CN102880898A - Ultrahigh frequency (UHF) electronic tag capable of covering UHF full frequency range and sharing with free space and metal surface - Google Patents
Ultrahigh frequency (UHF) electronic tag capable of covering UHF full frequency range and sharing with free space and metal surface Download PDFInfo
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- CN102880898A CN102880898A CN2011101953913A CN201110195391A CN102880898A CN 102880898 A CN102880898 A CN 102880898A CN 2011101953913 A CN2011101953913 A CN 2011101953913A CN 201110195391 A CN201110195391 A CN 201110195391A CN 102880898 A CN102880898 A CN 102880898A
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Abstract
The invention mainly introduces an ultrahigh frequency (UHF) electronic tag consisting of multilayered antennas, which can cover a UHF full frequency range and realize remote reading in a free space and on a metal surface. The tag comprises a base material, a folding metal surface, an assistant antenna radiating surface, an ultrahigh frequency radio frequency identification device (RFID) chip. When the tag is placed in the free space (or on a nonmetallic surface), the electromagnetic radiation is mainly concentrated on a positive side and a reverse side of the tag, the equivalent current distribution of the electromagnetic radiation is equivalent to a wide edge folding vibrator. When the tag is directly pasted to the metal surface, the electromagnetic radiation is mainly concentrated on two bending side faces, the current distribution of the electromagnetic radiation is equivalent to a microstrip antenna, so that the tag can reach the high-efficiency radiation at the metal surface and the nonmetallic surface. The assistant antenna radiating surface can improve the radiation efficiency, adjust the degree of the radiation efficiency and an input impedance of the antenna; so that the the input impedances of the tag under two conditions of the free space and the metal surface can achieve a conjugate match with the impedance of the ultrahigh frequency RFID chip, so that the tag can be remotely read under two conditions. Meanwhile, an additional capacitance is introduced to the assistant antenna radiating surface, so the bandwidth of the antenna is improved, and the tag can be used in the UHF full frequency range.
Description
Technical field
This patent relates to a kind of ultrahigh frequency electronic tag, specifically relates to a kind ofly being formed, covering the UHF full frequency band, can both be realized the ultrahigh frequency electronic tag that reads at a distance in free space and metal surface by stacked antenna.
Background technology
Radio-frequency (RF) identification (Radio Frequency Identification, RFID) technology is a kind of non-contact automatic identification technology that utilizes radio communication to realize.The RFID label has the characteristics such as volume is little, capacity is large, the life-span is long, reusable, can support fast reading and writing, non-visual recognition, mobile identification, multiple goal identification, status and long-term follow management.RFID has important application in logistics management, false proof, transport information, industrial automation, this technology combines with technology such as internet, communications, can realize tracking and the information sharing of article in the global range, and RFID has become the focus of IT industry circle.
Rfid system mainly is comprised of electronic tag, reader and antenna.Electronic tag is the important component part of rfid system, and electronic tag miscellaneous has become the study hotspot of RFID.
Because electromagnetic wave can be by metallic reflection, thereby cause the ordinary electronic label can't be correctly validated in the metal surface, for the management with the recognizate of various metal surfaces, such as metal assets, large pressurized vessel steel cylinder, large shape etc., just need to adopt anti-metal tag.Yet general metal label reads apart from limited free space.Along with the development of RFID industry, so that electronic tag is all realized reading at a distance in various complicated environments for use.
Because various countries, each department exist different to defining of uhf band RFID application, for example: Unite States Standard (USS) is 902MHz～928MHz, Europe is 865MHz～868MHz, and Japan is 950MHz～956MHz, and China is 840MHz～845MHz and two frequency ranges of 920MHz～925MHz.Therefore, the electronic tag that design UHF RFID full frequency band covers makes electronic tag have versatility to satisfy the requirement of countries in the world, is a target of electronic tag design.Yet general anti-metal tag narrow bandwidth is difficult to all realize reading at a distance on the RFID full frequency band.
The patent content of this project helps to solve the above problems.
Patent content
The content of this patent provides a kind of high reliability, passive ultrahigh frequency electronic tag economical and practical, simple in structure for metal surface and free space (nonmetallic surface), UHF full frequency band exactly.
