CN209231970U - Hyperfrequency anti-metal electronic tag - Google Patents
Hyperfrequency anti-metal electronic tag Download PDFInfo
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- CN209231970U CN209231970U CN201920089468.0U CN201920089468U CN209231970U CN 209231970 U CN209231970 U CN 209231970U CN 201920089468 U CN201920089468 U CN 201920089468U CN 209231970 U CN209231970 U CN 209231970U
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Abstract
The utility model relates to a kind of hyperfrequency anti-metal electronic tags, belong to technical field of RFID.Including antenna, antenna includes antenna body radiating layer and antenna bottom, is connected between antenna body radiating layer and antenna bottom by antenna micro strip, binding chip on antenna micro strip；U-type groove is opened up on antenna body radiating layer, medium substrate is clamped between antenna body radiating layer and antenna bottom, and medium substrate is located at antenna micro strip one end and opens up chip avoid holes.The utility model simple process, high production efficiency are at low cost.The utility model improves the readwrite performance of electronic tag, ensure that the reading/writing distance of electronic tag.
Description
Technical field
The utility model relates to a kind of hyperfrequency anti-metal electronic tags, belong to technical field of RFID.
Background technique
As shown in figure 13, in many applications, RFID label tag needs to be attached at metal object surface, has class dipole day
When the ordinary passive ultra-high frequency RFID label of line is applied to metal surface, performance can sharply decline, or even cannot be effectively read.
Influence of the metal object for label antenna parameter and performance, main there are two aspect, one is antenna field, one
It is antenna parameter, such as: impedance, S parameter, radiation efficiency.9 He of incidence wave for thering is RFID reader to emit in the field that antenna is worked
By the reflected metal surface back wave 11 in metal surface 6, and the incidence wave 9 of RFID reader transmitting and metal surface are reflected
Wave 11 causes to cancel out each other to a certain extent between the two so that field strength weakens, in this way, work there is certain phase difference
The antenna of RFID electronic label 7 in such circumstances can not induce enough electric currents just to provide energy for label chip,
The antenna of RFID electronic label 7 can not reflect the antenna-reflected wave 10 of RFID electronic label, so that label chip can not be swashed
Work leads to not work: and antenna parameter variation is to regard metal plate as antenna since Antenna Operation is when metal surface
A part of itself, accordingly even when the physical size of antenna, there is no variation, impedance value, S parameter etc. still has occurred
Change, so as to cause the decline of antenna performance.Therefore, when being suitable for metal environment, suitable anti-metal tag is designed, is to protect
Demonstrate,prove a premise of RFID system application effect.Hyperfrequency anti-metal electronic tag main Types: common anti-metal tag master
There are ABS class, PCB class, drop glue class, ceramic-like, foam class, flexible anti-metal electronic tag, and various samples can be fabricated to
Formula and shape, such as bar shaped, rectangular, round.Anti-metal tag is widely used in electric power asset management, Corporate Asset Management, sets
Standby management, the metal management of hazardous material management field, the pallet control in logistics, assets tracking, metal shelf management etc..
1, ABS anti-metal tag
Such label construction mainly passes through ABS plastic shell, increases label and reaches superelevation at a distance from metal surface
The purpose of frequency marking label anti-metal, defect are that size is too big, and it is poor to read same effect.
2, PCB anti-metal tag
In numerous PCB label materials, by fire retardant 4, FR-4, anti-metal RFID label tag made of laminated material, although
Performance is stablized, but process is complicated, higher cost.
3, glue anti-metal tag is dripped
The substrate encapsulation combined using foam with drop glue, higher cost are mainly suitable for high frequency class anti-metal electronic tag
Encapsulation, in contrast read apart from limited.
4, ceramic anti-metal tag
It is encapsulated using special cermacis substrate, is mountable to metallics surface, there is stronger anticorrosive property, applicable evil
Bad working environment.The greatest drawback of such label is complex technical process, and cost is too high.
