WO2017209195A1 - Dispositif antenne et étiquette ci l'utilisant - Google Patents

Dispositif antenne et étiquette ci l'utilisant Download PDF

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Publication number
WO2017209195A1
WO2017209195A1 PCT/JP2017/020308 JP2017020308W WO2017209195A1 WO 2017209195 A1 WO2017209195 A1 WO 2017209195A1 JP 2017020308 W JP2017020308 W JP 2017020308W WO 2017209195 A1 WO2017209195 A1 WO 2017209195A1
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WO
WIPO (PCT)
Prior art keywords
antenna
loop
booster
solenoid coil
portions
Prior art date
Application number
PCT/JP2017/020308
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English (en)
Japanese (ja)
Inventor
純 香嶋
誠司 大前
芳輝 河野
Original Assignee
戸田工業株式会社
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 戸田工業株式会社 filed Critical 戸田工業株式会社
Priority to JP2018520965A priority Critical patent/JP6881447B2/ja
Priority to CN201780048045.8A priority patent/CN109565113B/zh
Publication of WO2017209195A1 publication Critical patent/WO2017209195A1/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
    • G06K19/06—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
    • H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
    • H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material

Definitions

  • the present invention relates to an antenna device and an IC tag using the antenna device, and more particularly to an antenna device having improved communication characteristics by including a booster antenna including a plurality of antennas, and an IC tag using the antenna device.
  • an IC chip and an antenna electrically connected to the IC chip are provided in an insulating base, and power reception from the reader / writer and transmission / reception of signals to / from the reader / writer are not performed using electromagnetic waves.
  • An IC tag that is performed by contact is known.
  • IC tags are used not only for production process management in factories and article management in warehouses, but also as tickets for transportation facilities as IC cards incorporating IC tags.
  • an antenna provided in an IC tag is manufactured by forming a coil by winding a conductive wire on a base material, or by printing a coil pattern on the surface of the base material.
  • a booster is added to the IC tag separately from the antenna in order to increase the communication distance between the reader / writer and the antenna, or to expand the possible communication direction.
  • An antenna is provided (for example, see Patent Document 1).
  • the booster antenna can be electromagnetically coupled to the antenna provided in the reader / writer and can be electromagnetically coupled to the antenna provided in the IC tag.
  • a booster antenna composed of a large planar loop coil is provided in the vicinity of a plurality of coil antennas having different winding axes provided in an IC tag, It is considered to provide a booster antenna formed of a formed planar loop coil (see, for example, Patent Documents 2 and 3).
  • Patent Documents 1 to 3 even if a booster antenna configured by a planar loop antenna is combined with the antenna, depending on the arrangement and configuration, there is a range in which the antennas can communicate with each other due to interference with each other. There is a possibility that a part that cannot be locally communicated within an area where communication is possible may be reduced. Further, even if the direction in which communication can be performed can be compensated, other communication characteristics such as a reduction in communication distance may be deteriorated.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a booster antenna having a preferable arrangement, thereby expanding the range in which communication is possible and improving the communication characteristics, and the use of the antenna device. It is to obtain an IC tag.
  • an antenna device for example, a main antenna in which a coil is formed on a magnetic material and a non-magnetic material surface disposed on the antenna surface are connected in parallel to each other.
  • a booster antenna composed of a plurality of loop antennas.
  • an antenna device includes a main antenna in which an antenna portion made of a conductor is formed on a magnetic material, and a plurality of loop antenna portions on the same surface of a non-magnetic material disposed on the surface of the magnetic material.
  • a plurality of loop antenna portions are arranged so as to partially overlap the antenna portion of the main antenna, and the plurality of loop antenna portions constituting the booster antenna are parallel to each other It is connected and wound in the same direction.
  • the antenna device can expand the communication range of the antenna.
  • the plurality of loop antenna portions are arranged so as to partially overlap the antenna portion of the main antenna provided on the magnetic body.
  • the booster antenna constructed can be strongly coupled, and the communication range of the antenna device can be expanded.
  • the plurality of loop antenna portions constituting the booster antenna are connected in parallel to each other on the same surface of the nonmagnetic material, and the self-inductance of each loop antenna portion can be increased.
  • the coupling coefficient with the antenna on the reader / writer side can be increased.
  • the communication characteristics can be improved, and the communication distance can be extended in the direction in which the communication distance usually decreases.
