CN103811873A - Tag antenna and corresponding optical disk - Google Patents
Tag antenna and corresponding optical disk Download PDFInfo
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- CN103811873A CN103811873A CN201410041083.9A CN201410041083A CN103811873A CN 103811873 A CN103811873 A CN 103811873A CN 201410041083 A CN201410041083 A CN 201410041083A CN 103811873 A CN103811873 A CN 103811873A
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- ear structure
- label antenna
- loop aerial
- hollow interlayer
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- 230000003287 optical effect Effects 0.000 title abstract 2
- 239000011229 interlayer Substances 0.000 claims description 30
- 238000010276 construction Methods 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 abstract 2
- 238000005516 engineering process Methods 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 235000021393 food security Nutrition 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Abstract
Disclosed are a tag antenna and corresponding optical disk. The tag antenna comprises a loop antenna with an opening for setting a chip, a first lug structure and a second lug structure are arranged on two sides of the opening of the loop antenna, a first hollow barrier layer is arranged between the loop antenna and the first lug structure, and a second hollow barrier layer is arranged between the loop antenna and the second lug structure. By the aid of the tag antenna, reading distance can be greatly increased.
Description
Technical field
The present invention relates to field of antenna, relate in particular to a kind of label antenna and corresponding CD.
Background technology
Radio-frequency (RF) identification (Radio Frequency Identification, RFID) technology is a kind of automatic identification technology of rising in recent years.The basic module of its system comprises RFID electronic tag, rfid interrogator and antenna.Wherein, antenna is a kind of device that the radiofrequency signal power of wireless set is received or radiate with electromagnetic wave form.In rfid system, antenna is divided into two kinds of label antenna and reading and writing device antennas.The target of label antenna is that transmission is maximum can turnover label chip: when transmitting, be electromagnetic wave by high frequency current transitions; When reception, electromagnetic wave is converted to high-frequency current.
Current RFID technology has been widely used in multiple fields such as logistics, retail, military affairs, city management, taking care of books, food security, tourism.And in the field such as taking care of books, tourism, often RFIDUHF label and CD mailing need to be used in combination, reach publicity, object false proof and that identify safely.
Due to the restriction of the shape of CD own and volume size, conventionally RFID label antenna is made to annular at present, be fixed on the territory, annular non-data regions of CD, but the impedance of small loop antenna is difficult to adjusting, be difficult to regulate according to different chips.
And RFID label antenna is to be abutted against to receive that the electromagnetic wave of certain energy carrys out work, these electromagnetic waves have RFID reader to send by reader antenna, and electromagnetic wave is decayed in air, therefore longer-distance time, because electromagnetic wave is strong not, be not enough to allow RFID label antenna carry out work.And disk inner also has certain metal ingredient, easily by electro-magnetic wave absorption, receive electromagnetic wave thereby affect RFID label antenna, affect reading distance.
Summary of the invention
The problem that the present invention solves is to provide a kind of label antenna and corresponding CD, can significantly improve reading distance.
For addressing the above problem, the embodiment of the present invention provides a kind of label antenna, comprise: loop aerial, described loop aerial has the opening for chip is set, and on the loop aerial of described opening both sides, be provided with the first ear structure and the second ear structure, between described loop aerial and the first ear structure, there is the first hollow interlayer, between described loop aerial and the second ear structure, there is the second hollow interlayer.
Optionally, described the first ear structure is the concentric fan annular that radius is identical with the second ear structure.
Optionally, the angular range of described the first hollow interlayer and the second hollow interlayer is 30 degree～50 degree.
Optionally, the angular range of described the first ear structure and the second ear structure is 60 degree～80 degree.
Optionally, the external diameter of described the first ear structure, the second ear structure is 20mm～25mm, and internal diameter is 16mm～19mm.
Optionally, the external diameter of described loop aerial is 13mm～15mm, and internal diameter is 9mm～12mm.
Optionally, described the first ear structure and the second ear structure are with the line mirror image symmetry in described opening and the center of circle.
Optionally, described the first hollow interlayer and the second hollow interlayer are enclosed construction.
The embodiment of the present invention also provides a kind of CD, comprising: CD body, label antenna, described CD body comprises He Fei data field, data field, on the non-data field of the non-read/write surface for read of CD, is provided with described label antenna.
Optionally, the first ear structure of described label antenna, the second ear structure are positioned at the position of the non-read/write surface for read of CD corresponding to data field.
Compared with prior art, the technical program has the following advantages:
By be provided with the first ear structure and the second ear structure on loop aerial, between described loop aerial and the first ear structure, there is the first hollow interlayer, between described loop aerial and the second ear structure, there is the second hollow interlayer.Utilize described label antenna can significantly improve reading distance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the label antenna of the embodiment of the present invention;
Fig. 2 is the structural representation of the CD with label antenna of the embodiment of the present invention;
Fig. 3 is the test result figure of the label antenna of the embodiment of the present invention.
