WO2021079600A1 - Étiquette d'identification par radiofréquence (rfid), article ayant une étiquette rfid et enveloppe de câble ayant une étiquette rfid - Google Patents

Étiquette d'identification par radiofréquence (rfid), article ayant une étiquette rfid et enveloppe de câble ayant une étiquette rfid Download PDF

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Publication number
WO2021079600A1
WO2021079600A1 PCT/JP2020/031303 JP2020031303W WO2021079600A1 WO 2021079600 A1 WO2021079600 A1 WO 2021079600A1 JP 2020031303 W JP2020031303 W JP 2020031303W WO 2021079600 A1 WO2021079600 A1 WO 2021079600A1
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WIPO (PCT)
Prior art keywords
rfid tag
article
spiral
radiating element
rfic
Prior art date
Application number
PCT/JP2020/031303
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English (en)
Japanese (ja)
Inventor
浩和 矢▲崎▼
Original Assignee
株式会社村田製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社村田製作所 filed Critical 株式会社村田製作所
Priority to JP2021552218A priority Critical patent/JP7074265B2/ja
Publication of WO2021079600A1 publication Critical patent/WO2021079600A1/fr

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/04—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the shape
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
    • G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
    • 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
    • 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
    • H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength

Definitions

  • the present invention relates to an RFID tag provided on an article, an article with an RFID tag, and a cable cover with an RFID tag.
  • Patent Document 1 discloses an RFIC module that is coupled to a conductor that acts as a radiating element.
  • This RFIC module includes a substrate, an RFIC chip mounted on the substrate, and a matching circuit consisting of a plurality of coils connected to the RFIC chip.
  • the RFIC module described in Patent Document 1 can form an RFID-tagged article by attaching it to various articles or by incorporating it into the article.
  • an object of the present invention is to provide an RFID tag, an article with an RFID tag, and a cable cover with an RFID tag in which interference with a long member such as a string, a cord, a tubular, or a rod is avoided.
  • An RFID tag as an example of the present disclosure is a radiation element formed of an article which is made of a flexible insulating material and has an overall tubular shape, and is connected to or coupled to the radiation element. It is a structure including a chip-shaped RF circuit mounted on an article.
  • the RFID tag is not directly attached to the long member, and since the RFID tag is provided on the article which is tubular as a whole, the RFID tag interferes with the long member. can avoid.
  • the RFID-tagged article as an example of the present disclosure is an article made of a flexible insulating material to form an overall tubular shape
  • the RFID tag is a flexible insulating material. It is characterized by comprising a radiating element formed in an article which is formed and formed into a tubular shape as a whole, and a chip-shaped RF circuit mounted on the insulating base material in a state of being connected to or coupled to the radiating element. And.
  • the RFID tag since the RFID tag is not directly attached to the long member in the state where the article with the RFID tag covers the long member, the RFID tag is provided on the article which is tubular as a whole. Due to the structure, interference by RFID tags with long members can be avoided.
  • the cable cover with RFID tag as an example of the present disclosure is made of a flexible insulating material to form an overall tubular shape, covers the circumference of the cable, and has an RFID tag attached.
  • a cable cover, an RFID tag is an insulating group that is connected to or coupled to a radiation element formed in a cable cover that is made of a flexible insulating material and has an overall tubular shape. It is characterized by having a chip-shaped RF circuit mounted on a material.
  • the RFID tag is not directly attached to the cable while the cable cover covers the cable, and the RFID tag is provided on the cable cover which is tubular as a whole. RFID tag interference with the cable is avoided.
  • RFID tags, RFID-tagged articles, and RFID-tagged cable covers that avoid interference with long members such as strings, cords, tubulars, and rods, and cables that avoid interference with cables. Is obtained.
  • FIG. 1 is a plan view of the RFID tag 201 according to the first embodiment.
  • FIG. 2A is a perspective view of the RFID-tagged spiral article 311 and
  • FIG. 2B is a perspective view showing the state of the cable 401 covered with the RFID-tagged spiral article 311.
  • FIG. 3 is an enlarged plan view of a mounting portion of the RFIC module 101 included in the RFID tag 201 shown in FIG.
  • FIG. 4A is a cross-sectional view of the RFIC module 101.
