CN106374200A - High-gain decagonal high-frequency power absorption type microstrip antenna - Google Patents

Abstract

The invention discloses a high-gain decagonal high-frequency power absorption type microstrip antenna. The high-gain decagonal high-frequency power absorption type microstrip antenna comprises a dielectric covering layer, a dielectric substrate an a grounding plate which are consistent in dimension top to bottom and are mutually laminated, wherein a metal antenna patch is attached to the dielectric substrate on one side laminated with the dielectric covering layer; a cylindrical metal conductor which perpendicularly runs through the dielectric substrate is arranged in the middle part of the dielectric substrate; and three annular nicks and a circular hole which is concentric with the bottom surface of the cylindrical metal conductor are formed in the grounding plate. The high-gain decagonal high-frequency power absorption type microstrip antenna has lower return loss, good impedance matching and standing-wave ratio, and relatively high gain, so radio frequency energy in an environment can be efficiently received.

Description

Ten jiaos of high frequency power absorption-type microstrip antennas of high-gain

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 high frequency power absorption-type microstrip antennas of high-gain.

Background technology

At home, start late with regard to the transmission technology research in the radio-frequency wireless energy confined space, rapidly send out in science and technology Today of exhibition, with the raising of economic progress and 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.

Content of the invention

Present invention solves the technical problem that there is provided a kind of ten jiaos of high frequency work(of structure high-gain simple and reasonable in design Rate absorption-type microstrip antenna, the less size having for the more other antenna of this antenna, relatively low clawback are lost, well 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 high frequency power absorption-type micro-strip of high-gain Antenna it is characterised in that including consistent size and dielectric passivation bonded to each other, medium substrate and earth plate from top to bottom, its In fit with dielectric passivation side medium substrate on be pasted with metal antenna paster, the middle part of medium substrate is provided with vertically to be passed through Wear the cylindrical metal conductor of medium substrate, earth plate is provided with three annular breach and concentric with cylindrical metal conductor bottom surface Circular hole；The material of described dielectric passivation is rogers ro6002, DIELECTRIC CONSTANT ε_r=2.94, thickness d=0.51mm is long Degree and width are 30mm；The radius of the circular coverage rate of described metal antenna paster is 0.11176 λ, wherein λ=122mm, λ For 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 30mm, the central point of metal antenna paster and medium The center position of upper surface of base plate is consistent；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, will Line segment one obtains line segment two with point (18mm, 0mm) for 132 ° as point of rotation rotate counterclockwise, then along line segment two with x-axis angle is 48 ° of direction, extends to original 2 times in coordinate axess the 4th interval and is extended line segment two, and this prolongation 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 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 successively Rotation 36 °, 72 °, 108 °, 144 °, 180 °, 216 °, 252 °, 288 ° and 324 ° respectively obtain rotating graphs two, rotating graphs two, Rotating graphs three, rotating graphs four, rotating graphs five, rotating graphs six, rotating graphs seven, rotating graphs eight, rotating graphs nine With rotating graphs ten, rotating graphs one, rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five, rotating graphs 6th, rotating graphs seven, rotating graphs eight, rotating graphs nine and rotating graphs ten merge and obtain closed figure, by closed figure The reduced radius of circular coverage rate to the original 0.315 times design shape obtaining required metal antenna paster and size, according to Design shape and size cutting obtain metal antenna paster；With the bottom center of earth plate as the center of circle, making internal ring radius respectively is 10mm, ring width are the annular breach one of 0.25mm, internal ring radius is 12mm, ring width is 0.25mm annular breach two and internal ring half Footpath is 14mm, ring width is the annular breach three of 0.25mm, the aperture r=of circular hole on the earth plate relative with cylindrical metal conductor 1.9mm；One end of described cylindrical metal conductor is connected with metal antenna paster, and the material of cylindrical metal conductor is copper, its The junction center of circle of bottom surface radius r=0.5mm, thickness d=2.54mm, cylindrical metal conductor and metal antenna paster and medium The vertical dimension of four sides of substrate is respectively 16.6mm, 16.6mm, 13.4mm and 13.4mm, and described cylindrical metal conductor is another The output interface of one end 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: ten jiaos of high frequency power absorption-type microstrip antennas of high-gain have lower echo to be damaged Consumption, good impedance matching 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 ten jiaos of high frequency power absorption-type microstrip antenna structure schematic diagrams of high-gain；

Fig. 3 is the ten jiaos of high frequency power absorption-type microstrip antennas of high-gain using the simulation of hfss antenna modeling simulation software Return loss plot；

Fig. 4 is the ten jiaos of high frequency power absorption-type microstrip antennas of high-gain using the simulation of hfss antenna modeling simulation software 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, annular breach, 7, 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 high frequency power absorption-type microstrip antenna designs of high-gain, in microstrip antenna designs When need the size of metal antenna paster to ten jiaos of high frequency power absorption-type microstrip antennas of high-gain, the size of medium substrate, Thickness carries out theoretic estimation, more quickly could accurately find the high increasing of suitable characteristic frequency when simulation experiment Beneficial ten jiaos of high frequency power absorption-type microstrip antennas.So below, explaining each data of microstrip antenna taking rectangular microstrip antenna as a example The theoretical calculation method of parameter.

