WO2006077645A1 - アンテナ及びこれを搭載するrfid用タグ - Google Patents
アンテナ及びこれを搭載するrfid用タグ Download PDFInfo
- Publication number
- WO2006077645A1 WO2006077645A1 PCT/JP2005/000826 JP2005000826W WO2006077645A1 WO 2006077645 A1 WO2006077645 A1 WO 2006077645A1 JP 2005000826 W JP2005000826 W JP 2005000826W WO 2006077645 A1 WO2006077645 A1 WO 2006077645A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- rfid tag
- tag
- loop
- lsi chip
- Prior art date
Links
- 239000004020 conductor Substances 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 12
- 230000005672 electromagnetic field Effects 0.000 description 6
- 239000003989 dielectric material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Classifications
-
- 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
-
- 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
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
-
- 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
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07773—Antenna details
- G06K19/07786—Antenna details the antenna being of the HF type, such as a dipole
-
- 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
-
- 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
Definitions
- the present invention relates to an antenna and a tag on which the antenna is mounted, and more particularly to an antenna configured with a loop antenna suitable for a non-contact type tag that performs transmission / reception with an RFID reader / writer and an RFID tag on which the antenna is mounted. .
- RF radio frequency
- a tag attached to an article is composed of an antenna and a functional chip connected to the antenna.
- the communication distance between the tag and the reader / writer depends on the gain of the antenna built into the tag, the operating voltage of the chip, and the surrounding environment, but is about 3 m.
- Non-Patent Document 1 it is explained that when a uniform and common-mode current flows through the circular loop 1 connected to the feed terminal 3, the number of power pattern lobes increases as the loop radius increases.
- Non-Patent Document 1 Antenna Engineering Handbook, P20-22 (issued on March 5, 1999 by Ohmsha)
- the tag used in the RFID system uses the capacitance value C of the interface unit on the L SI chip 20 side and the inductance value of the tag antenna 10 as shown in FIG. Resonance at frequency is the most important for matching between chip 20 and tag antenna 10.
- the tag antenna 10 is housed in a dielectric case as a unit. When used, the antenna must be shaped with sufficient consideration for the dielectric constant and thickness of the dielectric used as the case.
- an object of the present invention is to provide a tag antenna that resonates with an RFID LSI chip having a limited size and a capacitance component, and an RFID tag on which the tag antenna is mounted.
- a first aspect of the antenna according to the present invention that achieves the above-described object includes a feeding terminal, a loop antenna connected to the feeding terminal, and a Pibus conductive path that bypasses the loop of the loop antenna.
- a second aspect of the antenna according to the present invention for achieving the above object is the first aspect, wherein the Pibus conductive path is arranged at a distance S from the center of the loop antenna, and the distance S is large. Further, the inductor by the Pibus conductive path is set so as to have a predetermined inductance value.
- a third aspect of the antenna according to the present invention that achieves the above object is that, in the second aspect, the predetermined inductance value is a capacitance value of an interface portion of an LSI chip connected to the power supply terminal. It is a value that resonates.
- a first aspect of the RFID tag according to the present invention that achieves the above-described object has an LSI chip connected in parallel with the antenna, and the antenna includes a feeding terminal to which the LSI chip is connected; A loop antenna connected to the feed terminal and a Pibus conductive path that bypasses the loop of the loop antenna are provided.
- a second aspect of the RFID tag according to the present invention for achieving the above object is the first aspect of the RFID tag.
- the Pibus conductive path is disposed at a distance S from the center of the loop antenna, and the size of the distance S is set so that an inductor by the Pibus conductive path has a predetermined inductance value. It is characterized by that.
- a third aspect of the RFID tag according to the present invention for achieving the above object is the first aspect of the RFID tag.
- the predetermined inductance value is a value that resonates with the capacitance value of the interface portion of the LSI chip connected to the power supply terminal.
- the antenna is further provided with a dielectric plate disposed on at least one surface side of the antenna and holding the antenna.
- a fifth aspect of the RFID tag according to the present invention that achieves the above object is the first aspect of the RFID tag.
- a through hole is provided in the center of the dielectric plate.
- a sixth aspect of the RFID tag according to the present invention for achieving the above object is the first aspect of the RFID tag.
- the Pibus conductive path has an arc along the periphery of the through hole to avoid the through hole.
- a seventh aspect of the RFID tag according to the present invention that achieves the above object is the first aspect of the RFID tag.
- the dielectric plate has an annular trench having a width and a depth corresponding to the loop antenna and capable of accommodating at least the LSI chip.
- An eighth aspect of the RFID tag according to the present invention that achieves the above-described object is the first aspect of the RFID tag.
- the antenna is characterized in that it is formed on a sheet with a conductor mainly composed of Cu, Ag, or A1.
- FIG. 1 is a diagram for explaining matching between an antenna and an LSI chip.
- FIG. 2 is a diagram for explaining a conventional loop antenna.
- FIG. 3 is a diagram for explaining the configuration principle of the antenna according to the present invention.
- Fig. 4 is a graph showing the relationship between the inductance value L and the distance S from the center of the loop antenna 1 to the bypass conductive wire 2.
- FIG. 5 is a diagram showing a first embodiment according to the principle of the present invention shown in FIG.
- FIG. 6 is an example considering the structure for attaching RFID tags to articles.
- FIG. 7 is an embodiment that considers the structure for attaching RFID tags to articles compared to the embodiment of Fig. 5.
- FIG. 8 shows an example in which the LSI chip is integrated with the tag antenna.
- FIG. 9 is a diagram showing still another embodiment configuration.
- FIG. 10 is a diagram showing an embodiment in which a dielectric is formed only on one side of the tag antenna.
- FIG. 11 is a diagram showing antenna directivity obtained by electromagnetic field simulation of the antenna according to the present invention.
- FIG. 12 is a diagram showing the definitions of the triaxial directions X, y, and z in Fig. 11.
- FIG. 3 the loop antenna 1 connected to the feed terminal 3 is formed. Further, a bypass conductive line is formed inside the loop antenna 1 as the matching inductor L. Furthermore, in Fig. 3, S is the distance from the center of the loop antenna 1 where the bypass conductive wire 2 is formed, and the inductance value parameter (S) of the bypass conductive wire 2 according to the size of the distance S Changes.
- FIG. 4 is a graph showing the relationship between the inductance value L and the distance S from the center of the loop antenna 1 to the bypass conductive line 2. The numerical values shown in Fig.
- the inductance value L changes depending on the distance S from the center of the loop antenna 1. Therefore, by selecting the distance S appropriately, the inductance value L of the tag antenna 10 that matches the capacitance value C of the interface part of the LSI chip 20 can be set.
- the capacitance value of the capacitor C of the LSI chip 20 to be matched is C
- the inventors of the present invention have determined that the size of the tag antenna 10 is 33 mm as the outermost outer shape, Cu is used as the conductor material, the thickness is 20 ⁇ , and the line width is 2 mm. It is confirmed that the resistance value of the parallel resistance Ra of the antenna is about 1000 ⁇ . Therefore, even if the real part resistance Rc of the LSI chip 20 is about 1000 ⁇ – 2000 ⁇ , for example, sufficient matching can be achieved.
- FIG. 5 is a diagram showing a first embodiment according to the principle of the present invention shown in FIG. Fig. 5A is a plan view, and Fig. 5B is a central cross-sectional view.
- dielectric plates 4 and 5 are arranged above and below the antenna plane of the tag antenna 10 composed of the loop antenna 1 and the bypass conductive wire 2, and the shape of the tag antenna 10 is held between them. .
- the dielectric plates 4 and 5 are attached to the tag antenna by, for example, a resin adhesive.
- This embodiment corresponds to the principle diagram of FIG. 3, and a loop antenna 1 connected to the feeding terminal 3
- the bypass conductive wire 2 is connected from the middle of the line, and an inductance L component is formed.
- the outer dimensions of the loop antenna 1 were 33 mm, Cu was used as the conductor material, the thickness was 20 / im, and the line width was 2 mm.
- Figure 6 is an example that addresses the need to make a difference.
- a through hole 6 is formed in the center of the RFID tag. It is possible to attach a tag to an article using this through hole 6.