  • each loop antenna portion may be electromagnetically coupled to the antenna independently. It becomes possible, and the antenna devices can communicate with each other by strengthening the effect of expanding the communication range between the loop antenna parts in the area where the connectable areas of the loop antenna parts overlap each other, rather than interfering with each other. The range can be expanded. Further, in the present invention, since the loop antenna is employed as the booster antenna, the communicable area of the antenna device can be expanded while minimizing an increase in production process and an increase in the size of the antenna device.
  • the antenna portion of the main antenna has a solenoid coil shape in which a conductor is wound with a magnetic body as a magnetic core, and the non-magnetic body is a magnetic body parallel to the winding axis direction of the conductor. It may be arranged on the surface.
  • the antenna device of the present invention has excellent communication performance in the direction perpendicular to the winding axis of the solenoid coil-shaped main antenna, particularly in the direction perpendicular to the winding axis from the central region of the solenoid coil-shaped main antenna.
  • a plurality of loop antenna portions connected in parallel to each other as a booster antenna are arranged on the same surface of a non-magnetic material arranged on the surface of the magnetic material. More specifically, the non-magnetic material is arranged on the surface of the magnetic material parallel to the winding axis direction of the solenoid coil-shaped main antenna, that is, the solenoid coil-shaped main antenna cannot communicate well.
  • each of the plurality of loop antenna portions is arranged so as to partially overlap with the portion of the magnetic body around which the conductor is wound. Communication in the direction perpendicular to the winding axis from the center region of the coil can be improved.
  • the non-magnetic material is preferably disposed on a plurality of surfaces of the magnetic material.
  • the booster antennas arranged on different surfaces may be connected in parallel to each other or may not be connected.
  • the communicable area can be expanded not only in one direction perpendicular to the winding axis of the solenoid coil-shaped main antenna but also in all directions where the surface provided with the booster antenna faces.
  • the antenna device can communicate in all directions. The area can be enlarged.
  • a gap may be provided between the plurality of loop antenna portions of the booster antenna, and the distance may be one half or less of the coil length of the solenoid coil antenna. preferable.
  • the booster antenna can better compensate for the communication performance from the central region of the solenoid coil-shaped main antenna to the direction perpendicular to the winding axis, and the communication region of the antenna device can be expanded.
  • the main antenna is a main antenna in which a loop antenna portion is formed on the surface of the magnetic body as the antenna portion, and the opening direction of the booster antenna is the antenna portion of the main antenna.
  • the opening direction may be the same.
  • the booster antenna can improve the communication range.
  • a gap may be provided between the plurality of loop antenna portions of the booster antenna, and the distance is preferably equal to or smaller than the radius of the main antenna.
  • the booster antenna can better compensate for the communication performance from the central area of the main antenna to the direction perpendicular to the winding axis, and the communication area of the antenna device can be expanded.
  • the booster antenna is preferably disposed so as to partially overlap the main antenna.
  • the main antenna and the booster antenna can be strongly coupled, and the communication area of the antenna device can be expanded.
  • two loop antenna portions constituting a booster antenna are formed, and the two loop antenna portions are arranged symmetrically with respect to the center of the surface of the nonmagnetic material. Is preferred.
  • the solenoid coil-shaped main antenna cannot communicate well in the direction perpendicular to the coil winding axis as described above, particularly in the direction perpendicular to the winding axis from the central region of the solenoid coil-shaped main antenna.
  • the two loop antenna parts symmetrically with respect to the center of the surface of the non-magnetic material, communication in the direction perpendicular to the winding axis from the central region of the solenoid coil-shaped main antenna can be particularly improved. Can be supplemented.
  • Another object of the present invention is an IC tag including any one of the antenna devices described above.
  • Such an IC tag includes the antenna device according to the present invention described above, it is possible to expand an area where communication is possible and to exhibit excellent communication performance.
  • the antenna device and the IC tag using the antenna device according to the present invention it is possible to expand the communication area and improve the communication performance.
  • FIG. 1 is a circuit diagram showing a configuration of an IC tag according to an embodiment of the present invention.
  • FIG. 2 is an exploded perspective view showing the configuration of the antenna device according to one embodiment of the present invention.
  • FIG. 3A is a diagram for explaining the relationship between the arrangement of the loop antenna units constituting the booster antenna of the antenna device and the communicable area of the antenna device.
  • FIG. 3-2 is a diagram for explaining the relationship between the arrangement of the loop antenna units constituting the booster antenna of the antenna device and the communicable area of the antenna device.
  • FIG. 3C is a diagram for explaining the relationship between the arrangement of the loop antenna units constituting the booster antenna of the antenna device and the communicable area of the antenna device.
  • FIG. 3A is a diagram for explaining the relationship between the arrangement of the loop antenna units constituting the booster antenna of the antenna device and the communicable area of the antenna device.
  • FIG. 3-2 is a diagram for explaining the relationship between the arrangement of the loop antenna units constituting the booster antenna of the antenna device and the
  • FIG. 4 is a perspective view showing a configuration of an antenna apparatus according to a first modification of the embodiment of the present invention.
  • FIGS. 5A and 5B are perspective views showing a configuration of an antenna device according to a second modification of the embodiment of the present invention.
  • FIG. 6 is an exploded perspective view showing a configuration of an antenna apparatus according to a third modification of the embodiment of the present invention.
  • FIG. 7 is an exploded perspective view showing a configuration of an antenna apparatus according to a fourth modification of the embodiment of the present invention.
  • FIG. 8 is an exploded perspective view showing a configuration of an antenna device according to another embodiment of the present invention.
  • the IC tag 1 includes an IC chip 10 and an antenna device 20.
  • the antenna device 20 includes a solenoid coil-shaped main antenna 30 electrically connected to the IC chip 10 and a booster antenna 40 for improving communication characteristics of the solenoid coil-shaped main antenna 30.
  • the main antenna 30 includes a solenoid coil-shaped antenna unit 31 and a capacitor 32, and the booster antenna 40 includes a first loop antenna unit 41a and a second loop antenna unit 41b connected in parallel to each other, and a capacitor 42. ing.
  • the solenoid coil-shaped main antenna 30 and the booster antenna 40 can be electromagnetically coupled to each other.
  • the IC tag 1 according to the present embodiment can exhibit excellent communication performance by including the antenna device 20 in which the solenoid coil-shaped main antenna 30 and the booster antenna 40 are combined.
  • the capacitor 32 in the solenoid coil-shaped main antenna 30 and the capacitor 42 in the booster antenna 40 are omitted, and the connection between the two loop antenna portions 41a and 41b is also omitted. is doing.
  • the capacitor 32 in the solenoid coil-shaped main antenna 30 is connected to the antenna portion 31, and the capacitor 42 in the booster antenna 40 is composed of the first loop antenna portion 41a and the second loop antenna portion 41b. Are connected to each other so that they are connected in parallel.
  • the main antenna 30 is constituted by a solenoid coil-shaped antenna unit 31 in which a conducting wire is wound around a rectangular parallelepiped magnetic body 33.
  • the magnetic body 33 is provided with an IC chip connection terminal extending from the solenoid coil-shaped antenna portion 31, and this is used when connecting to the IC chip 10.
  • the magnetic body 33 only needs to contain a magnetic material, and the magnetic material used for the magnetic body 33 is not particularly limited, and for example, a Ni—Zn ferrite magnetic body or the like can be used.
  • the material of the conducting wire used for the solenoid coil-shaped antenna unit 31 is not particularly limited, and for example, a metal conductor such as silver, gold, or copper is used.
  • the booster antenna 40 has a first loop antenna part (first booster antenna part) 41a and a second loop antenna part (second booster antenna part) 41b formed on the surface of the nonmagnetic material 43.
  • the loop antenna is not an antenna in which a conductor is wound with a magnetic core as a winding axis like a solenoid coil, but an antenna in which a conductor is spirally formed on the surface of a base.
  • the nonmagnetic material 43 is not particularly limited as long as it is made of a nonmagnetic material. For example, glass-based ceramics or nonmagnetic ferrite can be used.
  • the first loop antenna portion 41a and the second loop antenna portion 41b can be formed by winding a conducting wire on the surface of the non-magnetic material 43.
  • the surface of the non-magnetic material 43 using a printing technique or the like.
  • a metal conductor or the like can be used similarly to the solenoid coil-shaped antenna unit 31.
  • the first loop antenna portion 41 a and the second loop antenna portion 41 b are configured to be electromagnetically coupled to the solenoid coil-shaped main antenna 30.
