JP2007043535A - Antenna for rf-id reader/writer device, rf-id reader/writer device using the same, and rd-id system - Google Patents

Antenna for rf-id reader/writer device, rf-id reader/writer device using the same, and rd-id system Download PDF

Info

Publication number
JP2007043535A
JP2007043535A JP2005226460A JP2005226460A JP2007043535A JP 2007043535 A JP2007043535 A JP 2007043535A JP 2005226460 A JP2005226460 A JP 2005226460A JP 2005226460 A JP2005226460 A JP 2005226460A JP 2007043535 A JP2007043535 A JP 2007043535A
Authority
JP
Japan
Prior art keywords
antenna
loop antenna
turn loop
reader
tag
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP2005226460A
Other languages
Japanese (ja)
Other versions
JP4720348B2 (en
Inventor
Futoshi Deguchi
太志 出口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2005226460A priority Critical patent/JP4720348B2/en
Publication of JP2007043535A publication Critical patent/JP2007043535A/en
Application granted granted Critical
Publication of JP4720348B2 publication Critical patent/JP4720348B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Details Of Aerials (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an antenna for RF-ID reader/writer devices, a RF-ID reader/writer device using the same, and a RF-ID system which are capable of satisfactorily communicate with a plurality of RF-ID tags disposed at narrow intervals so as to overlap. <P>SOLUTION: The antenna for RD-ID reader/writer device is characterized in that an axis approximately parallel with a center axis of an aperture face of a multi-turn loop antenna, which is not aligned to the center axis of the aperture face of the multi-turn loop antenna and doesn't pass the aperture face of the multi-turn loop antenna, is approximately aligned to a center axis of an aperture face of an antenna of at least one RF-ID tag, so that RF-ID tags are closely disposed on an outer peripheral surface of the multi-turn loop antenna. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ＨＦ帯（１３．５６ＭＨｚ帯）の周波数を利用し、複数のＲＦ−ＩＤタグとの通信を行うＲＦ−ＩＤリーダーライター装置用アンテナ及びそれを用いたＲＦ−ＩＤリーダーライター装置並びにＲＦ−ＩＤシステムに関するものである。   The present invention uses an HF band (13.56 MHz band) frequency, an antenna for an RF-ID reader / writer device that communicates with a plurality of RF-ID tags, an RF-ID reader / writer device using the antenna, and an RF -Concerning the ID system.

従来、ＨＦ帯（１３．５６ＭＨｚ帯）の周波数を利用したＲＦ−ＩＤリーダーライター装置用のアンテナとして、一般的に同一平面上に構成された一回巻きもしくは複数回巻きの円形または矩形のループアンテナが実用に供されている。   Conventionally, as an antenna for an RF-ID reader / writer device using a frequency in the HF band (13.56 MHz band), a single-turn or multiple-turn circular or rectangular loop antenna generally configured on the same plane Is in practical use.

このＲＦ−ＩＤリーダーライター装置用ループアンテナは、その開口面Ｓに垂直な方向（中心軸方向）の磁界強度が最も大きい。よって、ＲＦ−ＩＤタグ側のループアンテナとＲＦ−ＩＤリーダーライター装置用ループアンテナの位置関係は、お互いの開口面Ｓが平行になる様に配置されるのが一般的であった。   The loop antenna for the RF-ID reader / writer device has the highest magnetic field strength in the direction perpendicular to the opening surface S (the direction of the central axis). Therefore, the positional relationship between the loop antenna on the RF-ID tag side and the loop antenna for the RF-ID reader / writer device is generally arranged so that the opening surfaces S are parallel to each other.

また、複数のＲＦ−ＩＤタグとの通信を行う場合においても、同一平面上に複数のＲＦ−ＩＤタグを開口面Ｓが重ならないように並べ、ＲＦ−ＩＤリーダーライター装置用ループアンテナに対して開口面Ｓが平行になるように配置していた。   Further, even when communication with a plurality of RF-ID tags is performed, a plurality of RF-ID tags are arranged on the same plane so that the opening surfaces S do not overlap with each other, and the loop antenna for the RF-ID reader / writer device is arranged. The opening surfaces S are arranged in parallel.

しかし、書籍管理用途やＣＤ／ＤＶＤ管理用途等の極めて厚さの薄い物品管理などに供するときには、ＲＦ−ＩＤタグのサイズと、前記物品の厚さの物理的関係により、書籍やＣＤ／ＤＶＤケースの背表紙にＲＦ−ＩＤタグを貼り付けできないという問題が生じていた。この解決策として、複数のＲＦ−ＩＤタグを狭間隔（物品の厚さ＋α）でタグアンテナの中心軸が一致するように重なり合わせるように、管理物品の表表紙面もしくは裏表紙面に貼り付けせざるを得なかった。   However, when the product is used for managing an extremely thin article such as a book management application or a CD / DVD management application, the book or CD / DVD case depends on the physical relationship between the size of the RF-ID tag and the thickness of the article. There was a problem that the RF-ID tag could not be pasted on the back cover of this. As a solution, a plurality of RF-ID tags are attached to the front cover surface or back cover surface of the managed article so that the center axes of the tag antennas coincide with each other at narrow intervals (article thickness + α). I had to.

また、従来の一般的な同一平面上に構成された一回巻きもしくは複数回巻きの円形または矩形のループアンテナを用いて、重なり合わせるように配置した複数のＲＦ−ＩＤタグとの通信を行う場合、タグ間の干渉やタグとリーダーライター装置用のアンテナとの干渉によるアンテナ共振周波数のズレや、基本的に磁界強度の距離減衰によりタグの読取数が極めて少なく、全てのタグとの通信できないという欠点があった。   In the case of performing communication with a plurality of RF-ID tags arranged so as to overlap using a conventional one-turn or multiple-turn circular or rectangular loop antenna configured on the same common plane. The number of tag readings is extremely small due to interference between tags, deviation of the antenna resonance frequency due to interference between the tag and the antenna for the reader / writer device, and basically the distance attenuation of the magnetic field strength, making it impossible to communicate with all tags. There were drawbacks.

ここで、図１４は従来のＲＦ−ＩＤリーダーライター装置用アンテナを示す説明図である。図１４（ａ）に示すように、一般的な同一平面上に構成された一回巻きもしくは複数回巻きの円形または矩形のループアンテナ１０１においては、その開口面Ｓの中心軸Ｚ上が最も磁界強度が大きく、中心軸Ｚ上の点ｐとループアンテナ１０１との距離をｄとした場合の距離ｄの増加による点ｐでの磁界強度の変化を図１５に示す。これより距離ｄの増加に伴い磁界強度が減衰しタグの動作磁界Ｈｔを下回ると通信できなくなることがわかる。なお、図１５は従来のＲＦ−ＩＤリーダーライター装置用アンテナの動作状態における距離と磁界強度の変化を示すグラフである。   Here, FIG. 14 is an explanatory view showing a conventional antenna for an RF-ID reader / writer device. As shown in FIG. 14 (a), in a one-turn or multiple-turn circular or rectangular loop antenna 101 configured on the same common plane, the magnetic field is most on the central axis Z of the opening surface S. FIG. 15 shows a change in the magnetic field strength at the point p due to an increase in the distance d when the strength is large and the distance between the point p on the central axis Z and the loop antenna 101 is d. From this, it can be seen that when the distance d increases, the magnetic field intensity attenuates and communication is not possible when the operating magnetic field Ht of the tag falls below. FIG. 15 is a graph showing changes in distance and magnetic field strength in the operating state of a conventional antenna for an RF-ID reader / writer device.

図１４（ｂ）に示すように、この場合の磁束１０２の密度は、距離ｄの増加に伴い磁束密度が疎になって行く事がわかる。図１５で示される距離ｄ１よりタグが遠くなると通信が出来なくなりタグ読取範囲が狭いという欠点があった。   As shown in FIG. 14B, it can be seen that the density of the magnetic flux 102 in this case becomes sparse as the distance d increases. When the tag is further than the distance d1 shown in FIG. 15, communication is not possible and the tag reading range is narrow.

更に、（特許文献１）に記載のタグ検索装置について説明する。図１６は従来のタグ検索装置を説明する図である。図１６においてファイル２０１をタグ２０３の貼られたフォルダ２０２に入れて管理するものであるが、複数のタグ２０３に対応して、タグ２０３の各々にコイル２０５をそれぞれ配設し、ドライブ回路２０４にて順次通信を行うように工夫されている。この場合ファイル２０１の厚さに比べフォルダ２０２及びタグ２０３の幅が広く、書籍管理用途やＣＤ／ＤＶＤ管理用途等の極めて厚さの薄い物品管理においてはその収納数が限定されるという欠点があった。
特開平７−１８２３５７号公報 Furthermore, the tag search device described in (Patent Document 1) will be described. FIG. 16 is a diagram for explaining a conventional tag search apparatus. In FIG. 16, the file 201 is managed by putting it in a folder 202 to which a tag 203 is attached. A coil 205 is provided in each tag 203 corresponding to a plurality of tags 203, and the drive circuit 204 is provided. It is devised to communicate sequentially. In this case, the width of the folder 202 and the tag 203 is wider than the thickness of the file 201, and the number of stored items is limited in the management of extremely thin articles such as a book management application and a CD / DVD management application. It was.
JP 7-182357 A

このように、従来の技術においては、書籍管理用途やＣＤ／ＤＶＤ管理用途等の極めて厚さの薄い物品をＲＦ−ＩＤタグにて管理する用途において、この欠点はタグ読取性能に関して大きな障害である。具体的には、より大きな送信電力を入力したり、あるいは、故意に隣接するタグ同士のアンテナの中心軸を少しずつずらしたりするなど管理上の問題があった。   As described above, in the conventional technique, in the use of managing an extremely thin article such as a book management application or a CD / DVD management application using an RF-ID tag, this drawback is a great obstacle with respect to the tag reading performance. . Specifically, there has been a management problem such as inputting a larger transmission power or intentionally shifting the central axis of the antenna between adjacent tags little by little.

そこで、本発明は、重なり合うように狭間隔に配置した複数のＲＦ−ＩＤタグとの通信を良好に行うことができるＲＦ−ＩＤリーダーライター装置用アンテナ及びそれを用いたＲＦ−ＩＤリーダーライター装置並びにＲＦ−ＩＤシステムを提供することを目的とする。   Therefore, the present invention provides an antenna for an RF-ID reader / writer device that can satisfactorily communicate with a plurality of RF-ID tags arranged at narrow intervals so as to overlap, an RF-ID reader / writer device using the antenna, and An object is to provide an RF-ID system.