- the bypass conductive wire 2 is formed so as to have an arc 2a along the periphery of the through hole 6 that avoids the through hole 6.
- This arc 2a is fixed, and the electromagnetic field simulation is performed using the distance S to the straight conductive wire portion of the bypass conductive wire 2 as a parameter.
- the conductor width is 2mm
- the distance S is greater than (radius of through-hole 6 + conductor width) (ie, S>
- FIG. 7 shows an embodiment in which a through hole 6 is further provided.
- the radius of the through hole 6 is determined from the center of the loop antenna 1 of the bypass conductive wire 2. By making it smaller than the distance S, the arc 2a shown in FIG.
- Figure 8 shows an example configuration corresponding to the strong demand.
- FIG. 8 is a diagram in which the tag antenna 10 and the LSI chip 20 having the configuration related to the dielectric plate 5 are mounted.
- FIG. 8B shows a dielectric plate 4, which has an annular groove 30 corresponding to the loop antenna 1 as a feature.
- the trench 30 has a width and depth that can accommodate at least an LSI chip 20 having a chip thickness of about 0.5 mm. Therefore, the dielectric plate 5 and the LSI chip 20 connected to the tag antenna 10 and the dielectric plate 4 can be stacked together in this order as shown in Fig. 8C.
- FIG. 9 shows still another embodiment configuration.
- the tag antenna 10 composed of the loop antenna 1 and the bypass conductor 2 is prepared by forming Cu, on a very thin sheet 40 (for example, 0.1 mm) such as paper or PET (polyethylene sheet). It can be formed of a thin conductor made of Ag, A1, etc. (eg, 20 xm thickness). Alternatively, instead of thin conductors, wire conductors can be used.
- FIG. 11 is a diagram showing antenna directivity characteristics obtained by electromagnetic field simulation of the antenna according to the present invention.
- the triaxial directions x, y, and z are defined as shown in Fig. 12, and the angle from the X axis in the x and y planes is ⁇ and the angle from the z axis is ⁇ .
- ⁇ 90. That is, the angle from the z-axis in the y-axis direction ⁇ force S90 ° and one 90. Is shown to have the maximum directivity.
- the antenna according to the present invention has preferable directivity characteristics. Therefore, when an RFID tag equipped with the antenna of the present invention is used as an RFID tag, it can be applied to an article such as an animal, and the range of application is wide. According to the present invention, it is possible to supply a tag antenna that resonates with an RFID LSI chip having a capacitance component and an RFID tag on which it is mounted within a very limited area of about 35 mm in diameter.
- the present invention relates to the arrangement of the bypass conductive path constituting the inductor having the inductance L that resonates with the capacitance C of the interface portion of the LSI chip, the dielectric constant and the thickness of the dielectric plate, which are calculated in advance. It is possible to easily determine the optimum dimension according to the above.
- the upper and lower dielectrics can be easily overlapped at any position in the manufacturing process.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Details Of Aerials (AREA)
