave ratio, and higher gain are provided, and therefore radio frequency energy in environment is effectively received.

Description

Radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna

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 Radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna.

Background technology

At home, start late about the transmission technology research in the radio-frequency wireless energy confined space, rapidly send out in science and technology Today of exhibition, along with economic progress and the raising of scientific research level, increasing company and scientific research institution begin to focus on and open The research of exhibition this respect, carries out the collection of radio frequency energy in the confined space.

Summary of the invention

Present invention solves the technical problem that and there is provided a kind of simple in construction and radio-frequency (RF) energy reasonable in design absorption corner Conversion antenna, this antenna is compared with the less size having for other antenna, the loss of relatively low clawback, good impedance Join and higher gain.

The present invention solves that above-mentioned technical problem adopts the following technical scheme that, radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna, its It is characterised by including consistent size and dielectric passivation bonded to each other, medium substrate and earth plate from top to bottom, wherein with Jie Being pasted with metal antenna paster on the medium substrate of matter cover layer laminating side, the middle part of medium substrate is provided with and extends vertically through medium The cylindrical metal conductor of substrate, earth plate is provided with the circular hole concentric with cylindrical metal conductor bottom surface；Described dielectric overlay The material of layer is Rogers RO6002, DIELECTRIC CONSTANT ε_r=2.94, thickness d=0.51mm, length and width is 30mm；Institute The radius of the circular coverage rate stating metal antenna paster is 0.1131 λ, wherein λ=122mm, and λ is the wavelength of 2.45GHz radio frequency, 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 the center position of 30mm, the central point of metal antenna paster and medium substrate upper surface Unanimously；Design shape and the size of described metal antenna paster 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 105 ° in the counterclockwise direction, with curvilinear equationIntersection point be H (14.72057mm ,-6.1222mm), with straight line y=-x for axis of symmetry make Minute surface symmetry obtains a L (6.1222mm ,-14.72057mm), for axis of symmetry, line segment one is made minute surface with straight line y=-x symmetrical To line segment two, the intersection point of line segment one and line segment two isConnect respectively Point H (14.72057mm ,-6.1222mm),With L (6.1222mm ,- 14.72057mm)、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 (14.72057mm ,-6.1222mm) for the other end Point, radius r₅=3.75mm, making angle of circumference is 105 °, 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 60 ° and entirety is reduced into original 0.8 Times, obtain rotating graphs two, by rotating graphs two with pointFor the point of rotation, suitable Hour hands rotate 120 °, obtain rotating graphs three, by rotating graphs one with point For the point of rotation, turn clockwise 180 ° 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 240 °, obtain rotating graphs five, By rotating graphs one with pointFor the point of rotation, turn clockwise 300 ° and whole Body is reduced into original 0.8 times, obtains rotating graphs six, rotating graphs one, rotating graphs two, rotating graphs three, rotating graphs Four, rotating graphs five and the rotating graphs six directions obtain closed figure, is former by the circular coverage rate reduced radius of closed figure The 0.77234 times of design shape obtaining required metal antenna paster come and size, obtain according to design shape and size cutting Metal antenna paster；One end of described cylindrical metal conductor is connected with metal antenna paster, the material of cylindrical metal conductor For copper, its bottom surface radius r=0.5mm, thickness d=2.54mm, cylindrical metal conductor is round with the junction of metal antenna paster The heart is respectively 16.59mm, 16.59mm, 13.41mm and 13.41mm, with cylinder with the vertical dimension of four sides of medium substrate The aperture R=1.9mm of circular hole on the earth plate that metallic conductor is relative, the output interface of the described cylindrical metal conductor other end with Energy management circuit is connected, and this energy management circuit is for storing the energy absorbed.

The technique effect of the present invention is: radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna has lower return loss, good Impedance matching and standing wave 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 radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna structure view；

Fig. 3 is the return loss of the radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna utilizing the simulation of HFSS antenna modeling simulation software Figure；

Fig. 4 is the radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna feed impedance utilizing the simulation of HFSS antenna modeling simulation software 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.

The core of this invention is radio-frequency (RF) energy ABSORPTION EDGE angle transformation Antenna Design, and it is right to need when microstrip antenna designs The size of the metal antenna paster of radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna, the size of medium substrate, thickness carry out theoretic Estimation, more quickly could find the radio-frequency (RF) energy ABSORPTION EDGE angle transformation of applicable characteristic frequency simulation experiment when accurately 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 Δ 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, radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna, 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 gold Belonging to antenna patch 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 sets There is the circular hole 6 concentric with cylindrical metal conductor 5 bottom surface；The material of described dielectric passivation 1 is Rogers RO6002, dielectric 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 is 0.1132 λ, wherein λ=122mm, and λ is the wavelength of 2.45GHz radio frequency, and thickness is 0.02mm, and material is copper, is given an account of The material of matter substrate 2 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 4 is consistent with the center position of medium substrate 2 upper surface；Described metal antenna paster 4 Design shape 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 105 °, with curvilinear equationIntersection point be H (14.72057mm ,-6.1222mm), with straight line y=-x for axis of symmetry make Minute surface symmetry obtains a L (6.1222mm ,-14.72057mm), for axis of symmetry, line segment one is made minute surface with straight line y=-x symmetrical To line segment two, the intersection point of line segment one and line segment two isConnect respectively Point H (14.72057mm ,-6.1222mm),With L (6.1222mm ,- 14.72057mm)、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 (14.72057mm ,-6.1222mm) for the other end Point, radius r₅=3.75mm, making angle of circumference is 105 °, 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 60 ° and entirety is reduced into original 0.8 Times, obtain rotating graphs two, by rotating graphs two with pointFor the point of rotation, suitable Hour hands rotate 120 °, obtain rotating graphs three, by rotating graphs one with point For the point of rotation, turn clockwise 180 ° 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 240 °, obtain rotating graphs five, By rotating graphs one with pointFor the point of rotation, turn clockwise 300 ° also Entirety is reduced into original 0.8 times, obtains rotating graphs six, rotating graphs one, rotating graphs two, rotating graphs three, rotation figure Shape four, rotating graphs five and the rotating graphs six directions also obtain closed figure, by the circular coverage rate reduced radius of closed figure are 0.77234 times originally obtains design shape and the size of required metal antenna paster 4, obtains according to design shape and size cutting To metal antenna paster 4；One end of described cylindrical metal conductor 5 is connected with metal antenna paster 4, cylindrical metal conductor 5 Material be copper, its bottom surface radius r=0.5mm, thickness d=2.54mm, cylindrical metal conductor 5 and metal antenna paster 4 The vertical dimension of the center of circle, junction and 2 four sides of medium substrate be respectively 16.59mm, 16.59mm, 13.41mm and 13.41mm, the aperture R=1.9mm of circular hole 6 on the earth plate 3 relative with cylindrical metal conductor 5, described cylindrical metal is led The output interface of body 5 other end is connected with energy management circuit, and this energy management circuit is for storing up the energy absorbed Deposit.

