WO2009131041A1 - 非接触icタグ - Google Patents
非接触icタグ Download PDFInfo
- Publication number
- WO2009131041A1 WO2009131041A1 PCT/JP2009/057550 JP2009057550W WO2009131041A1 WO 2009131041 A1 WO2009131041 A1 WO 2009131041A1 JP 2009057550 W JP2009057550 W JP 2009057550W WO 2009131041 A1 WO2009131041 A1 WO 2009131041A1
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- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- tag
- insulating substrate
- parasitic antenna
- contact
- Prior art date
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/20—Two collinear substantially straight active elements; Substantially straight single active elements
- H01Q9/24—Shunt feed arrangements to single active elements, e.g. for delta matching
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
- H01Q9/285—Planar dipole
Definitions
- the present invention relates to a non-contact IC tag.
- the present invention relates to a non-contact IC tag that is hardly affected by the communication characteristics of the metal member even when it is attached to a metal member.
- the present invention relates to a passive non-contact IC tag that uses radio waves (microwaves) as a transmission method.
- the non-contact IC tag includes an antenna circuit and an IC chip (an integrated circuit built-in chip) that holds predetermined information.
- the non-contact IC tag is positioned at a remote location, for example, attached to an object at a remote location, and between the non-contact IC tag and an external antenna at a location away from the non-contact IC tag. Thus, it is used for transmitting / receiving radio waves and acquiring information of one or a plurality of non-contact IC tags at a distant place.
- An information acquisition method using a non-contact IC tag has a feature that is not found in an information acquisition method using a barcode, and in particular, is being used in the field of article distribution.
- ⁇ Normal non-contact IC tags may be greatly affected by communication characteristics depending on the object to which they are attached.
- the object to be attached is metal
- normal communication between the non-contact IC tag attached thereto and the external antenna may be hindered. That is, when a non-contact IC tag is attached to a metal member, impedance matching between the IC chip of the non-contact IC tag and the antenna of the non-contact IC tag is likely to be greatly shifted.
- a second antenna is formed on a first antenna formed on a first insulating material via a second insulating material, and the length of the second antenna is set to a desired length.
- the IC tag can be communicated even on a metal member by adjusting to (Patent Document 1).
- Patent Document 3 An IC tag that suppresses the influence of metal and enables communication by inserting a foamed resin body between the metal member to which the IC tag is attached and the IC tag, and separating the IC tag and the metal member.
- Patent Document 4 An IC tag in which a magnetic material is inserted between the metal member to which the IC tag is attached and the IC tag to reduce the influence of the metal member and to improve communication characteristics
- each IC tag is used, communication is possible when the IC tag is attached to a metal member.
- the power supply to the IC chip is not sufficient and the communication distance is short.
- the IC tag (3) it is necessary to increase the thickness of the resin body in order to ensure a long communication distance. Therefore, there is a problem that it is difficult to reduce the thickness of the IC tag.
- the magnetic material is expensive, and therefore there is a problem that it is difficult to reduce the cost of the IC tag.
- an object of the present invention is to provide a non-contact IC tag that is inexpensive, thin, and secures a long communication distance even when it is attached to a metal member.
- an object of the present invention is to provide a non-contact IC tag that can be preferably applied to a passive non-contact IC tag using radio waves (microwaves) as a transmission method.
- One aspect (first aspect) of the contactless IC tag of the present invention for solving the above-described problems is as follows.
- An IC tag comprising: a first insulating substrate; an IC chip provided on one surface of the first insulating substrate; and a dipole antenna with a matching circuit electrically connected to the IC chip; A first parasitic antenna and a second parasitic antenna provided at intervals on the other surface of the insulating substrate, wherein the dipole antenna with a matching circuit includes two antenna portions positioned at intervals;
- the non-contact IC tag having two connection terminal portions that electrically connect each of the two antenna portions to the IC chip, and a matching circuit portion that electrically connects the two antenna portions, (1-a) Projected images of the first parasitic antenna and the second parasitic antenna on the one surface side of the first insulating substrate are the two antennas of the dipole antenna with a matching circuit.
- Another aspect (second aspect) of the non-contact IC tag of the present invention for solving the above-described problems is as follows.
- An IC tag comprising: a first insulating substrate; an IC chip provided on one surface of the first insulating substrate; and a dipole antenna with a matching circuit electrically connected to the IC chip; Two antenna parts having a first parasitic antenna and a second parasitic antenna provided on the other surface of the insulating substrate at intervals, wherein the dipole antenna with a matching circuit is positioned at an interval And a non-contact IC tag having two connection terminal portions that electrically connect each of the two antenna portions to the IC chip, and a matching circuit portion that electrically connects the two antenna portions.
- (2-a) Projected images of the first parasitic antenna and the second parasitic antenna on the one surface side of the first insulating substrate are the two antennas of the dipole antenna with a matching circuit. Overlapping at least part of each of the parts, (2-b) the first parasitic antenna and the second parasitic antenna are electrically connected by a connection portion; and (2-c) A projected image of the first parasitic antenna, the second parasitic antenna, and the connection portion on the one surface side of the first insulating substrate is a dipole with a matching circuit.
- a non-contact IC tag that does not overlap with the matching circuit portion of the antenna or overlaps only a part thereof.
- a projection image of the first parasitic antenna, the second parasitic antenna, and the connection portion on the one surface side of the first insulating substrate is the matching circuit. It is preferable not to overlap the matching circuit portion of the attached dipole antenna.
- the projected image of the first parasitic antenna, the second parasitic antenna, and the connection portion on the one surface side of the first insulating substrate is the IC chip. It is preferable that the two connection terminal portions of the dipole antenna with a matching circuit do not overlap.
- the first insulating substrate is made of a resin film.