  • the first loop antenna unit 41a and the second loop antenna unit 41b are connected in parallel, and by doing so, each loop antenna unit can be independently connected to the main antenna or Since the electromagnetic coupling with the antenna on the reader / writer side becomes possible, the communication distance in the direction in which the communication distance usually decreases can be extended. Furthermore, the first loop antenna part 41a and the second loop antenna part 41b are wound in the same direction, and in this way, in areas where the communicable areas of the respective loop antenna parts overlap. By strengthening the effect of expanding the communicable range between the loop antenna parts, the communicable range can be further expanded.
  • the non-magnetic body 43 provided with the plurality of loop antenna portions is stacked on the magnetic body 33 of the main antenna 30.
  • the non-magnetic material 43 is laminated in a direction (upward direction in FIG. 2) perpendicular to the winding axis direction (left-right direction in FIG. 2) of the antenna unit 31 in the magnetic material 33.
  • the opening surface of the antenna portion 31 of the main antenna 30 and the opening surfaces of the first loop antenna portion 41a and the second loop antenna portion 41b are arranged to be vertical.
  • the main antenna 30 can communicate mainly in the winding axis direction of the antenna section 31 and in a direction inclined to some extent from the winding axis direction, and is in a direction perpendicular to the winding axis, particularly the main antenna 30. Good communication is not possible in the direction perpendicular to the winding axis from the central region of the wire.
  • the booster antenna 40 is provided on the main antenna 30, and the booster antenna 40 is formed of the non-magnetic material 43 in which the first loop antenna portion 41a and the second loop antenna portion 41b are formed. Good communication is possible in the direction perpendicular to the surface, that is, in the direction perpendicular to the winding axis of the antenna unit 31. Therefore, the booster antenna 40 can compensate for the area where the solenoid coil-shaped main antenna 30 cannot communicate well, and as a result, the communicable range of the antenna device 20 of the present embodiment is expanded.
  • the first loop antenna portion 41 a and the second loop antenna portion 41 b are partially made of a conductor in the magnetic body 33. It is disposed immediately above the wound portion (antenna portion 31). That is, the first loop antenna portion 41a and the second loop antenna portion 41b partially overlap with the solenoid coil-shaped antenna portion 31.
  • the first loop antenna portion 41a and the second loop antenna portion 41b are preferably arranged symmetrically at the center of the surface of the nonmagnetic material 43, and further, the first loop antenna portion 41a and the second loop antenna portion 41b are arranged.
  • the gap with the loop antenna portion 41b is preferably short.
  • the first loop antenna portion 41a and the second loop antenna portion 41b overlap the end portions of the solenoid coil-shaped antenna portion 31, respectively.
  • the end portion of the solenoid coil-shaped antenna portion 31 means the outermost coil portion in the winding axis direction (left-right direction in FIG. 2) of the antenna portion.
  • the first loop antenna portion 41a and the second loop antenna portion 41b do not overlap the solenoid coil-shaped antenna portion 31 at all and there is a large gap between them, The first loop antenna unit 41a and the second loop antenna unit 41b cannot compensate for communication in a region where the main antenna 30 cannot communicate well, and the communicable range of the antenna device 20 cannot be expanded well.
  • FIGS. 3-1 to 3-3 a region surrounded by a broken line indicates a communicable region of the antenna device 20.
  • FIGS. 3A to 3C for the sake of simplification, the illustration of the capacitor is omitted, and the connection between the two loop antenna portions is also omitted.
  • FIGS. 4 to 8 to be described later the capacitor is not shown in the same way as FIGS. 3-1 to 3-3, and the connection between the two loop antenna portions is also not shown.
  • the winding axis direction of the antenna portion 31 and the winding axis are as described above. Communication is possible in a direction inclined to some extent from the direction, but communication cannot be performed above the central portion of the solenoid coil-shaped main antenna 30.
  • the two loop antenna portions 41a and 41b are provided on the solenoid coil-shaped main antenna 30, first, as shown in FIG. 3B, the two loop antenna portions 41a and 41b are connected. If it is not provided directly above the solenoid coil-shaped antenna part 31, that is, provided not to overlap with the antenna part 31, the communication distance in the vicinity of the area where the two loop antenna parts 41a and 41b are provided is large. However, as in the case where the two loop antenna portions 41a and 41b shown in FIG. 3-1 (a) are not provided, communication cannot be performed above the central portion of the solenoid coil-shaped main antenna 30.
  • the loop antenna portions 41a and 41b partially overlap the antenna portion 31 as in FIG. 3-1 (c). In other words, it is preferable that part of the loop antenna portions 41 a and 41 b protrude beyond the antenna portion 31. If it does in this way, the antenna part 31 and the loop antenna parts 41a and 41b can be combined more strongly, and the communication range of an antenna apparatus can be expanded more.