5, flexible anti-metal tag
Flexible with certain flexibility, size is smaller, and there is certain flexibility can paste the big affixed object of radian,
But reading/writing distance is closer, recognition effect is bad.
Utility model content
The purpose of the utility model is to provide a kind of hyperfrequency anti-metal electronic tags, improve the read-write of electronic tag
Can, it ensure that the reading/writing distance of electronic tag.
The another object of the utility model is to provide a kind of production method of hyperfrequency anti-metal electronic tag, technique letter
Single, high production efficiency is at low cost.
Hyperfrequency anti-metal electronic tag described in the utility model, including antenna, antenna include antenna body radiating layer
It with antenna bottom, is connected between antenna body radiating layer and antenna bottom by antenna micro strip, binding chip on antenna micro strip；It
U-type groove is opened up on line main body radiating layer, medium substrate is clamped between antenna body radiating layer and antenna bottom, and medium substrate is located at
Antenna micro strip one end opens up chip avoid holes.
Relative dielectric constant < 2.8 of medium substrate.By the way that certain thickness medium with low dielectric constant substrate is arranged, eliminate
Be lost caused by the antenna-reflected electron waves phase difference on metal object surface and electronic tag, ensure that the read-write of electronic tag away from
From.
The antenna body radiating layer two sides open up U-type groove.
The U-type groove interlaced arrangement of the antenna body radiating layer two sides.
The antenna micro strip includes the first antenna micro-strip on antenna body radiating layer, and first antenna micro-strip is equipped with
First contact；It further include the second antenna micro strip on antenna bottom, the second antenna micro strip is equipped with the second contact, the first contact
With the second contact binding chip.
The production method of hyperfrequency anti-metal electronic tag described in the utility model, comprising the following steps:
(1) etching antenna: being etched by chemical agent, obtains antenna, and antenna includes antenna body radiating layer and antenna bottom,
It is connected between antenna body radiating layer and antenna bottom by antenna micro strip, antenna body radiating layer two sides open up U-type groove；
(2) chip bonding: in chip bonding equipment, using on conducting resinl binding chip to antenna micro strip, electronics mark is obtained
Sign dry inlay product；
(3) it after electronic tag does inlay product coating adhesive sticker or compound adhesive sticker, by being die cut waste discharge, obtains with glue
The wet inlay product of electronic tag；
(4) medium substrate: medium substrate one end opens up chip avoid holes；
(5) the chip avoid holes of the chip alignment medium substrate of the wet inlay product of the electronic tag with glue, and be with chip
Symmetrical centre, the aerial radiation body layer and antenna bottom of doubling antenna, aerial radiation body layer and antenna bottom are opened respectively
It is attached on two faces of medium substrate, obtains hyperfrequency anti-metal electronic tag.
The centre frequency of the hyperfrequency anti-metal electronic tag can be adjusted, by the following method so as to preferably
The electrical property of distribution chip.First is that the length and width of adjustment antenna entirety；Second is that the length and width of adjustment U-type groove, third is that adjusting
The thickness of whole medium substrate.Above-mentioned three kinds of adjusting methods can choose the combination of any method or any two kinds or more.
According to the radiation theory of microstrip antenna, the structure of a micro-strip paster antenna is by radiator, dielectric layer and ground plane
Composition.Parameter relevant to antenna performance includes the relative dielectric constant ε of the length L of radiator, the width W of radiator, medium
R, the length and width of loss tangent, dielectric layer.In the case where given above-mentioned parameter, the working frequency of rectangular microstrip antenna and
Length L, the width W of radiator of radiator are related.
In formula:
L is the length of radiator, W is the width of radiator, c is electromagnetic transmission speed, f0For wave frequency, εγFor
Dielectric permittivity, Δ L are radiating slot size.
According to above-mentioned theory foundation and calculation formula, for different application conditions, can by adjusting various parameters and
Variable allows the electrical property of label to reach desired numerical value and target.