本発明のＲＦ−ＩＤリーダーライター装置用アンテナは、多巻きループアンテナの開口面の中心軸に合致せず、多巻きループアンテナの開口面を通らない中心軸に略平行な軸と、少なくとも一つのＲＦ−ＩＤタグのアンテナの開口面の中心軸とを略一致させて、多巻きループアンテナの外周側面の面上に、ＲＦ−ＩＤタグが近接配置させたことを特徴とする。   The RF-ID reader / writer device antenna of the present invention has at least one axis that does not match the central axis of the opening surface of the multi-turn loop antenna and is substantially parallel to the central axis that does not pass through the opening surface of the multi-turn loop antenna. The RF-ID tag is arranged close to the outer peripheral side surface of the multi-turn loop antenna so that the central axis of the opening surface of the antenna of the RF-ID tag is substantially coincident.

また、ＲＦ−ＩＤリーダーライター装置は、該ＲＦ−ＩＤリーダーライター装置用アンテナを備え、ＲＦ−ＩＤタグに電磁誘導により電力と送信データを供給し、ＲＦ−ＩＤタグから受信データを負荷変動により取得することを特徴とする。   The RF-ID reader / writer device also includes the antenna for the RF-ID reader / writer device, supplies power and transmission data to the RF-ID tag by electromagnetic induction, and acquires received data from the RF-ID tag due to load fluctuations. It is characterized by doing.

更に、ＲＦ−ＩＤシステムは、複数のＲＦ−ＩＤタグに電磁誘導により電力と送信データを供給し、ＲＦ−ＩＤタグから受信データを負荷変動により取得するＲＦ−ＩＤリーダーライター装置に接続されるアンテナを備え、アンテナは多巻きループアンテナで構成され、多巻きループアンテナの開口面の中心軸に合致せず、且つ多巻きループアンテナの開口面を通らない、且つ中心軸に略平行な軸と、一つまたは複数のＲＦ−ＩＤタグのループアンテナの開口面の中心軸を略一致させて、多巻きループアンテナの外周側面の面上に、一直線上に複数のＲＦ−ＩＤタグを近接配置させたことを特徴とする。   Further, the RF-ID system supplies power and transmission data to a plurality of RF-ID tags by electromagnetic induction, and an antenna connected to an RF-ID reader / writer device that acquires received data from the RF-ID tag due to load fluctuations. The antenna is composed of a multi-turn loop antenna, does not match the central axis of the opening surface of the multi-turn loop antenna, does not pass through the opening surface of the multi-turn loop antenna, and is substantially parallel to the central axis; The center axis of the opening surface of the loop antenna of one or a plurality of RF-ID tags is substantially coincided, and a plurality of RF-ID tags are arranged close to each other on the outer peripheral side surface of the multi-turn loop antenna. It is characterized by that.

本発明により、重なり合うように狭間隔に配置した複数のＲＦ−ＩＤタグとの通信を良好に行うことができる。   According to the present invention, it is possible to satisfactorily communicate with a plurality of RF-ID tags arranged at narrow intervals so as to overlap.

（実施の形態１）
図１は、本発明の実施の形態１におけるＲＦ−ＩＤシステムを示す斜視図である。図１において、１は多巻きループアンテナ、２は筐体、３はＲＦ−ＩＤリーダーライター装置、４は同軸ケーブルを示す。更に、３０はＲＦ−ＩＤタグ、３１はタグ側アンテナである。なお、Ｓは開口面を示している。 (Embodiment 1)
FIG. 1 is a perspective view showing an RF-ID system according to Embodiment 1 of the present invention. In FIG. 1, 1 is a multi-turn loop antenna, 2 is a housing, 3 is an RF-ID reader / writer device, and 4 is a coaxial cable. Further, 30 is an RF-ID tag, and 31 is a tag side antenna. In addition, S has shown the opening surface.

図１に示すように、多巻きループアンテナ１は本発明のＲＦ−ＩＤリーダーライター装置用アンテナであり、樹脂製の筐体２に収納されている。また、多巻きループアンテナ１は同軸ケーブル４を介してＲＦ−ＩＤリーダーライター装置３に接続されている。   As shown in FIG. 1, a multi-turn loop antenna 1 is an antenna for an RF-ID reader / writer device according to the present invention, and is housed in a resin housing 2. The multi-turn loop antenna 1 is connected to the RF-ID reader / writer device 3 through a coaxial cable 4.

そして、ＲＦ−ＩＤリーダーライター装置３に接続された多巻きループアンテナ１は、タグ側アンテナ３１を備えた複数のＲＦ−ＩＤタグ３０に電磁誘導により電力と送信データを供給し、ＲＦ−ＩＤタグ３０から受信データを負荷変動により取得する。   Then, the multi-turn loop antenna 1 connected to the RF-ID reader / writer device 3 supplies power and transmission data to the plurality of RF-ID tags 30 including the tag-side antenna 31 by electromagnetic induction. Received data from 30 is obtained by load fluctuation.

また、図１に示すように、多巻きループアンテナ１の開口面Ｓの中心軸Ａ−Ａ’に合致せず、且つ多巻きループアンテナ１の開口面Ｓを通らず、且つ中心軸Ａ−Ａ’に略平行な中心軸Ｂ−Ｂ’に対して、少なくとも１つ（図１の場合では複数）のＲＦ−ＩＤタグ３０のタグ側アンテナ３１の開口面Ｓの中心軸Ｂ−Ｂ’を略一致させて、多巻きループアンテナ１の外周側面の面上に、略一直線上に複数のＲＦ−ＩＤタグ３０を狭間隔に配置させている。   Further, as shown in FIG. 1, the central axis AA ′ does not match the central axis AA ′ of the opening surface S of the multi-turn loop antenna 1 and does not pass through the opening surface S of the multi-turn loop antenna 1. The central axis BB ′ of the opening surface S of the tag-side antenna 31 of at least one (a plurality in the case of FIG. 1) RF-ID tag 30 with respect to the central axis BB ′ substantially parallel to “ A plurality of RF-ID tags 30 are arranged on a substantially straight line on the surface of the outer peripheral side surface of the multi-loop antenna 1 so as to coincide with each other.

このような配置によって、多巻きループアンテナ１の外周側面の面上の全てのＲＦ−ＩＤタグ３０との通信を実現することが可能となる。   With such an arrangement, communication with all the RF-ID tags 30 on the outer peripheral side surface of the multi-loop antenna 1 can be realized.

そして、本発明はＲＦ−ＩＤリーダーライター装置用アンテナに、多巻きループアンテナ１を使用しその開口面Ｓの中心軸Ａ−Ａ’と、複数のＲＦ−ＩＤタグ３０のタグ側アンテナ３１の開口面Ｓの中心軸Ｂ−Ｂ’とを一致させず、尚且つ多巻きループアンテナ１の開口面Ｓ上に複数のＲＦ−ＩＤタグ３０を配置しないことにより、重なり合うように狭間隔に配置した複数のＲＦ−ＩＤタグ３０との通信が良好に行うことができる。   In the present invention, the multi-loop antenna 1 is used as the antenna for the RF-ID reader / writer device, the central axis AA ′ of the opening surface S, and the openings of the tag-side antennas 31 of the plurality of RF-ID tags 30. A plurality of RF-ID tags 30 which are arranged so as to overlap with each other by not aligning the central axis BB ′ of the surface S and disposing a plurality of RF-ID tags 30 on the opening surface S of the multi-turn loop antenna 1. Communication with the RF-ID tag 30 can be performed satisfactorily.

多巻きループアンテナ１について更に詳しく述べる。図２は、本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す斜視図、図３は、本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す底面図である。なお、図２、図３は、多巻きループアンテナ１の筐体２を取り除いた状態の詳細を示している。また、図２、図３において、５はアンテナ基板、６はアンテナ導体、７はコネクタ、８は始端部、９は終端部、１０は接続部、１１は伝送線路、１２は共振整合回路部を示す。また、６０は交差部である。   The multi-turn loop antenna 1 will be described in more detail. FIG. 2 is a perspective view showing the antenna for the RF-ID reader / writer device according to the first embodiment of the present invention, and FIG. 3 is a bottom view showing the antenna for the RF-ID reader / writer device according to the first embodiment of the present invention. is there. 2 and 3 show details of a state in which the casing 2 of the multi-turn loop antenna 1 is removed. 2 and 3, 5 is an antenna substrate, 6 is an antenna conductor, 7 is a connector, 8 is a start end, 9 is a termination, 10 is a connection, 11 is a transmission line, and 12 is a resonance matching circuit. Show. Reference numeral 60 denotes an intersection.

図２、図３に示すように、多巻きループアンテナ１は、アンテナ基板５にアンテナ導体６を備え、幅Ｗを備えるアンテナ導体６を間隔Ｐで等間隔に多巻き（ｎ巻き）したものである。図３に示すように、それぞれ一巻きのアンテナ導体６は交差部６０を介して接続された構成となっている。多巻きループアンテナ１の始端部８、終端部９、即ち、アンテナ導体６の巻き始めである始端部８と、巻き終わりである終端部９との間には、伝送線路１１が設けられており、そのいずれか一端付近もしくは、中間点付近に共振回路部および同軸ケーブル４との整合回路部からなる共振整合回路部１２を設けた構成である。また、伝送線路１１の他端は終端部９との接続部１０となっている。更に、同軸ケーブル４の端部には、ＲＦ−ＩＤリーダーライター装置３との接続を行うコネクタ７が設けられている。   As shown in FIGS. 2 and 3, the multi-turn loop antenna 1 includes an antenna substrate 6 provided with an antenna conductor 6, and the antenna conductor 6 having a width W is wound at equal intervals P (n turns). is there. As shown in FIG. 3, each turn of the antenna conductor 6 is connected via an intersection 60. A transmission line 11 is provided between the start end 8 and the end end 9 of the multi-turn loop antenna 1, that is, between the start end 8 that is the start of winding of the antenna conductor 6 and the end end 9 that is the end of winding. In this configuration, a resonance matching circuit unit 12 including a resonance circuit unit and a matching circuit unit with the coaxial cable 4 is provided in the vicinity of one end or the middle point. Further, the other end of the transmission line 11 serves as a connection portion 10 with the termination portion 9. Furthermore, a connector 7 for connecting to the RF-ID reader / writer device 3 is provided at the end of the coaxial cable 4.

