JP2005252853A - Antenna for rf-id - Google Patents

Antenna for rf-id Download PDF

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Publication number
JP2005252853A
JP2005252853A JP2004062751A JP2004062751A JP2005252853A JP 2005252853 A JP2005252853 A JP 2005252853A JP 2004062751 A JP2004062751 A JP 2004062751A JP 2004062751 A JP2004062751 A JP 2004062751A JP 2005252853 A JP2005252853 A JP 2005252853A
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Japan
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antenna
information
frequency
writing
ic chip
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Yoshiaki Ide
Hideki Kobayashi
Kiichiro Ogawa
Shiro Sugimura
Hironari Takahashi
義章 井手
喜一郎 小川
英樹 小林
詩朗 杉村
裕也 高橋
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Fec Inc
Toppan Forms Co Ltd
トッパン・フォームズ株式会社
株式会社エフ・イー・シー
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Priority to JP2004062751A priority Critical patent/JP2005252853A/en
Publication of JP2005252853A publication Critical patent/JP2005252853A/en
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    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/067Record 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
    • G06K19/07Record 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
    • G06K19/0723Record 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 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs
    • G06K19/0724Record 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 the record carrier comprising an arrangement for non-contact communication, e.g. wireless communication circuits on transponder cards, non-contact smart cards or RFIDs the arrangement being a circuit for communicating at a plurality of frequencies, e.g. for managing time multiplexed communication over at least two antennas of different types
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/067Record 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
    • G06K19/07Record 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
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional 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
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/067Record 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
    • G06K19/07Record 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
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional 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
    • G06K19/07766Constructional 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 comprising at least a second communication arrangement in addition to a first non-contact communication arrangement
    • G06K19/07767Constructional 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 comprising at least a second communication arrangement in addition to a first non-contact communication arrangement the first and second communication means being two different antennas types, e.g. dipole and coil type, or two antennas of the same kind but operating at different frequencies
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/067Record 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
    • G06K19/07Record 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
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional 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
    • G06K19/07773Antenna details
    • G06K19/07777Antenna details the antenna being of the inductive type
    • G06K19/07779Antenna details the antenna being of the inductive type the inductive antenna being a coil
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/067Record 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
    • G06K19/07Record 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
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional 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
    • G06K19/07773Antenna details
    • G06K19/07777Antenna details the antenna being of the inductive type
    • G06K19/07779Antenna details the antenna being of the inductive type the inductive antenna being a coil
    • G06K19/07783Antenna details the antenna being of the inductive type the inductive antenna being a coil the coil being planar
    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06Record 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
    • G06K19/067Record 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
    • G06K19/07Record 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
    • G06K19/077Constructional details, e.g. mounting of circuits in the carrier
    • G06K19/07749Constructional 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
    • G06K19/07773Antenna details
    • G06K19/07786Antenna details the antenna being of the HF type, such as a dipole

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna for an RF-ID connected with an IC chip capable of writing and reading information using a plurality of frequencies, which can resonate with an arbitrary frequency among the plurality of frequencies with which the information can be written/read by the IC chip. <P>SOLUTION: An antenna part 111 resonating with a frequency of 13.56 MHz, an antenna part 112 resonating with a frequency of 2.45 GHz, and an antenna part 113 resonating with a frequency of 950 MHz are formed on a base material 102 so that they are connected with lands 103a and 103b with the IC chip 101 connected. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、非接触型ICカード等のRF−IDに用いられるRF−ID用アンテナに関し、特に、複数の周波数を用いて情報の書き込み及び読み出しが可能なICチップが搭載されたRF−IDに用いられるRF−ID用アンテナに関する。 The present invention relates to a RF-ID antenna for use in RF-ID, such as a contactless IC card, in particular, the RF-ID of writing and reading an IC chip capable of information is mounted using a plurality of frequencies antenna relates for RF-ID used.

昨今、情報化社会の進展に伴って、情報をカードに記録し、該カードを用いた情報管理や決済等が行われている。 Recently, with the development of the information society, recording information on the card, information management and payment or the like using the card is made. また、商品等に貼付されるラベルやタグに情報を記録し、このラベルやタグを用いての商品等の管理も行われている。 Also, record the information on a label or tag which is affixed to the product or the like, is also performed management of goods etc. by using the labels or tags.

このようなカードやラベル、あるいはタグを用いた情報管理においては、カードやラベル、あるいはタグに対して非接触状態にて情報の書き込み及び読み出しを行うことが可能なICが搭載された非接触型ICカードや非接触型ICラベル、あるいは非接触型ICタグ等といったRF−IDがその優れた利便性から急速な普及が進みつつある。 Such cards and labels or in the information management using tags, cards or labels or non-contact type IC capable of writing and reading information in a non-contact state is mounted to the tag, IC cards and non-contact type IC label, or RF-ID, such as non-contact IC tag or the like is becoming rapidly widespread advances to its excellent convenience.

図4は、従来の非接触型ICタグの一例を示す図である。 Figure 4 is a diagram showing an example of a conventional non-contact IC tag.

本従来例は図4に示すように、樹脂や紙等からなるベース基材502上に、導電性のアンテナ510がコイル状に形成されており、このアンテナ510に接続されるように、非接触状態にて情報の書き込み及び読み出しが可能なICチップ501が搭載されて構成されている。 This conventional example as shown in FIG. 4, on a base substrate 502 made of a resin or paper, conductive antenna 510 is formed in a coil shape, so as to be connected to the antenna 510, the non-contact IC chip 501 writing and reading that are capable of information is constructed by mounting in the state. なお、ICチップ501においては、13.56MHzの周波数帯にて情報の書き込み及び読み出しが可能なものであり、そのため、アンテナ510は、13.56MHzの周波数に共振するような長さ及び巻き数に設計されている。 Note that in the IC chip 501 are those capable of writing and reading of data at 13.56MHz frequency band, therefore, the antenna 510, the length and number of windings such that the resonant frequency of 13.56MHz It has been designed.