Embodiment
Because the reading distance of existing label antenna is less, the embodiment of the present invention provides a kind of label antenna and corresponding CD, described label antenna is loop aerial, described loop aerial has the opening for chip is set, and on the loop aerial of described opening both sides, be provided with the first ear structure and the second ear structure, between described loop aerial and the first ear structure, there is the first hollow interlayer, between described loop aerial and the second ear structure, there is the second hollow interlayer.Utilize described label antenna can significantly improve reading distance.
Below in conjunction with accompanying drawing, by specific embodiment, technical scheme of the present invention is carried out to clear, complete description.
Please refer to Fig. 1, for the structural representation of the label antenna of the embodiment of the present invention, described label antenna 1 comprises loop aerial 2, described loop aerial 2 has the opening 3 for chip is set, and on the loop aerial 2 of described opening 3 both sides, be provided with the first ear structure 4 and the second ear structure 6, between described loop aerial 2 and the first ear structure 4, there is the first hollow interlayer 5, between described loop aerial 2 and the second ear structure 6, there is the second hollow interlayer 7.
Described loop aerial 2 is circular or oval, and in the present embodiment, described loop aerial 2 is circular.The external diameter R1 of described loop aerial 2 is 13mm～15mm, and internal diameter R2 is 9mm～12mm.
In the present embodiment, described the first ear structure 4 is the concentric fan annular that radius is identical with the second ear structure 6.The external diameter R4 of described the first ear structure 4, the second ear structure 6 is 20mm～25mm, and internal diameter R3 is 16mm～19mm.The angle [alpha] scope of described the first hollow interlayer 5 and the second hollow interlayer 7 is 30 degree～50 degree, and the angle beta scope of described the first ear structure 4 and the second ear structure 6 is 60 degree～80 degree.
In the present embodiment, described the first ear structure 4 and the second ear structure 6 are with the line mirror image symmetry in described opening 3 and the center of circle, and described the first ear structure 4 and the second ear structure 6 center of circle symmetries.In other embodiments, described the first ear structure and the second ear structure are only with the line mirror image symmetry in described opening and the center of circle, and described the first ear structure and not center of circle symmetry of the second ear structure.
In other embodiments, described the first ear structure and the second ear structure can be also square or oval fan annular etc.
By regulating width, angle, shape and the first hollow interlayer of described the first ear structure and the second ear structure, the area of the second hollow interlayer, the magnetic flux of described the first hollow interlayer, the second hollow interlayer is mated with magnetic flux and the impedance phase of the metal level of CD with impedance, can regulate the reading distance of label antenna.
Between described loop aerial 2 and the first ear structure 4, form the first hollow interlayer 5 of enclosed construction, between described loop aerial 2 and the second ear structure 6, form the second hollow interlayer 7 of enclosed construction.In other embodiments, described the first ear structure and the second ear structure also can have opening, and making the first hollow interlayer and the second hollow interlayer is non-enclosed construction.
The embodiment of the present invention also provides a kind of CD with described label antenna, please also refer to Fig. 1 and Fig. 2, described CD comprises: CD body 9, label antenna 1, described CD body 9 comprises He Fei data field, data field, is provided with described label antenna 1 on the non-data field of CD body 9 non-read/write surface for read.
In the present embodiment, the loop aerial 2 of described label antenna 1 sticks on the non-data field of CD body 9 non-read/write surface for read, and the first ear structure 4, second ear structure 6 parts of described label antenna are positioned at the position of the non-read/write surface for read of CD corresponding to data field.
Because the surface, data field of CD has metal level, utilize the be coupled metal level of described data field of the first ear structure 4, the second ear structure 6, using described metal level as an auxiliary antenna, and by regulating described the first ear structure and width, angle, shape and the first hollow interlayer of the second ear structure, the area of the second hollow interlayer, can significantly improve reading distance.In the present embodiment, utilizing the reading distance of label antenna is as described in Figure 1 0.3～0.5m, and the reading distance that is positioned at the label antenna on CD is as described in Figure 2 2.0～2.5m, by described label antenna is arranged on CD and can greatly increases reading distance.
In other embodiments, the first ear structure of described label antenna, the second ear structure are all positioned at the position of the non-read/write surface for read of CD corresponding to data field.
In other embodiments, the loop aerial of described label antenna, the first ear structure, the second ear structure also can be positioned on the non-data field of the non-read/write surface for read of CD body completely.