ここで、アンテナ基板５は、絶縁体を用いることができ、例えば、プリント基板や発泡スチロール等の樹脂製平板を用いることができる。また、アンテナ導体６としては、金属（導電性）箔もしくは金属（導電性）薄板等を用いることができる。交差部６０もアンテナ導体６と同様のものを用いることができる。伝送線路１１には被覆電線を用いることができる。   Here, an insulator can be used for the antenna substrate 5, and for example, a resin flat plate such as a printed circuit board or polystyrene foam can be used. The antenna conductor 6 may be a metal (conductive) foil or a metal (conductive) thin plate. The intersection 60 can be the same as the antenna conductor 6. A covered electric wire can be used for the transmission line 11.

そして、図２に示すように、開口面Ｓ以外の他の３面においてはアンテナ導体６が、多巻きループアンテナ１の開口面Ｓの中心軸Ａ−Ａ’に対し直角な方向に平行して多巻きされた構成とすることによって、読取範囲内での磁界強度の均一化を図り、通信性能の安定化を実現することができる。   As shown in FIG. 2, the antenna conductor 6 is parallel to a direction perpendicular to the central axis AA ′ of the opening surface S of the multi-loop antenna 1 on the other three surfaces other than the opening surface S. By adopting a multi-winding configuration, it is possible to make the magnetic field strength uniform within the reading range and to stabilize the communication performance.

また、図２に示すように、多巻きループアンテナ１を構成するアンテナ導体６の幅Ｗ、間隔Ｐ（ピッチＰ）との比率がＷ：Ｐ＝１：Ｎ（ただしＮ≦１）の条件を満足する横長な構造にすることによって、読取範囲長の拡大および薄型化を実現するとともに通信可能範囲内の磁界強度の均一化を実現することができる。   In addition, as shown in FIG. 2, the condition that the ratio of the width W and the interval P (pitch P) of the antenna conductor 6 constituting the multi-turn loop antenna 1 is W: P = 1: N (where N ≦ 1) is satisfied. By satisfying a horizontally long structure, the reading range length can be enlarged and thinned, and the magnetic field strength within the communicable range can be made uniform.

そして、図２に示すように、アンテナ導体６の巻き数ｎおよび多巻きループアンテナ１の全長Ｌ、幅Ｗ、ピッチＰとの関係を、多巻きループアンテナ１がコイルとしての自己共振点を超えない有限の値をとることにより読取範囲長の拡大、薄型化および通信性能の高性能化を実現することが可能となる。   As shown in FIG. 2, the relationship between the number of turns n of the antenna conductor 6 and the total length L, width W, and pitch P of the multi-turn loop antenna 1 exceeds the self-resonance point as the coil. By taking a non-finite value, it is possible to increase the reading range length, reduce the thickness, and improve the communication performance.

更に、図３に示すように、多巻きループアンテナ１を構成するアンテナ導体６の始端部８と終端部９との間に被覆電線あるいはストリップライン等の伝送線路１１を設け、そのいずれか一端付近もしくは、中間点付近に共振回路部および同軸ケーブル４との整合回路部からなる共振整合回路部１２を設けたことにより、所望の周波数において効率良く磁界を放射し、受信負荷変動を検知し通信性能の向上を実現した。   Further, as shown in FIG. 3, a transmission line 11 such as a covered electric wire or a strip line is provided between the start end portion 8 and the end end portion 9 of the antenna conductor 6 constituting the multi-turn loop antenna 1, and the vicinity of one end thereof. Alternatively, by providing a resonance matching circuit unit 12 including a resonance circuit unit and a matching circuit unit with the coaxial cable 4 near the intermediate point, a magnetic field is efficiently radiated at a desired frequency, and a received load fluctuation is detected to perform communication performance. Realized the improvement.

多巻きループアンテナ１について更に説明すると、図４は、本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す側面図、図５は、本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す断面図である。また、図６は、本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナの他の例を示す断面図である。図４において、軸Ａ−Ａ’は開口面Ｓの中心軸、軸Ｂ−Ｂ’及び軸Ｃ−Ｃ’は中心軸Ａ−Ａ’に合致せず、且つ多巻きループアンテナ１の開口面Ｓを通らない、且つ中心軸Ａ−Ａ’に略平行な軸を示す。図５、図６において、ｈａ、ｈｄは多巻きループアンテナ１の開口面Ｓの高さ、ｗｂ、ｗｅは多巻きループアンテナ１の開口面Ｓの幅であり、Ｔはアンテナ導体６の厚さを示す。   The multi-turn loop antenna 1 will be further described. FIG. 4 is a side view showing the antenna for the RF-ID reader / writer device according to the first embodiment of the present invention, and FIG. 5 is the RF-ID according to the first embodiment of the present invention. It is sectional drawing which shows the antenna for reader / writer apparatuses. Moreover, FIG. 6 is sectional drawing which shows the other example of the antenna for RF-ID reader-writer apparatuses in Embodiment 1 of this invention. In FIG. 4, the axis AA ′ is the central axis of the aperture surface S, the axes BB ′ and CC ′ do not coincide with the central axis AA ′, and the aperture surface S of the multi-turn loop antenna 1. An axis that does not pass through and is substantially parallel to the central axis AA ′ is shown. 5 and 6, ha and hd are the height of the opening surface S of the multi-turn loop antenna 1, wb and we are the width of the opening surface S of the multi-turn loop antenna 1, and T is the thickness of the antenna conductor 6. Indicates.

多巻きループアンテナ１の開口面Ｓの形状は、図５に示すように、略矩形形状であってもよく、図６に示すように、略楕円形形状であってもよい。   The shape of the opening surface S of the multi-turn loop antenna 1 may be a substantially rectangular shape as shown in FIG. 5, or may be a substantially elliptical shape as shown in FIG.

図５に示すように、多巻きループアンテナ１の開口面Ｓの高さｈａ、幅ｗｂとの比率が、ｈａ：ｗｂ＝１：Ｎ（ただしＮ≧２）の条件を満足する扁平な構造にしたことによりアンテナの薄型化を実現できる。   As shown in FIG. 5, the multi-loop antenna 1 has a flat structure in which the ratio between the height ha and the width wb of the opening surface S satisfies the condition of ha: wb = 1: N (where N ≧ 2). As a result, the antenna can be thinned.

更に、図６に示すように、多巻きループアンテナ１の開口面Ｓの高さｈａ、幅ｗｂとの比率が、ｈｄ：ｗｅ＝１：Ｎ（ただしＮ≧２）の条件を満足する扁平な構造にしたことによりアンテナの薄型化を実現できる。   Further, as shown in FIG. 6, the ratio between the height ha and the width wb of the opening surface S of the multi-turn loop antenna 1 is flat so as to satisfy the condition of hd: we = 1: N (where N ≧ 2). With the structure, the antenna can be thinned.

即ち、図５、図６に示すように、多巻きループアンテナ１の開口面Ｓの形状が矩形もしくは楕円形で、その高さｈ、幅ｗとの比率が、ｈ：ｗ＝１：Ｎ（ただしＮ≧２）の条件を満足する扁平な構造にしたことによりアンテナの薄型化を実現できる。   That is, as shown in FIGS. 5 and 6, the shape of the opening surface S of the multi-turn loop antenna 1 is rectangular or elliptical, and the ratio of the height h to the width w is h: w = 1: N ( However, the antenna can be thinned by adopting a flat structure that satisfies the condition of N ≧ 2).

また、図４、図５に示すように、多巻きループアンテナ１の開口面Ｓの幅ｗｂと多巻きループアンテナ１の全長Ｌとの比率が、ｗｂ：Ｌ＝１：Ｎ（ただしＮ≧２）の条件を満足する横長な構造にしたことにより読取範囲長の拡大および薄型化を実現できる。   4 and 5, the ratio of the width wb of the opening surface S of the multi-turn loop antenna 1 to the total length L of the multi-turn loop antenna 1 is wb: L = 1: N (where N ≧ 2). ), The reading range length can be increased and the thickness can be reduced.

即ち、図４、図６に示すように、多巻きループアンテナ１の開口面Ｓの幅ｗｅと多巻きループアンテナ１の全長Ｌとの比率が、ｗｅ：Ｌ＝１：Ｎ（ただしＮ≧２）の条件を満足する横長な構造にしたことにより読取範囲長の拡大および薄型化を実現できる。   That is, as shown in FIGS. 4 and 6, the ratio of the width we of the opening surface S of the multi-turn loop antenna 1 to the total length L of the multi-turn loop antenna 1 is we: L = 1: N (where N ≧ 2). ), The reading range length can be increased and the thickness can be reduced.

即ち、図４〜図６に示すように、多巻きループアンテナ１の開口面Ｓの幅ｗと多巻きループアンテナ１の全長Ｌとの比率が、ｗ：Ｌ＝１：Ｎ（ただしＮ≧２）の条件を満足する横長な構造にしたことにより読取範囲長の拡大および薄型化を実現できる。   That is, as shown in FIGS. 4 to 6, the ratio of the width w of the opening surface S of the multi-turn loop antenna 1 to the total length L of the multi-turn loop antenna 1 is w: L = 1: N (where N ≧ 2). ), The reading range length can be increased and the thickness can be reduced.

ここで、図７は、本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す上面図、図８は、本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す底面図である。なお、図７、図８も、多巻きループアンテナ１の筐体２を取り除いた状態の詳細を示している。また、図８は、多巻きループアンテナ１における伝送線路１１、共振整合回路部１２を省略した状態を示している。   7 is a top view showing the antenna for the RF-ID reader / writer device according to the first embodiment of the present invention, and FIG. 8 shows the antenna for the RF-ID reader / writer device according to the first embodiment of the present invention. It is a bottom view. 7 and 8 also show details of the state where the casing 2 of the multi-turn loop antenna 1 is removed. FIG. 8 shows a state in which the transmission line 11 and the resonance matching circuit unit 12 in the multi-turn loop antenna 1 are omitted.

アンテナ導体６の巻き方について詳細に説明すると、先ず、アンテナ基板５の周囲にアンテナ導体６ａを形成する。図８に示すように、底面の始端部８から形成し、アンテナ導体６ａ’部分から、図７に示すような表面のアンテナ導体６ａとし、更に、底面に戻ってアンテナ導体６ａ’’部分とし、交差部６０ａを介して、アンテナ導体６ｂ’部分に連なり、次のアンテナ導体６ｂとなる。そして、順次巻かれ、アンテナ導体６ｅ’’部分から、交差部６０ｅを介して、アンテナ導体６ｎ’に連なり、次のアンテナ導体６ｎとなって、ｎ巻きされる。この時、底面のアンテナ導体６ｎ’’部分の巻き終わり部が終端部９となる。このように、底面においては、アンテナ導体６ａ’（〜アンテナ導体６ｎ’）部分とアンテナ導体６ａ’’（〜アンテナ導体６ｎ’’）部分との間には間隙５０を備え、隣接するアンテナ導体６ａ〜アンテナ導体６ｎの間には、交差部６０ａ〜交差部６０ｅを有し、交差部６０ａ〜交差部６０ｅは、アンテナ導体６ａ’’（〜アンテナ導体６ｅ’’）とアンテナ導体６ｂ’（〜アンテナ導体６ｎ’）とを接続している。   The method of winding the antenna conductor 6 will be described in detail. First, the antenna conductor 6 a is formed around the antenna substrate 5. As shown in FIG. 8, the antenna conductor 6 a ′ is formed from the starting end portion 8 on the bottom surface, and the antenna conductor 6 a having the surface as shown in FIG. 7 is formed from the antenna conductor 6 a ′. The antenna conductor 6b 'is connected to the antenna conductor 6b' through the intersection 60a to become the next antenna conductor 6b. Then, the winding is sequentially performed, and the antenna conductor 6e "is connected to the antenna conductor 6n 'via the intersecting portion 60e to be the next antenna conductor 6n, and n turns. At this time, the winding end portion of the antenna conductor 6 n ″ portion on the bottom surface becomes the termination portion 9. Thus, on the bottom surface, the gap 50 is provided between the antenna conductor 6a ′ (˜antenna conductor 6n ′) portion and the antenna conductor 6a ″ (˜antenna conductor 6n ″) portion, and the adjacent antenna conductor 6a. Between the antenna conductors 6n, there are intersections 60a to 60e. The intersections 60a to 60e are antenna conductors 6a '' (to antenna conductors 6e '') and antenna conductors 6b '(to antennas). Conductor 6n ') is connected.

よって、図２〜図８に示したように、多巻きループアンテナ１を構成するアンテナ導体６は少なくとも一つの同一面上で第一の巻き（ループ）であるアンテナ導体６ａと第二の巻きであるアンテナ導体６ｂとを交差部６０ａから、第（ｎ−１）の巻きであるアンテナ導体６ｅと第ｎの巻きであるアンテナ導体６ｎとを交差部６０ｅを設け接続される構成である。   Therefore, as shown in FIGS. 2 to 8, the antenna conductor 6 constituting the multi-turn loop antenna 1 is composed of the antenna conductor 6 a that is the first winding (loop) and the second winding on at least one same surface. A certain antenna conductor 6b is connected from an intersection 60a, and an antenna conductor 6e that is an (n-1) th turn and an antenna conductor 6n that is an nth turn are provided with an intersection 60e.

図９は本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナの動作状態での磁界分布を示す説明図である。更に、図１０は本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナの動作状態における距離と磁界強度の変化を示すグラフである。図９は図４における磁束の様子を示し、図１０は中心軸Ｂ−Ｂ’上の点ｐと多巻きループアンテナ１の長さをＬとした場合の、長さＬの増加による点ｐでの磁界強度の変化を示している。１３は磁束を示し、長さＬの範囲においてほぼ均一な磁束密度となっている事がわかる。すなわち中心軸Ｂ−Ｂ’に対して、図１に示すように一つまたは複数のＲＦ−ＩＤタグ３０のそのタグの構成要素の一つであるタグ側アンテナ３１の開口面Ｓの中心軸Ｂ−Ｂ’を略一致させて、多巻きループアンテナ１の外周側面の面上に、一直線上に複数のＲＦ−ＩＤタグ３０を狭間隔に配置させたことにより、これらのＲＦ−ＩＤタグ３０には均一な磁界強度が与えられ、図１０に示すようにＲＦ−ＩＤタグ３０のサイズや搭載されるＩＣ性能により決定されるタグ動作磁界Ｈｔよりも大きな磁界強度を与える事が可能となり、広範囲なタグ読取範囲を実現した。   FIG. 9 is an explanatory diagram showing the magnetic field distribution in the operating state of the antenna for the RF-ID reader / writer device in the first embodiment of the present invention. Further, FIG. 10 is a graph showing changes in distance and magnetic field strength in the operating state of the antenna for the RF-ID reader / writer device according to Embodiment 1 of the present invention. FIG. 9 shows the state of the magnetic flux in FIG. 4, and FIG. 10 shows the point p due to the increase in the length L when the point p on the central axis BB ′ and the length of the multi-turn loop antenna 1 are L. The change of the magnetic field intensity of is shown. Reference numeral 13 denotes a magnetic flux, and it can be seen that the magnetic flux density is almost uniform in the range of the length L. That is, with respect to the central axis BB ′, as shown in FIG. 1, the central axis B of the opening surface S of the tag-side antenna 31 that is one of the components of the tag of one or a plurality of RF-ID tags 30. −B ′ is substantially matched, and a plurality of RF-ID tags 30 are arranged in a straight line on the outer peripheral side surface of the multi-turn loop antenna 1, so that these RF-ID tags 30 Is given a uniform magnetic field strength, and as shown in FIG. 10, it is possible to give a magnetic field strength greater than the tag operating magnetic field Ht determined by the size of the RF-ID tag 30 and the IC performance to be mounted. Realized tag reading range.

（実施の形態２）
図１１は、本発明の実施の形態２におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す斜視図、図１２は、本発明の実施の形態２におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す断面図である。図１１、図１２において、１４は磁性材料であり、５１はアンテナ基板である。 (Embodiment 2)
FIG. 11 is a perspective view showing an antenna for an RF-ID reader / writer device according to Embodiment 2 of the present invention, and FIG. 12 is a cross-sectional view showing the antenna for an RF-ID reader / writer device according to Embodiment 2 of the present invention. is there. 11 and 12, 14 is a magnetic material, and 51 is an antenna substrate.

図１１、図１２に示すように、アンテナ基板５１内にフェライト等の高透磁率で低損失の磁性材料１４を充填することにより、磁束を集中させる事により、さらなる薄型化・小型化を実現すると共にさらに効率良く磁界を放射し、受信負荷変動を検知し通信性能のさらなる向上を実現したものである。そして、実施の形態１と同様に、開口面Ｓ以外の他の３面においてはアンテナ導体６が、多巻きループアンテナ１の開口面Ｓの中心軸Ａ−Ａ’に対し直角な方向に平行して多巻きされたことにより読取範囲内での磁界強度の均一化を図り、通信性能の安定化を実現できる。   As shown in FIGS. 11 and 12, the antenna substrate 51 is filled with a magnetic material 14 having a high magnetic permeability and a low loss such as ferrite, thereby concentrating the magnetic flux, thereby realizing further reduction in thickness and size. In addition, the magnetic field is radiated more efficiently, the reception load fluctuation is detected, and the communication performance is further improved. As in the first embodiment, the antenna conductor 6 is parallel to a direction perpendicular to the central axis AA ′ of the opening surface S of the multi-turn loop antenna 1 on the other three surfaces other than the opening surface S. Thus, the magnetic field strength within the reading range can be made uniform and the communication performance can be stabilized.

このように、多巻きループアンテナ１の開口面Ｓ内にフェライト等の高透磁率で低損失の磁性材料１４を充填することにより、より薄型化・小型化を実現すると共にさらに効率良く磁界を放射し、受信負荷変動を検知し通信性能のさらなる向上を実現できる。   In this way, by filling the opening surface S of the multi-turn loop antenna 1 with the magnetic material 14 having a high magnetic permeability and a low loss such as ferrite, it is possible to reduce the thickness and size and to radiate the magnetic field more efficiently. Thus, it is possible to detect reception load fluctuations and further improve communication performance.

（実施の形態３）
図１３は、本発明の実施の形態３におけるＲＦ−ＩＤシステムを示す斜視図である。図１３において、１５は支持台、２０は管理物品である。 (Embodiment 3)
FIG. 13 is a perspective view showing an RF-ID system according to Embodiment 3 of the present invention. In FIG. 13, 15 is a support base, and 20 is a managed article.

図１３に示すように、本発明の応用例でＣＤやＤＶＤ等の極めて厚さの薄い管理物品２０の表紙面所定の位置（図１、図４、図９で示した中心軸Ｂ−Ｂ’が貫通するように）にＲＦ−ＩＤタグ３０を貼付し、多巻きループアンテナ１との間で通信を行うようにしたものである。   As shown in FIG. 13, in the application example of the present invention, a predetermined position on the cover surface of the management article 20 having a very small thickness such as CD or DVD (the central axis BB ′ shown in FIGS. 1, 4 and 9). The RF-ID tag 30 is affixed to the loop antenna 1 so as to communicate with the multi-turn loop antenna 1.

なお、以上説明した実施の形態１〜３において、多巻きループアンテナ１は、外部金属の影響を避ける目的で、インピーダンス等の通信特性を事前に調整可能なように、通信方向を除き金属板等で覆ってもよい。   In the first to third embodiments described above, the multi-turn loop antenna 1 is a metal plate or the like except for the communication direction so that communication characteristics such as impedance can be adjusted in advance for the purpose of avoiding the influence of external metal. It may be covered with.

このような扁平な平板状の多巻きループアンテナ１を採用したことにより、狭間隔に重ね合わされた複数のタグに対し広範囲なタグ読取範囲を実現した。これにより書籍管理用途やＣＤ／ＤＶＤ管理用途等の極めて厚さの薄い物品管理など、書籍やＣＤ／ＤＶＤケースの背表紙にＲＦ−ＩＤタグを貼り付けできない場合においても、表表紙面もしくは裏表紙面に貼り付けたＲＦ−ＩＤタグとの通信が可能となった。   By adopting such a flat, flat, multi-turn loop antenna 1, a wide tag reading range is realized for a plurality of tags superimposed at a narrow interval. As a result, even if the RF-ID tag cannot be attached to the back cover of a book or CD / DVD case, such as for managing an extremely thin article such as a book management application or a CD / DVD management application, the front cover surface or back cover surface Communication with the RF-ID tag affixed to was enabled.

本発明のＲＦ−ＩＤリーダーライター装置用アンテナ及びそれを用いたＲＦ−ＩＤリーダーライター装置並びにＲＦ−ＩＤシステムは、狭間隔に重ね合わされた複数のタグに対し広範囲なタグ読取範囲が必要とされる、ＨＦ帯（１３．５６ＭＨｚ帯）の周波数を利用し、複数のＲＦ−ＩＤタグとの通信を行うＲＦ−ＩＤリーダーライター装置用アンテナ及びそれを用いたＲＦ−ＩＤリーダーライター装置並びにＲＦ−ＩＤシステムの用途にも適用できる。   The antenna for an RF-ID reader / writer device of the present invention, the RF-ID reader / writer device using the antenna, and the RF-ID system require a wide tag reading range for a plurality of tags stacked at a narrow interval. , An antenna for an RF-ID reader / writer device that communicates with a plurality of RF-ID tags using a frequency in the HF band (13.56 MHz band), an RF-ID reader / writer device using the antenna, and an RF-ID system It can be applied to other uses.

本発明の実施の形態１におけるＲＦ−ＩＤシステムを示す斜視図The perspective view which shows the RF-ID system in Embodiment 1 of this invention 本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す斜視図The perspective view which shows the antenna for RF-ID reader-writer apparatuses in Embodiment 1 of this invention 本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す底面図The bottom view which shows the antenna for RF-ID reader-writer apparatuses in Embodiment 1 of this invention 本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す側面図The side view which shows the antenna for RF-ID reader-writer apparatuses in Embodiment 1 of this invention 本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す断面図Sectional drawing which shows the antenna for RF-ID reader-writer apparatuses in Embodiment 1 of this invention 本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナの他の例を示す断面図Sectional drawing which shows the other example of the antenna for RF-ID reader-writer apparatuses in Embodiment 1 of this invention 本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す上面図The top view which shows the antenna for RF-ID reader-writer apparatuses in Embodiment 1 of this invention 本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す底面図The bottom view which shows the antenna for RF-ID reader-writer apparatuses in Embodiment 1 of this invention 本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナの動作状態での磁界分布を示す説明図Explanatory drawing which shows magnetic field distribution in the operation state of the antenna for RF-ID reader-writer apparatuses in Embodiment 1 of this invention 本発明の実施の形態１におけるＲＦ−ＩＤリーダーライター装置用アンテナの動作状態における距離と磁界強度の変化を示すグラフThe graph which shows the change of the distance and magnetic field intensity in the operation state of the antenna for RF-ID reader-writer apparatuses in Embodiment 1 of this invention 本発明の実施の形態２におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す斜視図The perspective view which shows the antenna for RF-ID reader-writer apparatuses in Embodiment 2 of this invention 本発明の実施の形態２におけるＲＦ−ＩＤリーダーライター装置用アンテナを示す断面図Sectional drawing which shows the antenna for RF-ID reader-writer apparatuses in Embodiment 2 of this invention 本発明の実施の形態３におけるＲＦ−ＩＤシステムを示す斜視図The perspective view which shows the RF-ID system in Embodiment 3 of this invention 従来のＲＦ−ＩＤリーダーライター装置用アンテナを示す説明図Explanatory drawing which shows the antenna for the conventional RF-ID reader / writer apparatus 従来のＲＦ−ＩＤリーダーライター装置用アンテナの動作状態における距離と磁界強度の変化を示すグラフThe graph which shows the change of the distance and magnetic field intensity in the operation state of the antenna for conventional RF-ID reader-writer apparatuses 従来のタグ検索装置を説明する図The figure explaining the conventional tag search device

符号の説明Explanation of symbols

１ 多巻きループアンテナ
２ 筐体
３ ＲＦ−ＩＤリーダーライター装置
４ 同軸ケーブル
５ アンテナ基板
６ アンテナ導体
７ コネクタ
８ 始端部
９ 終端部
１０ 接続部
１１ 伝送線路
１２ 共振整合回路部
１３ 磁束
１４ 磁性材料
１５ 支持台 DESCRIPTION OF SYMBOLS 1 Multi-winding loop antenna 2 Case 3 RF-ID reader / writer device 4 Coaxial cable 5 Antenna substrate 6 Antenna conductor 7 Connector 8 Start end portion 9 End portion 10 Connection portion 11 Transmission line 12 Resonance matching circuit portion 13 Magnetic flux 14 Magnetic material 15 Support Stand

Claims (10)

複数のＲＦ−ＩＤタグに電磁誘導により電力と送信データを供給し、前記ＲＦ−ＩＤタグから受信データを負荷変動により取得するＲＦＩＤリーダーライター装置に接続されるアンテナを備え、前記アンテナは多巻きループアンテナで構成され、多巻きループアンテナの開口面の中心軸に合致せず、且つ多巻きループアンテナの開口面を通らない、且つ前記中心軸に略平行な軸と、一つまたは複数のＲＦ−ＩＤタグのループアンテナの開口面の中心軸を略一致させて、多巻きループアンテナの外周側面の面上に、一直線上に複数のＲＦ−ＩＤタグを近接配置させたことを特徴とするＲＦ−ＩＤシステム。 An antenna connected to an RFID reader / writer device that supplies electric power and transmission data to a plurality of RF-ID tags by electromagnetic induction and obtains reception data from the RF-ID tag by load fluctuation, the antenna being a multi-turn loop An antenna, an axis that does not coincide with the central axis of the aperture surface of the multi-turn loop antenna, does not pass through the aperture surface of the multi-loop antenna, and is substantially parallel to the central axis; and one or more RF- The RF-characteristic is characterized in that a plurality of RF-ID tags are arranged close to each other in a straight line on the outer circumferential side surface of the multi-loop antenna with the central axis of the opening surface of the loop antenna of the ID tag substantially matched. ID system. 前記多巻きループアンテナの開口面の形状が、矩形もしくは楕円形でその高さｈと幅ｗとの比率が、ｈ：ｗ＝１：Ｎ（ただしＮ≧２）の条件を満足する扁平な構造であることを特徴とする請求項１に記載のＲＦ−ＩＤシステム。 A flat structure in which the shape of the opening surface of the multi-turn loop antenna is a rectangle or an ellipse, and the ratio of the height h to the width w satisfies the condition of h: w = 1: N (where N ≧ 2). The RF-ID system according to claim 1, wherein: 前記多巻きループアンテナの開口面Ｓの最大長ｗと全長Ｌとの比率が、ｗ：Ｌ＝１：Ｎ（ただしＮ≧２）の条件を満足する横長な構造であることを特徴とする請求項１に記載のＲＦ−ＩＤシステム。 The ratio of the maximum length w and the total length L of the opening surface S of the multi-turn loop antenna is a horizontally long structure that satisfies a condition of w: L = 1: N (where N ≧ 2). Item 4. The RF-ID system according to Item 1. 前記多巻きループアンテナを構成するアンテナ導体は金属（導電性）箔もしくは金属（導電性）薄板にて構成され、前記アンテナ導体の幅Ｗ、ピッチＰとの比率がＷ：Ｐ＝１：Ｎ（ただしＮ≦１）の条件を満足する横長な構造であることを特徴とする請求項１に記載のＲＦ−ＩＤシステム。 The antenna conductor constituting the multi-turn loop antenna is made of a metal (conductive) foil or a metal (conductive) thin plate, and the ratio of the width W and the pitch P of the antenna conductor is W: P = 1: N ( However, the RF-ID system according to claim 1, wherein the system has a horizontally long structure that satisfies a condition of N ≦ 1). 前記多巻きループアンテナを構成するアンテナ導体の巻き数ｎおよび多巻きループアンテナの全長Ｌ、幅Ｗ、ピッチＰとの関係は、多巻きループアンテナがコイルとしての自己共振点を超えない有限の値であることを特徴とする請求項１に記載のＲＦ−ＩＤシステム。 The relationship between the number of turns n of the antenna conductor constituting the multi-turn loop antenna and the total length L, width W, and pitch P of the multi-turn loop antenna is a finite value that does not exceed the self-resonance point of the coil as a coil. The RF-ID system according to claim 1, wherein: 前記多巻きループアンテナを構成するアンテナ導体は少なくとも一つの同一面上で第一のループと第二のループとの交差部を設け他の開口面以外の３面においてはアンテナ導体が、前記多巻きループアンテナの開口面の中心軸に対し直角な方向に平行して多巻きされたことを特徴とする請求項１に記載のＲＦ−ＩＤシステム。 The antenna conductor constituting the multi-turn loop antenna is provided with an intersection of the first loop and the second loop on at least one same surface, and the antenna conductor is provided on the three faces other than the other opening face. 2. The RF-ID system according to claim 1, wherein the RF-ID system is wound in parallel in a direction perpendicular to the central axis of the opening surface of the loop antenna. 前記多巻きループアンテナを構成するアンテナ導体の巻き始め部と巻き終わり部との間に伝送線路を設け、そのいずれか一端付近もしくは、中間点付近に共振回路部および同軸線路との整合回路部からなる共振整合回路部を設けたことを特徴とする請求項１から請求項６に記載のＲＦ−ＩＤシステム。 A transmission line is provided between the winding start portion and the winding end portion of the antenna conductor constituting the multi-turn loop antenna, and either from one end thereof or from the matching circuit portion with the coaxial circuit near the intermediate point The RF-ID system according to claim 1, further comprising a resonance matching circuit unit. 前記多巻きループアンテナの開口面内に磁性材料を充填したことを特徴とする請求項１からに請求項７に記載のＲＦ−ＩＤシステム。 8. The RF-ID system according to claim 1, wherein a magnetic material is filled in an opening surface of the multi-turn loop antenna. 多巻きループアンテナの開口面の中心軸に合致せず、前記多巻きループアンテナの開口面を通らない前記中心軸に略平行な軸と、
少なくとも一つのＲＦ−ＩＤタグのアンテナの開口面の中心軸とを略一致させて、
多巻きループアンテナの外周側面の面上に、前記ＲＦ−ＩＤタグが近接配置させたことを特徴とするＲＦ−ＩＤリーダーライター装置用アンテナ。 An axis that does not match the central axis of the opening surface of the multi-turn loop antenna and that is substantially parallel to the central axis that does not pass through the opening surface of the multi-turn loop antenna;
The central axis of the opening surface of the antenna of at least one RF-ID tag is substantially matched,
An antenna for an RF-ID reader / writer device, wherein the RF-ID tag is arranged close to the outer peripheral side surface of the multi-turn loop antenna. 請求項９に記載のＲＦ−ＩＤリーダーライター装置用アンテナを備え、ＲＦ−ＩＤタグに電磁誘導により電力と送信データを供給し、前記ＲＦ−ＩＤタグから受信データを負荷変動により取得することを特徴とするＲＦＩＤリーダーライター装置。 An RF-ID reader / writer device antenna according to claim 9 is provided, wherein power and transmission data are supplied to the RF-ID tag by electromagnetic induction, and received data is acquired from the RF-ID tag by load fluctuation. RFID reader / writer device.
JP2005226460A 2005-08-04 2005-08-04 Antenna for RF-ID reader / writer device, RF-ID reader / writer device using the antenna, and RF-ID system Expired - Fee Related JP4720348B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005226460A JP4720348B2 (en) 2005-08-04 2005-08-04 Antenna for RF-ID reader / writer device, RF-ID reader / writer device using the antenna, and RF-ID system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005226460A JP4720348B2 (en) 2005-08-04 2005-08-04 Antenna for RF-ID reader / writer device, RF-ID reader / writer device using the antenna, and RF-ID system