  • FIGS. 3-1 (c) and 3-2 (d) the configuration in which the magnetic body 33 and the non-magnetic body 43 are overlapped so as to coincide with each other is shown. As long as it is disposed so as to partially overlap the solenoid coil-shaped antenna unit 31, the non-magnetic member 43 may protrude from the magnetic member 33 as shown in FIG. Absent. Even with such a configuration, the same effect as in the case of FIG. 3-2 (d) can be obtained.
  • a rectangular parallelepiped antenna device 20 may be obtained by supplementing a nonmagnetic material directly below.
  • the two loop antenna portions 41a and 41b partially overlap the solenoid coil-shaped antenna portion 31 and are non-magnetic.
  • the solenoid coil-shaped main antenna 30 It is particularly preferable to arrange them symmetrically with respect to the center of the surface, but if the range that cannot be communicated by the solenoid coil-shaped main antenna 30 can be compensated, for example, as shown in FIG. As long as each of the loop antenna portions 41a and 41b partially overlaps the solenoid coil 31, the gap between the two loop antennas may be somewhat shifted from the central portion. Further, as shown in FIG. 3F, the sizes of the loop antenna portions 41a and 41b may not be the same. In this way, the directivity in the specific direction (left direction in FIG. 3-3 (f)) can be enhanced while compensating for the range in which the solenoid coil-shaped main antenna 30 cannot communicate.
  • the communicable area can be expanded as compared with the case of only the solenoid coil-shaped main antenna 30.
  • the non-magnetic material 43 may be provided with four loop antenna portions.
  • each of the four loop antenna portions 41a to 41d is preferably arranged so as to partially overlap the solenoid coil-shaped antenna portion 31. Therefore, as shown in FIG. 4, it is preferable that the four loop antenna portions 41a to 41d are arranged close to the four corners of the surface of the nonmagnetic material 43, respectively.
  • the booster antenna 40 is provided on the surface of the solenoid coil-shaped main antenna 30 in one direction.
  • the booster antenna may be provided on a plurality of surfaces. As shown in FIG. 6, for example, two booster antennas 40 and 50 may be provided on the opposing surfaces of the solenoid coil-shaped main antenna 30 so as to sandwich the antenna portion 31.
  • a plurality of loop antenna portions 41a and 41b are provided on the magnetic body 33 of the solenoid coil-shaped main antenna 30.
  • a magnetic body 43 is laminated.
  • the first non-magnetic body 43 is laminated in a direction (upward direction in FIG. 6) perpendicular to the winding axis direction (left-right direction in FIG. 6) of the solenoid coil-shaped antenna unit 31 in the magnetic body 33. Is done.
  • the first side of the magnetic body 33 opposite to the side where the first non-magnetic body 43 is provided is also provided with a plurality of loop antenna portions 51a and 51b.
  • the solenoid coil-shaped main antenna 30 is sandwiched between the two booster antennas of the first booster antenna 40 and the second booster antenna 50 in the direction perpendicular to the winding axis direction (up and down direction in FIG. 6). It becomes.
  • the communication area of the antenna device 20 can be expanded not only in one direction perpendicular to the winding axis direction but also in the reverse direction.
  • the two booster antennas 40 and 50 are disposed so as to sandwich the solenoid coil-shaped main antenna 30 in a direction perpendicular to the winding axis direction.
  • the booster antennas 40 and 50 can be arranged on any two of the four surfaces of the magnetic body 33 parallel to the winding axis direction of the coiled main antenna 30, respectively. For example, if the booster antennas 40 and 50 are arranged on two adjacent surfaces of the magnetic body 33, the directivity as the antenna device can be improved on the arranged side.
  • the number of booster antennas arranged on the magnetic body 33 is not limited to two, and may be three. Further, four surfaces of the magnetic body 33 excluding two surfaces intersecting with the winding axis of the solenoid coil-shaped main antenna 30 are provided. You may provide in all of. In this way, good communication is possible in the 360 ° direction. In addition, in this modification, it is preferable that the winding direction of each loop antenna part 41a, 41b, 51a, 51b in each booster antenna 40, 50 is the same. Moreover, each booster antenna arrange
  • another booster antenna 60 may be stacked on the booster antenna 40 as shown in FIG.
  • the other booster antenna 60 has, for example, one loop antenna portion 61 formed at the center of the surface of the nonmagnetic material 63. With such a configuration, communication above the central portion of the solenoid coil-shaped main antenna 30 can be improved.
  • the embodiment using the solenoid coil-shaped main antenna as the antenna for reinforcing the booster antenna and the modification thereof have been described.
  • a planar loop coil-shaped antenna section is used instead of the solenoid coil-shaped antenna section.
  • the booster antenna having the above-described configuration may be combined with the loop antenna unit.
  • the booster antenna 40 is laminated thereon. With such a configuration, it is possible to improve the directivity toward the side where the loop antenna unit 71 is disposed and the booster antenna 40 is provided.