- a second insulating substrate is laminated on the one surface side of the first insulating substrate.
- the first insulating substrate, the IC tag, the first parasitic antenna, the second parasitic antenna, and the connection portion are covered with resin. It is preferable that
- the substrate is coated with a resin.
- the non-contact IC tag of the present invention normal communication can be obtained between the non-contact IC tag and the reader / writer even if the non-contact IC tag is attached to a metal member.
- the non-contact IC tag of the present invention compared with the case where only the conventional non-contact IC tag is attached to the metal member, the electric power supplied to the IC chip used therein is increased. The communication distance between the chip and the reader / writer can be increased.
- the contactless IC tag of the present invention is particularly preferably applied to a passive contactless IC tag that uses radio waves (microwaves) as a transmission method.
- FIG. 1 is a schematic plan view of a dipole antenna surface with a matching circuit according to one embodiment (first embodiment) of a non-contact IC tag of the present invention.
- FIG. 2 is a cross-sectional view taken along the line II in FIG.
- FIG. 3 is a schematic plan view of an example of a parasitic antenna surface in the non-contact IC tag of FIG.
- FIG. 4 is a schematic plan view of another example of a parasitic antenna surface in the non-contact IC tag of FIG.
- FIG. 5 is a schematic plan view of still another example of a parasitic antenna surface in the non-contact IC tag of FIG.
- FIG. 6 is a schematic plan view of an example of a parasitic antenna surface according to another aspect (second aspect) of the contactless IC tag of the present invention.
- FIG. 7 is a schematic plan view of an example of a preferred embodiment of the parasitic antenna surface of the contactless IC tag of the present invention.
- FIG. 8 is a schematic plan view of another example of a preferred embodiment of the parasitic antenna surface of the non-contact IC tag of the present invention.
- FIG. 9 is a schematic plan view of still another example of a preferred embodiment of the parasitic antenna surface of the contactless IC tag of the present invention.
- FIG. 10 is a schematic plan view of still another example of the preferred embodiment of the parasitic antenna surface of the contactless IC tag of the present invention.
- FIG. 11 is a schematic plan view of still another example of a preferred embodiment of the parasitic antenna surface of the contactless IC tag of the present invention.
- 12 is a cross-sectional view taken along the line II of the non-contact IC tag of the present invention in which a second insulating substrate is laminated on the IC tag of the non-contact IC tag shown in FIG.
- FIGS. 1-10 An example of one aspect (first aspect) of the non-contact IC tag of the present invention is shown in FIGS.
- the non-contact IC tag T1 of the present invention includes a first insulating substrate 2 and an IC chip 3 and an IC provided on one surface (first surface) 2a of the first insulating substrate 2.
- a first IC provided at an interval between an IC tag Ta composed of a dipole antenna with a matching circuit 1 electrically connected to the chip 3 and the other surface (second surface) 2b of the first insulating substrate 2.
- the dipole antenna 1 with a matching circuit includes two antenna parts (a first antenna part 1a and a second antenna part 1b), and a first antenna part 1a and a second antenna part 1b, which are located at an interval.
- the two connection terminal portions 4 first connection terminal portion 4a and second connection terminal portion 4b that are electrically connected to the IC chip 3, and the first antenna portion 1a and the second antenna portion 1b are electrically connected.
- the matching circuit unit 5 is connected to each other.
- the non-contact IC tag T1 of the present invention having the above structure further satisfies the following conditions (1A), (1B), and (1C).
- the projected images of the first parasitic antenna 6 and the second parasitic antenna 7 on the first surface 2a side of the first insulating substrate 2 are the first antenna portions of the dipole antenna 1 with a matching circuit. It overlaps with at least a part of each of 1a and the 2nd antenna part 1b.
- the first parasitic antenna 6 and the second parasitic antenna 7 are electrically connected by the connecting portion 8.
- the projected images of the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8 on the first surface 2a side of the first insulating substrate 2 are the IC chip 3 and the matching circuit. It does not overlap the first connection terminal portion 4a and the second connection terminal portion 4b of the attached dipole antenna 1.
- the IC tag Ta includes an IC chip 3 storing information and a dipole antenna 1 with a matching circuit connected to the IC chip 3.
- IC tag Ta and the IC chip 3 commercially available non-contact IC tags and IC chips can be used.
- the IC tag Ta and the IC chip 3 are preferably passive non-contact IC tags and IC chips corresponding to radio waves (microwaves) as transmission methods, more preferably those conforming to the ISO / IEC 18000-6 standard, and ISO / IEC 18000- Those conforming to the 6 (Type C) standard are particularly preferable.
- the dipole antenna 1 with a matching circuit is an antenna to which a matching circuit unit 5 is added in order to appropriately transfer power between the IC chip 3 and the antenna.
- the dipole antenna 1 with a matching circuit has a connection terminal portion 4 for electrically connecting the antenna and the IC chip 3.
- the connection terminal portion 4 includes a first connection terminal portion 4 a connected to one end side of the IC chip 3 and a second connection terminal portion 4 b connected to the other end side of the IC chip 3.
- a known dipole antenna such as a meander line can be used.
- connection terminal portion 4 (first connection terminal portion 4a and second connection terminal portion 4b) electrically connects the IC strap 3 or an IC strap provided with an enlarged electrode on the IC chip and the dipole antenna 1 with a matching circuit. This is a terminal provided for this purpose.
- the shape and size of the connection terminal 4 varies depending on the dipole antenna with matching circuit 1 used.
- the connection terminal 4 is electrically connected between the IC chip 3 or the IC strap and the dipole antenna 1 with matching circuit. If what is obtained is good.
- the matching circuit 5 is a circuit provided so as to electrically connect the first antenna portion 1a and the second antenna portion 1b of the dipole antenna 1 with matching circuit.
- the matching circuit 5 is provided for the purpose of matching impedance when power is appropriately transferred between the IC chip 3 and the dipole antenna 1 with matching circuit.
- the matching circuit unit 5 includes not only the case where the first antenna unit 1a and the second antenna unit 1b are physically directly connected, but also the first connection terminal unit 4a and the second connection terminal unit 4b. May be physically connected directly. That is, the matching circuit unit 5 may electrically connect the first antenna unit 1a and the second antenna unit 1b via the first connection terminal unit 4a and the second connection terminal unit 4b.
- the first parasitic antenna 6 and the second parasitic antenna 7 are antennas that do not have a feeding point provided to assist the radio wave transmission / reception function of the matching-pole dipole antenna 1.
- FIG. 4 is a plan view of the second surface 2b of the first insulating substrate 2 in the non-contact IC tag T2 of the present invention.
- FIG. 5 is a plan view of the second surface 2b of the first insulating substrate 2 in the non-contact IC tag T3 of the present invention.
- Each of the non-contact IC tag T2 of FIG. 4 and the non-contact IC tag T3 of FIG. 5 is a dipole antenna with a matching circuit as seen in the plan view of the dipole antenna with a matching circuit of the non-contact IC tag T1 shown in FIG. It has a dipole antenna surface with a matching circuit having the same shape as the surface.
- Each of the non-contact IC tag T2 in FIG. 4 and the non-contact IC tag T3 in FIG. 5 has the shape of the parasitic antenna surface seen in the plan view of the parasitic antenna surface of the non-contact IC tag T1 shown in FIG. Have parasitic antenna surfaces of different shapes.
- the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8 are the non-contact shown in FIG.
- the following conditions (1A), (1B), and (1C) are satisfied.
- the projected images of the first parasitic antenna 6 and the second parasitic antenna 7 on the first surface 2a side of the first insulating substrate 2 are the first antenna portions of the dipole antenna 1 with a matching circuit. It overlaps with at least a part of each of 1a and the 2nd antenna part 1b.
- the first parasitic antenna 6 and the second parasitic antenna 7 are electrically connected by the connecting portion 8.
- the projected images of the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8 on the first surface 2a side of the first insulating substrate 2 are the IC chip 3 and the matching circuit. It does not overlap the connection terminal part 4 of the attached dipole antenna 1.
- FIG. 6 shows an example of another embodiment (second embodiment) of the non-contact IC tag of the present invention.
- FIG. 6 is a plan view of the second surface 2b of the first insulating substrate 2 in the non-contact IC tag T4 of the present invention.
- the non-contact IC tag T4 of FIG. 6 is a dipole antenna surface with a matching circuit having the same shape as the dipole antenna surface with a matching circuit seen in the plan view of the dipole antenna surface with a matching circuit of the non-contact IC tag T1 shown in FIG.
- the non-contact IC tag T4 in FIG. 6 has a parasitic antenna surface having a shape different from the shape of the parasitic antenna surface seen in the plan view of the parasitic antenna surface of the non-contact IC tag T1 shown in FIG.
- the first parasitic antenna 6, the second parasitic antenna 7, and the connecting portion 8 are as follows: (2A), (2B), and (2C) Is satisfied.
- the projected images of the first parasitic antenna 6 and the second parasitic antenna 7 on the first surface 2a side of the first insulating substrate 2 are the first antenna portions of the dipole antenna 1 with a matching circuit. It overlaps at least part of each of 1a and 2nd antenna part 2b.
- a projected image of the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8 on the first surface 2a side of the first insulating substrate 2 is a dipole antenna 1 with a matching circuit. It does not overlap with the matching circuit section 5 or overlaps only a part thereof.
- “Overlapping at least a part of each” in the condition (1A) and the condition (2A) means that the first insulating substrate 2 of the first parasitic antenna 6 and the second parasitic antenna 7 It is not necessary for the projected image on the surface 2a side to exactly match the first antenna portion 1a and the second antenna portion 1b of the dipole antenna with matching circuit 1, and at least one of the first antenna portions 1a. And at least part of the second antenna portion 1b.
- overlap with only part means a case where only a part of the matching circuit 5 overlaps with adjustment of impedance or the like.
- the upper limit value of the overlapping ratio in the case of overlapping with only one part varies depending on the shape of each antenna or the like constituting the non-contact IC tag, but is preferably 50% of the area in the entire plan view of the matching circuit unit 5.
- the non-contact IC tag of the present invention specifically described with the first aspect or the second aspect described above is attached to a metal member, it has an effect on the impedance fluctuation in the antenna of the IC tag. Can be made extremely small. As a result, the power necessary for driving the IC chip 3 can be supplied to the IC chip 3, and communication between the IC chip 3 and the reader / writer becomes possible.
- FIG. 7 to 11 show the shapes of the parasitic antenna surfaces of the contactless IC tags T5, T6, T7, T8, and T9 of the present invention. These are preferred embodiments of the contactless IC tag of the present invention.
- Each of the non-contact IC tags T5, T6, T7, T8 and T9 in FIGS. 7 to 11 is a dipole antenna surface with a matching circuit as seen in the plan view of the dipole antenna surface with a matching circuit of the non-contact IC tag T1 shown in FIG.
- a dipole antenna surface with a matching circuit having the same shape as the above.
- Each of the non-contact IC tags T5, T6, T7, T8, and T9 in FIGS. 7 to 11 is the shape of the parasitic antenna surface seen in the plan view of the parasitic antenna surface of the non-contact IC tag T1 shown in FIG. It has a parasitic antenna surface of a different shape.
- These preferred embodiments satisfy the following conditions (3C1) and (3C2).
- the projected image on the first surface 2a side does not overlap with the matching circuit unit 5 of the matching circuit-equipped dipole antenna 1 or overlaps only a part thereof.
- the non-contact IC tag of the present invention of these preferred embodiments has a longer communication distance.
- the shape of the first parasitic antenna 6 and the second parasitic antenna 7 is not particularly limited as long as the above conditions are satisfied.
- the overall size of the parasitic antenna including the first parasitic antenna 6, the second parasitic antenna 7 and the connection portion 8 is substantially the same as the overall size of the dipole antenna 1 with a matching circuit.
- the communication distance can be extended by setting the size of the parasitic antenna in accordance with the operating frequency.
- the dipole antenna 1 with matching circuit, the first parasitic antenna 6, the second parasitic antenna 7, and the connecting portion 8 are formed of an electric conductor.
- a conductive polymer such as a metal containing at least one metal such as gold, silver, copper, aluminum, zinc, nickel, tin, polyacetylene, polyparaphenylene, polyaniline, polythiophene, polyparaphenylene vinylene, Metal particles such as gold, silver, copper, aluminum, platinum, iron, nickel, tin, zinc, solder, stainless steel, ITO, ferrite, etc., alloys and metal oxides, and conductive carbon (including graphite)
- Thermosetting resins mainly composed of particles or conductive particles such as resin particles plated with the particles, phenoxy resins, epoxy resins, polyester resins, unsaturated polyester resins, polyester acrylates Resin, urethane acrylate resin, silicone accelerator Resins, etc. composed mainly of epoxy acrylate resin, may be used known ones such as a conductive ink comprising a photocurable resin such as UV curable resin.
- each of the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8 are preferably the same as each other.
- the first parasitic antenna 6, the second parasitic antenna 7, and the entire connection portion 8 may be formed integrally and seamlessly.
- Dipole antenna with matching circuit 1 first parasitic antenna 6, second parasitic antenna 7, and connection portion 8 are formed by etching a metal foil, a metal vapor deposition layer, an etching method, A known method such as a transfer method of cutting out on a circuit and sticking to a substrate, or a printing method of forming by printing using conductive ink can be used.
- FIG. 12 shows an example of another preferred embodiment of the non-contact IC tag of the present invention.
- FIG. 12 is a cross-sectional view taken along the line II in FIG. 1 of the non-contact IC tag T10 in which the second insulating substrate 9 is laminated on the IC tag Ta of the non-contact IC tag T1 shown in FIG. .
- the non-contact IC tag T10 has the second insulating substrate 9 on the upper surface of the dipole antenna with a matching circuit 1. Therefore, the non-contact IC tag T10 is attached to the target article via the second insulating substrate 9. Moreover, electrical insulation between the dipole antenna 1 with matching circuit and the target article is maintained. Thereby, the favorable communication function of non-contact IC tag T10 is obtained.
- the first insulating substrate 2 may be any substrate that can electrically insulate the IC tag Ta from the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8.
- the second insulating substrate 9 may be any substrate that can electrically insulate between the IC tag Ta and the article to be attached with the non-contact IC tag.
- a resin film is preferably used in terms of strength and weight.
- resin films melt extrusion molding of polyester, foamable polyester, polyolefin, polylactic acid, polyamide, polyesteramide, polyether, polystyrene, polyphenylene sulfide, polyether ester, polyvinyl chloride, poly (meth) acrylic ester, etc.
- the film may be an unstretched film, a uniaxially stretched film, or a biaxially stretched film.
- polyester film polyolefin film, and polyphenylene sulfide film are preferable from the viewpoint of price and mechanical properties.
- a biaxially stretched polyester film is preferably used because of its excellent balance of price, heat resistance, and mechanical properties.
- the thickness of the first insulating substrate 2 may be a thickness that can electrically insulate the IC tag Ta from the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8. From the viewpoint of flexibility and strength, the thickness is preferably 0.001 to 0.25 mm, more preferably 0.01 to 0.125 mm, and further preferably 0.02 to 0.075 mm. preferable.
- the thickness of the second insulating substrate 9 may be any thickness that can electrically insulate between the IC tag Ta and the target article. If the thickness is 0.1 mm or more, communication is possible even when the non-contact IC tag is attached to the metal member. If the thickness is 0.5 mm or more, it is possible to further increase the communication distance when the non-contact IC tag is attached to the metal member.
- the non-contact IC tag of the present invention when the second insulating substrate 9 is not laminated, the first insulating substrate 2, the IC tag Ta, the first parasitic antenna 6, the second parasitic antenna 7, and the connection
- the part 8 is preferably covered with a resin.
- the connecting portion 8 and the second insulating substrate 9 are preferably covered with a resin. That is, it is preferable that both sides of the non-contact IC tag of the present invention of the present invention are covered with a resin, or the whole is sealed with a resin.
- the communication distance and durability of the non-contact IC tag are improved by covering both surfaces with resin or sealing the whole with resin.
- Examples of the resin to be coated or sealed include polyester, foamable polyester, polyolefin, polylactic acid, polyamide, polyester amide, polyether, polystyrene, polyphenylene sulfide, polyether ester, polyvinyl chloride, and poly (meth) acrylic ester. Resins that can be melt-extruded are preferably used.
- a non-contact IC tag may be covered or sealed with a film obtained by processing these resins.
- the film may be an unstretched film, a uniaxially stretched film, or a biaxially stretched film.
- resins having a dielectric constant of 1 to 3 at the frequency of the used radio wave are preferably used.
- the dielectric constant is more preferably 2 to 3. If the resin has a dielectric constant of 1 to 3, the amount of power to the IC chip 3 can be improved while matching the impedance of the IC tag Ta. As a result, the communication distance when the non-contact IC tag is attached to the metal member can be further increased.
- Communication distance of IC tag Ta The communication distance is measured at 950 MHz. In a 3m anechoic chamber, the antenna is fixed at a position 90cm from the floor, and the second insulation of the created non-contact IC tag is placed in the center of a 120mm x 40mm x 0.5mm copper plate located at the same height. Measurement was performed by pasting the substrate side and moving the distance of the copper plate back and forth with respect to the reader / writer, and the communication distance was the distance at which communication between the reader / writer and the IC tag Ta could be made without error.
- a reader / writer (model: V750-BA50CO4-JP) manufactured by OMRON Corporation and an antenna (model: V750-HS01CA-JP) manufactured by OMRON Corporation were used as measuring instruments. The measurement was performed on five samples, and the average value of each measurement value was used as the communication distance of the IC tag Ta.
- Thickness of each member The sample was cut in the thickness direction with a microtome, and the cross section was observed using a 10,000 times SEM, and the thickness was measured. The measurement was performed for each item with one sample, and one field of view was measured at five points per sample, and the average value of each measured value was taken as the thickness of each member.
- the first insulating substrate 2 a 0.05 mm thick biaxially stretched polyethylene terephthalate film (Lumirror (registered trademark) S10 manufactured by Toray Industries, Inc.) was used. An aluminum layer having a thickness of 0.002 mm was formed on one surface of the first insulating substrate 2 using an electron beam (EB) vapor deposition method to obtain a metallized film.
- EB electron beam
- the resulting metallized film was wet etched to form a parasitic antenna having the shape shown in FIG.
- the projected images of the first parasitic antenna 6 and the second parasitic antenna 7 on the second insulating substrate 9 side are the first antenna portion 1a and the second antenna of the dipole antenna 1 with a matching circuit. It overlaps at least a part of each of the parts 1b.
- connection portion 8 of the parasitic antenna on the second insulating substrate 9 side overlaps the matching circuit portion 5 of the dipole antenna 1 with matching circuit.
- the projected images of the first parasitic antenna 6, the second parasitic antenna 7, and the connecting portion 8 on the second insulating substrate 9 side are the IC chip 3 of the UHF tag Ta and the dipole antenna 1 with a matching circuit.
- the first connection terminal portion 4a and the first connection terminal portion 4b do not overlap.
- the communication distance of the created non-contact IC tag T1 was 830 mm.
- a parasitic antenna having the shape shown in FIG. 4 was prepared by wet etching the metallized film prepared in Example 1.
- the produced metallized film and the second insulating substrate produced in Example 1 were attached in the same manner as in Example 1 to produce a non-contact IC tag T2.
- the communication distance of the created non-contact IC tag T2 was 690 mm.
- a parasitic antenna having the shape shown in FIG. 5 was created by wet etching the metallized film prepared in Example 1.
- the produced metallized film and the second insulating substrate produced in Example 1 were attached in the same manner as in Example 1 to produce a non-contact IC tag T3.
- the communication distance of the created non-contact IC tag T3 was 790 mm.
- a biaxially stretched polyethylene terephthalate film having a thickness of 0.05 mm (Lumirror (registered trademark) S10, manufactured by Toray Industries, Inc.) was used.
- An aluminum layer having a thickness of 0.002 mm was formed on one surface of the first insulating substrate 2 using an electron beam (EB) vapor deposition method to obtain a metallized film.
- the obtained metallized film was wet-etched to form a parasitic antenna having the shape shown in FIG.
- the projected images of the first parasitic antenna 6 and the second parasitic antenna 7 on the second insulating substrate 9 side are the first antenna portion 1a and the second antenna of the dipole antenna 1 with a matching circuit. It overlaps at least a part of each of the parts 1b.
- connection portion 8 of the parasitic antenna on the second insulating substrate 9 side shows the IC chip 3 of the UHF tag Ta and the first connection terminal portion 4a of the dipole antenna 1 with matching circuit and the second It overlaps with the connection terminal portion 4b.
- the matching circuit portion of the dipole antenna 1 with the matching circuit of the UHF tag Ta is obtained by projecting the first parasitic antenna 6, the second parasitic antenna 7 and the connection portion 8 onto the second insulating substrate 9 side. Does not overlap with 5, or overlaps only part of it.
- the communication distance of the created non-contact IC tag T4 was 880 mm.
- a biaxially stretched polyethylene terephthalate film having a thickness of 0.05 mm (Lumirror (registered trademark) S10, manufactured by Toray Industries, Inc.) was used.
- An aluminum layer having a thickness of 0.002 mm was formed on one surface of the first insulating substrate 2 using an electron beam (EB) vapor deposition method to obtain a metallized film.
- the obtained metallized film was wet etched to form a parasitic antenna having the shape shown in FIG.
- the projected images of the first parasitic antenna 6 and the second parasitic antenna 7 on the second insulating substrate 9 side are the first antenna portion 1a and the second antenna of the dipole antenna 1 with a matching circuit. It overlaps at least a part of each of the parts 1b.
- the projected image of the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8 on the second insulating substrate 9 side is the IC chip 3 of the UHF tag Ta and the dipole with matching circuit It does not overlap the first connection terminal portion 4a and the second connection terminal portion 4b of the antenna 1.
- the projected images of the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8 on the second insulating substrate 9 side do not overlap the matching circuit portion 5 of the dipole antenna 1 with a matching circuit. Or it overlaps with only a part of it.
- the communication distance of the produced non-contact IC tag T6 was 840 mm.
- the parasitic metal antenna having the shape shown in FIG. 10 was prepared by wet etching the metallized film prepared in Example 5.