Publications (2)

Publication Number Publication Date
JP2007043535A true JP2007043535A (en) 2007-02-15
JP4720348B2 JP4720348B2 (en) 2011-07-13

Family

ID=37801090

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005226460A Expired - Fee Related JP4720348B2 (en) 2005-08-04 2005-08-04 Antenna for RF-ID reader / writer device, RF-ID reader / writer device using the antenna, and RF-ID system

Country Status (1)

Country Link
JP (1) JP4720348B2 (en)

Cited By (86)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009033485A (en) * 2007-07-27 2009-02-12 Panasonic Corp Antenna device, and radio communication equipment
US7857230B2 (en) 2007-07-18 2010-12-28 Murata Manufacturing Co., Ltd. Wireless IC device and manufacturing method thereof
US7871008B2 (en) 2008-06-25 2011-01-18 Murata Manufacturing Co., Ltd. Wireless IC device and manufacturing method thereof
US7931206B2 (en) 2007-05-10 2011-04-26 Murata Manufacturing Co., Ltd. Wireless IC device
US7967216B2 (en) 2008-05-22 2011-06-28 Murata Manufacturing Co., Ltd. Wireless IC device
US7997501B2 (en) 2007-07-17 2011-08-16 Murata Manufacturing Co., Ltd. Wireless IC device and electronic apparatus
US8031124B2 (en) 2007-01-26 2011-10-04 Murata Manufacturing Co., Ltd. Container with electromagnetic coupling module
US8070070B2 (en) 2007-12-26 2011-12-06 Murata Manufacturing Co., Ltd. Antenna device and radio frequency IC device
US8078106B2 (en) 2006-01-19 2011-12-13 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8081121B2 (en) 2006-10-27 2011-12-20 Murata Manufacturing Co., Ltd. Article having electromagnetic coupling module attached thereto
US8177138B2 (en) 2008-10-29 2012-05-15 Murata Manufacturing Co., Ltd. Radio IC device
US8179329B2 (en) 2008-03-03 2012-05-15 Murata Manufacturing Co., Ltd. Composite antenna
US8193939B2 (en) 2007-07-09 2012-06-05 Murata Manufacturing Co., Ltd. Wireless IC device
US8228765B2 (en) 2006-06-30 2012-07-24 Murata Manufacturing Co., Ltd. Optical disc
US8264357B2 (en) 2007-06-27 2012-09-11 Murata Manufacturing Co., Ltd. Wireless IC device
US8299968B2 (en) 2007-02-06 2012-10-30 Murata Manufacturing Co., Ltd. Packaging material with electromagnetic coupling module
US8299929B2 (en) 2006-09-26 2012-10-30 Murata Manufacturing Co., Ltd. Inductively coupled module and item with inductively coupled module
US8336786B2 (en) 2010-03-12 2012-12-25 Murata Manufacturing Co., Ltd. Wireless communication device and metal article
US8342416B2 (en) 2009-01-09 2013-01-01 Murata Manufacturing Co., Ltd. Wireless IC device, wireless IC module and method of manufacturing wireless IC module
US8360324B2 (en) 2007-04-09 2013-01-29 Murata Manufacturing Co., Ltd. Wireless IC device
US8360325B2 (en) 2008-04-14 2013-01-29 Murata Manufacturing Co., Ltd. Wireless IC device, electronic apparatus, and method for adjusting resonant frequency of wireless IC device
US8381997B2 (en) 2009-06-03 2013-02-26 Murata Manufacturing Co., Ltd. Radio frequency IC device and method of manufacturing the same
US8390459B2 (en) 2007-04-06 2013-03-05 Murata Manufacturing Co., Ltd. Wireless IC device
US8400365B2 (en) 2009-11-20 2013-03-19 Murata Manufacturing Co., Ltd. Antenna device and mobile communication terminal
US8400307B2 (en) 2007-07-18 2013-03-19 Murata Manufacturing Co., Ltd. Radio frequency IC device and electronic apparatus
US8418928B2 (en) 2009-04-14 2013-04-16 Murata Manufacturing Co., Ltd. Wireless IC device component and wireless IC device
US8424762B2 (en) 2007-04-14 2013-04-23 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8424769B2 (en) 2010-07-08 2013-04-23 Murata Manufacturing Co., Ltd. Antenna and RFID device
US8474725B2 (en) 2007-04-27 2013-07-02 Murata Manufacturing Co., Ltd. Wireless IC device
US8531346B2 (en) 2007-04-26 2013-09-10 Murata Manufacturing Co., Ltd. Wireless IC device
US8546927B2 (en) 2010-09-03 2013-10-01 Murata Manufacturing Co., Ltd. RFIC chip mounting structure
US8583043B2 (en) 2009-01-16 2013-11-12 Murata Manufacturing Co., Ltd. High-frequency device and wireless IC device
US8590797B2 (en) 2008-05-21 2013-11-26 Murata Manufacturing Co., Ltd. Wireless IC device
US8596545B2 (en) 2008-05-28 2013-12-03 Murata Manufacturing Co., Ltd. Component of wireless IC device and wireless IC device
US8602310B2 (en) 2010-03-03 2013-12-10 Murata Manufacturing Co., Ltd. Radio communication device and radio communication terminal
US8610636B2 (en) 2007-12-20 2013-12-17 Murata Manufacturing Co., Ltd. Radio frequency IC device
US8613395B2 (en) 2011-02-28 2013-12-24 Murata Manufacturing Co., Ltd. Wireless communication device
US8632014B2 (en) 2007-04-27 2014-01-21 Murata Manufacturing Co., Ltd. Wireless IC device
US8668151B2 (en) 2008-03-26 2014-03-11 Murata Manufacturing Co., Ltd. Wireless IC device
US8680971B2 (en) 2009-09-28 2014-03-25 Murata Manufacturing Co., Ltd. Wireless IC device and method of detecting environmental state using the device
US8692718B2 (en) 2008-11-17 2014-04-08 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US8718727B2 (en) 2009-12-24 2014-05-06 Murata Manufacturing Co., Ltd. Antenna having structure for multi-angled reception and mobile terminal including the antenna
US8720789B2 (en) 2012-01-30 2014-05-13 Murata Manufacturing Co., Ltd. Wireless IC device
US8740093B2 (en) 2011-04-13 2014-06-03 Murata Manufacturing Co., Ltd. Radio IC device and radio communication terminal
US8757500B2 (en) 2007-05-11 2014-06-24 Murata Manufacturing Co., Ltd. Wireless IC device
US8770489B2 (en) 2011-07-15 2014-07-08 Murata Manufacturing Co., Ltd. Radio communication device
US8797225B2 (en) 2011-03-08 2014-08-05 Murata Manufacturing Co., Ltd. Antenna device and communication terminal apparatus
US8797148B2 (en) 2008-03-03 2014-08-05 Murata Manufacturing Co., Ltd. Radio frequency IC device and radio communication system
US8810456B2 (en) 2009-06-19 2014-08-19 Murata Manufacturing Co., Ltd. Wireless IC device and coupling method for power feeding circuit and radiation plate
US8814056B2 (en) 2011-07-19 2014-08-26 Murata Manufacturing Co., Ltd. Antenna device, RFID tag, and communication terminal apparatus
US8847831B2 (en) 2009-07-03 2014-09-30 Murata Manufacturing Co., Ltd. Antenna and antenna module
US8853549B2 (en) 2009-09-30 2014-10-07 Murata Manufacturing Co., Ltd. Circuit substrate and method of manufacturing same
JP2014203139A (en) * 2013-04-01 2014-10-27 株式会社ユニバーサルエンターテインメント Storage device of token
US8870077B2 (en) 2008-08-19 2014-10-28 Murata Manufacturing Co., Ltd. Wireless IC device and method for manufacturing same
US8878739B2 (en) 2011-07-14 2014-11-04 Murata Manufacturing Co., Ltd. Wireless communication device
US8905296B2 (en) 2011-12-01 2014-12-09 Murata Manufacturing Co., Ltd. Wireless integrated circuit device and method of manufacturing the same
US8905316B2 (en) 2010-05-14 2014-12-09 Murata Manufacturing Co., Ltd. Wireless IC device
US8937576B2 (en) 2011-04-05 2015-01-20 Murata Manufacturing Co., Ltd. Wireless communication device
US8944335B2 (en) 2010-09-30 2015-02-03 Murata Manufacturing Co., Ltd. Wireless IC device
US8976075B2 (en) 2009-04-21 2015-03-10 Murata Manufacturing Co., Ltd. Antenna device and method of setting resonant frequency of antenna device
US8981906B2 (en) 2010-08-10 2015-03-17 Murata Manufacturing Co., Ltd. Printed wiring board and wireless communication system
US8991713B2 (en) 2011-01-14 2015-03-31 Murata Manufacturing Co., Ltd. RFID chip package and RFID tag
US8994605B2 (en) 2009-10-02 2015-03-31 Murata Manufacturing Co., Ltd. Wireless IC device and electromagnetic coupling module
US9024725B2 (en) 2009-11-04 2015-05-05 Murata Manufacturing Co., Ltd. Communication terminal and information processing system
US9024837B2 (en) 2010-03-31 2015-05-05 Murata Manufacturing Co., Ltd. Antenna and wireless communication device
US9077067B2 (en) 2008-07-04 2015-07-07 Murata Manufacturing Co., Ltd. Radio IC device
US9104950B2 (en) 2009-01-30 2015-08-11 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US9123996B2 (en) 2010-05-14 2015-09-01 Murata Manufacturing Co., Ltd. Wireless IC device
US9166291B2 (en) 2010-10-12 2015-10-20 Murata Manufacturing Co., Ltd. Antenna device and communication terminal apparatus
US9165239B2 (en) 2006-04-26 2015-10-20 Murata Manufacturing Co., Ltd. Electromagnetic-coupling-module-attached article
US9178279B2 (en) 2009-11-04 2015-11-03 Murata Manufacturing Co., Ltd. Wireless IC tag, reader-writer, and information processing system
US9231305B2 (en) 2008-10-24 2016-01-05 Murata Manufacturing Co., Ltd. Wireless IC device
US9236651B2 (en) 2010-10-21 2016-01-12 Murata Manufacturing Co., Ltd. Communication terminal device
US9281873B2 (en) 2008-05-26 2016-03-08 Murata Manufacturing Co., Ltd. Wireless IC device system and method of determining authenticity of wireless IC device
US9378452B2 (en) 2011-05-16 2016-06-28 Murata Manufacturing Co., Ltd. Radio IC device
US9444143B2 (en) 2009-10-16 2016-09-13 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US9460320B2 (en) 2009-10-27 2016-10-04 Murata Manufacturing Co., Ltd. Transceiver and radio frequency identification tag reader
US9460376B2 (en) 2007-07-18 2016-10-04 Murata Manufacturing Co., Ltd. Radio IC device
US9461363B2 (en) 2009-11-04 2016-10-04 Murata Manufacturing Co., Ltd. Communication terminal and information processing system
US9543642B2 (en) 2011-09-09 2017-01-10 Murata Manufacturing Co., Ltd. Antenna device and wireless device
US9558384B2 (en) 2010-07-28 2017-01-31 Murata Manufacturing Co., Ltd. Antenna apparatus and communication terminal instrument
US9692128B2 (en) 2012-02-24 2017-06-27 Murata Manufacturing Co., Ltd. Antenna device and wireless communication device
US9727765B2 (en) 2010-03-24 2017-08-08 Murata Manufacturing Co., Ltd. RFID system including a reader/writer and RFID tag
US9761923B2 (en) 2011-01-05 2017-09-12 Murata Manufacturing Co., Ltd. Wireless communication device
US10013650B2 (en) 2010-03-03 2018-07-03 Murata Manufacturing Co., Ltd. Wireless communication module and wireless communication device
US10235544B2 (en) 2012-04-13 2019-03-19 Murata Manufacturing Co., Ltd. Inspection method and inspection device for RFID tag