  • FIG. 4B is a cross-sectional view of the insulating base material 60 with the RFIC module 101 mounted, and is a cross-sectional view of the XX portion in FIG.
  • FIG. 5 is a plan view showing a conductor pattern formed on the substrate 1 of the RFIC module 101.
  • FIG. 6 is a circuit diagram of the RFIC module 101.
  • 7 (A) and 7 (B) are equivalent circuit diagrams of RFID tags in a state of being attached to a spiral article.
  • FIG. 8 is a plan view of the RFID-tagged spiral article 312 according to the second embodiment in a state in which the spiral article is unwound and flattened.
  • FIG. 9 is a perspective view of a spiral article 312 with an RFID tag.
  • FIG. 10 is an external view of the RFID-tagged spiral article 312 in a long state.
  • FIG. 11 is a plan view and a cross-sectional view of the RFID tag 203 according to the third embodiment.
  • FIG. 12 is a plan view of the RFID tag 204 according to the fourth embodiment.
  • FIG. 1 is a plan view of the RFID tag 201 according to the first embodiment.
  • the RFID tag 201 includes a radiating element 6 and an RFIC module 101 that is capacitively coupled (electrically coupled) to the radiating element 6.
  • the radiating element 6 is composed of conductor patterns 61 and 62 formed on the insulating base material 60.
  • the insulating base material 60 is, for example, a film of polyethylene terephthalate (PET), and the conductor patterns 61 and 62 are, for example, aluminum foil patterns.
  • PET polyethylene terephthalate
  • the RFIC module 101 is an example of the "RF circuit" according to the present invention.
  • the conductor pattern 61 is composed of conductor patterns 61P and 61C
  • the conductor pattern 62 is composed of conductor patterns 62P and 62C.
  • the conductor patterns 61 and 62 constitute a dipole antenna.
  • the RFIC module 101 is mounted on the conductor patterns 61P and 62P.
  • the width of the conductor patterns 61C and 62C of the radiating element 6 in the Y direction is wider than the width of the RFIC module 101 in the Y direction.
  • the width of the conductor patterns 61C and 62C of the radiating element 6 in the Y direction is about 10 mm, and the width of the RFIC module 101 in the Y direction is about 3 mm.
  • FIG. 2A is a perspective view of the RFID-tagged spiral article 311 and FIG. 2B is a perspective view showing the state of the cable 401 covered with the RFID-tagged spiral article 311.
  • the RFID-tagged spiral article 311 is a disclosure example of the "RFID-tagged article” and the "RFID-tagged cable cover” according to the present invention.
  • the RFID-tagged spiral article 311 covers the perimeter of the plurality of cables 401.
  • Each cable of the cable 401 is a cable coated with an insulator.
  • the spiral article 301 shown in FIG. 2 (A) is made of a flexible insulating material such as polyethylene, 6 nylon, 12 nylon, fluororesin FEP, and fluororesin PFA to form an overall tubular shape. It is a spiral article.
  • the thickness of the spiral article 301 is, for example, 0.45 mm in a state where the spiral article 301 is unwound and made flat.
  • An adhesive layer is formed on the lower surface of the insulating base material 60 of the RFID tag 201, and the RFID tag 201 shown in FIG. 1 is attached to the outer surface of the spiral article 301. Therefore, the RFID tag 201 has a spiral shape similar to the spiral shape of the spiral article 301.
  • the "spiral shape” is a shape that orbits around the tubular shape, and a shape in which the traveling component in the orbit is present in the extending direction of the tubular shape.
  • the spiral article forms the tubular shape as a whole.
  • the cable 401 coated with the RFID-tagged spiral article 311 is configured as shown in FIG. 2 (B). ..
  • FIG. 3 is an enlarged plan view of a mounting portion of the RFIC module 101 included in the RFID tag 201 shown in FIG.
  • FIG. 4A is a cross-sectional view of the RFIC module 101.
  • FIG. 4B is a cross-sectional view of the insulating base material 60 with the RFIC module 101 mounted, and is a cross-sectional view of the XX portion in FIG.
  • the RFIC module 101 includes a substrate 1 and an RFIC 2 mounted on the substrate 1.
  • the substrate 1 is a flexible substrate such as polyimide.