Patch size l × w, patch width w is:

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

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 impact to antenna performance for the surface wave, the thickness of dielectric substrate should Meet theoretical calculation formula:

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

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 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 high frequency power absorption-type microstrip antennas of high-gain, including consistent size from top to bottom and phase Mutually the dielectric passivation 1 of laminating, medium substrate 2 and earth plate 3, are wherein fitted with dielectric passivation 1 on the medium substrate 2 of side It 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, connects Floor 3 is provided with three annular breach 6 and the circular hole 7 concentric with cylindrical metal conductor 5 bottom surface；Described dielectric passivation 1 Material is rogers ro6002, DIELECTRIC CONSTANT ε_r=2.94, thickness d=0.51mm, length and width is 30mm；Described gold The radius belonging to the circular coverage rate of antenna patch 4 is 0.11176 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 ε_r=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 48 ° along line segment two and x-axis angle as 132 ° of point of rotation rotate counterclockwise, in coordinate axess the Extend to original 2 times in four intervals and be extended line segment two, this prolongation line segment two is with straight lineMake mirror for axis of symmetry Face is symmetrically extended line segment three, extends line segment two and the intersection point of prolongation line segment three is This point is in straight lineOn, line segment two will be extended and extend the intersecting lens of line segment three in straight lineBoth sides are shorter Line segment part leave out respectively, again by initial point (0mm, 0mm) as starting point, make an a length of 2.5mm's along x-axis positive direction Line segment, 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, -1.25mm) is another end points, radius r₁=1.25mm, makes angle of circumference and is 90 °, and direction to x-axis and y-axis is just The circular arc that direction is protruded, 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 It is the circular arc protruding along y-axis negative direction, 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 circle Round angle is 180 °, and direction is the circular arc protruding along y-axis positive direction, the circle being the 4th curve with e (5.625mm, -1.25mm) The heart, with d₁(5mm, -1.25mm) is end point, with e₁(6.25mm, -1.25mm) is another end points, radius r₄=0.625mm, makees Go out angle of circumference and be 180 °, direction is the circular arc protruding along y-axis negative direction, the circle being the 5th curve with f (7.5mm, -1.25mm) The heart, 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 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) for the 6th The center of circle of curve, with f₁(7.5mm, 0mm) is end point, with g₁(10mm, -2.5mm) is another end points, radius r₆=2.5mm, Make angle of circumference and be 90 °, direction is the circular arc protruding to x-axis and y-axis positive direction, with h (11.875mm, -2.5mm) for the 7th The center of circle of curve, 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 the circular arc protruding to y-axis negative direction, with i (16.25mm, -2.5mm) for the The center of circle of eight curves, 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 °, and direction is the circular arc protruding to x-axis negative direction and y-axis positive direction, with i₁(16.25mm, It is 0mm) end point, b (18mm, 0mm) is another end points, make the line segment that a length is 1.75mm, in x-axis and y-axis plane To initial graphics one, by initial graphics one with straight lineMake minute surface for axis of symmetry and symmetrically obtain initial graphics two, initially Figure 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, clockwise successively 36 ° of rotation, 72 °, 108 °, 144 °, 180 °, 216 °, 252 °, 288 ° and 324 ° respectively obtain rotating graphs two, 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, by the reduced radius of the circular coverage rate of closed figure to original 0.315 times of design shape obtaining required metal antenna paster 4 and size, obtain metal sky according to design shape and size cutting Line paster 4；With the bottom center of earth plate 3 as the center of circle, make respectively internal ring radius be 10mm, ring width be 0.25mm annular breach One, internal ring radius is 12mm, ring width is the annular breach two of 0.25mm and internal ring radius is 14mm, the annular for 0.25mm for the ring width Breach three, the aperture r=1.9mm of circular hole 7 on the earth plate 3 relative with cylindrical metal conductor 5；Described cylindrical metal conductor 5 one end is connected with metal antenna paster 4, and the material of cylindrical metal conductor 5 is copper, its bottom surface radius r=0.5mm, thickness d =2.54mm, cylindrical metal conductor 5 is vertical with 2 four sides in the junction center of circle and medium substrate of metal antenna paster 4 Distance respectively 16.6mm, 16.6mm, 13.4mm and 13.4mm, the output interface of described cylindrical metal conductor 5 other end with Energy management circuit is connected, and this energy management circuit is used for being stored the energy absorbing.

Fig. 3 is the ten jiaos of high frequency power absorption-type microstrip antennas of high-gain using the simulation of hfss antenna modeling simulation software Return loss plot, as seen from the figure, the return loss of ten jiaos of high frequency power absorption-type microstrip antennas of this high-gain is -38db, than it The return loss of its same volume antenna is also little, and performance is very good.