上記のように構成された非接触型ICタグ500においては、13.56MHzの周波数帯にて情報の書き込み及び読み出しを行う情報書込/読出装置(不図示)に近接させることにより、情報書込/読出装置からの電磁誘導によりアンテナ部510に電流が流れ、この電流がICチップ501に供給され、それにより、非接触状態において、情報書込/読出装置からICチップ501に情報が書き込まれたり、ICチップ501に書き込まれた情報が情報書込/読出装置にて読み出されたりする。 In the non-contact IC tag 500 configured as described above, by proximity to the information writing / reading device for writing and reading information at 13.56MHz frequency band (not shown), information writing / current flows through the antenna unit 510 by electromagnetic induction from the reader, the current is supplied to the IC chip 501, whereby or in a non-contact state, information from the information writing / reading device to the IC chip 501 is written , information written in the IC chip 501 or read by the information writing / reading device.

また、近年においては、小型化及び通信可能距離を確保するために、2.45GHzの周波数帯を利用して通信を行う微細なICチップを用いたRF−IDが利用されはじめている。 Further, in recent years, in order to ensure miniaturization and communicable distance, RF-ID using a fine IC chip that performs communication using a 2.45GHz frequency band has begun to be utilized. このような微細なICチップを用いたRF−IDにおいては、導電性のアンテナを接続することによりICチップの通信可能距離を延ばすことができる。 In such RF-ID using a fine IC chip, it is possible to extend the communication distance of the IC chip by connecting the conductive antenna.

図5は、2.45GHzの周波数帯を利用して通信を行うICチップが搭載された非接触型ICタグの一例を示す図である。 Figure 5 is a diagram showing an example of a non-contact IC tag with an IC chip mounted that performs communication using a 2.45GHz frequency band.

本従来例は図5に示すように、樹脂や紙等からなるベース基材602上に、互いに直列に並ぶように所定の間隔を有して形成された2つの帯状の導体610a,610bからなるアンテナ部610が形成されており、この2つの導体610a,610bに接続されるように、非接触状態にて情報の書き込み及び読み出しが可能なICチップ601が搭載されて構成されている。 This conventional example as shown in FIG. 5, on the base substrate 602 made of a resin or paper, consisting of two strip-shaped conductors 610a, 610b which are formed with a predetermined gap so as to align in series with one another antenna unit and 610 is formed, the two conductors 610a, to be connected to the 610b, IC chip 601 writes and reads information in a non-contact state is capable of being configured are mounted. なお、ICチップ601においては、2.45GHzの周波数帯にて情報の書き込み及び読み出しが可能なものであり、そのため、アンテナ部610の長さは、2.45GHzの周波数に共振するように設計されている。 Note that in the IC chip 601 are those capable of writing and reading of data at 2.45GHz frequency band, therefore, the length of the antenna unit 610 is designed to resonate in the 2.45GHz frequency ing.

上記のように構成された非接触型ICタグ600においては、2.45GHzの周波数帯にて情報の書き込み及び読み出しを行う情報書込/読出装置(不図示)に近接させることにより、情報書込/読出装置からの電波によりアンテナ部610に電流が流れ、この電流がICチップ601に供給され、それにより、非接触状態において、情報書込/読出装置からICチップ601に情報が書き込まれたり、ICチップ601に書き込まれた情報が情報書込/読出装置にて読み出されたりする。 In the non-contact IC tag 600 constructed as described above, by proximity to the information writing / reading device for writing and reading information at 2.45GHz frequency band (not shown), information writing / radio waves from the reader a current flows through the antenna section 610, the current is supplied to the IC chip 601, whereby the non-contact state, information from the information writing / reading device to the IC chip 601 is written or, information written to the IC chip 601 or read by the information writing / reading device.

また、従来より、二等辺三角形からなる2つの導体が、その頂点が空隙を介して互いに対向するように配置されてなるボウタイアンテナが利用されている。 Further, conventionally, two conductors consisting of isosceles triangle, bowtie antennas that vertex is disposed so as to face each other across the air gap is utilized.

図6は、一般的なボウタイアンテナを有する非接触型ICタグの一例を示す図である。 Figure 6 is a diagram showing an example of a non-contact type IC tag having a general bowtie antenna.

本従来例は図6に示すように、樹脂や紙等からなるベース基材702上に、二等辺三角形の形状を有する2つの導体710a,710bが、二等辺三角形の等しい辺がなす頂点どうしを結んだ直線が二等辺三角形の底辺のそれぞれに対して垂直となるように、かつ、頂点どうしが空隙を有するように配置されてなるアンテナ部710が形成されており、この2つの導体710a,710bに接続されるように、非接触状態にて情報の書き込み及び読み出しが可能なICチップ701が搭載されて構成されている。 This conventional example as shown in FIG. 6, on the base substrate 702 made of a resin or paper, two conductors 710a having the shape of an isosceles triangle, 710b is, the vertex each other forming equal sides of an isosceles triangle as connecting it straight line perpendicular to the respective base of the isosceles triangle, and the vertex each other are an antenna portion 710 formed by arranged to have a gap formed, the two conductors 710a, 710b as connected, the writing and reading of data in a non-contact state capable IC chip 701 is configured to be mounted on.

上記のように構成された非接触型ICタグ700においては、外部に設けられた情報書込/読出装置(不図示)に近接させることにより、情報書込/読出装置からの電磁誘導によりアンテナ部710に電流が流れ、この電流がICチップ701に供給され、それにより、非接触状態において、情報書込/読出装置からICチップ701に情報が書き込まれたり、ICチップ701に書き込まれた情報が情報書込/読出装置にて読み出されたりする。 In the non-contact IC tag 700 configured as described above, by proximity to the information writing / reading device provided outside (not shown), an antenna unit by electromagnetic induction from the information writing / reading device 710 current flows, the current is supplied to the IC chip 701, thereby, in the non-contact state, or information is written to the IC chip 701 from the information writing / reading device, the information written to the IC chip 701 or read by the information writing / reading device.

ここで、上述した非接触型ICタグ700においては、図6中の、B−B'間と、C−C'間とでアンテナ部710の長さが異なるため、B−B'間の長さと、C−C'間の長さとのそれぞれに応じた共振点が存在することになる。 Here, in the non-contact IC tag 700 described above, in FIG. 6, B-B 'and between, C-C' for the length of the antenna portion 710 and between different, B-B 'length between Sato, so that the resonance point exists in accordance with each of the length between C-C '. さらに、アンテナ部710を構成する2つの導体710a,710bがそれぞれ二等辺三角形の形状を有するものであるため、アンテナ部710の長さは、B−B'間からC−C'間に渡って無段階に変化している。 Further, since the antenna unit 710 two conductors 710a constituting the, 710b are those each having a shape of an isosceles triangle, the length of the antenna 710, over 'from between C-C' B-B between It is varied continuously. これにより、ICチップ701に対する情報の書き込み及び読み出しを行うために決められた周波数に対して実際の周波数が多少ずれた場合であっても、ICチップ701に対する情報の書き込み及び読み出しを行うことができるようになる。 Accordingly, even when the slightly shift the actual frequency relative frequency determined for writing and reading of data to the IC chip 701, it is possible to perform the writing and reading of data to the IC chip 701 so as to.

また、このようなボウタイアンテナにおいて、二等辺三角形の等しい辺の形状を曲線状や階段状にすることにより、下限周波数を下げ、それによりさらなる広帯域なアンテナが考えられている(例えば、特許文献1参照。)。 Further, in such a bow-tie antenna, by the shape of the equal sides of an isosceles triangle in a curved shape or stepped shape, decreases the minimum frequency, it further broadband antenna is considered by (e.g., Patent Document 1 reference.).
特開2002−135037号公報 JP 2002-135037 JP

上述したように近年においてはRF−IDが急速に普及しており、その通信周波数として、上述した13.56MHz及び2.45GHz、さらには、950MHzといった互いに異なるものが利用されている。 In recent years, as described above is spread rapidly RF-ID, as the communication frequency, above 13.56MHz and 2.45 GHz, further, differ from each other are used, such as 950 MHz.

例えば、航空手荷物に装着される非接触型ICタグにおいては、日本では13.56MHzの周波数帯を用いて通信を行うものが利用され、また、米国においてはUHF帯や2.45GHzの周波数帯を用いて通信を行うものが利用されている。 For example, in a non-contact IC tag that is attached to the airline baggage, in Japan it is utilized to perform communication using the 13.56MHz frequency band, also a frequency band of the UHF band and 2.45GHz in US It performs communication using is utilized. そのため、それぞれの周波数に応じた非接触型ICタグを用意しなければならず、1つの非接触型ICタグに対して複数の周波数を用いて情報の書き込み及び読み出しを行うことができるものが望まれていた。 Therefore, it is necessary to prepare a non-contact IC tag according to the respective frequencies, which can perform writing and reading of data by using a plurality of frequencies for one non-contact type IC tag Nozomu rarely we have had.

また、RF−IDは、非接触型ICタグや非接触型ICラベル、あるいは非接触型ICタグといった様々な形態として用いられ、その用途も様々である。 Also, RF-ID is a non-contact type IC tags and non-contact type IC label, or used as various forms such as non-contact IC tag, its application is also different. ここで、13.56MHzの周波数帯を用いて通信を行う場合、指向性が広いという利点がある反面、通信距離を長くすることが困難であるという欠点がある。 Here, when performing communication using a frequency band of 13.56 MHz, although there is an advantage that a wide directivity, there is a disadvantage that it is difficult to increase the communication distance. また、2.45GHzの周波数帯を用いて通信を行う場合、通信距離を容易に長くすることができるという利点がある反面、指向性が強く、また、アンテナに水分が付着した場合にその影響を受けやすいという欠点がある。 Also, when communication is performed using 2.45GHz frequency band, although there is an advantage that the communication distance can be easily extended, directivity is strong, also the effect when moisture is attached to the antenna there is a disadvantage that vulnerable.

そのため、上述したような利点及び欠点を鑑みて、その用途に応じて、13.56MHzの周波数帯を用いて通信を行うRF−IDと、2.45MHzの周波数帯を用いて通信を行うRF−IDとを使い分けることが求められるが、1つのRF−IDに対して複数の周波数を用いて通信を行うことができれば、複数のRF−IDをその用途に応じて使い分ける必要がなくなる。 Therefore, in view of the advantages and disadvantages as described above, depending on the application, performs the RF-ID communication is performed using a frequency band of 13.56 MHz, the communication using the frequency band of 2.45 MHz RF- it is required to selectively use the ID, but if it is possible to perform communication using a plurality of frequencies for one RF-ID, it is not necessary to selectively use according plurality of RF-ID on the application.

また、上述したようなボウタイアンテナを用いた場合は、ICチップに対する情報の書き込み及び読み出しを行うために決められた周波数に対して実際の周波数が多少ずれた場合であってもICチップに対する情報の書き込み及び読み出しを行うことができるものの、13.56MHzと2.45GHzというように周波数帯が大きく異なる場合、対応することができない。 In the case of using the bowtie antenna as described above, the information from or to the IC chip even if the slightly shift the actual frequency relative frequency determined for writing and reading of data to the IC chip although it is possible to perform writing and reading, when the frequency band and so 13.56MHz and 2.45GHz differ greatly, can not cope with.

本発明は、上述したような従来の技術が有する問題点に鑑みてなされたものであって、複数の周波数を用いて情報の書き込み及び読み出しが可能なICチップに接続されるRF−ID用アンテナであって、ICチップにて情報の書き込み及び読み出しが可能な複数の周波数のうち任意の周波数に共振することができるRF−ID用アンテナを提供することを目的とする。 The present invention was made in view of the problems of the prior art as described above, an antenna for RF-ID, which is connected to the IC chip capable of writing and reading information by using a plurality of frequencies a is, and an object thereof is to provide an antenna for RF-ID which can resonate at any frequency among a plurality of frequencies that can be written and read information in an IC chip.

上記目的を達成するために本発明は、 To accomplish the above object,
複数の周波数を用いて情報の書き込み及び読み出しが可能なICチップに接続されるRF−ID用アンテナであって、 An antenna for a RF-ID that is connected to the information writing and reading an IC chip capable by using a plurality of frequencies,
互いに異なる周波数で共振する複数のアンテナ部が、それぞれ前記ICチップに接続可能に同一平面上に形成されている。 A plurality of antenna units to resonate at different frequencies, are formed respectively on the connectable coplanar to the IC chip.

また、前記複数のアンテナ部は、JISX6301に規定されるカードサイズ以下の領域に形成されていることを特徴とする。 The plurality of antenna units is characterized in that it is formed in the following areas card size defined in JISX6301.

上記のように構成された本発明においては、複数の周波数を用いて情報の書き込み及び読み出しが可能なICチップに対して情報の書き込みあるいは読み出しを行う場合、このICチップに接続されて同一平面上に形成された複数のアンテナ部のうち、情報の書き込みあるいは読み出しを行うための周波数に共振するアンテナ部が共振し、そのアンテナ部を介してICチップに対する情報の書き込みあるいは読み出しが行われる。 In the present invention configured as described above, when writing or reading of information to the IC chip capable of writing and reading information by using a plurality of frequencies, on the same plane is connected to the IC chip among the plurality of antenna units formed in the antenna unit resonates that resonates with the frequency for writing or reading information, write or read information to the IC chip is performed through the antenna unit.

以上説明したように本発明においては、複数の周波数を用いて情報の書き込み及び読み出しが可能なICチップに接続されるRF−ID用アンテナにおいて、互いに異なる周波数で共振する複数のアンテナ部が、それぞれICチップに接続可能に同一平面上に形成されているため、このICチップに対して情報の書き込みあるいは読み出しを行う任意の周波数に共振することができる。 Or In the present invention, as described, in the antenna for RF-ID of the writing and reading of data are connected to the IC chip capable by using a plurality of frequencies, a plurality of antenna units which resonates at a different frequency from each other, respectively because it is formed on the connectable to flush the IC chip, it can resonate at any frequency for writing or reading information to the IC chip.

また、複数のアンテナ部が、JISX6301に規定されるカードサイズ以下の領域に形成されているものにおいては、このRF−ID用アンテナを非接触型ICカードに適用することができる。 The plurality of antenna units is, in what is formed in the following areas card size defined in JISX6301, it can be applied to the RF-ID antenna in the non-contact type IC card.

以下に、本発明の実施の形態について図面を参照して説明する。 It will be described below with reference to the drawings, embodiments of the present invention.

図1は、本発明のRF−ID用アンテナの実施の一形態が適用された非接触型ICタグの構成を示す図である。 Figure 1 is a diagram showing a configuration of a non-contact IC tag to which an embodiment of the RF-ID antenna of the present invention is applied.

本形態は図1に示すように、樹脂や紙等からなるベース基材102上に、導電性材料からなるコイル状のアンテナ部111と、アンテナ部111を取り囲むように互いに所定の間隔を有して形成された2つのL字型の導体112a,112bからなるアンテナ部112と、アンテナ部112の外部にて所定の間隔を有して形成された2つの導体113a,113bからなるアンテナ部113と、アンテナ部111〜113に接続された2つのランド部103a,103bとが形成され、このランド部103a,103bに接続されるようにICチップ101が搭載されて構成されている。 This embodiment, as shown in FIG. 1, has on the base substrate 102 made of a resin or paper, a coil-shaped antenna portion 111 made of a conductive material, a predetermined distance from each other so as to surround the antenna portion 111 two L-shaped conductors 112a formed Te, an antenna unit 112 consisting 112b, two conductors 113a formed with a predetermined gap in the outside of the antenna unit 112, an antenna unit 113 consisting 113b , the antenna unit 111 to 113 two which are connected to the land portions 103a, 103b and is formed, the land portion 103a, the IC chip 101 to be connected to 103b are formed is mounted.

ICチップ101は、アンテナ部111〜113を介して非接触状態にて情報の書き込み及び読み出しが可能に構成されたものであって、13.56MHz〜2.45GHzの周波数に同期するクロックジェネレータ(不図示)が内部に設けられており、アンテナ部111〜113を介して信号が受信された場合にその信号の周波数に同期したクロックが発生し、このクロックの周波数によって情報の書き込みや読み出しが行われる。 IC chip 101, there is the writing and reading of data in a non-contact state via the antenna unit 111 to 113 is configured to be a clock generator which is synchronized with the frequency of 13.56MHz~2.45GHz (not shown) is provided inside, signal clock synchronized with the frequency of the signal when received is generated through the antenna section 111 to 113, writing and reading of information by the frequency of the clock is performed .

また、アンテナ部111は、コイル形状の内部を通過する磁束によって電流が流れるものであって、13.56MHzの周波数で共振するようにその長さ及び巻き数が設計されている。 Further, the antenna section 111, there is a current flows by the magnetic flux passing through the inside of the coil shape and is designed in length and number of turns so as to resonate at 13.56MHz frequency. また、コイル状のパターンの内部から外部に引き出される領域がアンテナ部111の他の領域と接触しないように絶縁層104が形成されている。 The insulating layer 104 so as not to contact the other areas of the region to be drawn to the outside from the inside of the coil-shaped pattern antenna portion 111 is formed.

また、アンテナ部112は、所定の幅W 1をそれぞれ有する2つのL字型の導体112a,112bからなり、2.45GHzの周波数で共振するようにその長さが設計されている。 The antenna unit 112 includes two L-shaped conductors 112a each having a predetermined width W 1, consists 112b, its length to resonate at 2.45GHz frequency is designed. このような形状のアンテナにおいては、その長さが、情報の書き込み及び読み出しに用いる周波数f aとベース基材102の比透磁率及び比誘電率とから求まる波長λの1/2である場合に共振し、ICチップ101に対する情報の書き込みや読み出しが可能となる。 In the antenna having such a shape, when the length is a half of the wavelength λ obtained from the relative permeability and the relative dielectric constant of the frequency f a and the base substrate 102 to be used for writing and reading information resonating, it is possible to write and read information to the IC chip 101. 上述した波長λは、ベース基材102の比透磁率をμs、ベース基材102の比誘電率をεsとした場合、周波数f a及び光速cを用いて、λ=c/(f a ×(μs×εs) 1/2 )によって一義的に求めることができる。 The wavelength lambda described above, .mu.s relative permeability of the base material 102, when a εs dielectric constant of the base material 102, using a frequency f a and the speed of light c, λ = c / (f a × ( μs × εs) 1/2) makes it possible to uniquely determine. そのため、アンテナ部112を2.45GHzの周波数で共振するものとするためには、アンテナ部112の導体112aの端部Aから端部B及び導体112bの端部B'を通って導体112bの端部A'までの長さl 1を、l 1 =λ/2=c/(2×2.45×10 9 ×(μs×εs) 1/2 )によって算出して設定すれば、ICチップ101に対する情報の書き込みや読み出しが可能となる。 Therefore, in order to be resonant antenna unit 112 at 2.45GHz frequency, an end of the conductor 112b through the end portion B 'of the end portion B and the conductor 112b from the end A of the conductor 112a of the antenna 112 to part a 'the length l 1, is set by calculating the l 1 = λ / 2 = c / (2 × 2.45 × 10 9 × (μs × εs) 1/2), IC chip 101 information of writing and reading for becomes possible. なお、導体112a,112bは、それぞれ所定の幅W 1を有するL字型であるため、導体112aの端部Aから端部B及び導体112bの端部B'を通って導体112bの端部A'までの長さが、L字型に折り曲げられた内側と外側とで異なる。 Incidentally, the conductor 112a, 112b, since each is a L-shaped having a predetermined width W 1, the end portion A of the conductor 112b through the end portion B 'of the end portion B and the conductor 112b from the end A of the conductor 112a It lengths up 'is different in the bent inside and outside the L-shape. そのため、共振する周波数に多少の幅を持たせることができる。 Therefore, it is possible to have some width to the frequency of resonance.

また、アンテナ部113は、所定の幅W 2をそれぞれ有し、2つの辺が鈍角を挟んで折れ曲がった2つの導体113a,113bからなり、950MHzの周波数で共振するようにその長さが設計されている。 The antenna unit 113 has a predetermined width W 2, respectively, the two conductors 113a of the two sides bent across the obtuse angle made 113b, its length to resonate at the frequency of 950MHz is designed ing. 具体的には、上述したようにベース基材102の比透磁率をμs、ベース基材102の比誘電率をεsとした場合、アンテナ部113の導体113aの端部Cから端部D及び導体113bの端部D'を通って導体113bの端部C'までの長さl 2を、l 2 =λ/2=c/(2×950×10 6 ×(μs×εs) 1/2 )によって算出して設定すれば、ICチップ101に対する情報の書き込みや読み出しが可能となる。 Specifically, .mu.s relative permeability of the base material 102 as described above, if the dielectric constant of the base material 102 was .epsilon.s, end D and the conductor from the end C of the conductor 113a of the antenna 113 up 113b ends D 'end C of the through conductor 113b' of the length l 2, l 2 = λ / 2 = c / (2 × 950 × 10 6 × (μs × εs) 1/2) by setting calculated by, it is possible to write and read information to the IC chip 101. なお、導体113a,113bは、それぞれ所定の幅W 2を有し、2つの辺が鈍角を挟んで折れ曲がった構成であるため、導体113aの端部Cから端部D及び導体113bの端部D'を通って導体113bの端部C'までの長さが、鈍角を挟んで折り曲げられた内側と外側とで異なる。 Incidentally, the conductor 113a, 113b each have a predetermined width W 2, for the two sides a structure in which bent across the obtuse angle end D of the end D and the conductor 113b from the end C of the conductors 113a length to 'end C of the conductor 113b through the' is different between the inside and outside bent across the obtuse angle. そのため、共振する周波数に多少の幅を持たせることができる。 Therefore, it is possible to have some width to the frequency of resonance.

また、アンテナ部112とアンテナ部113とは、ランド部103a,103bに接続するための領域を除いて、できるだけ離れるように形成されており、それにより、アンテナ部112とアンテナ部113とが干渉することが回避されている。 Further, the antenna unit 112 and the antenna unit 113, except for the area for connecting land portion 103a, in 103b, are formed as much as possible away, it is thereby the antenna unit 112 and the antenna portion 113 interferes it has been avoided.

以下に、上記のように構成された非接触型ICタグ100に対する情報の書き込みあるいは読み出し時の動作について説明する。 Hereinafter, the operation of the time of writing or reading of information to the non-contact IC tag 100 constructed as described above.

上述した非接触型ICタグ100を、13.56MHzの周波数を用いて情報の書き込みあるいは読み出しを行う情報書込/読出装置(不図示)に近接させると、情報書込/読出装置のアンテナ(不図示)と非接触型ICタグ100のアンテナ部111とが共振し、それにより、アンテナ部111に電流が流れ、この電流がランド部103a,103bを介してICチップ101に供給される。 The noncontact IC tag 100 described above, when the close to the information read / write device for writing or reading information by using a frequency of 13.56 MHz (not shown), an antenna of the information writing / reading device (not resonates shown) and the antenna portion 111 of the non-contact IC tag 100, thereby, a current flows through the antenna section 111, the current is supplied to the IC chip 101 via the land portion 103a, 103b. ICチップ101においては、内部に設けられたクロックジェネレータによって、13.56MHzの周波数に同期するクロックが発生し、それにより、非接触状態において、情報書込/読出装置からアンテナ部111を介してICチップ101に情報が書き込まれたり、ICチップ101に書き込まれた情報がアンテナ部111を介して情報書込/読出装置にて読み出されたりする。 In the IC chip 101, the clock generator provided inside, generates a clock synchronized with the frequency of 13.56 MHz, whereby the non-contact state, from the information writing / reading device through the antenna section 111 IC or information is written to the chip 101, information written in the IC chip 101 or read by the information writing / reading device via the antenna unit 111.

また、上述した非接触型ICタグ100を、2.45GHzの周波数を用いて情報の書き込みあるいは読み出しを行う情報書込/読出装置(不図示)に近接させると、情報書込/読出装置のアンテナ(不図示)と非接触型ICタグ100のアンテナ部112とが共振し、それにより、アンテナ部112に電流が流れ、この電流がランド部103a,103bを介してICチップ101に供給される。 Also, a non-contact IC tag 100 described above, when the close to the information read / write device for writing or reading information using 2.45GHz frequency (not shown), an antenna of the information writing / reading device resonance (not shown) and the antenna unit 112 of the contactless IC tag 100, thereby, a current flows through the antenna section 112, the current is supplied to the IC chip 101 via the land portion 103a, 103b. ICチップ101においては、内部に設けられたクロックジェネレータによって、2.45GHzの周波数に同期するクロックが発生し、それにより、非接触状態において、情報書込/読出装置からアンテナ部112を介してICチップ101に情報が書き込まれたり、ICチップ101に書き込まれた情報がアンテナ部112を介して情報書込/読出装置にて読み出されたりする。 In the IC chip 101, the clock generator provided inside, generates a clock synchronized with 2.45GHz frequency, whereby in the non-contact state, from the information writing / reading device through the antenna section 112 IC or information is written to the chip 101, information written in the IC chip 101 or read by the information writing / reading device via the antenna unit 112.

また、上述した非接触型ICタグ100を、950MHzの周波数を用いて情報の書き込みあるいは読み出しを行う情報書込/読出装置(不図示)に近接させると、情報書込/読出装置のアンテナ(不図示)と非接触型ICタグ100のアンテナ部113とが共振し、それにより、アンテナ部113に電流が流れ、この電流がランド部103a,103bを介してICチップ101に供給される。 Also, a non-contact IC tag 100 described above, when the close to the information read / write device for writing or reading information by using a frequency of 950 MHz (not shown), the information writing / reading device antenna (not resonates shown) and the antenna unit 113 of the contactless IC tag 100, thereby, a current flows through the antenna unit 113, the current is supplied to the IC chip 101 via the land portion 103a, 103b. ICチップ101においては、内部に設けられたクロックジェネレータによって、950MHzの周波数に同期するクロックが発生し、それにより、非接触状態において、情報書込/読出装置からアンテナ部113を介してICチップ101に情報が書き込まれたり、ICチップ101に書き込まれた情報がアンテナ部113を介して情報書込/読出装置にて読み出されたりする。 In the IC chip 101, the clock generator provided inside, generates a clock synchronized with the frequency of 950 MHz, whereby the non-contact state, the IC chip 101 from the information writing / reading device via the antenna unit 113 or information is written to, the information written to the IC chip 101 or read via the antenna unit 113 by the information writing / reading device.

上述したように、本形態においては、13.56MHzの周波数で共振するアンテナ部111と、2.45GHzの周波数で共振するアンテナ部112と、950MHzの周波数で共振するアンテナ部113とが同一平面となるベース基材102上に形成されており、ランド部103a,103bを介してこれらの全てに接続されるようにICチップ101がベース基材101上に搭載されているため、13.56MHzの周波数を用いて情報の書き込みあるいは読み出しを行う情報書込/読出装置に近接させた場合、情報書込/読出装置のアンテナと非接触型ICタグ100のアンテナ部111とが共振し、また、2.45GHzの周波数を用いて情報の書き込みあるいは読み出しを行う情報書込/読出装置に近接させた場合、情報書込/ As described above, in the present embodiment includes an antenna unit 111 that resonates at 13.56MHz frequency, an antenna unit 112 that resonates at 2.45GHz frequency, the antenna 113 resonates at a frequency of 950MHz and a flush is formed on the base substrate 102 made of, since the IC chip 101 to be connected to all of these through the land portion 103a, and 103b are mounted on the base substrate 101, 13.56 MHz of frequency It resonates when brought close to the information read / write device for writing or reading of information, the antenna information writing / reading device and the antenna unit 111 of the contactless IC tag 100 using, also 2. If it is close to the information writing / reading device for writing or reading information by using a frequency of 45 GHz, information writing / 出装置のアンテナと非接触型ICタグ100のアンテナ部112とが共振し、また、950MHzの周波数を用いて情報の書き込みあるいは読み出しを行う情報書込/読出装置に近接させた場合、情報書込/読出装置のアンテナと非接触型ICタグ100のアンテナ部113とが共振することになり、それにより、複数の周波数を用いて情報の書き込み及び読み出しが可能なICチップ101に対して、アンテナ部111〜113が共振する3つの周波数のうちいずれかの周波数を用いて情報の書き込みあるいは読み出しを行うことができる。 Antenna output device and the antenna unit 112 of the contactless IC tag 100 resonates, and if brought close to the information read / write device for writing or reading information by using a frequency of 950 MHz, the information writing / antenna of the reading device and the antenna unit 113 of the contactless IC tag 100 is to resonate, whereby the IC chip 101 capable of writing and reading of data using a plurality of frequencies, the antenna unit 111 to 113 can be written or read information using any of the frequency of the three frequencies resonate.

(他の実施の形態) (Other embodiments)
なお、本発明は、上述した実施の形態にて示したように、互いに異なる周波数で共振する3つのアンテナ部111〜113を設け、アンテナ部111〜113が共振する3つの周波数のうちいずれかの周波数を用いてICチップ101に対して情報の書き込みあるいは読み出しを行うものに限らず、互いに異なる周波数で共振する2つ、あるいはそれ以外の数のアンテナ部からなるものも考えられる。 The present invention, as shown in embodiments described above, different frequency three antenna portions 111 to 113 which resonates provided with, either of the three frequencies which the antenna unit 111 to 113 to resonate with each other not limited to perform writing or reading of information to the IC chip 101 by using the frequency, it is conceivable that consist of two or antenna unit of the other several resonate at different frequencies.

図2は、本発明のRF−ID用アンテナの他の実施の形態が適用された非接触型ICタグの構成を示す図である。 Figure 2 is a diagram showing a configuration of a non-contact IC tag to another embodiment of the RF-ID antenna of the present invention is applied.

本形態は図2に示すように、樹脂や紙等からなるベース基材202上に、導電性材料からなるコイル状のアンテナ部211と、アンテナ部211を取り囲むように互いに所定の間隔を有して形成された2つのL字型の導体212a,212bからなるアンテナ部212と、アンテナ部211,212に接続された2つのランド部203a,203bとが形成され、このランド部203a,203bに接続されるようにICチップ201が搭載されて構成されている。 This embodiment, as shown in FIG. 2, has on the base substrate 202 made of a resin or paper, a coil-shaped antenna portion 211 made of a conductive material, a predetermined distance from each other so as to surround the antenna portion 211 two L-shaped conductors 212a formed Te, an antenna unit 212 consisting 212b, two land portions 203a connected to the antenna portion 211 and 212, and the 203b are formed, the land portions 203a, connected to 203b IC chip 201 is configured to be mounted so as to be. なお、アンテナ部211は、13.56MHzの周波数で共振するようにその長さ及び巻き数が設計されており、また、アンテナ部212は、2.45GHzの周波数で共振するようにその長さが設計されている。 The antenna unit 211 is designed its length and number of turns so as to resonate at 13.56MHz frequency, also, the antenna portion 212, its length to resonate at 2.45GHz frequency It has been designed.

このような構成とすることにより、13.56MHzの周波数を用いて情報の書き込みあるいは読み出しを行う情報書込/読出装置に近接させた場合、情報書込/読出装置のアンテナと非接触型ICタグ200のアンテナ部211とが共振し、また、2.45GHzの周波数を用いて情報の書き込みあるいは読み出しを行う情報書込/読出装置に近接させた場合、情報書込/読出装置のアンテナと非接触型ICタグ200のアンテナ部212とが共振することになり、それにより、複数の周波数を用いて情報の書き込み及び読み出しが可能なICチップ201に対して、アンテナ部211,212が共振する2つの周波数のうちいずれかの周波数を用いて情報の書き込みあるいは読み出しを行うことができる。 With such a configuration, when brought close to the information read / write device for writing or reading information by using a frequency of 13.56 MHz, the information writing / reading device antenna and the non-contact type IC tag 200 antenna part 211 and resonates, and also, when brought close to the information read / write device for writing or reading information using 2.45GHz frequency, non-contact with the antenna of the information writing / reading device will be the antenna unit 212 of the type IC tag 200 resonates, thereby the IC chip 201 capable of writing and reading information by using a plurality of frequencies, two antenna portions 211 and 212 resonate in it can be written or read information using any of the frequency of the frequency.

図3は、本発明のRF−ID用アンテナの他の実施の形態が適用された非接触型ICタグの構成を示す図である。 Figure 3 is a diagram showing a configuration of a non-contact IC tag to another embodiment of the RF-ID antenna of the present invention is applied.

本形態は図3に示すように、樹脂や紙等からなるベース基材302上に、導電性材料からなるコイル状のアンテナ部311と、互いに所定の間隔を有して形成された2つのL字型の導体313a,313bからなるアンテナ部313と、アンテナ部311,313に接続された2つのランド部303a,303bとが形成され、このランド部303a,303bに接続されるようにICチップ301が搭載されて構成されている。 This embodiment, as shown in FIG. 3, on the base substrate 302 made of a resin or paper, a coiled antenna 311 made of a conductive material, two formed by each other a predetermined distance L shaped conductors 313a, an antenna unit 313 consisting 313b, the antenna unit 311, 313 connected to two land portions 303a, and the 303b are formed, IC chip 301 as the land portion 303a, is connected to 303b There has been configured to be mounted. なお、アンテナ部311は、13.56MHzの周波数で共振するようにその長さ及び巻き数が設計されており、また、アンテナ部313は、950MHzの周波数で共振するようにその長さが設計されている。 The antenna unit 311 is designed its length and number of turns so as to resonate at 13.56MHz frequency, also, the antenna unit 313 is designed in length to resonate at the frequency of 950MHz ing.