  • a protective film 3 is coated on the upper surface of the substrate 1 on which the RFIC 2 is mounted.
  • the protective film 3 is an elastomer such as polyurethane or a hot melt agent such as ethylene vinyl acetate (EVA).
  • a coverlay film 4 is provided on the lower surface of the substrate 1.
  • the coverlay film 4 is, for example, a polyimide film. Therefore, the substrate 1, the protective film 3, and the coverlay film 4 are all soft, and the entire RFIC module 101 is soft.
  • the RFIC module 101 is adhered to the insulating base material 60 of the radiating element 6 via the adhesive layer 5.
  • the adhesive layer 5 is a layer of an insulating adhesive, for example, an acrylic adhesive.
  • the first terminal electrode 11 on the radiating element side faces the conductor pattern 61P of the radiating element 6 via the adhesive layer 5, and the second terminal electrode 12 on the radiating element side faces the conductor pattern 62P of the radiating element 6 via the adhesive layer 5. Facing.
  • the first terminal electrode 11 on the radiation element side and the second terminal electrode 12 on the radiation element side are capacitively coupled (electric field coupling) to the conductor patterns 61P and 62P of the radiation element 6, respectively.
  • FIG. 5 is a plan view showing a conductor pattern formed on the substrate 1 of the RFIC module 101.
  • the upper portion is a plan view of the conductor pattern formed on the upper surface of the substrate 1
  • the lower portion of FIG. 5 is a plan view of the conductor pattern formed on the lower surface of the substrate 1.
  • the RFIC-side first terminal electrode 31, the RFIC-side second terminal electrode 32, the conductor pattern L11 of the main part of the first inductor L1, and the conductor pattern L21 of the main part of the second inductor L2 are formed. ing.
  • the RFIC-side first terminal electrode 31 is connected to one end of the conductor pattern L11
  • the RFIC-side second terminal electrode 32 is connected to one end of the conductor pattern L21.
  • These conductor patterns are, for example, copper foil patterned by photolithography.
  • These conductor patterns are also, for example, copper foil patterned by photolithography.
  • One end of the conductor pattern L12 of a part of the first inductor L1 and one end of the conductor pattern of the third inductor L3 are connected to the first terminal electrode 11 on the radiation element side.
  • one end of the conductor pattern L22 of a part of the second inductor L2 and one end of the conductor pattern of the fourth inductor L4 are connected to the second terminal electrode 12 on the radiation element side.
  • the conductor pattern of the fifth inductor L5 is connected between the other end of the conductor pattern of the third inductor L3 and the other end of the conductor pattern of the fourth inductor L4.
  • the other end of the conductor pattern of the third inductor L3 and the other end of the conductor pattern L11 of the main portion of the first inductor L1 are connected via the via conductor V1.
  • the other end of the conductor pattern of the fourth inductor L4 and the other end of the conductor pattern L21 of the main portion of the second inductor L2 are connected via the via conductor V2.
  • RFIC2 is mounted on the RFIC side first terminal electrode 31 and the RFIC side second terminal electrode 32. That is, the terminal 21 of the RFIC 2 is connected to the first terminal electrode 31 on the RFIC side, and the terminal 22 of the RFIC 2 is connected to the second terminal electrode 32 on the RFIC side.
  • the first inductor L1 and the third inductor L3 are formed in different layers of the substrate 1, and are arranged so that the coil openings overlap.
  • the second inductor L2 and the fourth inductor L4 are formed on different layers of the substrate 1, and are arranged so that the coil openings overlap.
  • the second inductor L2 and the fourth inductor L4 and the first inductor L1 and the third inductor L3 are arranged so as to sandwich the mounting position of the RFIC 2 along the surface of the substrate 1.
  • the winding direction from the first terminal electrode 31 on the RFIC side to the other end of the third inductor L3 and the winding direction from the second terminal electrode 32 on the RFIC side to the other end of the fourth inductor L4 are the same direction. ..
  • the directions shown in FIG. 5 are all right-handed. This means that the pair of the first inductor L1 and the third inductor L3 and the pair of the second inductor L2 and the fourth inductor L4 have a 180 ° rotational symmetry with respect to the mounting position of the RFIC2. You can also do it.
  • FIG. 6 is a circuit diagram of the RFIC module 101.
  • the RFIC module 101 is composed of an RFIC 2 and an impedance matching circuit 7.
  • the impedance matching circuit 7 is connected to the RFIC side first terminal electrode 31, the RFIC side second terminal electrode 32, the first terminal electrode 11, and the second terminal electrode 12. Further, the impedance matching circuit 7 includes a first inductor L1, a second inductor L2, a third inductor L3, a fourth inductor L4, and a fifth inductor L5.
  • the first inductor L1 is composed of the conductor patterns L11 and L12 shown in FIG. 5, and the second inductor L2 is composed of the conductor patterns L21 and L22 shown in FIG.
  • the first inductor L1 is connected between the first terminal electrode 11 on the radiation element side and the first terminal electrode 31 on the RFIC side.
  • the second inductor L2 is connected between the second terminal electrode 12 on the radiation element side and the second terminal electrode 32 on the RFIC side.
  • One end of the third inductor L3 is connected to the first terminal electrode 11 on the radiation element side
  • one end of the fourth inductor L4 is connected to the second terminal electrode 12 on the radiation element side
  • the fifth inductor L5 is the third inductor. It is connected between the other end of L3 and the other end of the fourth inductor L4.
  • the first terminal electrode 11 on the radiating element side is connected to the conductor pattern 61 of the radiating element via the capacitance C1
  • the second terminal electrode 12 on the radiating element side is connected to the conductor pattern 62 of the radiating element via the capacitance C2.
  • RFIC2 has a capacitance due to an internal circuit, parasitic capacitance, and the like.
  • the first resonance is the resonance that occurs in the current path composed of the conductor patterns 61 and 62 and the inductors L3, L4 and L5, and the second resonance is the resonance formed by the inductors L1 to L5 and the above capacitance. It is a resonance that occurs in the path (current loop).
  • These two resonances are coupled by inductors L3, L4, and L5 shared in each current path, and the two currents i1 and i2 corresponding to the two resonances flow as shown in FIG.
  • the two resonance frequencies are close to each other, and by combining these two resonances, a wide-band resonance frequency characteristic over the two resonance frequencies can be obtained.
  • FIGS. 7 (A) and 7 (B) are equivalent circuit diagrams of RFID tags in a state of being attached to a spiral article.
  • the solid arrow indicates the direction of the current flowing through the conductor patterns 61 and 62 at a certain phase (timing), and the broken line arrow indicates the phase (timing).
  • the magnetic flux interlinking with the conductor patterns 61 and 62 of the above is shown.
  • the length L shown in FIGS. 7 (A) and 7 (B) is a length along the current path of the conductor patterns 61 and 62.
  • the wavelength of the voltage or current distributed in the conductor patterns 61 and 62 of length L constituting the radiating element exceeds 1/2 wavelength. Therefore, the direction of the magnetic flux generated in the conductor patterns 61 and 62 is reversed in the middle, and the magnetic field generated by the conductor patterns 61 and 62 as a whole is suppressed.
  • the wavelength of the voltage or current distributed in the conductor patterns 61 and 62 having a length L constituting the radiating element is 1/2 wavelength or less. Therefore, the magnetic flux generated by the conductor pattern 61 and the magnetic flux generated by the conductor pattern 62 are in the same direction over the entire length. Therefore, the magnetic field is not suppressed, and high efficiency can be maintained as a radiating element.
  • the length L along the current path of the conductor patterns 61 and 62 is ideal depending on the dielectric constant of the insulating base material 60 and the pitch (magnitude of the traveling direction component) around the spiral conductor patterns 61 and 62. Although the value can be determined, in reality, the optimum value of the length L changes depending on the mounting structure of the RFID tag on the elongated member. Therefore, the length L may be appropriately determined according to the dielectric constant of the insulating base material 60, the pitch around the spiral conductor patterns 61 and 62, and the mounting structure of the RFID tag on the long member.
  • the RFIC2 performs wireless communication in, for example, the UHF band (860 MHz to 960 MHz).
  • the length L along the current path of the conductor patterns 61 and 62 is preferably a length that resonates in the frequency band of wireless communication.
  • the RFID tag Since the RFID tag is not directly attached to the cable, interference by the RFID tag can be avoided. Further, since the radiating element is separated from the conductor of the cable in a state where the spiral article provided with the RFID tag covers the cable, it is not easily affected by the conductor of the cable.