- the produced metallized film and the second insulating substrate produced in Example 5 were attached in the same manner as in Example 5 to produce a non-contact IC tag T8.
- the communication distance of the created non-contact IC tag t10 was 800 mm.
- the parasitic metal antenna having the shape shown in FIG. 11 was prepared by wet etching the metallized film prepared in Example 5.
- the produced metallized film and the second insulating substrate produced in Example 5 were attached in the same manner as in Example 5 to produce a non-contact IC tag T9.
- the communication distance of the created non-contact IC tag T9 was 1340 mm.
- Example 7 after pasting the first insulating substrate 2, the IC tag Ta, the first parasitic antenna 6, the second parasitic antenna 7, the connecting portion 8, and the second insulating substrate 9,
- the first insulating substrate 2, the IC tag Ta, the first parasitic antenna 6, and the second parasitic power are formed of a 0.25 mm thick polyester resin and a 0.25 mm thick polyester resin shaped into a convex shape.
- a non-contact IC tag was produced in the same manner as in Example 7 except that the antenna 7, the connection portion 8, and the second insulating substrate 9 were covered.
- the communication distance of the created non-contact IC tag was 2450 mm.
- An acrylic plate having a thickness of 1 mm was used as the second insulating substrate 9, and a UHF tag (ALN-9540-Squiggle) Ta manufactured by Alien was attached thereto to form a non-contact IC tag.
- the communication distance of the produced non-contact IC tag was 110 mm.
- the first insulating substrate 2 As the first insulating substrate 2, a 0.05 mm thick biaxially stretched polyethylene terephthalate film (Lumirror S10, manufactured by Toray Industries, Inc.) was used. An aluminum layer having a thickness of 0.002 mm was formed on one surface of the first insulating substrate 2 using an electron beam (EB) vapor deposition method to obtain a metallized film.
- EB electron beam
- the resulting metallized film was wet-etched to form a parasitic antenna having the shape shown in FIG.
- the projected image of the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8 on the second insulating substrate 9 side is the IC chip 3 of the UHF tag Ta.
- a non-contact IC tag was created by pasting the dipole antenna 1 so as to overlap the first connection terminal portion 4a and the second connection terminal portion 4b of the dipole antenna 1 and the matching circuit portion 5.
- the created contactless IC tag could not communicate between reader / writer.
- the first insulating substrate 2 As the first insulating substrate 2, a 0.05 mm thick biaxially stretched polyethylene terephthalate film (Lumirror S10, manufactured by Toray Industries, Inc.) was used. An aluminum layer having a thickness of 0.002 mm was formed on one surface of the first insulating substrate 2 using an electron beam (EB) vapor deposition method to obtain a metallized film.
- EB electron beam
- the resulting metallized film was wet etched to form a parasitic antenna having the shape shown in FIG.
- the projected images of the first parasitic antenna 6 and the second parasitic antenna 7 on the second insulating substrate 9 side are the first antenna portion 1a and the second antenna of the dipole antenna 1 with a matching circuit. It overlaps at least a part of each of the parts 1b.
- the projected image of the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8 on the second insulating substrate 9 side is the IC chip 3 of the UHF tag Ta and the dipole with matching circuit It does not overlap the first connection terminal portion 4a and the second connection terminal portion 4b of the antenna 1.
- the communication distance of the created non-contact IC tag was 500 mm.
- the first insulating substrate 2 As the first insulating substrate 2, a 0.05 mm thick biaxially stretched polyethylene terephthalate film (Lumirror S10, manufactured by Toray Industries, Inc.) was used. An aluminum layer having a thickness of 0.002 mm was formed on one surface of the first insulating substrate 2 using an electron beam (EB) vapor deposition method to obtain a metallized film.
- EB electron beam
- the resulting metallized film was wet etched to form a parasitic antenna having the shape shown in FIG.
- the projected images of the first parasitic antenna 6 and the second parasitic antenna 7 on the second insulating substrate 9 side are the first antenna portion 1a and the second antenna of the dipole antenna 1 with a matching circuit. It overlaps at least a part of each of the parts 1b.
- the projected images of the first parasitic antenna 6 and the second parasitic antenna 7 on the second insulating substrate 9 side are the first of the IC chip 3 of the UHF tag Ta and the dipole antenna 1 with matching circuit. It does not overlap the first connection terminal portion 4a and the second connection terminal portion 4b.
- the projected images of the first parasitic antenna 6 and the second parasitic antenna 7 on the second insulating substrate 9 side do not overlap with the matching circuit unit 5 of the dipole antenna 1 with matching circuit, or Overlapping only part of it.
- the communication distance of the produced non-contact IC tag was 640 mm.
- a non-contact IC is formed by forming a parasitic antenna on the IC tag Ta as in the first aspect or the second aspect of the non-contact IC tag of the present invention. It can be seen that the communication distance when the tag is attached to the metal member is improved by 7 times or more.
- the first parasitic antenna 6, the second parasitic antenna 7, and the connection 8 are projected onto the first surface 2 a side of the first insulating substrate 2.
- Example 4 By contrast between Example 4 and Comparative Example 2, the projected images of the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8 on the first surface 2 a side of the first insulating substrate 2 are obtained.
- the non-contact IC tag By creating a non-contact IC tag so that it does not overlap with the matching circuit section 5 of the dipole antenna 1 with matching circuit of the IC tag Ta or only a part thereof, the non-contact IC tag becomes a metal member. Even when pasted and used, it can be seen that the non-contact IC tag has a sufficient communication function.
- the first parasitic antenna 6, the second parasitic antenna 7, and the connection portion 8 toward the first surface 2a of the first insulating substrate 2.
- the projected image does not overlap the IC chip 3 of the IC tag Ta and the first connection terminal portion 4a and the second connection terminal portion 4b of the matching circuit-attached dipole antenna 1, and the matching circuit-attached dipole antenna 1
- the contact distance when the non-contact IC tag is attached to the metal member can be further increased by creating the non-contact IC tag so that it does not overlap with the matching circuit section 5 or only part of it. It turns out that it is possible.
- Example 7 By comparing Example 7 with Comparative Examples 3 and 4, by creating a contactless IC tag so that the first parasitic antenna 6 and the second parasitic antenna 7 are electrically connected by the connection portion 8, It can be seen that the communication distance is improved when the non-contact IC tag is attached to the metal member.
- Example 7 By comparing Example 7 and Example 8, the first insulating substrate 2, the IC tag Ta, the first parasitic antenna 6, the second parasitic antenna 7, the connection portion 8, and the second insulating substrate 9. It can be seen that the communication distance when the non-contact IC tag is attached to the metal member is further improved by covering the surface with resin and creating a non-contact IC tag.
- the non-contact IC tag of the present invention is used, even if the IC tag is directly attached to a metal article, the communication function of the IC chip used therein is not hindered. According to the non-contact IC tag of the present invention, it is possible to efficiently manage metal articles.
Abstract
Description
(1-a)前記第1の無給電アンテナおよび前記第2の無給電アンテナの前記第1の絶縁基板の前記一方の面側への投影像が、前記整合回路付ダイポールアンテナの前記2つのアンテナ部のそれぞれの少なくとも一部に重なり、
(1-b)前記第1の無給電アンテナと前記第2の無給電アンテナが、接続部により電気的に接続され、かつ、
(1-c)前記第1の無給電アンテナ、前記第2の無給電アンテナ、および、前記接続部の前記第1の絶縁基板の前記一方の面側への投影像が、前記ICチップおよび前記整合回路付ダイポールアンテナの前記2つの接続端子部に重ならない非接触ICタグ。
(2-a)前記第1の無給電アンテナおよび前記第2の無給電アンテナの前記第1の絶縁基板の前記一方の面側への投影像が、前記整合回路付ダイポールアンテナの前記2つのアンテナ部のそれぞれの少なくとも一部に重なり、
(2-b)前記第1の無給電アンテナと前記第2の無給電アンテナが、接続部により電気的に接続され、かつ、
(2-c)前記第1の無給電アンテナ、前記第2の無給電アンテナ、および、前記接続部の前記第1の絶縁基板の前記一方の面側への投影像が、前記整合回路付ダイポールアンテナの前記整合回路部と重ならないか、あるいは、その一部のみと重なる非接触ICタグ。
ICタグTaの通信距離:
950MHzにおいて通信距離の測定を行う。3m法電波暗室内で、アンテナを床より90cmの位置に固定、同高さで正対する様に位置した120mm×40mm×0.5mm銅板の中央に、作成した非接触ICタグの第2の絶縁基板側を貼り付け、リーダー/ライターに対し銅板の距離を前後させることで測定を行い、リーダー/ライターとICタグTaとの通信をエラーなく出来る距離を通信距離とした。この測定において、測定器として、オムロン株式会社製リーダー/ライター(形式:V750-BA50CO4-JP)とオムロン社製アンテナ(型式:V750-HS01CA-JP)を用いた。測定は、5つのサンプルで行い、それぞれの測定値の平均値をICタグTaの通信距離とした。
サンプルをミクロトームにて厚み方向に切断し、その断面を1万倍のSEMを用いて観察し、厚みを測定した。測定は、各項目に対し、一つのサンプルで行い、一つのサンプル当たり、1視野5点の測定を行い、それぞれの測定値の平均値を各部材の厚みとした。
得られた金属化フィルムを湿式エッチングすることにより、図6に示される形状の無給電アンテナを形成した。図6に示される各寸法符号の値は、次の通りとした。a=8mm、b=97mm、c=43.5mm、d=4mm、e=10mm。これにより、第1の無給電アンテナ6、第2の無給電アンテナ7、および、接続部8が形成された。
得られた金属化フィルムを湿式エッチングすることにより、図8に示される形状の無給電アンテナを形成した。図8に示される各寸法符号の値は、次の通りとした。a=8mm、b=97mm、c=43.5mm、d=7mm、e=10mm。これにより、第1の無給電アンテナ6、第2の無給電アンテナ7、および、接続部8が形成された。
作成された非接触ICタグT6の通信距離は、840mmであった。
作成された非接触ICタグの通信距離は、110mmであった。
作成された非接触ICタグの通信距離は、640mmであった。
1a 整合回路付ダイポールアンテナの第1のアンテナ部
1b 整合回路付ダイポールアンテナの第2のアンテナ部
2 第1の絶縁基板
2a 第1の絶縁基板の一方の面(第1の面)
2b 第1の絶縁基板の他方の面(第2の面)
3 ICチップ
4 整合回路付ダイポールアンテナの接続端子部
4a 整合回路付ダイポールアンテナの第1の接続端子部
4b 整合回路付ダイポールアンテナの第2の接続端子部
5 整合回路付ダイポールアンテナの整合回路部
