JP7447030B2 - Ｕｈｆ帯ｒｆｉｄタグを備える金属容器 - Google Patents
Ｕｈｆ帯ｒｆｉｄタグを備える金属容器 Download PDFInfo
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- JP7447030B2 JP7447030B2 JP2020572666A JP2020572666A JP7447030B2 JP 7447030 B2 JP7447030 B2 JP 7447030B2 JP 2020572666 A JP2020572666 A JP 2020572666A JP 2020572666 A JP2020572666 A JP 2020572666A JP 7447030 B2 JP7447030 B2 JP 7447030B2
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- 229910052751 metal Inorganic materials 0.000 title claims description 9
- 239000002184 metal Substances 0.000 title claims description 9
- 239000000758 substrate Substances 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 235000013361 beverage Nutrition 0.000 claims description 8
- 229920002799 BoPET Polymers 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910052797 bismuth Inorganic materials 0.000 claims description 2
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 229910052709 silver Inorganic materials 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 239000011135 tin Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 101100545272 Caenorhabditis elegans zif-1 gene Proteins 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- H01Q1/2208—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems
- H01Q1/2225—Supports; Mounting means by structural association with other equipment or articles associated with components used in interrogation type services, i.e. in systems for information exchange between an interrogator/reader and a tag/transponder, e.g. in Radio Frequency Identification [RFID] systems used in active tags, i.e. provided with its own power source or in passive tags, i.e. deriving power from RF signal
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- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
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Description
請求項１に記載の前文によれば、本発明は、外被表面壁と、上端と、下端とを備え、下端が円形で凹状の放物線状の底面と円形の周縁とによって形成された空洞を有する、略円筒形の金属容器に関する。
本出願では、以後、ＲＦＩＤ（無線自動識別）タグという用語が頻繁に使用される。ＲＦＩＤタグは少なくとも２つの部分、すなわち、情報を格納および処理し、かつ無線周波数（ＲＦ）信号を変調および復調するＩＣ（集積回路）と、信号を受信および送信するためのアンテナとを備える。タグ情報は不揮発性メモリに格納される。ＲＦＩＤタグは、送信データおよびセンサーデータをそれぞれ処理するための固定ロジックまたはプログラマブルロジックのいずれかを備える。ここでのＲＦＩＤタグは、ＵＨＦ（極超短波）帯ＲＦＩＤタグである。
液体を伴う金属製の円筒形の容器、例えば飲料用アルミニウム缶などに低コストのＵＨＦ帯ＲＦＩＤタグをタグ付けするのは難しいことがよく知られている。これは、金属容器がＲＦ波を反射したり吸収したりするためにタグアンテナの邪魔になるという事実に起因する。
本発明の目的は、上記の課題を解決するＵＨＦ帯ＲＦＩＤタグを備える金属容器を提示することである。
本発明および請求項１に記載の特徴部分によれば、集積回路とアンテナとを備えるＵＨＦ帯ＲＦＩＤタグが下端に配置され、アンテナは、底面がアンテナ放射を反射し、それによりアンテナの読み取り範囲が延長されるように、底面の中心から所定の距離上方に配置される。
以下では、本発明を図１および図２を参照してより詳細に説明する。
図１は、例えばアルミニウム製飲料用缶（例えば、コーラ飲料用缶）など、液体を収容し得る略円筒形の金属容器１を示している。このような飲料用缶は、通常、３３０ｍｌまたは５００ｍｌの容量サイズを有する。容器１は、外被表面壁２と、上端と、下端３とを備える。下端３は、円形で凹状の放物線状の底面４と円形の周縁５とによって形成された空洞を有する。
図１および図２は、集積回路７と、集積回路７に取り付けられたアンテナ８とを備えるＵＨＦ帯ＲＦＩＤタグ６を示している。ＲＦＩＤタグは下端３に配置され、アンテナは、底面がアンテナ放射を反射し、それによりアンテナの読み取り範囲が延長されるように、底面４の中心から所定の距離上方に配置される。
アンテナ８は、平面折り返しダイポールアンテナであり、平面で略円形の形状を有する。
アンテナ８の外径は、容器の周縁５の直径に近い。
アンテナは、底面４の中心から上方に１０～１６ｍｍの範囲、好ましくは１２～１４ｍｍの範囲、最も好ましくは約１３ｍｍに配置される。
ＵＨＦ帯ＲＦＩＤタグ６は、接着剤によって支持層１０上に取り付けられ、支持層は、アンテナ８が周縁５の上端に整列して配置されるように、接着剤によって周縁５の上部に取り付けられる。支持層１０はＰＥＴフィルムであることが好ましいが、当業者は、放物線状の底面４から所定の距離上方にアンテナを配置するのに他の配置または層が可能であり得ること、例えば、ＰＥＴフィルムの代わりに紙を支持層として使用できることを理解している。
アンテナ８の外径は、周縁５の内径と略同じかそれよりも小さい。容器１が飲料用缶である場合、アンテナ８の外径は、約３６～４４ｍｍの範囲にあり、好ましくは約４２ｍｍである。
円形のアンテナ８は、導電層で覆われた薄いキャリア基板で作られることが好ましい。当業者は、異なるキャリア基板、例えば、ポリマー、紙、板、織布、または不織布材料を使用できることを理解している。さらに、当業者は、異なるタイプの導電層、例えば、アルミニウム、銅、銀、スズ、ビスマス、またはこれらの合金の導電層を使用できることを理解している。導電層は、エッチング、ジェット印刷、または導電層を設けるための他の任意の適切な技法によって設けられ得る。
好ましい実施形態では、キャリア基板は、約１０μｍのアルミニウム層で覆われた約５０μｍ厚のＰＥＴ基板である。ＰＥＴ基板の比誘電率は約３であり、誘電正接は０．００２である。
アンテナは、アンテナの外縁の近くに半リング状の間隙９を有し、間隙９においては、キャリア基板が導電層によって覆われていない。間隙は、アンテナ構造の一部であり、アンテナのインピーダンスを集積回路のインピーダンスに整合させるために使用される。
図３は、本発明による、ＵＨＦ帯ＲＦＩＤタグアンテナ８を飲料用缶に配置した場合のアンテナ８の読み取り範囲の試験結果を示している。図からわかるように、アンテナの読み取り範囲は、ＥＴＳＩ準拠ＲＦＩＤ帯域（８６５ＭＨｚ～８６８ＭＨｚ）で約３ｍであり、ＦＣＣ準拠ＲＦＩＤ帯域（９０２ＭＨｚ～９２８ＭＨｚ）で約５ｍである。
本発明の利点は、アンテナ８を放物線状の底面４の上方に配置することにより、アンテナの読み取り範囲が実質的に延長されることである。金属製の底面４のおかげで、アンテナ信号は容器から反射される。特に適切なのは、缶のアルミニウム製の底面がアンテナ信号を反射する飲料用缶に本発明を適用することである。
以上、いくつかの特定の好ましい実施形態に基づいて本発明を説明してきた。しかしながら、添付の特許請求の範囲内で他の実施形態および変形形態が可能であることが理解されよう。例えば、本開示のアンテナは、最良の読み取り範囲を有することが判明しているが、当業者は、他の形状およびタイプのアンテナが可能であり得ることを理解している。例えば、凹状の底部よりも小さいスパイラルアンテナまたはダイポールアンテナが使用されてもよい。
Claims (13)
- 外被表面壁（２）と、上端と、下端（３）とを備え、前記下端が円形で凹状の放物線状の底面（４）と円形の周縁（５）とによって形成された空洞を有する、略円筒形の金属容器（１）において、集積回路（７）とアンテナ（８）とを備えるＵＨＦ帯ＲＦＩＤタグ（６）が前記下端に配置され、前記アンテナ（８）は、前記底面がアンテナ放射を反射し、それにより前記アンテナの読み取り範囲が延長されるように、前記底面（４）の中心から前記底面（４）に垂直な方向に所定の距離離れて配置され、