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3616955B1 (en) * 1959-03-05 1961-09-20
JP2001101285A (en) * 1999-09-29 2001-04-13 Hitachi Kokusai Electric Inc System for managing article
JP2002521757A (en) * 1998-07-20 2002-07-16 インテグレイテッド シリコン デザイン ピーティーワイ．エルティーディ． Metal shielded electronic labeling system
JP2005165839A (en) * 2003-12-04 2005-06-23 Nippon Signal Co Ltd:The Reader/writer, ic tag, article control device, and optical disk device
JP2005182637A (en) * 2003-12-22 2005-07-07 Shinko Electric Ind Co Ltd Reader/writer antenna for ic tag
JP2007004678A (en) * 2005-06-27 2007-01-11 Akiba:Kk Retrieval management system using rfid

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS3616955B1 (en) * 1959-03-05 1961-09-20
JP2002521757A (en) * 1998-07-20 2002-07-16 インテグレイテッド シリコン デザイン ピーティーワイ．エルティーディ． Metal shielded electronic labeling system
JP2001101285A (en) * 1999-09-29 2001-04-13 Hitachi Kokusai Electric Inc System for managing article
JP2005165839A (en) * 2003-12-04 2005-06-23 Nippon Signal Co Ltd:The Reader/writer, ic tag, article control device, and optical disk device
JP2005182637A (en) * 2003-12-22 2005-07-07 Shinko Electric Ind Co Ltd Reader/writer antenna for ic tag
JP2007004678A (en) * 2005-06-27 2007-01-11 Akiba:Kk Retrieval management system using rfid