6 第1の無給電アンテナ
7 第2の無給電アンテナ
8 第1の無給電アンテナと第2の無給電アンテナを接続する接続部
9 第2の絶縁基板
a、b、c、d、e 各部位の寸法(長さ)
T1、T2、T3、T4、T5、T6、T7、T8、T9、T10 本発明の非接触ICタグ
Ta ICタグ
Claims (8)
- 第1の絶縁基板と、該第1の絶縁基板の一方の面に設けられたICチップと該ICチップに電気的に接続された整合回路付ダイポールアンテナとからなるICタグと、前記第1の絶縁基板の他方の面に間隔をおいて設けられた第1の無給電アンテナおよび第2の無給電アンテナとを備え、前記整合回路付ダイポールアンテナが、間隔をおいて位置する2つのアンテナ部と、該2つのアンテナ部のそれぞれを前記ICチップに電気的に接続する2つの接続端子部、および、該2つのアンテナ部を電気的に接続する整合回路部を有する非接触ICタグにおいて、
(1-a)前記第1の無給電アンテナおよび前記第2の無給電アンテナの前記第1の絶縁基板の前記一方の面側への投影像が、前記整合回路付ダイポールアンテナの前記2つのアンテナ部のそれぞれの少なくとも一部に重なり、
(1-b)前記第1の無給電アンテナと前記第2の無給電アンテナが、接続部により電気的に接続され、かつ、
(1-c)前記第1の無給電アンテナ、前記第2の無給電アンテナ、および、前記接続部の前記第1の絶縁基板の前記一方の面側への投影像が、前記ICチップおよび前記整合回路付ダイポールアンテナの前記2つの接続端子部に重ならない非接触ICタグ。 - 第1の絶縁基板と、該第1の絶縁基板の一方の面に設けられたICチップと、該ICチップに電気的に接続された整合回路付ダイポールアンテナとからなるICタグと、前記第1の絶縁基板の他方の面に間隔をおいて設けられた第1の無給電アンテナおよび第2の無給電アンテナとを備え、前記整合回路付ダイポールアンテナが、間隔をおいて位置する2つのアンテナ部と、該2つのアンテナ部のそれぞれを前記ICチップに電気的に接続する2つの接続端子部、および、該2つのアンテナ部を電気的に接続する整合回路部を有する非接触ICタグにおいて、
(2-a)前記第1の無給電アンテナおよび前記第2の無給電アンテナの前記第1の絶縁基板の前記一方の面側への投影像が、前記整合回路付ダイポールアンテナの前記2つのアンテナ部のそれぞれの少なくとも一部に重なり、
(2-b)前記第1の無給電アンテナと前記第2の無給電アンテナが、接続部により電気的に接続され、かつ、
(2-c)前記第1の無給電アンテナ、前記第2の無給電アンテナ、および、前記接続部の前記第1の絶縁基板の前記一方の面側への投影像が、前記整合回路付ダイポールアンテナの前記整合回路部と重ならないか、あるいは、その一部のみと重なる非接触ICタグ。 - 前記第1の無給電アンテナ、第2の無給電アンテナ、および、接続部の前記第1の絶縁基板の前記一方の面側への投影像が、前記整合回路付ダイポールアンテナの前記整合回路部に重ならない請求項2に記載の非接触ICタグ。
- 前記第1の無給電アンテナ、第2の無給電アンテナ、および、接続部の前記第1の絶縁基板の前記一方の面側への投影像が、前記ICチップおよび前記整合回路付ダイポールアンテナの前記2つの接続端子部に重ならない請求項2あるいは3に記載の非接触ICタグ。
- 前記第1の絶縁基板が、樹脂フィルムからなる請求項1あるいは2に記載の非接触ICタグ。
- 前記第1の絶縁基板の前記一方の面側に、第2の絶縁基板が積層されている請求項1あるいは2に記載の非接触ICタグ。
- 前記第1の絶縁基板、前記ICタグ、前記第1の無給電アンテナ、前記第2の無給電アンテナおよび前記接続部が、樹脂により被覆されている請求項1あるいは2に記載の非接触ICタグ。
- 前記第1の絶縁基板、前記ICタグ、前記第1の無給電アンテナ、前記第2の無給電アンテナ、前記接続部および前記第2の絶縁基板が、樹脂により被覆されている請求項6に記載の非接触ICタグ。
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US12/937,633 US8308072B2 (en) | 2008-04-24 | 2009-04-15 | Non-contact IC tag |
JP2009520330A JP5526779B2 (ja) | 2008-04-24 | 2009-04-15 | 非接触icタグ |
CN2009801131286A CN102007644B (zh) | 2008-04-24 | 2009-04-15 | 非接触ic标签 |
EP09734356.0A EP2278662A4 (en) | 2008-04-24 | 2009-04-15 | CONTACT-FREE IC LABEL |
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- 2009-04-15 US US12/937,633 patent/US8308072B2/en not_active Expired - Fee Related
- 2009-04-15 WO PCT/JP2009/057550 patent/WO2009131041A1/ja active Application Filing
- 2009-04-15 CN CN2009801131286A patent/CN102007644B/zh not_active Expired - Fee Related
- 2009-04-15 JP JP2009520330A patent/JP5526779B2/ja not_active Expired - Fee Related
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013114513A (ja) * | 2011-11-29 | 2013-06-10 | Nitta Ind Corp | 情報記憶媒体 |
JP2018207387A (ja) * | 2017-06-08 | 2018-12-27 | 東洋製罐グループホールディングス株式会社 | Rfタグ |
JP7027705B2 (ja) | 2017-06-08 | 2022-03-02 | 東洋製罐グループホールディングス株式会社 | Rfタグ |
Also Published As
Publication number | Publication date |
---|---|
JP5526779B2 (ja) | 2014-06-18 |
EP2278662A4 (en) | 2015-05-27 |
US8308072B2 (en) | 2012-11-13 |
JPWO2009131041A1 (ja) | 2011-08-18 |
TWI495190B (zh) | 2015-08-01 |
CN102007644B (zh) | 2013-10-16 |
EP2278662A1 (en) | 2011-01-26 |
KR20110002837A (ko) | 2011-01-10 |
US20110024512A1 (en) | 2011-02-03 |
TW201014035A (en) | 2010-04-01 |
CN102007644A (zh) | 2011-04-06 |
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