Fig. 4 is to be stayed using ten jiaos of high frequency power absorption-type microstrip antennas of high-gain of hfss antenna modeling simulation software simulation Bob figure, as seen from the figure, ten jiaos of high frequency power absorption-type microstrip antennas of this high-gain are 1.0251 in the standing-wave ratio of 2.45ghz, Very close to 1, matching performance is very good.

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 high frequency power absorption-type microstrip antennas of high-gain are it is characterised in that include consistent size and mutual patch from top to bottom Dielectric passivation, medium substrate and the earth plate closing, the medium substrate of side of wherein fitting with dielectric passivation is pasted with gold Belong to antenna patch, the middle part of medium substrate is provided with the cylindrical metal conductor extending vertically through medium substrate, and earth plate is provided with three Bar annular breach and the circular hole concentric with cylindrical metal conductor bottom surface；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 circle of described metal antenna paster The radius of shape coverage rate is 0.11176 λ, and wherein λ=122mm, λ are the wavelength of 2.45ghz radio frequency, and thickness is 0.02mm, material For copper, the material of described medium substrate is rogers ro6010, DIELECTRIC CONSTANT ε_r=10.2, thickness d=2.54mm, length and Width is 30mm, and the central point of metal antenna paster is consistent with the center position of medium substrate upper surface；Described metal sky The design shape of line paster and size meet following requirement, set up plane right-angle coordinate, and initial point (0mm, 0mm) conduct is risen Point, makes the line segment one of an a length of 18mm along x-axis positive direction, and line segment one is counterclockwise as the point of rotation with point (18mm, 0mm) 132 ° of rotation obtains line segment two, then the direction being 48 ° along line segment two and x-axis angle, extends to former in coordinate axess the 4th interval 2 times come are extended line segment two, and this prolongation line segment two is with straight lineMake minute surface for axis of symmetry and be symmetrically extended line Section three, extends 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 the intersecting lens of line segment three in straight lineThe shorter line segment part in both sides Leave 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) is the center of circle of first curve, with a (2.5mm, 0mm) for end point, with b₁(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 C (4.0625mm, -1.25mm) is the center of circle of second curve, 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 one End points, with e₁(6.25mm, -1.25mm) is another end points, radius r₄=0.625mm, makes angle of circumference and is 180 °, direction is along y-axis The circular arc that negative direction is protruded, the center of circle being the 5th curve with f (7.5mm, -1.25mm), with e₁(6.25mm, -1.25mm) is one end Point, with f₁(7.5mm, 0mm) is another end points, radius r₅=1.25mm, makes angle of circumference and is 90 °, direction is to x-axis negative direction and y The circular arc that axle positive 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 °, direction is to y-axis negative direction The circular arc protruding, the center of circle being the 8th curve with i (16.25mm, -2.5mm), with h₁(13.75mm, -2.5mm) is one end Point, with i₁(16.25mm, 0mm) is another end points, radius r₈=2.5mm, makes angle of circumference and is 90 °, direction be to x-axis negative direction and The circular arc that y-axis 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 axis of symmetry Make minute surface and symmetrically obtain initial graphics two, initial graphics one, initial graphics two, prolongation line segment two and prolongation line segment three merging are revolved Turn figure one, by rotating graphs one with pointFor the point of rotation, rotate successively clockwise 36 °, 72 °, 108 °, 144 °, 180 °, 216 °, 252 °, 288 ° and 324 ° respectively obtain rotating graphs two, rotating graphs three, rotation Figure four, rotating graphs five, rotating graphs six, rotating graphs seven, rotating graphs eight, rotating graphs nine and rotating graphs ten, rotation Turn figure one, rotating graphs two, rotating graphs three, rotating graphs four, rotating graphs five, rotating graphs six, rotating graphs seven, rotation Turn figure eight, rotating graphs nine and rotating graphs ten merging and obtain closed figure, by the radius of the circular coverage rate of closed figure Narrow down to design shape and the size that original 0.315 times obtains required metal antenna paster, cut out according to design shape and size Cut and obtain metal antenna paster；With the bottom center of earth plate as the center of circle, make respectively internal ring radius be 10mm, ring width be 0.25mm Annular breach one, internal ring radius is 12mm, ring width is the annular breach two of 0.25mm and internal ring radius is 14mm, ring width is The annular breach three of 0.25mm, the aperture r=1.9mm of circular hole on the earth plate relative with cylindrical metal conductor；Described cylinder One end of shape metallic conductor is connected with metal antenna paster, and the material of cylindrical metal conductor is copper, its bottom surface radius r= The junction center of circle of 0.5mm, thickness d=2.54mm, cylindrical metal conductor and metal antenna paster and four sides of medium substrate The vertical dimension on side is respectively 16.6mm, 16.6mm, 13.4mm and 13.4mm, 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.