Hyperfrequency anti-metal electronic tag described in the utility model, antenna body radiating layer are radiator, medium base
Plate is dielectric layer, and antenna bottom is ground plane.
The material of the antenna is that aluminium foil layer passes through the compound PET film layer of gluing oxidant layer.
The medium substrate material is polypropylene PP.
The U-type groove interlaced arrangement of the antenna body radiating layer two sides.
Compared with prior art, the beneficial effect of hyperfrequency anti-metal electronic tag described in the utility model is:
1, the utility model connects aerial radiation body layer and antenna bottom by antenna micro strip, effectively reduces electronics mark
Impedance real part is signed, reduces loss of the energy on electronic tag, improves the readwrite performance of electronic tag；
2, by the way that certain thickness medium with low dielectric constant substrate is arranged, the day of metal object surface and electronic tag is eliminated
It is lost caused by line reflection electron waves phase difference, ensure that the reading/writing distance of electronic tag；
3, after antenna bottom and metal surface come close to or in contact with, reflection by metal surface to electromagnetic wave improves electromagnetism
The reflection efficiency of wave has enhancement effect to antenna.
Compared with prior art, the production method beneficial effect of hyperfrequency anti-metal electronic tag described in the utility model
It is:
The utility model simple process, high production efficiency are at low cost.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of an embodiment of the utility model,
Fig. 2 is antenna structure view in the utility model embodiment 1,
Fig. 3 is chip bonding partial enlarged view at A in Fig. 2,
Fig. 4 is antenna material-structure schematic diagram,
Fig. 5 is medium baseplate structure schematic diagram,
Fig. 6 is that the embodiment of the utility model puts up schematic diagram.
Fig. 7 is that the utility model embodiment 1 reads distance test figure on polypropylene board,
Fig. 8 is that the utility model embodiment 1 reads distance test figure on stainless steel,
Fig. 9 is antenna structure view in the utility model embodiment 2,
Figure 10 is that the utility model embodiment 2 reads distance test figure on polypropylene board,
Figure 11 is that the utility model embodiment 2 reads distance test figure on stainless steel,
Figure 12 is microstrip antenna working principle structural schematic diagram,
Figure 13 is that RFID electronic label is applied to electronic tag performance decline schematic diagram when metal surface in the prior art.
In figure: 1, antenna 2, medium substrate 3, chip 4, metal surface 5, hyperfrequency anti-metal electronic tag
6, incidence wave 10, RFID electronics mark that metal surface 7, RFID electronic label 8, RFID reader 9, RFID reader emit
Antenna-reflected wave 11, metal surface back wave 12, radiator 13, radiating slot 14, the dielectric layer 15, ground plane of label；
1.1, antenna body radiating layer 1.2, antenna bottom 1.3, U-type groove 1.4, first antenna micro-strip 1.5, second are touched
Point the 1.6, second antenna micro strip 1.7, the first contact 1.8, aluminium foil layer 1.9, gluing oxidant layer 1.10, PET film；
2.1, chip avoid holes.
In Figure 12, L indicates that radiation body length, W indicate that radiator width, ⊿ L indicate radiating slot.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, to the technical scheme in the embodiment of the utility model make into
One step clearly and completely describes:
Embodiment 1
The production method of hyperfrequency anti-metal electronic tag described in the utility model, comprising the following steps:
(1) etching antenna: as shown in figure 4, using 30 microns of thickness of PET film layer, gluing oxidant layer uses plastic-aluminum combined glue
Water, using 10 microns of thickness of aluminium foil layer 1.8, aluminium foil layer is by the compound PET film layer 1.10 of gluing oxidant layer 1.9, after overcuring
It is made into antenna etching material；It is etched by chemical agent, obtains antenna 1 as shown in Figure 2, antenna 1 includes antenna body radiating layer
1.1 and antenna bottom 1.2, pass through antenna micro strip between antenna body radiating layer 1.1 and antenna bottom 1.2 and connects, antenna body
1.1 two sides of radiating layer open up U-type groove 1.3；1.3 interlaced arrangement of U-type groove of 1.1 two sides of antenna body radiating layer.