This patent in order to achieve the above object, the technical scheme that adopts provides a kind of passive ultrahigh frequency electronic tag that is comprised of stacked antenna.Label comprises bending metal surface 3, base material 4, aerial radiation auxiliary surface 1 and places ultrahigh frequency chip 2 on the aerial radiation auxiliary surface 1.The both positive and negative polarity of ultrahigh frequency chip 2 links to each other with antenna auxiliary radiation face 1 by reverse packaging process.Aerial radiation radiating surface 1 comes mutual energy with bending metal surface 2 by tight coupling, the bandwidth of antenna that had broadening of aerial radiation auxiliary surface 1.When label was attached to nonmetallic surface, the distribution of current of label antenna was similar to the broadside folded dipole, can realize the high-level efficiency omnidirectional radiation in free space; And when label was attached to the metal surface, the distribution of current of label antenna was similar to microstrip antenna, thereby had realized directed high-level efficiency radiation.
The size of described aerial radiation auxiliary surface less than substrate plane size.
The result of use of the electronic tag of this patent under various environments for use, various frequency range is remarkable.The base material 4 that this patent adopts be plastics, pottery, and FR4, polytetrafluoroethylmaterial material such as is easy to process, cost is low, specific inductive capacity is stable, dielectric loss is low at the characteristics.
The bending metal surface adopts common metal material to get final product, such as aluminium foil.
Plastics, pottery, FR4, the application of polytetrafluoroethylmaterial material and aluminium-foil paper greatly reduces production cost, has simplified the one-tenth production. art, for follow-up large-scale production has brought facility.
Description of drawings
Fig. 1 is the structural representation of aerial radiation auxiliary surface of the electronic tag of this patent electronic tag one embodiment;
Fig. 2 is the structural representation of bending metal surface of the electronic tag of this patent electronic tag one embodiment;
Fig. 3 is the structural representation of base material of the electronic tag of this patent electronic tag one embodiment;
Fig. 4 is the general structure schematic diagram of the electronic tag of this patent electronic tag one embodiment.
Implementation
Illustrate further the architectural feature of this patent RFID label below in conjunction with accompanying drawing.
The RFID label of this patent comprises: base material 4 is of a size of 95mm*25mm*3mm, and bending metal surface 3 adopts the back side to contain the aluminium foil of glue, and aluminium foil is of a size of 220mm*25mm, the end face along base material 4 back side symmetrical folds to base material 4.
Antenna auxiliary radiation face 1 comprises two-layer, and the upper strata is the metallic film of 0.01mm, and lower floor is the PET film of 0.2mm.Ultrahigh frequency chip 2 is fixed on the antenna auxiliary radiation face 1 by reverse packaging process.Antenna auxiliary radiation face 1 is fixed to the front of bending metal surface 3 by glue.
In this money RFID label, the impedance of antenna can be adjusted to a most suitable value by the size of adjusting antenna auxiliary radiation face 1, form conjugate impedance match with chip, read at a distance effect to reach.
In this money RFID label, adjust the width of base material and aluminium foil, can improve the radiation efficiency of antenna, thereby improve the distance that reads of electronic tag.
In the present embodiment; cover on the surface of RFID label insulating paint as diaphragm to prevent the bending metal surface 3 of UHF electronic tag; antenna auxiliary radiation face 1 contacts with external environment and oxidation occurs; the phenomenons such as corrosion are to guarantee the use of the long-term stability of RFID electronic tag in applied environment.
Claims (4)
1. ultrahigh frequency electronic tag that forms, covers the UHF full frequency band, can both realize reading at a distance in free space and metal surface by stacked antenna, it is characterized in that comprising: it is comprised of antenna auxiliary radiation face, bending metal surface, ultrahigh frequency chip and base material, chip is connected with antenna auxiliary radiation face, antenna auxiliary radiation face places on the bending metal surface, and isolated by one deck very thin dielectric material and antenna auxiliary radiation face; Bending metal surface and base material are conformal, are attached to substrate surface.
2. ultrahigh frequency electronic tag according to claim 1 is characterized in that the size of aerial radiation auxiliary surface is less than the size of substrate plane.
3. ultrahigh frequency electronic tag according to claim 1 is characterized in that base material by plastics, pottery, and FR4, polytetrafluoroethylmaterial material forms, and its thickness is greater than 0. 5 millimeters.