  • the antenna device As described above, according to the antenna device according to each embodiment and each modification of the present invention, it is possible to expand the communication area, and according to the IC tag including the antenna device, the communication performance of the IC tag is improved. can do.
  • the main antenna in the antenna device of the present embodiment is composed of a solenoid coil-shaped antenna part, and a ferrite magnetic body having a length of 10 mm, a width of 3 mm, and a thickness of 1.0 mm is used as a magnetic core.
  • a main antenna was manufactured by winding a conductor having a width of 0.2 mm formed of sintered silver on a magnetic core made of a magnetic material for 20 turns at intervals of 0.25 mm to form a coil.
  • a booster antenna is produced by printing a pattern in which two loop antenna parts are wound two turns in the same direction on a nonmagnetic ferrite and printed with a silver paste so that a conductor with a width of 0.2 mm is formed with a spacing of 0.2 mm. did. And the said main antenna and the booster antenna were piled up, and the antenna apparatus was produced.
  • the arrangement of the two loop antennas in the booster antenna was changed for each example.
  • the arrangements of the two loop antenna portions are the arrangements shown in FIGS. 3-1 (c) to 3-3 (f), respectively.
  • the antenna device of the first embodiment has a configuration in which two loop antenna portions are arranged so as to overlap with both ends of the solenoid coil-shaped antenna portion, respectively.
  • the distance between the two loop antenna portions is set to a half of the coil length of the solenoid coil-shaped antenna portion.
  • the antenna device of the second embodiment has a configuration in which two loop antenna portions are arranged so as to overlap with both end portions of the solenoid coil-shaped antenna portion, similarly to the antenna device of the first embodiment. As shown in FIG. 3D (d), the distance between the two loop antenna portions was made smaller than that of the antenna device of the first embodiment.
  • the antenna device of the third embodiment has a configuration in which two loop antenna portions are arranged so as to overlap with both end portions of the solenoid coil-shaped antenna portion, similarly to the antenna device of the first embodiment.
  • the booster antenna is 1.5 times that of the first embodiment and is configured to protrude from the main antenna.
  • the antenna device of the fourth embodiment has a configuration in which two loop antenna portions are arranged so as to overlap and be close to both ends of the solenoid coil-shaped antenna portion, respectively.
  • one loop antenna portion is configured to be larger than the other loop antenna portion.
  • antenna devices of the following comparative examples were also produced.
  • an antenna device of Comparative Example 1 As an antenna device of Comparative Example 1, as shown in FIG. 3-1 (a), an antenna device was produced only from the main antenna without providing a booster antenna.
  • an antenna device of Comparative Example 2 an antenna device was manufactured by superimposing a booster antenna having only one loop antenna portion in the center on a main antenna.
  • the antenna device of Comparative Example 3 has a configuration in which two loop antenna portions are arranged so as to overlap and be close to both ends of the solenoid coil-shaped antenna portion, respectively. Two loop antenna portions were connected in series.
  • the antenna device of Comparative Example 4 has a configuration in which two loop antenna units are arranged so as to overlap and be close to both ends of the solenoid coil-shaped antenna unit, respectively. Two loop antenna portions were wound in opposite directions.
  • the antenna device of Comparative Example 5 has a configuration in which the two loop antenna portions are largely separated so as not to overlap with the solenoid coil-shaped antenna portions.
  • the communication distances of the antenna devices of Examples 1 to 4 and Comparative Examples 1 to 5 described above were evaluated using a Takaya reader / writer TR3-C2-01.
  • the end of the antenna device was A (5 mm from the center), the opposite end B (5 mm from the center), and the communication distance of the center was compared and evaluated.
  • the end portion on the side where the larger one of the two loop antenna portions was disposed was designated as A.
  • Table 1 The results are shown in Table 1.
  • the antenna devices of Examples 1 to 4 having the configuration in which two loop antenna portions are arranged so as to overlap both ends of the solenoid coil-shaped antenna portion do not have a booster antenna.
  • the communication distance was longer at any of the end A, the center, and the end B.
  • Example 2 in which two loop antenna portions were brought closer to each other had a longer communication distance, and Example 3 with a larger booster antenna further increased the communication distance.
  • Example 4 in which only one of the loop antenna portions is enlarged it can be seen that the communication distance on the side where the loop antenna portion is enlarged is increased.
  • the antenna device according to the present invention can improve the communication performance.
  • the antenna device according to the present invention and the IC tag using the antenna device have an expanded communication range, and are useful for application to production process management, article management in a warehouse, and the like.

