JP2019201318A - RF tag structure and RF tag label - Google Patents

RF tag structure and RF tag label Download PDF

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JP2019201318A
JP2019201318A JP2018094563A JP2018094563A JP2019201318A JP 2019201318 A JP2019201318 A JP 2019201318A JP 2018094563 A JP2018094563 A JP 2018094563A JP 2018094563 A JP2018094563 A JP 2018094563A JP 2019201318 A JP2019201318 A JP 2019201318A
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tag label
tag
antenna
dielectric plate
loop
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JP7077760B2 (en
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緒方 哲治
Tetsuji Ogata
哲治 緒方
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Dai Nippon Printing Co Ltd
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Dai Nippon Printing Co Ltd
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Abstract

To provide an RF tag structure configured so as not to significantly deteriorate communication performance of an RF tag label pasted to a dielectric.SOLUTION: An RF tag structure 1 includes: a dielectric plate 12 which is a plate-like member using a material having a high relative dielectric constant; a loop element 110 to which an IC chip 113 is connected; and an RF tag label 10 mounted with an antenna 11 of a structure having a planar coupling element 111 connected to the loop element 110 using a waveguide line 112. In the RF tag label 10, all the loop element 110 and at least a part of the waveguide line 112 protrude from an end of the dielectric plate 12. All the coupling element 111 is pasted to the dielectric plate 12 so as to overlap the dielectric plate 12.SELECTED DRAWING: Figure 1

Description

本発明は,無線による個体識別で用いるRFタグ(Radio Frequency)に関し,更に詳しくは,電子部品を実装するプリント基板(PCB: printed circuit board)など,比誘電率の高い電気物性を有する板状の物に適したRFタグに関する。   The present invention relates to an RF tag (Radio Frequency) used for individual identification by radio, and more specifically, a plate-like material having a high relative dielectric constant such as a printed circuit board (PCB) on which an electronic component is mounted. The present invention relates to an RF tag suitable for an object.

無線による個体識別で用いるRFタグラベルが,RFタグラベルを貼付する貼付面の電気物性に適していないと,RFタグラベルの通信性能が著しく悪化することがある。例えば,金属対応を図っていないRFタグラベルを金属面に貼付すると,金属面に貼付したRFタグラベルの通信性能は著しく悪化する。特許文献1で開示されている発明では,金属対応を図ったRFタグラベルとして,放射素子とマッチング回路からなるアンテナをRFタグラベルに実装し,放射素子が金属面と電気的に導通することで,RFタグラベルを貼付した金属面をRFタグラベルのアンテナの一部として利用できるようにしている。   If the RF tag label used for individual identification by radio is not suitable for the electrical properties of the application surface to which the RF tag label is attached, the communication performance of the RF tag label may be significantly deteriorated. For example, if an RF tag label that does not support metal is attached to a metal surface, the communication performance of the RF tag label attached to the metal surface is significantly deteriorated. In the invention disclosed in Patent Document 1, as an RF tag label that is metal-compatible, an antenna including a radiating element and a matching circuit is mounted on the RF tag label, and the radiating element is electrically connected to a metal surface, so that RF The metal surface to which the tag label is attached can be used as a part of the antenna of the RF tag label.

特開2012−104985号公報JP 2012-104985 A

RFタグラベルを貼付する貼付面の電気物性にRFタグラベルが適していないと,RFタグラベルの通信性能が著しく悪化するケースとして,誘電体の性質を有する貼付面にRFタグラベルを貼付するケースがある。   If the RF tag label is not suitable for the electrical properties of the affixing surface to which the RF tag label is affixed, there is a case where the RF tag label is affixed to the affixing surface having a dielectric property as a case where the communication performance of the RF tag label is remarkably deteriorated.

そこで,本発明は,誘電体に貼り付けたRFタグラベルの通信性能が著しく悪化しないように構成したRFタグ構造体,および,このRFタグ構造体で用いるRFタグラベルを提供することを目的とする。   Therefore, an object of the present invention is to provide an RF tag structure configured so that the communication performance of an RF tag label attached to a dielectric material does not deteriorate significantly, and an RF tag label used in the RF tag structure.

上述した課題を解決する第1発明は,ICチップを接続させたループ状素子と,導波線路を利用して前記ループ状素子と接続している面状の結合素子を有する構造のアンテナを実装したRFタグラベルと,比誘電率の高い材料が用いられた誘電体板を備え,前記ループ状素子の全てと前記導波線路の少なくとも一部が前記誘電体板の端から突設し,前記結合素子の全てが前記誘電体板と重なる状態で,前記RFタグラベルが前記誘電体板に貼られており,前記RFタグラベルに実装する前記アンテナは,縦の長さが表1に従い,横の長さが表2に従い,共振周波数が表3に従うように設計されていることを特徴とするRFタグ構造体である。
A first invention for solving the above-described problem is to mount an antenna having a structure having a loop-shaped element connected to an IC chip and a planar coupling element connected to the loop-shaped element using a waveguide line. An RF tag label and a dielectric plate made of a material having a high relative dielectric constant, wherein all of the loop elements and at least a part of the waveguide line project from the end of the dielectric plate, and the coupling The RF tag label is affixed to the dielectric plate with all of the elements overlapping the dielectric plate, and the antenna mounted on the RF tag label has a vertical length according to Table 1 and a horizontal length. Is an RF tag structure characterized in that the resonance frequency is designed according to Table 2 and the resonance frequency according to Table 3.

更に,第2発明は,ICチップを接続させたループ状素子と,導波線路を利用して前記ループ状素子と接続している面状の結合素子を有する構造のアンテナを実装したインレイと,前記アンテナを実装した前記インレイの面に積層した第1粘着層と,第1粘着層を保護する剥離紙を備え,前記アンテナに実装する前記アンテナは,縦の長さが表4に従い,横の長さが表5に従い,共振周波数が表6に従うように設計されていることを特徴とするRFタグラベルである。
Further, the second invention is an inlay in which an antenna having a structure having a loop-shaped element connected to an IC chip and a planar coupling element connected to the loop-shaped element using a waveguide line, A first adhesive layer laminated on the surface of the inlay on which the antenna is mounted; and a release paper for protecting the first adhesive layer. The antenna mounted on the antenna has a vertical length according to Table 4, The RF tag label is characterized in that the length is designed in accordance with Table 5 and the resonance frequency is in accordance with Table 6.

第1発明に係るRFタグ構造体が備えるRFタグラベル,すなわち,第2発明に係るRFタグラベルは,誘電体の性質を有する貼付面に適した構造にするために,誘電体が有する波長短縮効果を考慮して設計され,第1発明に係るRFタグ構造体においては,RFタグラベルの設計を考慮して,RFタグラベルが誘電体板に貼り付けられている。   The RF tag label included in the RF tag structure according to the first invention, that is, the RF tag label according to the second invention, has a wavelength shortening effect that the dielectric has in order to make the structure suitable for the application surface having the properties of the dielectric. In the RF tag structure according to the first invention, the RF tag label is affixed to the dielectric plate in consideration of the design of the RF tag label.

本実施形態に係るRFタグ構造体を説明する図。The figure explaining the RF tag structure concerning this embodiment. 本実施形態に係るRFタグラベルを説明する図。The figure explaining the RF tag label which concerns on this embodiment. 本実施形態に係るRFタグ構造体の一例を説明する図。The figure explaining an example of the RF tag structure which concerns on this embodiment.

ここから,本発明の好適な実施形態を記載する。なお,以下の記載は本発明の技術的範囲を束縛するものでなく,理解を助けるために記述するものである。   From here, preferred embodiments of the present invention will be described. The following description is not intended to limit the technical scope of the present invention, but is provided to aid understanding.

図1は,本実施形態に係るRFタグ構造体1を説明する図である。図1で図示したように,本実施形態に係るRFタグ構造体1は,比誘電率の高い材料を用いた板状の部材である誘電体板12と,ICチップ113を接続させたループ状素子110と,導波線路112を利用してループ状素子110と接続している面状の結合素子111を有する構造のアンテナ11を実装したRFタグラベル10を備え,RFタグラベル10は,ループ状素子110の全てと導波線路112の少なくとも一部が誘電体板12の端から突設し,結合素子111の全てが誘電体板12と重なる状態で誘電体板12に貼られている。   FIG. 1 is a diagram illustrating an RF tag structure 1 according to this embodiment. As shown in FIG. 1, the RF tag structure 1 according to the present embodiment has a loop shape in which a dielectric plate 12 that is a plate-like member using a material having a high relative dielectric constant and an IC chip 113 are connected. An RF tag label 10 on which an antenna 11 having a structure including an element 110 and a planar coupling element 111 connected to the loop element 110 using the waveguide 112 is mounted. The RF tag label 10 includes a loop element 110 and at least a part of the waveguide line 112 protrude from the end of the dielectric plate 12, and all of the coupling elements 111 are attached to the dielectric plate 12 so as to overlap the dielectric plate 12.

図2は,本実施形態に係るRFタグラベル10を説明する図で,図2(a)は,RFタグラベル10の層構成を説明する図,図2(b)は,RFタグラベル10に実装するアンテナ11を説明する図である。   2A and 2B are diagrams for explaining the RF tag label 10 according to the present embodiment. FIG. 2A is a diagram for explaining the layer structure of the RF tag label 10, and FIG. 2B is an antenna mounted on the RF tag label 10. 11 is a diagram illustrating 11.

RFタグラベル10を使用する周波数帯はUHF帯(860〜960MHz)で,図2(a)で図示したように,RFタグラベル10は,ICチップ113を接続させたアンテナ11を実装したインレイ100と,アンテナ11を実装したインレイ100の面に積層した第1粘着層101と,第1粘着層101を保護する剥離紙102と,アンテナ11を実装したインレイ100の面の裏面に積層した第2粘着層103と,第2粘着層103を利用してインレイ100と接着している表面シート104から少なくとも構成されている。なお,RFタグラベル10は,第2粘着層103と表面シート104を省いた構成にすることもできる。   The frequency band using the RF tag label 10 is a UHF band (860 to 960 MHz). As illustrated in FIG. 2A, the RF tag label 10 includes an inlay 100 on which an antenna 11 to which an IC chip 113 is connected is mounted, The first adhesive layer 101 laminated on the surface of the inlay 100 on which the antenna 11 is mounted, the release paper 102 protecting the first adhesive layer 101, and the second adhesive layer laminated on the back surface of the surface of the inlay 100 on which the antenna 11 is mounted. 103 and the top sheet 104 bonded to the inlay 100 using the second adhesive layer 103. Note that the RF tag label 10 may be configured such that the second adhesive layer 103 and the top sheet 104 are omitted.

RFタグラベル10の材料について説明する。インレイ100のベースフィルムと表面シート104には,ポリエチレンテレフタラート(PET),ポリプロピレン(PP)等の合成樹脂製フィルムに加え,アート紙などを用いることができ,インレイ100に形成するアンテナ11にはアルミ箔などの金属箔を利用できる。また,第1粘着層101および第2粘着層103にはアクリル系やゴム系の粘着剤を利用できる。更に,剥離紙102には,シリコーン系などの剥離剤を塗布した合成樹脂製フィルムや剥離剤を塗布した紙を利用できる。なお,結合素子111に対応する箇所の剥離紙12のみを容易に剥がせるようにするための切り込み102aを剥離紙102に設けている。   The material of the RF tag label 10 will be described. In addition to synthetic resin films such as polyethylene terephthalate (PET) and polypropylene (PP), art paper or the like can be used for the base film and the top sheet 104 of the inlay 100. Metal foil such as aluminum foil can be used. The first adhesive layer 101 and the second adhesive layer 103 can use an acrylic or rubber adhesive. Further, as the release paper 102, a synthetic resin film coated with a silicone-based release agent or paper coated with a release agent can be used. Note that a cut 102a is provided in the release paper 102 so that only the release paper 12 corresponding to the coupling element 111 can be easily peeled off.

図2(b)を参照しながら,RFタグラベル10のインレイ100に実装するアンテナ11の構造について説明する。インレイ100に実装するアンテナ11は,ダイポールアンテナで,ICチップ113を接続させたループ状素子110および結合素子111を有し,導波線路112を介してループ状素子110が結合素子111と接続している構造になっている。   The structure of the antenna 11 mounted on the inlay 100 of the RF tag label 10 will be described with reference to FIG. The antenna 11 mounted on the inlay 100 is a dipole antenna, and includes a loop element 110 and a coupling element 111 to which an IC chip 113 is connected. The loop element 110 is connected to the coupling element 111 via a waveguide line 112. It has a structure.

アンテナ11を構成するループ状素子110は,インレイ100に実装するICチップ113とのインピーダンス整合をとるためのアンテナ素子である。ICチップ113の入力端子間には容量性リアクタンス(キャパシタンス)が存在するので,ICチップ113と接続するループ状素子110の形状をループ形状にし,ICチップ113の入力端子間に存在する容量性リアクタンスに対応した誘導性リアクタンス(インダクタンス)をループ状素子110に持たせている。   The loop element 110 constituting the antenna 11 is an antenna element for impedance matching with the IC chip 113 mounted on the inlay 100. Since there is a capacitive reactance (capacitance) between the input terminals of the IC chip 113, the shape of the loop element 110 connected to the IC chip 113 is made into a loop shape, and the capacitive reactance existing between the input terminals of the IC chip 113. The loop-shaped element 110 has inductive reactance (inductance) corresponding to the above.

アンテナ11を構成する結合素子111は,RFタグラベル10を貼付した誘電体板12と電気的に結合し易いように,プレート電極のような板状の導体で構成されている。結合素子111が誘電体と重なるように,RFタグラベル10を誘電体に貼り付けると,誘電体に放射された電波は,誘電体を伝播し,結合素子111を介してRFタグラベル10に伝播され,RFタグラベルが放射する電波は,その逆の経路で誘電体板12に伝播される。   The coupling element 111 constituting the antenna 11 is composed of a plate-like conductor such as a plate electrode so that it can easily be electrically coupled to the dielectric plate 12 to which the RF tag label 10 is attached. When the RF tag label 10 is attached to the dielectric so that the coupling element 111 overlaps the dielectric, the radio wave radiated to the dielectric propagates through the dielectric and is propagated to the RF tag label 10 via the coupling element 111. The radio wave radiated from the RF tag label is propagated to the dielectric plate 12 through the reverse path.

図1で図示したように,ループ状素子110の全てと導波線路112の少なくとも一部が誘電体板12から突設し,結合素子111の全てが誘電体板12と重なる状態でRFタグラベル10を誘電体板12に貼ると,結合素子111は,誘電体板12と電気的に結合する。誘電体板12を伝搬する電波の波長は,誘電体板12が有する波長短縮効果により元の波長よりも短くなるので,RFタグラベル10に実装するアンテナ11は、縦の長さが表7に従うように設計されている。   As shown in FIG. 1, all of the loop elements 110 and at least a part of the waveguide line 112 protrude from the dielectric plate 12, and all of the coupling elements 111 overlap the dielectric plate 12. Is attached to the dielectric plate 12, the coupling element 111 is electrically coupled to the dielectric plate 12. Since the wavelength of the radio wave propagating through the dielectric plate 12 is shorter than the original wavelength due to the wavelength shortening effect of the dielectric plate 12, the antenna 11 mounted on the RF tag label 10 has a vertical length according to Table 7. Designed to.

更に,RFタグラベル10を誘電体板12に貼付すると,誘電体板12の影響で大きな寄生容量がRFタグラベル10に発生し,RFタグラベル10の共振周波数が低い方向にシフトしてしまう。RFタグラベル10の共振周波数を容易に変更可能とするために,線状の導線をジグザグ状に折り曲げたアンテナ素子をループ状素子と接続させることも考えられるが,誘電体板12から突出する長さが長くなるため,本実施形態では,線状の導線をジグザグ状に折り曲げたアンテナ素子をあえてRFタグラベル10に設けていない。   Further, when the RF tag label 10 is attached to the dielectric plate 12, a large parasitic capacitance is generated in the RF tag label 10 due to the influence of the dielectric plate 12, and the resonance frequency of the RF tag label 10 is shifted in a lower direction. In order to easily change the resonance frequency of the RF tag label 10, it is conceivable to connect an antenna element in which a linear conductor is bent in a zigzag manner to a loop element, but the length protruding from the dielectric plate 12 Therefore, in this embodiment, the RF tag label 10 is not provided with an antenna element obtained by bending a linear conducting wire in a zigzag shape.

線状の導線をジグザグ状に折り曲げたアンテナ素子を設けていない本実施形態に係るRFタグラベル10では,RFタグラベル10の横の長さで,RFタグラベル10の共振周波数を調整できるので,RFタグラベル10に実装するアンテナ11は、横の長さが表8に従い、共振周波数が表9に従うように設計されている。   In the RF tag label 10 according to the present embodiment in which the antenna element obtained by bending the linear conducting wire in a zigzag shape is not provided, the resonance frequency of the RF tag label 10 can be adjusted by the horizontal length of the RF tag label 10. The antenna 11 to be mounted on is designed so that the horizontal length follows Table 8 and the resonance frequency follows Table 9.

本実施形態に係るRFタグ構造体1の一例について説明する。本実施形態に係るRFタグ構造体1が備える誘電体板12は,誘電体の性質を有する様々な部材に置き換えることができる。   An example of the RF tag structure 1 according to the present embodiment will be described. The dielectric plate 12 included in the RF tag structure 1 according to the present embodiment can be replaced with various members having dielectric properties.

図3は,本実施形態に係るRFタグ構造体1の一例を説明する図である。図3で図示したRFタグ構造体1では,本実施形態に係るRFタグ構造体1が備える誘電体板12を,電子部品を実装するPCB12a(Printed Circuit Board)に置き換えている。図3では,ループ状素子110の全てと導波線路112の一部がPCB12aから突設し,結合素子111の全てがPCB12aと重なるように,誘電体を基材に用いたPCB12aの一辺にRFタグラベル10を貼り付けている。なお,これ以外の例としては,本実施形態に係るRFタグ構造体1が備える誘電体板12をガラス板に置き換える例が考えられる。   FIG. 3 is a diagram illustrating an example of the RF tag structure 1 according to the present embodiment. In the RF tag structure 1 illustrated in FIG. 3, the dielectric plate 12 included in the RF tag structure 1 according to the present embodiment is replaced with a PCB 12a (Printed Circuit Board) on which electronic components are mounted. In FIG. 3, all of the loop-shaped element 110 and a part of the waveguide line 112 protrude from the PCB 12a, and the coupling element 111 overlaps with the PCB 12a. A tag label 10 is attached. As another example, an example in which the dielectric plate 12 included in the RF tag structure 1 according to the present embodiment is replaced with a glass plate can be considered.

1 RFタグ構造体
10 RFタグラベル
100 インレイ
101 第1粘着層
102 剥離紙
103 第2粘着層
104 表面シート
11 アンテナ
110 ループ状素子
111 結合素子
112 導波線路
113 ICチップ
12 誘電体板
12a PCB
DESCRIPTION OF SYMBOLS 1 RF tag structure 10 RF tag label 100 Inlay 101 1st adhesion layer 102 Release paper 103 2nd adhesion layer 104 Top sheet 11 Antenna 110 Loop element 111 Coupling element 112 Waveguide line 113 IC chip 12 Dielectric board 12a PCB

Claims (2)

ICチップを接続させたループ状素子と,導波線路を利用して前記ループ状素子と接続している面状の結合素子を有する構造のアンテナを実装したRFタグラベルと,比誘電率の高い材料が用いられた誘電体板を備え,
前記ループ状素子の全てと前記導波線路の少なくとも一部が前記誘電体板の端から突設し,前記結合素子の全てが前記誘電体板と重なる状態で,前記RFタグラベルが前記誘電体板に貼られており,
前記RFタグラベルに実装する前記アンテナは,縦の長さが表1に従い,横の長さが表2に従い,共振周波数が表3に従うように設計されている,
ことを特徴とするRFタグ構造体。

An RF tag label on which an antenna having a structure having a loop-like element connected to an IC chip, and a planar coupling element connected to the loop-like element using a waveguide line, and a material having a high relative dielectric constant Is provided with a dielectric plate
The RF tag label is connected to the dielectric plate in a state where all of the loop-shaped elements and at least a part of the waveguide line protrude from the end of the dielectric plate, and all of the coupling elements overlap the dielectric plate. Is attached to
The antenna mounted on the RF tag label is designed so that the vertical length is in accordance with Table 1, the horizontal length is in accordance with Table 2, and the resonance frequency is in accordance with Table 3.
The RF tag structure characterized by the above-mentioned.

ICチップを接続させたループ状素子と,導波線路を利用して前記ループ状素子と接続している面状の結合素子を有する構造のアンテナを実装したインレイと,前記アンテナを実装した前記インレイの面に積層した第1粘着層と,第1粘着層を保護する剥離紙を備え,
前記アンテナに実装する前記アンテナは,縦の長さが表4に従い,横の長さが表5に従い,共振周波数が表6に従うように設計されている,
ことを特徴とするRFタグラベル。

An inlay in which an antenna having a structure having a loop-shaped element connected to an IC chip, and a planar coupling element connected to the loop-shaped element using a waveguide line, and the inlay in which the antenna is mounted A first adhesive layer laminated on the surface, and a release paper for protecting the first adhesive layer,
The antenna mounted on the antenna is designed so that the vertical length is according to Table 4, the horizontal length is according to Table 5, and the resonance frequency is according to Table 6.
An RF tag label characterized by the above.

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