4. ultrahigh frequency electronic tag according to claim 1 is characterized in that the material of bending metal surface is comprised of metal materials such as gold, silver, copper, aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101953913A CN102880898A (en) | 2011-07-13 | 2011-07-13 | Ultrahigh frequency (UHF) electronic tag capable of covering UHF full frequency range and sharing with free space and metal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101953913A CN102880898A (en) | 2011-07-13 | 2011-07-13 | Ultrahigh frequency (UHF) electronic tag capable of covering UHF full frequency range and sharing with free space and metal surface |
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| Publication Number | Publication Date |
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| CN102880898A true CN102880898A (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101953913A Pending CN102880898A (en) | 2011-07-13 | 2011-07-13 | Ultrahigh frequency (UHF) electronic tag capable of covering UHF full frequency range and sharing with free space and metal surface |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178342A (en) * | 2013-03-25 | 2013-06-26 | 浙江大学 | Small-sized anti-metal RFID (Radio Frequency Identification) tag antenna |
| CN103903048A (en) * | 2014-03-28 | 2014-07-02 | 西安交通大学 | Folding Peano fractal anti-metallic ultrahigh frequency RFID electronic tag |
| CN105718986A (en) * | 2016-01-08 | 2016-06-29 | 南京航空航天大学 | Anti-media ultrahigh-frequency RFID label |
| CN106022436A (en) * | 2016-05-12 | 2016-10-12 | 安徽晶太信息科技有限公司 | Butterfly transponder and production method thereof |
| CN106250968A (en) * | 2016-07-25 | 2016-12-21 | 成都德杉科技有限公司 | Electronic tag without antenna rf and method for designing thereof |
| WO2018123432A1 (en) * | 2016-12-30 | 2018-07-05 | 株式会社フェニックスソリューション | Booster antenna, communication ic unit equipped with booster antenna, and communication ic unit equipped with booster antenna having attached conductor |
| CN111416204A (en) * | 2019-01-07 | 2020-07-14 | 北京京东尚科信息技术有限公司 | Ultrahigh frequency electronic tag and radio frequency identification system comprising same |
| CN111882020A (en) * | 2020-08-04 | 2020-11-03 | 北京计算机技术及应用研究所 | A novel electronic tags for equipping intelligent management and control |
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| CN1637778A (en) * | 2003-12-25 | 2005-07-13 | 株式会社日立制作所 | Wireless IC tag, and method and apparatus for manufacturing the same |
| CN101197007A (en) * | 2007-12-28 | 2008-06-11 | 上海复旦微电子股份有限公司 | Ultra-high frequency electronic label for metallic material surface |
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| CN1637778A (en) * | 2003-12-25 | 2005-07-13 | 株式会社日立制作所 | Wireless IC tag, and method and apparatus for manufacturing the same |
| CN101243735A (en) * | 2005-08-09 | 2008-08-13 | 埃托特克德国有限公司 | Method of manufacturing pattern-forming metal structures on a carrier substrate |
| CN101197007A (en) * | 2007-12-28 | 2008-06-11 | 上海复旦微电子股份有限公司 | Ultra-high frequency electronic label for metallic material surface |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178342A (en) * | 2013-03-25 | 2013-06-26 | 浙江大学 | Small-sized anti-metal RFID (Radio Frequency Identification) tag antenna |
| CN103903048A (en) * | 2014-03-28 | 2014-07-02 | 西安交通大学 | Folding Peano fractal anti-metallic ultrahigh frequency RFID electronic tag |
| CN105718986A (en) * | 2016-01-08 | 2016-06-29 | 南京航空航天大学 | Anti-media ultrahigh-frequency RFID label |
| CN106022436A (en) * | 2016-05-12 | 2016-10-12 | 安徽晶太信息科技有限公司 | Butterfly transponder and production method thereof |
| CN106250968A (en) * | 2016-07-25 | 2016-12-21 | 成都德杉科技有限公司 | Electronic tag without antenna rf and method for designing thereof |
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| WO2018123432A1 (en) * | 2016-12-30 | 2018-07-05 | 株式会社フェニックスソリューション | Booster antenna, communication ic unit equipped with booster antenna, and communication ic unit equipped with booster antenna having attached conductor |
| CN111416204A (en) * | 2019-01-07 | 2020-07-14 | 北京京东尚科信息技术有限公司 | Ultrahigh frequency electronic tag and radio frequency identification system comprising same |
| CN111416204B (en) * | 2019-01-07 | 2023-04-07 | 北京京东乾石科技有限公司 | Ultrahigh frequency electronic tag and radio frequency identification system comprising same |
| CN111882020A (en) * | 2020-08-04 | 2020-11-03 | 北京计算机技术及应用研究所 | A novel electronic tags for equipping intelligent management and control |
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