Abstract

L'invention concerne un dispositif antenne (20) qui comporte : une antenne principale (30) dans laquelle une partie d'antenne (31) comprenant un conducteur est formée sur un corps magnétique (33) ; et une antenne d'amplification (40) dans laquelle une pluralité de parties d'antenne en boucle (41a, 41b) est formée sur la même surface d'un corps non magnétique (43) disposé sur une surface du corps magnétique (33). La pluralité de parties d'antenne en boucle (41a, 41b) est disposée de manière à chevaucher partiellement la partie d'antenne (31) de l'antenne principale (30), et les parties de la pluralité de parties d'antenne en boucle (41a, 41b) sont connectées en parallèle les unes aux autres et sont enroulées dans la même direction les unes que les autres.
PCT/JP2017/020308 2016-06-01 2017-05-31 Dispositif antenne et étiquette ci l'utilisant WO2017209195A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2018520965A JP6881447B2 (ja) 2016-06-01 2017-05-31 アンテナ装置及びそれを用いたｉｃタグ
CN201780048045.8A CN109565113B (zh) 2016-06-01 2017-05-31 天线装置以及使用其的ic标签

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016110339 2016-06-01
JP2016-110339 2016-06-01

Publications (1)

Publication Number Publication Date
WO2017209195A1 true WO2017209195A1 (fr) 2017-12-07

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PCT/JP2017/020308 WO2017209195A1 (fr) 2016-06-01 2017-05-31 Dispositif antenne et étiquette ci l'utilisant

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JP (1) JP6881447B2 (fr)
CN (1) CN109565113B (fr)
TW (1) TWI724172B (fr)
WO (1) WO2017209195A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
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US20180323499A1 (en) * 2015-11-04 2018-11-08 Premo, S.L. An antenna device for hf and lf operation

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CN109565113A (zh) 2019-04-02
CN109565113B (zh) 2021-03-30

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