前記ＲＦＩＤタグが支持層（１０）に取り付けられ、前記支持層（１０）は、前記アンテナ（８）が前記周縁（５）に整列して配置されるように前記周縁（５）上に配置されることを特徴とする、略円筒形の金属容器（１）。 - 前記アンテナが、平面折り返しダイポールアンテナ（８）であり、円形形態を有することを特徴とする、請求項１に記載の容器。
- 前記アンテナの外径が前記容器の前記周縁の直径に近いことを特徴とする、請求項２に記載の容器。
- 前記アンテナが前記底面（４）の前記中心から前記底面（４）に垂直な方向に１０～１６ｍｍの範囲に配置されることを特徴とする、請求項１～３のいずれか一項に記載の容器。
- 前記支持層（１０）がＰＥＴフィルムであることを特徴とする、請求項１に記載の容器。
- 前記アンテナの外径が、３６～４４ｍｍの範囲にあることを特徴とする、請求項２～５のいずれか一項に記載の容器。
- 前記円形のアンテナが、導電層で覆われた薄いキャリア基板で作られることを特徴とする、請求項２～５のいずれか一項に記載の容器。
- 前記キャリア基板が、ポリマー、紙、板、織布、または不織布材料のいずれかであることを特徴とする、請求項７に記載の容器。
- 前記導電層が、アルミニウム、銅、銀、スズ、ビスマス、またはこれらの合金のいずれかであることを特徴とする、請求項７または８に記載の容器。
- 前記キャリア基板が５０μｍ厚のＰＥＴ基板であり、前記導電層が１０μｍのアルミニウム層であることを特徴とする、請求項７に記載の容器。
- 前記アンテナが、前記アンテナの外縁の近くに半リング状の間隙（９）を有し、前記間隙においては、前記キャリア基板が前記導電層によって覆われていないことを特徴とする、請求項７～１０のいずれか一項に記載の容器。
- 前記容器がアルミニウムで作られることを特徴とする、請求項１～１１のいずれか一項に記載の容器。
- 前記容器が飲料用缶であることを特徴とする、請求項１～１２のいずれか一項に記載の容器。
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1850828A SE542229C2 (en) | 2018-07-02 | 2018-07-02 | A metal container comprising a uhf rfid tag |
| SE1850828-3 | 2018-07-02 | ||
| PCT/IB2019/055614 WO2020008342A1 (en) | 2018-07-02 | 2019-07-02 | A metal container comprising a uhf rfid tag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2021529704A JP2021529704A (ja) | 2021-11-04 |
| JP7447030B2 true JP7447030B2 (ja) | 2024-03-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020572666A Active JP7447030B2 (ja) | 2018-07-02 | 2019-07-02 | Ｕｈｆ帯ｒｆｉｄタグを備える金属容器 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US11981481B2 (ja) |
| EP (1) | EP3818590A4 (ja) |
| JP (1) | JP7447030B2 (ja) |
| CN (1) | CN112292784A (ja) |
| RU (1) | RU2768511C1 (ja) |
| SE (1) | SE542229C2 (ja) |
| WO (1) | WO2020008342A1 (ja) |
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Also Published As
| Publication number | Publication date |
|---|---|
| SE1850828A1 (en) | 2020-01-03 |
| US20210269205A1 (en) | 2021-09-02 |
| SE542229C2 (en) | 2020-03-17 |
| CN112292784A (zh) | 2021-01-29 |
| EP3818590A4 (en) | 2022-03-30 |
| RU2768511C1 (ru) | 2022-03-24 |
| JP2021529704A (ja) | 2021-11-04 |
| EP3818590A1 (en) | 2021-05-12 |
| WO2020008342A1 (en) | 2020-01-09 |
| US11981481B2 (en) | 2024-05-14 |
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