  • the conductor patterns 61C and 62C acting as radiation elements have a structure that circulates in a spiral shape, the directivity of radiation becomes more omnidirectional, and there are no restrictions on the directivity in communication with the reader / writer.
  • the conductor patterns 61C and 62C acting as radiating elements have a structure that spirally orbits, the occupied length of the RFID tag in the longitudinal direction of the cable is shortened, and the RFID tag can be provided in a limited space.
  • the RFIC module 101 has wideband characteristics due to the action of the impedance matching circuit 7, so that even if the spiral article expands and contracts in the axial direction (traveling direction), the electrical characteristics as an RFID tag are exhibited. There is little fluctuation.
  • the radiating element 6 is a conductor pattern in which the line widths of the conductor patterns 61C and 62C constituting the main part thereof extend in a line shape thicker than the width of the RFIC module 101, the resistance loss of the radiating element is small and the loss is low. Can be achieved.
  • the conductor patterns 61C and 62C are thin conductor patterns or a conductor pattern having high conductivity such as aluminum foil, a low-loss radiating element is configured.
  • the conductor patterns 61C and 62C of the radiating element 6 have a width of about 10 mm in the Y direction, and the RFIC module 101 has a width of about 3 mm in the Y direction.
  • the width of the patterns 61C and 62C in the Y direction may be in the range of 6 mm to 20 mm, and the width of the RFIC module 101 in the Y direction may be in the range of 2 mm to 5 mm.
  • the wavelength of the voltage or current distributed in the conductor patterns 61 and 62 constituting the radiating element is set to 1/2 wavelength or less, the magnetic flux generated by the conductor pattern 61 and the magnetic flux generated by the conductor pattern 62 extend over the entire length. In the same direction, high efficiency can be maintained as a radiating element.
  • the RFID tag 201 is formed on the outer surface of the spiral article 301, but the RFID tag 201 can also be provided on the inner surface of the spiral article 301. In that case, the RFID tag 201 may be attached to the surface on the side that will later become the inner surface in a state where the spiral article 301 is unwound and made flat.
  • the distance between the conducting wire in the cable or the shield conductor of the outer cover and the radiating element becomes narrower than when the RFID tag 201 is provided on the outer surface.
  • the above interval is secured to some extent as compared with the case where the RFID tag is attached to the surface of the cable. Therefore, it can be less affected by the conductor in the cable and the shield conductor of the outer cover.
  • the RFID tag 201 when the RFID tag 201 is provided on the inner surface of the spiral article 301, the RFID tag has a structure protected by the spiral article, so that the peeling of the RFID tag is reduced. Further, since the RFID tag has a structure of being sandwiched between the spiral article and the cable, it is possible to obtain an effect of reducing an external impact (mechanical impact or environmental impact such as humidity and temperature).
  • an external impact mechanical impact or environmental impact such as humidity and temperature
  • the second embodiment shows an example of an RFID-tagged spiral article configured by providing an RFID tag directly on the spiral article.
  • FIG. 8 is a plan view of the RFID-tagged spiral article 312 according to the second embodiment in a state in which the spiral article is unwound and flattened.
  • FIG. 9 is a perspective view of a spiral article 312 with an RFID tag.
  • the RFID-tagged spiral article 312 is an article in which the RFID tag 202 is formed on the outer surface of the spiral article 301.
  • the spiral article 301 is made of a flexible insulating material and is generally tubular. The configuration of the spiral article 301 is as shown in the first embodiment.
  • the RFID tag 202 includes a radiating element with conductor patterns 61 and 62 and an RFIC module 101 coupled to the radiating element.
  • the conductor patterns 61 and 62 are formed on the surface of the spiral article 301.
  • the conductor patterns 61 and 62 are, for example, aluminum foil patterns.
  • the conductor patterns 61 and 62 are joined to the surface of the spiral article 301 via an adhesive layer or an adhesive layer.
  • the conductor pattern 61 is composed of conductor patterns 61P and 61C
  • the conductor pattern 62 is composed of conductor patterns 62P and 62C.
  • the conductor patterns 61 and 62 constitute a dipole antenna.
  • the RFIC module 101 is mounted on the conductor patterns 61P and 62P.
  • a protective film 8 is formed on the surfaces of the conductor patterns 61 and 62 and the RFIC module 101.
  • the protective film 8 is, for example, an elastomer such as polyurethane, a coating film of a hot melt agent such as ethylene vinyl acetate (EVA), or a coverlay film such as a polyimide film.
  • the conductor patterns 61 and 62 are formed and the RFIC module 101 is mounted in a flat state in which the spiral article 301 is unwound and flattened. After that, as shown in FIG. 9, the spiral article 301 returns to the spiral state due to its elasticity.
  • FIG. 10 is an external view of the RFID-tagged spiral article 312 in a long state.
  • RFID tags 202 are provided at a plurality of predetermined positions of the spiral article 301.
  • the spiral article 312 with an RFID tag is managed in a long state during manufacturing, transportation, storage, etc., necessary communication can be performed with any one of a large number of RFID tags 202.
  • the spiral article 312 with an RFID tag is cut to a predetermined length and used, if there is one or more RFID tags 202 in the cut spiral article 312 with an RFID tag, it is possible to manage in the cut unit. Is.
  • providing a plurality of RFID tags in a long state can be similarly applied to the spiral article with an RFID tag shown in the first embodiment.
  • the RFID tag 202 is formed on the outer surface of the spiral article 301, but the RFID tag 202 can also be formed on the inner surface of the spiral article 301. In that case, the conductor patterns 61 and 62 are formed and the RFIC module 101 is mounted on the surface on the side that will later become the inner surface in a state where the spiral article 301 is unwound and made flat.
  • FIG. 11 is a plan view and a cross-sectional view of the RFID tag 203 according to the third embodiment.
  • the RFID tag 203 is composed of an insulating base material 60, conductor patterns formed on both surfaces thereof, and an RFIC module 101.
  • Conductor patterns 63 and 64 are formed on the upper surface of the insulating base material 60, and the conductor pattern 65 is formed on the entire lower surface of the insulating base material 60.
  • the conductor pattern 63 is formed in an island shape in a part of the opening of the conductor pattern 64.
  • the first terminal electrode on the radiation element side of the RFIC module 101 faces the end of the conductor pattern 63, and the second terminal electrode on the radiation element side of the RFIC module 101 (FIG. 3).
  • the second terminal electrode 12) on the radiating element side shown in (1) faces the edge of the opening of the conductor pattern 64.
  • the radiating element by the microstrip line is configured by the conductor patterns 63, 64, 65. Since the lower surface of the RFID tag 203 is covered with the conductor pattern 65, the radiating element is not adversely affected by the conductivity of the member covered by the spiral article with the RFID tag. For example, it can be applied to a cable provided with an electromagnetic shield material on its surface, a conductive tube, or the like.
  • FIG. 12 is a plan view of the RFID tag 204 according to the fourth embodiment.
  • the RFID tag 204 includes a radiating element 6 and an RFIC module 101 capacitively coupled (electrically coupled) to the radiating element 6.
  • the radiating element 6 is composed of an insulating base material 60 and conductor patterns 61 and 62 formed on the insulating base material 60.
  • the conductor pattern 61 is composed of conductor patterns 61P, 61L, 61C
  • the conductor pattern 62 is composed of conductor patterns 62P, 62L, 62C.
  • the conductor patterns 61 and 62 constitute a dipole antenna.
  • the RFIC module 101 is mounted on the conductor patterns 61P and 62P.
  • the conductor patterns 61L and 62L have a meander line shape and act as a region having a high inductance component. Further, the conductor patterns 61C and 62C have a planar shape and act as a region having a high capacitance component. As a result, the inductance component in the region with high current strength is increased, the capacitance component in the region with high voltage strength is increased, and the formation regions of the conductor patterns 61 and 62 of the antenna are reduced.
  • the radiating element 6 is not limited to being linear in the longitudinal direction of the insulating base material 60, and may include a meander line-shaped portion. According to this embodiment, since the longitudinal direction of the insulating base material 60 can be shortened, the line length (spiral length) of the portion to be attached to the spiral article is shortened. Therefore, the RFID tag can be easily attached.
  • the RFID-tagged article covering the long member has a spiral shape, but the long member may have a C-shaped cross section covering only one round or less than one round. ..