- Aerials With Secondary Devices (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/000826 WO2006077645A1 (ja) | 2005-01-24 | 2005-01-24 | アンテナ及びこれを搭載するrfid用タグ |
EP05709270A EP1843431A4 (en) | 2005-01-24 | 2005-01-24 | ANTENNA AND IDENTIFIED RFID BRAND |
CN2005800470491A CN101107750B (zh) | 2005-01-24 | 2005-01-24 | 天线及安装有该天线的射频识别标签 |
JP2006553801A JP4676445B2 (ja) | 2005-01-24 | 2005-01-24 | アンテナ及びこれを搭載するrfid用タグ |
US11/826,610 US7667658B2 (en) | 2005-01-24 | 2007-07-17 | Antenna and RFID tag with same mounted |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2005/000826 WO2006077645A1 (ja) | 2005-01-24 | 2005-01-24 | アンテナ及びこれを搭載するrfid用タグ |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/826,610 Continuation US7667658B2 (en) | 2005-01-24 | 2007-07-17 | Antenna and RFID tag with same mounted |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006077645A1 true WO2006077645A1 (ja) | 2006-07-27 |
Family
ID=36692043
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/000826 WO2006077645A1 (ja) | 2005-01-24 | 2005-01-24 | アンテナ及びこれを搭載するrfid用タグ |
Country Status (5)
Country | Link |
---|---|
US (1) | US7667658B2 (ja) |
EP (1) | EP1843431A4 (ja) |
JP (1) | JP4676445B2 (ja) |
CN (1) | CN101107750B (ja) |
WO (1) | WO2006077645A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7408467B2 (en) | 2005-07-08 | 2008-08-05 | Fujitsu Limited | Antenna and RFID tag mounting the same |
JP2013510487A (ja) * | 2009-11-09 | 2013-03-21 | タイム・リバーサル・コミュニケーションズ | 電磁波を送受信するためのデバイス、そのデバイスを備えたシステム、及びそのようなデバイスの使用 |
JP2014007504A (ja) * | 2012-06-22 | 2014-01-16 | Fujitsu Ltd | アンテナおよびrfidタグ |
WO2014064839A1 (ja) | 2012-10-26 | 2014-05-01 | 富士通フロンテック株式会社 | タグアクセス装置 |
WO2022114084A1 (ja) | 2020-11-27 | 2022-06-02 | 大王製紙株式会社 | Rfidタグ、採血管、及びアンテナ |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011114633A (ja) * | 2009-11-27 | 2011-06-09 | Fujitsu Ltd | アンテナ装置、及びアンテナ装置を含むシステム |
CN101916911B (zh) * | 2010-07-16 | 2013-01-02 | 江苏安特耐科技有限公司 | 一种用于移动通信的宽频带定向天线 |
KR20150046240A (ko) * | 2012-08-22 | 2015-04-29 | 네스텍 소시에테아노님 | 데이터 저장 및 통신 수단들을 갖는 캡슐 어셈블리들 |
TWI499129B (zh) * | 2012-11-23 | 2015-09-01 | Ind Tech Res Inst | 物流系統、無線射頻辨識標籤及其天線 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55150507U (ja) * | 1979-04-17 | 1980-10-30 | ||
JPH08195611A (ja) * | 1995-01-18 | 1996-07-30 | Kubota Corp | 受信用面状アンテナ装置 |
JP2002188754A (ja) * | 2000-12-22 | 2002-07-05 | Hanex Co Ltd | 弁開閉検知装置及び弁開閉管理システム |
JP2003198231A (ja) * | 2001-12-28 | 2003-07-11 | Ntn Corp | 誘電性樹脂フィルムアンテナおよび情報記録タグ |
JP2004295907A (ja) * | 2004-05-18 | 2004-10-21 | Hitachi Maxell Ltd | 非接触通信式情報担体 |
Family Cites Families (18)
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JPS55150507A (en) | 1979-05-14 | 1980-11-22 | Mitsubishi Electric Corp | Contactor for switch |
JPH088446B2 (ja) | 1989-08-23 | 1996-01-29 | 株式会社村田製作所 | マイクロストリップアンテナ |
US5776278A (en) * | 1992-06-17 | 1998-07-07 | Micron Communications, Inc. | Method of manufacturing an enclosed transceiver |
JPH07271951A (ja) | 1994-03-30 | 1995-10-20 | Toshiba Corp | 顔画像撮影装置および自動受付け装置 |
JPH10308620A (ja) * | 1997-05-08 | 1998-11-17 | Harada Ind Co Ltd | Gps波用フィルムアンテナ装置 |
JPH1188034A (ja) * | 1997-09-04 | 1999-03-30 | Harada Ind Co Ltd | Gps波用アンテナ装置 |
DE69812814T2 (de) * | 1997-09-19 | 2003-12-18 | Kabushiki Kaisha Toshiba, Kawasaki | Vorrichtung zur Ausgabe von kontaktlosen Datenträgern |
US6404643B1 (en) * | 1998-10-15 | 2002-06-11 | Amerasia International Technology, Inc. | Article having an embedded electronic device, and method of making same |
US6285342B1 (en) * | 1998-10-30 | 2001-09-04 | Intermec Ip Corp. | Radio frequency tag with miniaturized resonant antenna |
JP2001203529A (ja) | 2000-01-21 | 2001-07-27 | Matsushita Electric Ind Co Ltd | アンテナ及びアンテナ装置及び電子機器 |
FR2808648B1 (fr) * | 2000-05-03 | 2004-07-30 | Schlumberger Systems & Service | Antenne pour carte a circuit integre et procede d'ajustement de l'inductance d'une telle antenne |
US20040227681A1 (en) * | 2003-05-14 | 2004-11-18 | Inpaq Technology Co., Ltd. | Signal receiving antenna for the system of GPS etc. |
US7457227B2 (en) * | 2003-08-06 | 2008-11-25 | Sony Corporation | Optical disc |
JP4198090B2 (ja) | 2004-05-31 | 2008-12-17 | マスプロ電工株式会社 | アンテナ装置 |
JP4249090B2 (ja) | 2004-05-31 | 2009-04-02 | マスプロ電工株式会社 | ループアンテナ及びアンテナ装置 |
US7183994B2 (en) * | 2004-11-22 | 2007-02-27 | Wj Communications, Inc. | Compact antenna with directed radiation pattern |
JP4286813B2 (ja) * | 2005-07-08 | 2009-07-01 | 富士通株式会社 | アンテナ及びこれを搭載するrfid用タグ |
JP4877271B2 (ja) | 2008-05-01 | 2012-02-15 | Tdk株式会社 | 単結晶育成用ルツボ |
-
2005
- 2005-01-24 EP EP05709270A patent/EP1843431A4/en not_active Withdrawn
- 2005-01-24 WO PCT/JP2005/000826 patent/WO2006077645A1/ja active Application Filing
- 2005-01-24 CN CN2005800470491A patent/CN101107750B/zh not_active Expired - Fee Related
- 2005-01-24 JP JP2006553801A patent/JP4676445B2/ja not_active Expired - Fee Related
-
2007
- 2007-07-17 US US11/826,610 patent/US7667658B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55150507U (ja) * | 1979-04-17 | 1980-10-30 | ||
JPH08195611A (ja) * | 1995-01-18 | 1996-07-30 | Kubota Corp | 受信用面状アンテナ装置 |
JP2002188754A (ja) * | 2000-12-22 | 2002-07-05 | Hanex Co Ltd | 弁開閉検知装置及び弁開閉管理システム |
JP2003198231A (ja) * | 2001-12-28 | 2003-07-11 | Ntn Corp | 誘電性樹脂フィルムアンテナおよび情報記録タグ |
JP2004295907A (ja) * | 2004-05-18 | 2004-10-21 | Hitachi Maxell Ltd | 非接触通信式情報担体 |
Non-Patent Citations (1)
Title |
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See also references of EP1843431A4 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7408467B2 (en) | 2005-07-08 | 2008-08-05 | Fujitsu Limited | Antenna and RFID tag mounting the same |
JP2013510487A (ja) * | 2009-11-09 | 2013-03-21 | タイム・リバーサル・コミュニケーションズ | 電磁波を送受信するためのデバイス、そのデバイスを備えたシステム、及びそのようなデバイスの使用 |
JP2014007504A (ja) * | 2012-06-22 | 2014-01-16 | Fujitsu Ltd | アンテナおよびrfidタグ |
US9010648B2 (en) | 2012-06-22 | 2015-04-21 | Fujitsu Limited | Antenna and RFID tag |
WO2014064839A1 (ja) | 2012-10-26 | 2014-05-01 | 富士通フロンテック株式会社 | タグアクセス装置 |
US10176348B2 (en) | 2012-10-26 | 2019-01-08 | Fujitsu Frontech Limited | Tag access apparatus |
WO2022114084A1 (ja) | 2020-11-27 | 2022-06-02 | 大王製紙株式会社 | Rfidタグ、採血管、及びアンテナ |
Also Published As
Publication number | Publication date |
---|---|
JP4676445B2 (ja) | 2011-04-27 |
US7667658B2 (en) | 2010-02-23 |
US20070279313A1 (en) | 2007-12-06 |
CN101107750A (zh) | 2008-01-16 |
CN101107750B (zh) | 2011-04-13 |
JPWO2006077645A1 (ja) | 2008-06-12 |
EP1843431A1 (en) | 2007-10-10 |
EP1843431A4 (en) | 2009-04-15 |
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