Cited By (113)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8326223B2 (en) 2006-01-19 2012-12-04 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8676117B2 (en) 2006-01-19 2014-03-18 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8725071B2 (en) 2006-01-19 2014-05-13 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8078106B2 (en) 2006-01-19 2011-12-13 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US9165239B2 (en) 2006-04-26 2015-10-20 Murata Manufacturing Co., Ltd. Electromagnetic-coupling-module-attached article
US8228765B2 (en) 2006-06-30 2012-07-24 Murata Manufacturing Co., Ltd. Optical disc
US8299929B2 (en) 2006-09-26 2012-10-30 Murata Manufacturing Co., Ltd. Inductively coupled module and item with inductively coupled module
US8081121B2 (en) 2006-10-27 2011-12-20 Murata Manufacturing Co., Ltd. Article having electromagnetic coupling module attached thereto
US8031124B2 (en) 2007-01-26 2011-10-04 Murata Manufacturing Co., Ltd. Container with electromagnetic coupling module
US8299968B2 (en) 2007-02-06 2012-10-30 Murata Manufacturing Co., Ltd. Packaging material with electromagnetic coupling module
US8390459B2 (en) 2007-04-06 2013-03-05 Murata Manufacturing Co., Ltd. Wireless IC device
US8360324B2 (en) 2007-04-09 2013-01-29 Murata Manufacturing Co., Ltd. Wireless IC device
US8424762B2 (en) 2007-04-14 2013-04-23 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8531346B2 (en) 2007-04-26 2013-09-10 Murata Manufacturing Co., Ltd. Wireless IC device
US8474725B2 (en) 2007-04-27 2013-07-02 Murata Manufacturing Co., Ltd. Wireless IC device
US8632014B2 (en) 2007-04-27 2014-01-21 Murata Manufacturing Co., Ltd. Wireless IC device
US7931206B2 (en) 2007-05-10 2011-04-26 Murata Manufacturing Co., Ltd. Wireless IC device
US8757500B2 (en) 2007-05-11 2014-06-24 Murata Manufacturing Co., Ltd. Wireless IC device
US8264357B2 (en) 2007-06-27 2012-09-11 Murata Manufacturing Co., Ltd. Wireless IC device
US8662403B2 (en) 2007-07-04 2014-03-04 Murata Manufacturing Co., Ltd. Wireless IC device and component for wireless IC device
US8552870B2 (en) 2007-07-09 2013-10-08 Murata Manufacturing Co., Ltd. Wireless IC device
US8193939B2 (en) 2007-07-09 2012-06-05 Murata Manufacturing Co., Ltd. Wireless IC device
US8191791B2 (en) 2007-07-17 2012-06-05 Murata Manufacturing Co., Ltd. Wireless IC device and electronic apparatus
US8413907B2 (en) 2007-07-17 2013-04-09 Murata Manufacturing Co., Ltd. Wireless IC device and electronic apparatus
US7997501B2 (en) 2007-07-17 2011-08-16 Murata Manufacturing Co., Ltd. Wireless IC device and electronic apparatus
US8400307B2 (en) 2007-07-18 2013-03-19 Murata Manufacturing Co., Ltd. Radio frequency IC device and electronic apparatus
US9830552B2 (en) 2007-07-18 2017-11-28 Murata Manufacturing Co., Ltd. Radio IC device
US7857230B2 (en) 2007-07-18 2010-12-28 Murata Manufacturing Co., Ltd. Wireless IC device and manufacturing method thereof
US9460376B2 (en) 2007-07-18 2016-10-04 Murata Manufacturing Co., Ltd. Radio IC device
JP2009033485A (en) * 2007-07-27 2009-02-12 Panasonic Corp Antenna device, and radio communication equipment
US7786943B2 (en) 2007-07-27 2010-08-31 Panasonic Corporation Antenna device and radio communication system
US8610636B2 (en) 2007-12-20 2013-12-17 Murata Manufacturing Co., Ltd. Radio frequency IC device
US8915448B2 (en) 2007-12-26 2014-12-23 Murata Manufacturing Co., Ltd. Antenna device and radio frequency IC device
US8070070B2 (en) 2007-12-26 2011-12-06 Murata Manufacturing Co., Ltd. Antenna device and radio frequency IC device
US8360330B2 (en) 2007-12-26 2013-01-29 Murata Manufacturing Co., Ltd. Antenna device and radio frequency IC device
US8797148B2 (en) 2008-03-03 2014-08-05 Murata Manufacturing Co., Ltd. Radio frequency IC device and radio communication system
US8179329B2 (en) 2008-03-03 2012-05-15 Murata Manufacturing Co., Ltd. Composite antenna
US8668151B2 (en) 2008-03-26 2014-03-11 Murata Manufacturing Co., Ltd. Wireless IC device
US8360325B2 (en) 2008-04-14 2013-01-29 Murata Manufacturing Co., Ltd. Wireless IC device, electronic apparatus, and method for adjusting resonant frequency of wireless IC device
US8960557B2 (en) 2008-05-21 2015-02-24 Murata Manufacturing Co., Ltd. Wireless IC device
US8973841B2 (en) 2008-05-21 2015-03-10 Murata Manufacturing Co., Ltd. Wireless IC device
US8590797B2 (en) 2008-05-21 2013-11-26 Murata Manufacturing Co., Ltd. Wireless IC device
US9022295B2 (en) 2008-05-21 2015-05-05 Murata Manufacturing Co., Ltd. Wireless IC device
US8047445B2 (en) 2008-05-22 2011-11-01 Murata Manufacturing Co., Ltd. Wireless IC device and method of manufacturing the same
US7967216B2 (en) 2008-05-22 2011-06-28 Murata Manufacturing Co., Ltd. Wireless IC device
US9281873B2 (en) 2008-05-26 2016-03-08 Murata Manufacturing Co., Ltd. Wireless IC device system and method of determining authenticity of wireless IC device
US8596545B2 (en) 2008-05-28 2013-12-03 Murata Manufacturing Co., Ltd. Component of wireless IC device and wireless IC device
US8011589B2 (en) 2008-06-25 2011-09-06 Murata Manufacturing Co., Ltd. Wireless IC device and manufacturing method thereof
US7871008B2 (en) 2008-06-25 2011-01-18 Murata Manufacturing Co., Ltd. Wireless IC device and manufacturing method thereof
US9077067B2 (en) 2008-07-04 2015-07-07 Murata Manufacturing Co., Ltd. Radio IC device
US8870077B2 (en) 2008-08-19 2014-10-28 Murata Manufacturing Co., Ltd. Wireless IC device and method for manufacturing same
US9231305B2 (en) 2008-10-24 2016-01-05 Murata Manufacturing Co., Ltd. Wireless IC device
US8177138B2 (en) 2008-10-29 2012-05-15 Murata Manufacturing Co., Ltd. Radio IC device
US8692718B2 (en) 2008-11-17 2014-04-08 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US8917211B2 (en) 2008-11-17 2014-12-23 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US8544759B2 (en) 2009-01-09 2013-10-01 Murata Manufacturing., Ltd. Wireless IC device, wireless IC module and method of manufacturing wireless IC module
US8342416B2 (en) 2009-01-09 2013-01-01 Murata Manufacturing Co., Ltd. Wireless IC device, wireless IC module and method of manufacturing wireless IC module
US8583043B2 (en) 2009-01-16 2013-11-12 Murata Manufacturing Co., Ltd. High-frequency device and wireless IC device
US9104950B2 (en) 2009-01-30 2015-08-11 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US8690070B2 (en) 2009-04-14 2014-04-08 Murata Manufacturing Co., Ltd. Wireless IC device component and wireless IC device
US8418928B2 (en) 2009-04-14 2013-04-16 Murata Manufacturing Co., Ltd. Wireless IC device component and wireless IC device
US8876010B2 (en) 2009-04-14 2014-11-04 Murata Manufacturing Co., Ltd Wireless IC device component and wireless IC device
US8976075B2 (en) 2009-04-21 2015-03-10 Murata Manufacturing Co., Ltd. Antenna device and method of setting resonant frequency of antenna device
US9564678B2 (en) 2009-04-21 2017-02-07 Murata Manufacturing Co., Ltd. Antenna device and method of setting resonant frequency of antenna device
US9203157B2 (en) 2009-04-21 2015-12-01 Murata Manufacturing Co., Ltd. Antenna device and method of setting resonant frequency of antenna device
US8381997B2 (en) 2009-06-03 2013-02-26 Murata Manufacturing Co., Ltd. Radio frequency IC device and method of manufacturing the same
US8810456B2 (en) 2009-06-19 2014-08-19 Murata Manufacturing Co., Ltd. Wireless IC device and coupling method for power feeding circuit and radiation plate
US8847831B2 (en) 2009-07-03 2014-09-30 Murata Manufacturing Co., Ltd. Antenna and antenna module
US8680971B2 (en) 2009-09-28 2014-03-25 Murata Manufacturing Co., Ltd. Wireless IC device and method of detecting environmental state using the device
US8853549B2 (en) 2009-09-30 2014-10-07 Murata Manufacturing Co., Ltd. Circuit substrate and method of manufacturing same
US8994605B2 (en) 2009-10-02 2015-03-31 Murata Manufacturing Co., Ltd. Wireless IC device and electromagnetic coupling module
US9117157B2 (en) 2009-10-02 2015-08-25 Murata Manufacturing Co., Ltd. Wireless IC device and electromagnetic coupling module
US9444143B2 (en) 2009-10-16 2016-09-13 Murata Manufacturing Co., Ltd. Antenna and wireless IC device
US9460320B2 (en) 2009-10-27 2016-10-04 Murata Manufacturing Co., Ltd. Transceiver and radio frequency identification tag reader
US9024725B2 (en) 2009-11-04 2015-05-05 Murata Manufacturing Co., Ltd. Communication terminal and information processing system
US9461363B2 (en) 2009-11-04 2016-10-04 Murata Manufacturing Co., Ltd. Communication terminal and information processing system
US9178279B2 (en) 2009-11-04 2015-11-03 Murata Manufacturing Co., Ltd. Wireless IC tag, reader-writer, and information processing system
US8704716B2 (en) 2009-11-20 2014-04-22 Murata Manufacturing Co., Ltd. Antenna device and mobile communication terminal
US8400365B2 (en) 2009-11-20 2013-03-19 Murata Manufacturing Co., Ltd. Antenna device and mobile communication terminal
US8718727B2 (en) 2009-12-24 2014-05-06 Murata Manufacturing Co., Ltd. Antenna having structure for multi-angled reception and mobile terminal including the antenna
US10013650B2 (en) 2010-03-03 2018-07-03 Murata Manufacturing Co., Ltd. Wireless communication module and wireless communication device
US8602310B2 (en) 2010-03-03 2013-12-10 Murata Manufacturing Co., Ltd. Radio communication device and radio communication terminal
US8336786B2 (en) 2010-03-12 2012-12-25 Murata Manufacturing Co., Ltd. Wireless communication device and metal article
US8528829B2 (en) 2010-03-12 2013-09-10 Murata Manufacturing Co., Ltd. Wireless communication device and metal article
US9727765B2 (en) 2010-03-24 2017-08-08 Murata Manufacturing Co., Ltd. RFID system including a reader/writer and RFID tag
US9024837B2 (en) 2010-03-31 2015-05-05 Murata Manufacturing Co., Ltd. Antenna and wireless communication device
US8905316B2 (en) 2010-05-14 2014-12-09 Murata Manufacturing Co., Ltd. Wireless IC device
US9123996B2 (en) 2010-05-14 2015-09-01 Murata Manufacturing Co., Ltd. Wireless IC device
US8424769B2 (en) 2010-07-08 2013-04-23 Murata Manufacturing Co., Ltd. Antenna and RFID device
US9558384B2 (en) 2010-07-28 2017-01-31 Murata Manufacturing Co., Ltd. Antenna apparatus and communication terminal instrument
US8981906B2 (en) 2010-08-10 2015-03-17 Murata Manufacturing Co., Ltd. Printed wiring board and wireless communication system
US8546927B2 (en) 2010-09-03 2013-10-01 Murata Manufacturing Co., Ltd. RFIC chip mounting structure
US8944335B2 (en) 2010-09-30 2015-02-03 Murata Manufacturing Co., Ltd. Wireless IC device
US9166291B2 (en) 2010-10-12 2015-10-20 Murata Manufacturing Co., Ltd. Antenna device and communication terminal apparatus
US9236651B2 (en) 2010-10-21 2016-01-12 Murata Manufacturing Co., Ltd. Communication terminal device
US9761923B2 (en) 2011-01-05 2017-09-12 Murata Manufacturing Co., Ltd. Wireless communication device
US8991713B2 (en) 2011-01-14 2015-03-31 Murata Manufacturing Co., Ltd. RFID chip package and RFID tag
US8613395B2 (en) 2011-02-28 2013-12-24 Murata Manufacturing Co., Ltd. Wireless communication device
US8960561B2 (en) 2011-02-28 2015-02-24 Murata Manufacturing Co., Ltd. Wireless communication device
US8757502B2 (en) 2011-02-28 2014-06-24 Murata Manufacturing Co., Ltd. Wireless communication device
US8797225B2 (en) 2011-03-08 2014-08-05 Murata Manufacturing Co., Ltd. Antenna device and communication terminal apparatus
US8937576B2 (en) 2011-04-05 2015-01-20 Murata Manufacturing Co., Ltd. Wireless communication device
US8740093B2 (en) 2011-04-13 2014-06-03 Murata Manufacturing Co., Ltd. Radio IC device and radio communication terminal
US9378452B2 (en) 2011-05-16 2016-06-28 Murata Manufacturing Co., Ltd. Radio IC device
US8878739B2 (en) 2011-07-14 2014-11-04 Murata Manufacturing Co., Ltd. Wireless communication device
US8770489B2 (en) 2011-07-15 2014-07-08 Murata Manufacturing Co., Ltd. Radio communication device
US8814056B2 (en) 2011-07-19 2014-08-26 Murata Manufacturing Co., Ltd. Antenna device, RFID tag, and communication terminal apparatus
US9543642B2 (en) 2011-09-09 2017-01-10 Murata Manufacturing Co., Ltd. Antenna device and wireless device
US8905296B2 (en) 2011-12-01 2014-12-09 Murata Manufacturing Co., Ltd. Wireless integrated circuit device and method of manufacturing the same
US8720789B2 (en) 2012-01-30 2014-05-13 Murata Manufacturing Co., Ltd. Wireless IC device
US9692128B2 (en) 2012-02-24 2017-06-27 Murata Manufacturing Co., Ltd. Antenna device and wireless communication device
US10235544B2 (en) 2012-04-13 2019-03-19 Murata Manufacturing Co., Ltd. Inspection method and inspection device for RFID tag
JP2014203139A (en) * 2013-04-01 2014-10-27 株式会社ユニバーサルエンターテインメント Storage device of token

Also Published As

Publication number Publication date
JP4720348B2 (en) 2011-07-13

Similar Documents

Publication Publication Date Title
JP4720348B2 (en) Antenna for RF-ID reader / writer device, RF-ID reader / writer device using the antenna, and RF-ID system
KR101795545B1 (en) Combo antenna unit for Wireless power receive module and Wireless power receive module including the same
US9083073B2 (en) Thin chassis near field communication (NFC) antenna integration
JP2007164479A (en) Antenna for rf-id reader/writer device, and rf-id reader/writer device and rf-id system using the device
JP5282898B2 (en) Antenna device
US9627128B2 (en) Antenna module, communication device and method of manufacturing antenna module
EP2221920A1 (en) Coil antenna and non-contact information medium
US8730120B2 (en) Transmission/reception antenna and transmission/reception device using same
US8770489B2 (en) Radio communication device
JP2006129431A (en) Loop antenna unit and radio communication medium processor
WO2018079718A1 (en) Antenna-mounted communication ic unit and antenna-mounted communication ic unit equipped with conductor
JP4962190B2 (en) ANTENNA DEVICE AND WIRELESS COMMUNICATION DEVICE
JP2013081072A (en) Antenna device and communication terminal device
JP5003653B2 (en) Antenna device
US10122065B2 (en) Antenna device, card information medium, electronic apparatus, and method for manufacturing antenna device
JP4873158B2 (en) RFID reader device
JP2006101370A (en) Antenna device
JP5720271B2 (en) Case for optical recording medium, boost antenna, and management system
JP5282896B2 (en) Antenna device
US20190294948A1 (en) Antenna
JP4952439B2 (en) ANTENNA DEVICE AND WIRELESS COMMUNICATION SYSTEM
JP2007043245A (en) Antenna, and reader-writer
JP2006101109A (en) Antenna device
JP2009075966A (en) Non-contact type ic card communication device
JP6555320B2 (en) Wireless IC tag and RFID system

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080410

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20091126

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20101221

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110217

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110308

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110321

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140415

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140415

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees