CN204087242U - A kind of ultrahigh frequency anti-metal electronic tag - Google Patents
A kind of ultrahigh frequency anti-metal electronic tag Download PDFInfo
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- CN204087242U CN204087242U CN201420645276.0U CN201420645276U CN204087242U CN 204087242 U CN204087242 U CN 204087242U CN 201420645276 U CN201420645276 U CN 201420645276U CN 204087242 U CN204087242 U CN 204087242U
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Abstract
The utility model discloses a kind of ultrahigh frequency anti-metal electronic tag, comprise electronic tag (1) and inhale ripple layer (2), described electronic tag (1) comprises antenna and chip, containing absorbing material, the impedance of described absorbing material and antenna and the impedance conjugate impedance match of chip in described suction ripple layer (2).The utility model passes through high magnetic permeability, low-loss absorbing material as impedance matching layer, by designing the impedance of impedance matching layer and adjusting the impedance of antenna, realize the impedance of matching layer and antenna and the impedance conjugate impedance match of chip, finally realize the normal read-write of ultrahigh frequency electronic tag.Ultrahigh frequency anti-metal electronic tag highly versatile of the present utility model, not only may be used for metal surface, and may be used for nonmetallic surface, has the advantages such as good anti-metal, function admirable, good directionality, reading distance.
Description
Technical field
The utility model belongs to electromagnetic technology field, relates to microwave communication recognition technology, particularly relates to a kind of electronic tag being applied to ultrahigh frequency by design electromagnetic wave absorbent material.
Background technology
Radio frequency identification is a kind of contactless automatic identification technology utilizing radio frequency, and electronic tag (RFID) system is generally made up of read write line and electronic tag, and read write line is by the information in less radio-frequency reading tag.Rfid system operates mainly in the wave bands such as low frequency, high frequency, ultrahigh frequency and microwave.Super high frequency radio frequency recognition technology has reading distance far away, obtain the very big concern of modern thing union reason and traffic administration, inevitable and Metal Contact in many applications, when but the passive superelevation RFID subtab of class dipole uses metal surface, its impedance matching, radiation efficiency and radiation direction all can change, and cause label effectively not read.
For above situation, some domestic RFID producers devise some anti-metal RFID label tag that can be used for metal surface, the ultrahigh frequency anti-metal tag of the rich nano-electron in Jiangsu mainly adopts the method for padded electronic tag to reduce the impact of metal pair label, a dielectric layer is increased between electronic tag and metal, electronic tag, away from metal surface, realizes reducing metal environment to the impact of label.
Number of patent application be 201320376139 utility model disclose a kind of flexible ultrahigh-frequency anti-metal electronic tag, the patent describe a kind of structural design of ultrahigh frequency electronic tag of flexibility, utilize the high loss characteristic of absorbing material, reduce metal environment and electronic tag is disturbed.
These anti-metal electronic tag ubiquities of above method design can only be used for metal environment, are difficult to the user demand meeting the multiple environment of electronic tag of the same race.
Utility model content
The utility model object is to provide a kind of for ultrahigh frequency anti-metal electronic tag, by high magnetic permeability design of absorbing material, complete the impedance of high magnetic permeability absorbing material and antenna and the impedance conjugate impedance match of chip, the method is simply direct, the applicable multiple environment of ultrahigh frequency anti-metal electronic tag of the method design.
The utility model passes through high magnetic permeability, low-loss absorbing material as impedance matching layer, by designing the impedance of impedance matching layer and adjusting the impedance of antenna, realize the impedance of matching layer and antenna and the impedance conjugate impedance match of chip, finally realize the normal read-write of ultrahigh frequency electronic tag.
A kind of ultrahigh frequency anti-metal electronic tag, comprise electronic tag and high magnetic permeability suction ripple layer, described electronic tag comprises antenna and chip, contain high magnetic permeability in described high magnetic permeability suction ripple layer, (complex permeability is made up of magnetic permeability real part and imaginary part in low-loss, so-called high magnetic permeability is exactly that magnetic permeability real part is higher, it is smaller that low-loss is exactly magnetic permeability imaginary part) absorbing material, the impedance of described absorbing material and antenna and the impedance conjugate impedance match of chip.
As further improvement of the utility model, described high magnetic permeability suction ripple layer is two-sided is covered with double faced adhesive tape.
The thickness of described double faced adhesive tape and material can be independent of one another.
Described high magnetic permeability inhales the thickness of ripple layer between 0.5-3.0mm.
The utility model adopts high magnetic permeability absorbing material as impedance matching layer, utilize the impedance operator of high magnetic permeability absorbing material, eliminate the electromagnetic eddy that electromagnetic wave produces in metal surface, by Antenna Design, complete the impedance matching of absorbing material, antenna and chip, realize the normal read-write of ultrahigh frequency anti-metal tag.
The beneficial effects of the utility model are, this ultrahigh frequency anti-metal electronic tag highly versatile, not only may be used for metal surface, and may be used for nonmetallic surface, has the advantages such as good anti-metal, function admirable, good directionality, reading distance.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model.
Wherein: 1-electronic tag, 2-high magnetic permeability inhales ripple layer, 3-double faced adhesive tape.
Embodiment
Below in conjunction with accompanying drawing, the technical scheme that the utility model relates to is described in further detail, but not as restriction the utility model being related to scheme, the technical scheme that any one can realize the utility model object all forms a part of the present utility model.
As shown in Figure 1, a kind of ultrahigh frequency anti-metal electronic tag (105 × 50 × 3.2mm) with absorbing material of the present embodiment design.
Described ultrahigh frequency anti-metal electronic tag comprises electronic tag 1 and high magnetic permeability inhales ripple layer 2, described electronic tag comprises antenna and Alien H3 chip, described high magnetic permeability suction ripple layer 2 is two-sided is covered with double faced adhesive tape 3, it is JNZZ-CAB-30 paster that described high magnetic permeability inhales ripple layer 2, size 105 × 50 × 3.0mm; Double faced adhesive tape 3 is 3M467; High magnetic permeability is inhaled ripple layer 2 both sides double faced adhesive tape 3 be pasted together, then electronic tag 1 is attached to by double faced adhesive tape 3 surface that high magnetic permeability inhales ripple layer 2.The impedance that high magnetic permeability inhales ripple layer 2 is the impedance of 2.7+20j, Alien H3 chip is 27-199.8j, and the impedance of antenna is 24.3+179.8j.
This anti-metal electronic tag is attached to best reading distance 7.5m on metal, is attached to the best distance that reads on plastics and, for 6.5m, is applicable to frequency range 860 ~ 960MHz.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (4)
1. a ultrahigh frequency anti-metal electronic tag, it is characterized in that, comprise electronic tag (1) and inhale ripple layer (2), described electronic tag (1) comprises antenna and chip, containing absorbing material, the impedance of described absorbing material and antenna and the impedance conjugate impedance match of chip in described suction ripple layer (2).
2. ultrahigh frequency anti-metal electronic tag as claimed in claim 1, it is characterized in that, described suction ripple layer (2) is two-sided is covered with double faced adhesive tape (3).
3. ultrahigh frequency anti-metal electronic tag as claimed in claim 2, it is characterized in that, thickness and the material of described double faced adhesive tape (3) are independent of one another.
4. the ultrahigh frequency anti-metal electronic tag as described in above-mentioned arbitrary claim, is characterized in that, the thickness of described suction ripple layer (2) is between 0.5-3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420645276.0U CN204087242U (en) | 2014-11-03 | 2014-11-03 | A kind of ultrahigh frequency anti-metal electronic tag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420645276.0U CN204087242U (en) | 2014-11-03 | 2014-11-03 | A kind of ultrahigh frequency anti-metal electronic tag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204087242U true CN204087242U (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420645276.0U Active CN204087242U (en) | 2014-11-03 | 2014-11-03 | A kind of ultrahigh frequency anti-metal electronic tag |
Country Status (1)
| Country | Link |
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| CN (1) | CN204087242U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110084351A (en) * | 2019-04-17 | 2019-08-02 | 永道无线射频标签(扬州)有限公司 | A kind of high frequency NFC label for anti-metal medium |
-
2014
- 2014-11-03 CN CN201420645276.0U patent/CN204087242U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110084351A (en) * | 2019-04-17 | 2019-08-02 | 永道无线射频标签(扬州)有限公司 | A kind of high frequency NFC label for anti-metal medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |