JP4994013B2 - RFID tag holder and RFID tag reading distance limiting method - Google Patents

RFID tag holder and RFID tag reading distance limiting method Download PDF

Info

Publication number
JP4994013B2
JP4994013B2 JP2006334712A JP2006334712A JP4994013B2 JP 4994013 B2 JP4994013 B2 JP 4994013B2 JP 2006334712 A JP2006334712 A JP 2006334712A JP 2006334712 A JP2006334712 A JP 2006334712A JP 4994013 B2 JP4994013 B2 JP 4994013B2
Authority
JP
Japan
Prior art keywords
rfid tag
metal reflector
distance
shaped metal
reading distance
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.)
Expired - Fee Related
Application number
JP2006334712A
Other languages
Japanese (ja)
Other versions
JP2008146472A (en
Inventor
哲也 田原
眞和 河村
寛 津嶋
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.)
Hitachi Plant Mechanics Co Ltd
Original Assignee
Hitachi Plant Mechanics 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 Hitachi Plant Mechanics Co Ltd filed Critical Hitachi Plant Mechanics Co Ltd
Priority to JP2006334712A priority Critical patent/JP4994013B2/en
Publication of JP2008146472A publication Critical patent/JP2008146472A/en
Application granted granted Critical
Publication of JP4994013B2 publication Critical patent/JP4994013B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Near-Field Transmission Systems (AREA)

Description

本発明は、ＲＦＩＤタグホルダ及びＲＦＩＤタグ読取距離制限方法に関し、特にＲＦＩＤとこのデータをリーダで読取る構成において、ＲＦＩＤタグの読取距離を拡大、もしくは読取距離の選択が可能な技術に関する。   The present invention relates to an RFID tag holder and an RFID tag reading distance limiting method, and more particularly, to a technique capable of expanding an RFID tag reading distance or selecting a reading distance in a configuration in which an RFID and this data are read by a reader.

従来、ＲＦＩＤタグを使用しての物品管理は、管理の対象となる物品にＲＦＩＤタグを取り付け、ＲＦＩＤタグの情報をＲＦＩＤリーダで読取ることにより、物品の属性情報を管理しており、多様な提案がなされている。
非特許文献１の記事では、ＲＦＩＤリーダ（＝アンテナ）と２．４５ＧＨｚのマイクロ波を使ったパッシブタイプＲＦＩＤタグ（＝無線ＩＣタグ）の読取距離は、ＲＦＩＤタグの背面に平型金属製反射板（＝金属）を設置して拡大を実現している。しかし、平型金属製反射板だけでの読取距離拡大は約２００％である。
また、特許文献１では、金属製電波反射部材を非金属製コンテナ壁面の内側に設置しており、ＲＦＩＤタグはホルダに格納され、金属製電波反射部材とは非金属製コンテナの壁面を介して一定の距離になっている。このため、読取距離の拡大は可能であるが、読取距離の選択をする事はできない。さらに、特許文献１ではＲＦＩＤタグと金属製電波反射部材との間隔を調整する手段を示しているが、その場合の読取距離拡大も金属製電波反射部材を設置しない場合と比較し、非特許文献１の記事と同様に約２００％となっている。
特開２００３−１９８４２２号公報 日経ＢＰ社「日経ＲＦＩＤテクノロジ」２００４年８月発行 Conventionally, in the article management using RFID tags, the RFID tag is attached to the article to be managed, and the attribute information of the article is managed by reading the information of the RFID tag with the RFID reader. Has been made.
In the article of Non-Patent Document 1, the reading distance between an RFID reader (= antenna) and a passive type RFID tag (= wireless IC tag) using a microwave of 2.45 GHz is a flat metal reflector on the back of the RFID tag. (= Metal) is installed to realize expansion. However, the enlargement of the reading distance with only the flat metal reflector is about 200%.
Moreover, in patent document 1, the metal radio wave reflection member is installed inside the non-metallic container wall surface, the RFID tag is stored in the holder, and the metal radio wave reflection member is interposed through the wall surface of the non-metallic container. It is a certain distance. For this reason, the reading distance can be enlarged, but the reading distance cannot be selected. Further, Patent Document 1 shows means for adjusting the distance between the RFID tag and the metal radio wave reflection member. However, in this case, the reading distance can be increased as compared with the case where the metal radio wave reflection member is not installed. Like the article 1, it is about 200%.
JP 2003-198422 A Nikkei BP "Nikkei RFID technology" issued in August 2004

ＲＦＩＤタグの読取距離は長い方が良いと考えられているが、ＲＦＩＤタグの背面に平型金属製反射板を設置するだけでは、通常の約２００％程度しか拡大できず、さらに長い読取距離を求められていた。また、貼付対象物やＲＦＩＤタグの利用目的によっては、読取距離を最大距離とせずに一定距離に制限する場合がある。   Although it is considered that the reading distance of the RFID tag is longer, it is possible to enlarge only about 200% of the usual by simply installing a flat metal reflector on the back of the RFID tag. It was sought after. Further, depending on the purpose of use of the object to be pasted and the RFID tag, the reading distance may be limited to a certain distance instead of the maximum distance.

本発明は、ＲＦＩＤタグの読取距離を拡大、もしくは読取距離を制限可能なＲＦＩＤタグホルダ及びＲＦＩＤ読取距離制限方法を提供するものである。   The present invention provides an RFID tag holder and an RFID reading distance limiting method capable of expanding the reading distance of the RFID tag or limiting the reading distance.

本発明は、貼付対象物の情報を格納するパッシブタイプＲＦＩＤタグを搭載するとともに、マイクロ波を使い前記ＲＦＩＤタグが格納する貼付対象物の情報を読み取るＲＦＩＤリーダに対するＲＦＩＤタグの背面位置にＶ字型金属製反射板を設置したＲＦＩＤタグホルダである。   The present invention is equipped with a passive type RFID tag for storing information on an object to be pasted, and at the back of the RFID tag with respect to an RFID reader that reads information on the object to be pasted stored in the RFID tag using a microwave. An RFID tag holder provided with a metal reflector.

また、本発明は、前記Ｖ字型金属製反射板のＶ字角度の変更が可能であり、前記ＲＦＩＤリーダの読取距離に応じて、前記Ｖ字型金属製反射板のＶ字角度が９０度〜１７０度の間で選択されるＲＦＩＤタグホルダである。   In the present invention, the V-shaped angle of the V-shaped metal reflector can be changed, and the V-shaped angle of the V-shaped metal reflector is 90 degrees according to the reading distance of the RFID reader. RFID tag holder selected between ˜170 degrees.

そして、本発明は、前記Ｖ字型金属製反射板と前記ＲＦＩＤタグとの距離の変更が可能であり、前記マイクロ波の波長が２．４５ＧＨｚで、前記ＲＦＩＤリーダの読取距離に応じて、前記Ｖ字型金属製反射板とＲＦＩＤタグとの距離が１２ｍｍ〜４５ｍｍの間で選択されるＲＦＩＤタグホルダである。   In the present invention, the distance between the V-shaped metal reflector and the RFID tag can be changed, and the wavelength of the microwave is 2.45 GHz, depending on the reading distance of the RFID reader, This is an RFID tag holder in which the distance between the V-shaped metal reflector and the RFID tag is selected between 12 mm and 45 mm.

更に、本発明は、パッシブタイプＲＦＩＤタグが格納する情報を、マイクロ波を使って読み取るＲＦＩＤリーダに対する前記ＲＦＩＤタグの背面位置に設置されたＶ字型金属製反射板の角度を、前記ＲＦＩＤリーダの読取距離に応じて変更し、前記読取距離を制限するＲＦＩＤタグ読取距離制限方法である。   Furthermore, the present invention relates to the angle of the V-shaped metal reflector installed at the back surface of the RFID tag with respect to the RFID reader that reads information stored in the passive type RFID tag using microwaves. This is an RFID tag reading distance limiting method that changes according to the reading distance and limits the reading distance.

本発明によれば、ＲＦＩＤリーダと２．４５ＧＨｚのマイクロ波を使ったパッシブタイプＲＦＩＤタグの背面に設置した平型金属製反射板を９０度〜１７０度折り曲げたＶ字型にし、そのＶ字型金属製反射板とＲＦＩＤタグとの距離を１２ｍｍ〜４５ｍｍの間で選択する事ができるＲＦＩＤタグであり、その読取距離を拡大、および読取距離を選択することができる。   According to the present invention, a flat metal reflector installed on the back side of a passive RFID tag using an RFID reader and a 2.45 GHz microwave is bent into 90 degrees to 170 degrees, and the V shape is obtained. The RFID tag can select a distance between the metal reflector and the RFID tag between 12 mm and 45 mm. The reading distance can be enlarged and the reading distance can be selected.

本発明を実施するための最良の形態を説明する。
以下に、本発明のＲＦＩＤタグホルダ及びＲＦＩＤタグ読取距離制限方法の実施例を、図１〜図３により説明する。 The best mode for carrying out the present invention will be described.
Embodiments of an RFID tag holder and an RFID tag reading distance limiting method according to the present invention will be described below with reference to FIGS.

実施例を説明する。図１において、１は２．４５ＧＨｚのパッシブ型のＲＦＩＤタグ、２はＲＦＩＤタグホルダで、ＲＦＩＤタグ１を設置する切り欠き部を有し、切り欠き部から一定の距離ｂにＶ字型金属製反射板３を配置し、全体を例えばセラミックで包含する構成で形成している。４はＲＦＩＤリーダ、５は貼付対象物である。   Examples will be described. In FIG. 1, 1 is a 2.45 GHz passive RFID tag, 2 is an RFID tag holder, and has a notch portion for installing the RFID tag 1, and has a V-shaped metal reflection at a certain distance b from the notch portion. The plate 3 is arranged and formed so as to include the whole with, for example, ceramic. 4 is an RFID reader, and 5 is an object to be attached.

図２はＶ字型金属製反射板３の配置方法に関する特性の説明図であり、Ｖ字型金属製反射板３とＲＦＩＤタグ１との距離ｂと、ＲＦＩＤタグ１とＲＦＩＤリーダ４との読取距離Ｌの関係を、Ｖ字型金属製反射板３の角度ａをパラメータにして示したものである。本図から、読取距離Ｌは、Ｖ字型金属製反射板３とＲＦＩＤタグ１との距離ｂが１２ｍｍ〜４５ｍｍの範囲で変化するとき、Ｖ字型金属製反射板３の角度ａを変化させることにより読取距離Ｌを拡大させ、あるいは読取距離Ｌを制限できることを確認できる。また、読取距離Ｌは、Ｖ字型金属製反射板３とＲＦＩＤタグ１との距離ｂが４４ｍｍでＶ字型金属製反射板３の角度ａが１１０度の場合に、１１５０ｍｍのピーク値が発生することが確認できる。本値は、ＲＦＩＤタグ１のみでＶ字型金属製反射板を使用しない場合の読取距離３００ｍｍに対して、約４００％となる。   FIG. 2 is an explanatory diagram of characteristics relating to the arrangement method of the V-shaped metal reflector 3, and the distance b between the V-shaped metal reflector 3 and the RFID tag 1 and the reading between the RFID tag 1 and the RFID reader 4. The relationship of the distance L is shown using the angle a of the V-shaped metal reflector 3 as a parameter. From this figure, the reading distance L changes the angle a of the V-shaped metal reflector 3 when the distance b between the V-shaped metal reflector 3 and the RFID tag 1 changes in the range of 12 mm to 45 mm. Thus, it can be confirmed that the reading distance L can be enlarged or the reading distance L can be limited. The reading distance L has a peak value of 1150 mm when the distance b between the V-shaped metal reflector 3 and the RFID tag 1 is 44 mm and the angle a of the V-shaped metal reflector 3 is 110 degrees. It can be confirmed. This value is about 400% with respect to a reading distance of 300 mm when only the RFID tag 1 is used and no V-shaped metal reflector is used.

図３は、Ｖ字型金属製反射板３の角度ａと、ＲＦＩＤタグ１とＲＦＩＤリーダ４との読取距離Ｌの関係を、図２においてＶ字型金属製反射板３とＲＦＩＤタグ１との距離ｂが２０ｍｍ及び４４ｍｍの場合について示したものである。本図から、ＲＦＩＤタグ１とＲＦＩＤリーダ４との読取距離Ｌは、Ｖ字型金属製反射板３とＲＦＩＤタグ１との距離ｂの相違により、ピーク値が発生するＶ字型金属製反射板３の角度ａが異なることが確認できる。Ｖ字型金属製反射板３とＲＦＩＤタグ１との距離ｂが２０ｍｍの場合は、読取距離Ｌのピーク値は、Ｖ字型金属製反射板３の角度ａが１５０度から１７０度付近で発生し、その前後では緩やかな曲線で変化している。Ｖ字型金属製反射板３とＲＦＩＤタグ１との距離ｂが４４ｍｍの場合は、読取距離Ｌのピーク値は、Ｖ字型金属製反射板３の角度ａが１００度から１２０度付近で発生し、その前後では緩やかな曲線で変化している。この結果より、読取距離Ｌを調整したい場合には、このような曲線関係を利用することができる。このようにＶ字型金属製反射板３は、図２及び図３に示すように、角度ａ及びＲＦＩＤタグ１との距離ｂを変化させ、所望する読取距離Ｌに拡大及び制限して配置する。   3 shows the relationship between the angle “a” of the V-shaped metal reflector 3 and the reading distance L between the RFID tag 1 and the RFID reader 4, and the relationship between the V-shaped metal reflector 3 and the RFID tag 1 in FIG. The case where the distance b is 20 mm and 44 mm is shown. From this figure, the reading distance L between the RFID tag 1 and the RFID reader 4 is a V-shaped metal reflecting plate in which a peak value is generated due to the difference in the distance b between the V-shaped metal reflecting plate 3 and the RFID tag 1. It can be confirmed that the angle a of 3 is different. When the distance b between the V-shaped metal reflector 3 and the RFID tag 1 is 20 mm, the peak value of the reading distance L occurs when the angle a of the V-shaped metal reflector 3 is between 150 degrees and 170 degrees. However, before and after that, it changes with a gentle curve. When the distance b between the V-shaped metal reflector 3 and the RFID tag 1 is 44 mm, the peak value of the reading distance L occurs when the angle a of the V-shaped metal reflector 3 is between 100 degrees and 120 degrees. However, before and after that, it changes with a gentle curve. From this result, when it is desired to adjust the reading distance L, such a curve relationship can be used. Thus, as shown in FIGS. 2 and 3, the V-shaped metal reflector 3 is arranged by changing the angle a and the distance b with the RFID tag 1 so as to expand and limit the desired reading distance L. .

図４は、ＲＦＩＤタグ１の背面に平型金属製反射板６を設置した従来の読取距離拡大方法を示す。図５は、平型金属製反射板６の配置方法に関する説明図であり、平型金属製反射板６とＲＦＩＤタグ１との距離ｂと、ＲＦＩＤタグ１とＲＦＩＤリーダ４との読取距離Ｌの関係を示したものである。この時の読取距離の最大値８３８ｍｍに対しても、Ｖ字型金属製反射板での最大値は約１４０％となる。   FIG. 4 shows a conventional reading distance expansion method in which a flat metal reflector 6 is installed on the back surface of the RFID tag 1. FIG. 5 is an explanatory diagram regarding a method for arranging the flat metal reflector 6. The distance b between the flat metal reflector 6 and the RFID tag 1 and the reading distance L between the RFID tag 1 and the RFID reader 4 are shown. It shows the relationship. Even with the maximum reading distance of 838 mm at this time, the maximum value of the V-shaped metal reflector is about 140%.

すなわち、ＲＦＩＤタグ１とＲＦＩＤリーダ４との読取距離Ｌは、Ｖ字型金属製反射板３の角度ａを１１０度、Ｖ字型金属製反射板３とＲＦＩＤタグ１との距離ｂを４４ｍｍとすることにより従来の方法と比較して最大値を大幅に拡大することが出来る。また、ＲＦＩＤタグ１とＲＦＩＤリーダ４との読取距離Ｌを最大値まで拡大する必要がない場合は、Ｖ字型金属製反射板３とＲＦＩＤタグ１との距離ｂを４４ｍｍより小さく、例えば２０ｍｍに設定し、ホルダの高さを低くする事ができ、コンパクトな専用ホルダを設計できる。   That is, the reading distance L between the RFID tag 1 and the RFID reader 4 is such that the angle a of the V-shaped metal reflector 3 is 110 degrees, and the distance b between the V-shaped metal reflector 3 and the RFID tag 1 is 44 mm. By doing so, the maximum value can be greatly expanded as compared with the conventional method. When there is no need to increase the reading distance L between the RFID tag 1 and the RFID reader 4 to the maximum value, the distance b between the V-shaped metal reflector 3 and the RFID tag 1 is smaller than 44 mm, for example, 20 mm. It can be set and the height of the holder can be lowered, and a compact dedicated holder can be designed.

ここで、専用ホルダの材質としては、セラミックス、硬質ゴム、プラスチック、ポリウレタン、木、紙等非金属が適用される。また、金属製反射板の材質としては、ステンレス、アルミニウム、鉄の金属箔または金属板が適用される。   Here, non-metals such as ceramics, hard rubber, plastic, polyurethane, wood and paper are applied as the material for the dedicated holder. Further, as the material of the metal reflector, a metal foil or a metal plate of stainless steel, aluminum, iron is applied.

専用ホルダは外皮と内部充填物を変えた組合せ構造も適用される。更には内部を空洞とする構造も適用できる。   For the dedicated holder, a combination structure in which the outer skin and the inner filling are changed is also applied. Furthermore, a structure having a hollow inside can also be applied.

本実施例のリーダとＲＦＩＤタグ、Ｖ字型金属製反射板、ホルダ、貼付対象物の鳥瞰図。The bird's-eye view of the reader | leader and RFID tag of a present Example, a V-shaped metal reflector, a holder, and a sticking target object. 図１で示す本実施例で測定した読取距離特性の説明図。FIG. 3 is an explanatory diagram of reading distance characteristics measured in the present embodiment shown in FIG. 1. 図１で示す本実施例で、距離ｂを一定（２０ｍｍと４４ｍｍ）にし角度ａを変化させ測定した読取距離特性の説明図。FIG. 3 is an explanatory diagram of a reading distance characteristic measured in the present embodiment shown in FIG. 従来技術のリーダとＲＦＩＤタグ、平型金属製反射板の鳥瞰図。A bird's-eye view of a conventional reader, RFID tag, and flat metal reflector. 図５で示す実施例で測定した読取距離特性の説明図。FIG. 6 is an explanatory diagram of reading distance characteristics measured in the embodiment shown in FIG. 5.

符号の説明Explanation of symbols

１．ＲＦＩＤタグ
２．ホルダ
３．Ｖ字型金属製反射板
４．ＲＦＩＤリーダ
５．貼付対象物
６．平型金属製反射板 1. RFID tag 2. Holder 3. V-shaped metal reflector 4. RFID reader5. 5. Sticking object Flat metal reflector

Claims (3)

貼付対象物の情報を格納するパッシブタイプＲＦＩＤタグを搭載するとともに、マイクロ波を使い前記ＲＦＩＤタグが格納する貼付対象物の情報を読み取るＲＦＩＤリーダに対するＲＦＩＤタグの背面位置にＶ字型金属製反射板を設置し、
前記Ｖ字型金属製反射板と前記ＲＦＩＤタグとの距離は、１２ｍｍ〜４５ｍｍの間で変更できると共に、
前記Ｖ字型金属製反射板のＶ字角度は、前記Ｖ字型金属製反射板のＶ字角度が９０度〜１７０度の間で、前記Ｖ字型金属製反射板と前記ＲＦＩＤタグとの距離に応じて選択できるようにし、
前記Ｖ字型金属製反射板のＶ字角度の選択をもって、前記Ｖ字型金属製反射板と前記ＲＦＩＤタグとの距離と、前記ＲＦＩＤタグと前記ＲＦＩＤリーダとの読取距離の関係を変更可能としたことを特徴とするＲＦＩＤタグホルダ。 A V-shaped metal reflector is mounted on the back surface of the RFID tag with respect to the RFID reader, which is equipped with a passive type RFID tag for storing information on the object to be attached, and reads information on the object to be attached stored in the RFID tag using microwave It was placed,
The distance between the V-shaped metal reflector and the RFID tag can be changed between 12 mm and 45 mm,
The V-shaped angle of the V-shaped metal reflector is between 90 degrees and 170 degrees when the V-shaped angle of the V-shaped metal reflector is between 90 degrees and 170 degrees. You can select according to the distance,
By selecting the V-shaped angle of the V-shaped metal reflector, the relationship between the distance between the V-shaped metal reflector and the RFID tag and the reading distance between the RFID tag and the RFID reader can be changed. An RFID tag holder characterized by that . 前記ＲＦＩＤタグの、前記マイクロ波の波長が２．４５ＧＨｚである請求項１記載のＲＦＩＤタグホルダ。 The RFID tag holder according to claim 1 , wherein the microwave wavelength of the RFID tag is 2.45 GHz . パッシブタイプＲＦＩＤタグが格納する情報を、マイクロ波を使って読み取るＲＦＩＤリーダに対する前記ＲＦＩＤタグの背面位置に設置されたＶ字型金属製反射板について、About the V-shaped metal reflector installed at the back position of the RFID tag with respect to the RFID reader that reads information stored in the passive type RFID tag using a microwave,
前記Ｖ字型金属製反射板と前記ＲＦＩＤタグとの距離は、１２ｍｍ〜４５ｍｍの間で変更できると共に、  The distance between the V-shaped metal reflector and the RFID tag can be changed between 12 mm and 45 mm,
前記Ｖ字型金属製反射板のＶ字角度は、前記Ｖ字型金属製反射板のＶ字角度が９０度〜１７０度の間で、前記Ｖ字型金属製反射板と前記ＲＦＩＤタグとの距離に応じて変更し、  The V-shaped angle of the V-shaped metal reflector is between 90 degrees and 170 degrees when the V-shaped angle of the V-shaped metal reflector is between 90 degrees and 170 degrees. Change according to the distance,
前記Ｖ字型金属製反射板のＶ字角度の選択をもって、前記Ｖ字型金属製反射板と前記ＲＦＩＤタグとの距離と、前記ＲＦＩＤタグと前記ＲＦＩＤリーダとの読取距離の関係を変更可能として、前記読取距離を制限するＲＦＩＤタグ読取距離制限方法。  By selecting the V-shaped angle of the V-shaped metal reflector, the relationship between the distance between the V-shaped metal reflector and the RFID tag and the reading distance between the RFID tag and the RFID reader can be changed. An RFID tag reading distance limiting method for limiting the reading distance.
JP2006334712A 2006-12-12 2006-12-12 RFID tag holder and RFID tag reading distance limiting method Expired - Fee Related JP4994013B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006334712A JP4994013B2 (en) 2006-12-12 2006-12-12 RFID tag holder and RFID tag reading distance limiting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006334712A JP4994013B2 (en) 2006-12-12 2006-12-12 RFID tag holder and RFID tag reading distance limiting method

Publications (2)

Publication Number Publication Date
JP2008146472A JP2008146472A (en) 2008-06-26
JP4994013B2 true JP4994013B2 (en) 2012-08-08

Family

ID=39606561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006334712A Expired - Fee Related JP4994013B2 (en) 2006-12-12 2006-12-12 RFID tag holder and RFID tag reading distance limiting method

Country Status (1)

Country Link
JP (1) JP4994013B2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003298465A (en) * 2002-03-29 2003-10-17 Sharp Corp Wireless communication system
JP2005128906A (en) * 2003-10-27 2005-05-19 Fujikura Ltd Non-contact ic tag
JPWO2006100742A1 (en) * 2005-03-18 2008-08-28 富士通株式会社 RFID tag

Also Published As

Publication number Publication date
JP2008146472A (en) 2008-06-26

Similar Documents

Publication Publication Date Title
JP4801951B2 (en) RFID tag
KR100973243B1 (en) Rfid tag applicable to metal and rfid tag section of the same
JP4761952B2 (en) RFID tag
JP4667397B2 (en) Communication apparatus and communication method
TW200603481A (en) Radio tag antenna structure for an optical recording medium and a case for an optical recording medium with a radio tag antenna
US20090015381A1 (en) Wireless tag reader/writer antenna
KR20120109063A (en) Rfid tag antenna
JP5076439B2 (en) RFID tag holder
KR20110081488A (en) Radio frequency identification tag
JP4994013B2 (en) RFID tag holder and RFID tag reading distance limiting method
KR20120012152A (en) Metal tag antena
EP1860728A1 (en) Antenna and rfid tag
JP7155751B2 (en) RF tag label
CN111247531B (en) Planar conductive device forming a coil for an RFID tag when folded
JP4702069B2 (en) RFID tag system
JP4814842B2 (en) IC tag unit
JP2005322221A5 (en)
JP4887813B2 (en) RFID information recording medium
CN101354854B (en) Radio frequency identification label fixture and paper roll combination
KR101005311B1 (en) Shelf-shaped rfid system comprising spiral antenna
JP2005165462A (en) Radio tag
JP2007249401A (en) Ic tag issuing system, ic tag printer and ic tag issuing method
CN215729819U (en) Multifunctional RFID high-frequency reader-writer
JP2019192084A (en) RF tag
CN218569230U (en) UHF frequency channel electronic tag antenna and tire electronic tag

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20091209

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120220

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120228

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120412

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120508

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

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120508

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

Free format text: PAYMENT UNTIL: 20150518

Year of fee payment: 3

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

LAPS Cancellation because of no payment of annual fees