Fig. 3 is the return loss of the radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna utilizing the simulation of HFSS antenna modeling simulation software Figure, as seen from the figure, the return loss of this radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna is-35dB, than other same volume antenna Return loss is also little, and performance is the best.

Fig. 4 is the radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna feed impedance utilizing the simulation of HFSS antenna modeling simulation software Figure, as seen from the figure, this radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna is 50.87 Ω at the input impedance of 2.45GHz, closely marks Quasi-impedance 50 Ω.

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. radio-frequency (RF) energy ABSORPTION EDGE angle transformation antenna, it is characterised in that include consistent size and medium bonded to each other from top to bottom Cover layer, medium substrate and earth plate, be wherein pasted with metal antenna patch with on the medium substrate of dielectric passivation laminating side Sheet, the middle part of medium substrate is provided with the cylindrical metal conductor extending vertically through medium substrate, and earth plate is provided with and cylinder gold Belong to the circular hole that conductor bottom surface is concentric；The material of described dielectric passivation is Rogers RO6002, DIELECTRIC CONSTANT ε_r=2.94, thick Degree d=0.51mm, length and width is 30mm；The radius of the circular coverage rate of described metal antenna paster is 0.1131 λ, its Middle 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 ε_r=10.2, thickness d=2.54mm, length and width is 30mm, metal antenna paster Central point consistent with the center position of medium substrate upper surface；The design shape of described metal antenna paster and size meet Following requirement, sets up plane right-angle coordinate, and by (0mm ,-2.5mm) as starting point, (13.75mm ,-2.5mm) is another end points The line segment one of an a length of 13.75mm is made, with point (13.75mm ,-2.5mm) for the point of rotation, by line segment one along x-axis positive direction Rotate 105 ° in the counterclockwise direction, with curvilinear equationIntersection point be H (14.72057mm ,- 6.1222mm), make minute surface symmetry with straight line y=-x for axis of symmetry and obtain a L (6.1222mm ,-14.72057mm), by line segment one Making minute surface symmetry with straight line y=-x for axis of symmetry and obtain line segment two, the intersection point of line segment one and line segment two isDifference junction point H (14.72057mm ,-6.1222mm),With L (6.1222mm ,-14.72057mm),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 (14.72057mm ,-6.1222mm), radius r₅=3.75mm, makes Angle of circumference is 105 °, and direction is the circular arc protruded to x-axis and y-axis negative direction, obtains initial graphics one, is right with straight line y=-x Claim axle, initial graphics one is carried out minute surface symmetry, obtains initial graphics two, line segment HW, line segment LW, initial graphics one and initial graph Shape two merging obtains rotating graphs one, by rotating graphs one with point For the point of rotation, turn clockwise 60 ° and entirety be reduced into original 0.8 times, obtain rotating graphs two, by rotating graphs two with PointFor the point of rotation, turn clockwise 120 °, obtain rotating graphs Three, by rotating graphs one with pointFor the point of rotation, dextrorotation Turn 180 ° and entirety is reduced into original 0.8 times, obtain rotating graphs four, by rotating graphs one with pointFor the point of rotation, turn clockwise 240 °, obtain rotating graphs five, By rotating graphs one with pointFor the point of rotation, turn clockwise 300 ° And entirety is reduced into original 0.8 times, obtain rotating graphs six, rotating graphs one, rotating graphs two, rotating graphs three, rotation Figure four, rotating graphs five and the rotating graphs six directions also obtain closed figure, by the circular coverage rate reduced radius of closed figure For the original 0.77234 times design shape obtaining required metal antenna paster and size, according to design shape and size cutting Obtain metal antenna paster；One end of described cylindrical metal conductor is connected with metal antenna paster, cylindrical metal conductor Material is copper, its bottom surface radius r=0.5mm, thickness d=2.54mm, cylindrical metal conductor and the connection of metal antenna paster The center of circle, place is respectively 16.59mm, 16.59mm, 13.41mm and 13.41mm, with circle with the vertical dimension of four sides of medium substrate The aperture R=1.9mm of circular hole on the earth plate that cylindricality metallic conductor is relative, the output of the described cylindrical metal conductor other end connects Mouth is connected with energy management circuit, and this energy management circuit is for storing the energy absorbed.