このような構成とすることにより、13.56MHzの周波数を用いて情報の書き込みあるいは読み出しを行う情報書込/読出装置に近接させた場合、情報書込/読出装置のアンテナと非接触型ICタグ300のアンテナ部311とが共振し、また、950MHzの周波数を用いて情報の書き込みあるいは読み出しを行う情報書込/読出装置に近接させた場合、情報書込/読出装置のアンテナと非接触型ICタグ300のアンテナ部313とが共振することになり、それにより、複数の周波数を用いて情報の書き込み及び読み出しが可能なICチップ301に対して、アンテナ部311,313が共振する2つの周波数のうちいずれかの周波数を用いて情報の書き込みあるいは読み出しを行うことができる。 With such a configuration, when brought close to the information read / write device for writing or reading information by using a frequency of 13.56 MHz, the information writing / reading device antenna and the non-contact type IC tag 300 antenna unit 311 and resonates, and also, when brought close to the information read / write device for writing or reading information by using a frequency of 950 MHz, the antenna of the information writing / reading device and the non-contact type IC will be the antenna 313 of the tag 300 resonates, thereby the IC chip 301 capable of writing and reading information by using a plurality of frequencies, two frequencies which the antenna unit 311, 313 resonates out can be written or read information with any frequency.

なお、上述した実施の形態においては、本発明のRF−ID用アンテナが非接触型ICタグ100,200,300に適用された場合を例に挙げて説明したが、非接触型ICタグに限らず、非接触型ICカードや非接触型ICラベルについても本発明を適用することができる。 In the embodiment described above, the case where RF-ID antenna of the present invention is applied to a non-contact IC tag 100, 200 and 300 has been described as an example, only the non-contact type IC tag not even for a non-contact type IC card and a contactless IC label can be applied to the present invention. 例えば、図1に示したアンテナ部111〜113、図2に示したアンテナ部211,212、図3に示したアンテナ部311,313を、JISX6301で規定されるカードサイズ以下の領域に形成しておけば、図1〜図3に示したようなRF−ID用アンテナを非接触型ICカードに適用することができる。 For example, the antenna unit 111 to 113 shown in FIG. 1, the antenna unit 211, 212 shown in FIG. 2, the antenna unit 311, 313 shown in FIG. 3, formed in the following areas card size defined by JISX6301 if put, it is possible to apply the RF-ID antenna as shown in FIGS. 1 to 3 in the non-contact type IC card.

本発明のRF−ID用アンテナの実施の一形態が適用された非接触型ICタグの構成を示す図である。 It is a diagram showing a configuration of a non-contact IC tag to which an embodiment of the RF-ID antenna of the present invention is applied. 本発明のRF−ID用アンテナの他の実施の形態が適用された非接触型ICタグの構成を示す図である。 Is a diagram showing a configuration of a non-contact IC tag to another embodiment of the RF-ID antenna of the present invention is applied. 本発明のRF−ID用アンテナの他の実施の形態が適用された非接触型ICタグの構成を示す図である。 Is a diagram showing a configuration of a non-contact IC tag to another embodiment of the RF-ID antenna of the present invention is applied. 従来の非接触型ICタグの一例を示す図である。 Is a diagram illustrating an example of a conventional non-contact type IC tag. 2.45GHzの周波数帯を利用して通信を行うICチップが搭載された非接触型ICタグの一例を示す図である。 IC chip that performs communication using a 2.45GHz frequency band is a diagram showing an example of a non-contact IC tag mounted. 一般的なボウタイアンテナを有する非接触型ICタグの一例を示す図である。 Is a diagram illustrating an example of a non-contact type IC tag having a general bowtie antenna.

符号の説明 DESCRIPTION OF SYMBOLS

100,200 非接触型ICタグ 101,201,301 ICチップ 102,202,302 ベース基材 103a,103b,203a,203b,303a,303b ランド部 104,204,304 絶縁層 111,112,113,211,212,213,311,312,313 アンテナ部 112a,112b,212a,212b,312a,312b 導体 100,200 contactless IC tag 101, 201, 301 IC chip 102, 202, 302 the base material 103a, 103b, 203a, 203b, 303a, 303b land portions 104, 204, 304 insulating layers 111,112,113,211 , 212,213,311,312,313 antenna unit 112a, 112b, 212a, 212b, 312a, 312b conductor

Claims (2)

  1. 複数の周波数を用いて情報の書き込み及び読み出しが可能なICチップに接続されるRF−ID用アンテナであって、 An antenna for a RF-ID that is connected to the information writing and reading an IC chip capable by using a plurality of frequencies,
    互いに異なる周波数で共振する複数のアンテナ部が、それぞれ前記ICチップに接続可能に同一平面上に形成されたRF−ID用アンテナ。 A plurality of different antenna units to resonate at the frequency is, RF-ID antenna formed respectively on the connectable coplanar to the IC chip.
  2. 請求項1に記載のRF−ID用アンテナにおいて、 In RF-ID antenna according to claim 1,
    前記複数のアンテナ部は、JISX6301に規定されるカードサイズ以下の領域に形成されていることを特徴とするRF−ID用アンテナ。 Wherein the plurality of antenna portions, RF-ID antenna, characterized in that it is formed in a card size following regions defined in JISX6301.
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