(2) chip bonding: in chip bonding equipment, using on conducting resinl binding chip to antenna micro strip, electronics mark is obtained
Sign dry inlay product；
(3) it after electronic tag does inlay product coating adhesive sticker or compound adhesive sticker, by being die cut waste discharge, obtains with glue
The wet inlay product of electronic tag；
(4) medium substrate: as shown in figure 5, selecting the polypropylene PP of 5 millimeters thicks as medium substrate material, medium substrate 2
One end opens up chip avoid holes 2.1；Polypropylene PP has good electrical property, including high dielectric strength, low-k and low damage
Consume the factor.Wherein electric power application is typically chosen homopolymer.
(5) as shown in Figure 1, the chip of the 3 alignment medium substrate 2 of chip of the wet inlay product of the electronic tag with glue avoids
Hole 2.1, and be symmetrical centre, the aerial radiation body layer 1.1 and antenna bottom 1.2 of doubling antenna 1, by antenna spoke with chip 3
It penetrates body layer 1.1 and antenna bottom 1.2 is posted to respectively on two faces of medium substrate 2, obtain hyperfrequency anti-metal electronic tag
5。
The centre frequency of the hyperfrequency anti-metal electronic tag can be adjusted, by the following method so as to preferably
The electrical property of distribution chip.First is that the length and width of adjustment antenna entirety；Second is that the length and width of adjustment U-type groove；Third is that adjusting
The thickness of whole medium substrate.Above-mentioned three kinds of adjusting methods can choose the combination of any method or any two kinds or more.
As shown in figure 12, according to the radiation theory of microstrip antenna, the structure of a micro-strip paster antenna is by radiator 12, Jie
Matter layer 13 and ground plane 14 form.Ground plane 14 is for directly contacting article surface.Parameter relevant to antenna performance includes spoke
The length and width of the length L of beam, the width W of radiator, relative dielectric constant ε r of medium, loss tangent, dielectric layer.?
In the case where given above-mentioned parameter, the working frequency of rectangular microstrip antenna is related to the length L of radiator, the width W of radiator.
In formula:
L is the length of radiator, W is the width of radiator, c is electromagnetic transmission speed, f0For wave frequency, εγFor
Dielectric permittivity, Δ L are radiating slot size.
According to above-mentioned theory foundation and calculation formula, for different application conditions, can by adjusting various parameters and
Variable allows the electrical property of label to reach desired numerical value and target.
Hyperfrequency anti-metal electronic tag described in the utility model, antenna body radiating layer are radiator, medium base
Plate is dielectric layer, and antenna bottom is ground plane.As shown in figs 1 to 6, hyperfrequency anti-metal electricity described in the utility model
Subtab, including antenna, antenna includes antenna body radiating layer and antenna bottom, between antenna body radiating layer and antenna bottom
It is connected by antenna micro strip, binding chip on antenna micro strip；U-type groove, antenna body radiating layer are opened up on antenna body radiating layer
Medium substrate is clamped between antenna bottom, medium substrate is located at antenna micro strip one end and opens up chip avoid holes.The antenna
Main body radiating layer two sides open up U-type groove.The U-type groove interlaced arrangement of the antenna body radiating layer two sides.The antenna is micro-
Band includes the first antenna micro-strip 1.4 on antenna body radiating layer, and first antenna micro-strip 1.4 is equipped with the first contact 1.7；Also
Including the second antenna micro strip 1.6 being set on antenna bottom 1.5, the second antenna micro strip 1.6 is equipped with the second contact 1.5, the first touching
Point 1.7 and 1.5 binding chip 3 of the second contact.Hyperfrequency anti-metal electronic tag is being puted up in use, requiring antenna bottom 1.2
Close to metal surface 4, use is fixed in aerial radiation body layer 1.1 outwardly.Hyperfrequency anti-metal electronic tag can also
To be posted in the use of non-metal article surface.