Please refer to Fig. 3, is the resolution chart of the label antenna of the embodiment of the present invention, and wherein ordinate is return loss, and abscissa is echo frequency.In the present embodiment, because the RFID frequency of described CD is 915MHz, and described label antenna is less in the local return loss near 915MHz, and therefore the reading distance of described label antenna is larger.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can utilize method and the technology contents of above-mentioned announcement to make possible variation and modification to technical solution of the present invention; therefore; every content that does not depart from technical solution of the present invention; any simple modification, equivalent variations and the modification above embodiment done according to technical spirit of the present invention, all belong to the protection range of technical solution of the present invention.
Claims (10)
1. a label antenna, it is characterized in that, comprise: loop aerial, described loop aerial has the opening for chip is set, and on the loop aerial of described opening both sides, be provided with the first ear structure and the second ear structure, between described loop aerial and the first ear structure, there is the first hollow interlayer, between described loop aerial and the second ear structure, there is the second hollow interlayer.
2. label antenna as claimed in claim 1, is characterized in that, described the first ear structure is the concentric fan annular that radius is identical with the second ear structure.
3. label antenna as claimed in claim 2, is characterized in that, the angular range of described the first hollow interlayer and the second hollow interlayer is 30 degree～50 degree.
4. label antenna as claimed in claim 2, is characterized in that, the angular range of described the first ear structure and the second ear structure is 60 degree～80 degree.
5. label antenna as claimed in claim 1, is characterized in that, the external diameter of described the first ear structure, the second ear structure is 20mm～25mm, and internal diameter is 16mm～19mm.
6. label antenna as claimed in claim 1, is characterized in that, the external diameter of described loop aerial is 13mm～15mm, and internal diameter is 9mm～12mm.
7. label antenna as claimed in claim 1, is characterized in that, described the first ear structure and the second ear structure are with the line mirror image symmetry in described opening and the center of circle.
8. label antenna as claimed in claim 1, is characterized in that, described the first hollow interlayer and the second hollow interlayer are enclosed construction.
9. a CD, is characterized in that, comprising: CD body, label antenna as described in claim 1～8 any one, described CD body comprises He Fei data field, data field, on the non-data field of the non-read/write surface for read of CD, is provided with described label antenna.
10. CD as claimed in claim 9, is characterized in that, the first ear structure of described label antenna, the second ear structure are positioned at the position of the non-read/write surface for read of CD corresponding to data field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410041083.9A CN103811873B (en) | 2014-01-28 | 2014-01-28 | label antenna and corresponding CD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410041083.9A CN103811873B (en) | 2014-01-28 | 2014-01-28 | label antenna and corresponding CD |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103811873A true CN103811873A (en) | 2014-05-21 |
| CN103811873B CN103811873B (en) | 2016-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410041083.9A Expired - Fee Related CN103811873B (en) | 2014-01-28 | 2014-01-28 | label antenna and corresponding CD |
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| CN (1) | CN103811873B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713426A (en) * | 2018-11-19 | 2019-05-03 | 北京计算机技术及应用研究所 | A kind of RFID label antenna suitable for vehicle glass surface |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100378859C (en) * | 2004-07-13 | 2008-04-02 | 富士通株式会社 | Radio tag antenna structure for an optical recording medium and a case for an optical recording medium with a radio tag antenna |
| CN103181024A (en) * | 2010-06-17 | 2013-06-26 | 斯马特拉克Ip有限公司 | Method for manufacturing an autocompensating antenna structure by etching |
| CN203813029U (en) * | 2014-01-28 | 2014-09-03 | 杭州电子科技大学 | Tag antenna and corresponding optical disc |
-
2014
- 2014-01-28 CN CN201410041083.9A patent/CN103811873B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100378859C (en) * | 2004-07-13 | 2008-04-02 | 富士通株式会社 | Radio tag antenna structure for an optical recording medium and a case for an optical recording medium with a radio tag antenna |
| CN103181024A (en) * | 2010-06-17 | 2013-06-26 | 斯马特拉克Ip有限公司 | Method for manufacturing an autocompensating antenna structure by etching |
| CN203813029U (en) * | 2014-01-28 | 2014-09-03 | 杭州电子科技大学 | Tag antenna and corresponding optical disc |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713426A (en) * | 2018-11-19 | 2019-05-03 | 北京计算机技术及应用研究所 | A kind of RFID label antenna suitable for vehicle glass surface |
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| Publication number | Publication date |
|---|---|
| CN103811873B (en) | 2016-06-15 |
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Application publication date: 20140521 Assignee: Nanjing suneng Jinzhi Engineering Technology Co.,Ltd. Assignor: HANGZHOU DIANZI University Contract record no.: X2020330000051 Denomination of invention: Tag antenna and corresponding optical disk Granted publication date: 20160615 License type: Common License Record date: 20200709 |
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