  • the RFIC module 101 having the RFIC 2 and the impedance matching circuit 7 is exemplified as the “RF circuit”, but the RFIC 2 may be the “RF circuit”. In that case, an impedance matching circuit may be formed on the insulating base material 60.
  • the RF circuit is capacitively coupled to the radiating element 6, but the RF circuit may be directly connected to the radiating element 6.
  • a cable cover with an RFID tag that covers a plurality of bundled cables is shown, but the present invention can be similarly applied to a cable cover that covers a single cable.
  • the conductive long member covered by the RFID-tagged spiral article a power cable, a signal cable, a pipe through which a conductive liquid containing water or water is passed, and the like are exemplified.
  • the same can be applied to a spiral article with an RFID tag that covers a long member without conductivity.
  • the long member may be a tube such as an insulating hose, tube, or catheter.
  • the long member covered by the RFID tag is not limited to a flexible member.
  • a hard resin or metal tube or rod can be similarly configured and similarly applicable.
  • RFIC side second terminal electrode 60 Insulating base material 61, 62 ... Conductor pattern 61C, 62C ... Conductor pattern 61L, 62L ... Conductor pattern 61P, 62P ... Conductor pattern 63, 64 , 65 ... Conductor pattern 101 ... RFIC module 201, 202, 203, 204 ... RFID tag 301 ... Spiral article 311, 312 ... Spiral article with RFID tag 401 ... Cable

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Abstract

La présente invention concerne une étiquette d'identification par radiofréquence (RFID) (201) qui comporte : un élément de rayonnement ; un circuit intégré radiofréquence (RFIC) connecté ou couplé à cet élément de rayonnement ; et un matériau de base isolant formé à partir d'un matériau isolant souple et destiné à être fixé à un article en forme de spirale (301) dont l'ensemble forme une forme tubulaire. L'élément de rayonnement est formé sur le matériau de base isolant, et le RFIC est monté sur le matériau de base isolant dans un état connecté ou couplé à l'élément de rayonnement. Ainsi, il est possible de former une étiquette RFID et un article en forme de spirale ayant une étiquette RFID qui sont appropriés pour des câbles, tels que des câbles d'alimentation ou des câbles de signal, et qui sont moins sensibles à l'influence d'un conducteur interne ou évitent un brouillage entre les câbles.
PCT/JP2020/031303 2019-10-23 2020-08-19 Étiquette d'identification par radiofréquence (rfid), article ayant une étiquette rfid et enveloppe de câble ayant une étiquette rfid WO2021079600A1 (fr)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009239817A (ja) * 2008-03-28 2009-10-15 Tomoegawa Paper Co Ltd アンテナ用紙、それを用いたシート状アンテナ及びｒｆｉｄタグ
JP2013189718A (ja) * 2012-03-13 2013-09-26 Urase Kk 複合糸及びそれを用いた布帛並びに複合糸の製造方法
WO2019175509A1 (fr) * 2018-03-14 2019-09-19 Primo1D Fil guipe compose d'une ame principale et d'au moins un fils de couverture et comprenant au moins un element filaire conducteur relie electriquement a au moins une puce electronique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001239900A (ja) 2000-02-29 2001-09-04 Sumitomo Wiring Syst Ltd 車体と可動体との間のワイヤハーネス配索構造
JP2003009329A (ja) 2001-06-26 2003-01-10 Fujikura Ltd 通信ケーブル用の識別タグ
JP5009859B2 (ja) 2008-06-02 2012-08-22 株式会社大気社 開放式プッシュプル型換気装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009239817A (ja) * 2008-03-28 2009-10-15 Tomoegawa Paper Co Ltd アンテナ用紙、それを用いたシート状アンテナ及びｒｆｉｄタグ
JP2013189718A (ja) * 2012-03-13 2013-09-26 Urase Kk 複合糸及びそれを用いた布帛並びに複合糸の製造方法
WO2019175509A1 (fr) * 2018-03-14 2019-09-19 Primo1D Fil guipe compose d'une ame principale et d'au moins un fils de couverture et comprenant au moins un element filaire conducteur relie electriquement a au moins une puce electronique

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JPWO2021079600A1 (fr) 2021-04-29

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