As shown in fig. 7, UHF anti-metal electronic tag is when on non-metal article surface, by multiple star RFID integration test
Instrument test, in frequency range that meet national standards, 920-925MHz, forward direction reads distance and is respectively as follows: 10.22 meters, 11.08
Rice, 11.77 meters, it is 11.02 meters average.Centre frequency 920-925MHz.
As shown in figure 8, UHF anti-metal electronic tag is when in stainless steel surface, by multiple star RFID comprehensive tester
Test, in frequency range that meet national standards, 920-925MHz reads distance and is respectively as follows: 18.25 meters, 19.92 meters, 19.92
Rice, it is 19.36 meters average.Centre frequency 925-930MHz.
3 samples are exactly that 3 completely the same electronic tags are made into according to Antenna Design, are carried out on multiple star test equipment
Test under the same terms, test result are reflected on the curve shape of drawing, can compare the consistency of tag performance and steady
It is qualitative.
Embodiment 2
The production method of hyperfrequency anti-metal electronic tag described in the utility model, comprising the following steps:
(1) etching antenna: as shown in figure 4, using 30 microns of thickness of PET film layer, gluing oxidant layer uses plastic-aluminum combined glue
Water, using 10 microns of aluminium foil layer of thickness, aluminium foil layer is made into antenna erosion by the compound PET film layer of gluing oxidant layer after overcuring
Carve material；It is etched by chemical agent, obtains antenna as shown in Figure 9, antenna includes antenna body radiating layer and antenna bottom, day
It is connected between line main body radiating layer and antenna bottom by antenna micro strip, antenna body radiating layer two sides open up U-type groove；Described
The U-type groove interlaced arrangement of antenna body radiating layer two sides.
(2) chip bonding: in chip bonding equipment, using on conducting resinl binding chip to antenna micro strip, electronics mark is obtained
Sign dry inlay product；
(3) it after electronic tag does inlay product coating adhesive sticker or compound adhesive sticker, by being die cut waste discharge, obtains with glue
The wet inlay product of electronic tag；
(4) medium substrate: as shown in figure 5, selecting the polypropylene PP of 4 millimeters thicks as medium substrate material, medium substrate
One end opens up chip avoid holes；Polypropylene PP has a good electrical property, including high dielectric strength, low-k and low-loss because
Son.Wherein electric power application is typically chosen homopolymer.
(5) as shown in Figure 1, the chip avoid holes of the chip alignment medium substrate of the wet inlay product of the electronic tag with glue,
And using chip as symmetrical centre, the aerial radiation body layer and antenna bottom of doubling antenna, by aerial radiation body layer and antenna
Bottom is posted to respectively on two faces of medium substrate, obtains hyperfrequency anti-metal electronic tag 5.
The centre frequency of the hyperfrequency anti-metal electronic tag can be adjusted, by the following method so as to preferably
The electrical property of distribution chip.First is that the length and width of adjustment antenna entirety；Second is that the length and width of adjustment U-type groove, third is that adjusting
The thickness of whole medium substrate.Above-mentioned three kinds of adjusting methods can choose the combination of any method or any two kinds or more.
As shown in Fig. 1, Fig. 3-Fig. 6 and Fig. 9, hyperfrequency anti-metal electronic tag described in the utility model, including antenna,
Antenna includes antenna body radiating layer and antenna bottom, is connected between antenna body radiating layer and antenna bottom by antenna micro strip
It connects, binding chip on antenna micro strip；U-type groove is opened up on antenna body radiating layer, between antenna body radiating layer and antenna bottom
Medium substrate is clamped, medium substrate is located at antenna micro strip one end and opens up chip avoid holes.The antenna body radiating layer two sides
Open up U-type groove.The U-type groove interlaced arrangement of the antenna body radiating layer two sides.The antenna micro strip includes being set to antenna
First antenna micro-strip on main body radiating layer, first antenna micro-strip are equipped with the first contact；It further include the on the antenna bottom
Two antenna micro strips, the second antenna micro strip are equipped with the second contact, the first contact and the second contact binding chip.Hyperfrequency anti-metal electricity
Subtab is being puted up in use, requiring antenna bottom close to metal surface, aerial radiation body layer is fixed outwardly to be made
With.
As shown in Figure 10, UHF anti-metal electronic tag is when on non-metal article surface, by multiple star RFID integration test
Instrument test, in frequency range that meet national standards, 920-925MHz, read distance be respectively as follows: 9.23 meters, 11.25 meters,
It is 11.54 meters, 10.67 meters average.Centre frequency 925-930MHz.
As shown in figure 11, UHF anti-metal electronic tag is when in stainless steel surface, by multiple star RFID comprehensive tester
Test, in frequency range that meet national standards, 920-925MHz, reading distance is respectively 16.72 meters, 19.01 meters, 18.88
Rice, it is 18.02 meters average.Centre frequency 930-935MHz.
3 samples are exactly that 3 completely the same electronic tags are made into according to Antenna Design, are carried out on multiple star test equipment
Test under the same terms, test result are reflected on the curve shape of drawing, can compare the consistency of tag performance and steady
It is qualitative.
To the description in the direction of structure and relative positional relationship in the utility model, such as all around above and below description,
Limitations of the present invention are not constituted, only for convenience of description.
Claims (4)
1. a kind of hyperfrequency anti-metal electronic tag, which is characterized in that including antenna, antenna includes antenna body radiating layer and day
Line bottom is connected between antenna body radiating layer and antenna bottom by antenna micro strip, binding chip on antenna micro strip；Antenna master
U-type groove is opened up on body radiating layer, medium substrate is clamped between antenna body radiating layer and antenna bottom, and medium substrate is located at antenna
Micro-strip one end opens up chip avoid holes.
2. hyperfrequency anti-metal electronic tag according to claim 1, which is characterized in that open antenna body radiating layer two sides
If U-type groove.
3. hyperfrequency anti-metal electronic tag according to claim 2, which is characterized in that antenna body radiating layer two sides
U-type groove interlaced arrangement.
4. hyperfrequency anti-metal electronic tag according to claim 1, which is characterized in that antenna micro strip includes being set to antenna
First antenna micro-strip on main body radiating layer, first antenna micro-strip are equipped with the first contact；It further include the on the antenna bottom
Two antenna micro strips, the second antenna micro strip are equipped with the second contact, the first contact and the second contact binding chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920089468.0U CN209231970U (en) | 2019-01-18 | 2019-01-18 | Hyperfrequency anti-metal electronic tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920089468.0U CN209231970U (en) | 2019-01-18 | 2019-01-18 | Hyperfrequency anti-metal electronic tag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209231970U true CN209231970U (en) | 2019-08-09 |
Family
ID=67510680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920089468.0U Active CN209231970U (en) | 2019-01-18 | 2019-01-18 | Hyperfrequency anti-metal electronic tag |
Country Status (1)
| Country | Link |
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| CN (1) | CN209231970U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110796227A (en) * | 2019-10-29 | 2020-02-14 | 北京计算机技术及应用研究所 | Flexible anti-metal RFID passive tag with gap structure |
-
2019
- 2019-01-18 CN CN201920089468.0U patent/CN209231970U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110796227A (en) * | 2019-10-29 | 2020-02-14 | 北京计算机技术及应用研究所 | Flexible anti-metal RFID passive tag with gap structure |
| CN110796227B (en) * | 2019-10-29 | 2024-01-30 | 北京计算机技术及应用研究所 | Flexible anti-metal RFID passive tag with gap structure |
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Address after: 256407 Shandong Zibo County, Huantai Province, north of the first sea Patentee after: Shandong Taibao Information Technology Group Co., Ltd Address before: 256407 Shandong Zibo County, Huantai Province, north of the first sea Patentee before: SHANDONG TAIBAO PREVENTING COUNTERFEIT PRODUCT Co.,Ltd. |
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