JP6954908B2 - 磁気遮断材、その製造方法及びそれを含むデバイス - Google Patents
磁気遮断材、その製造方法及びそれを含むデバイス Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q7/06—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop with core of ferromagnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15333—Amorphous metallic alloys, e.g. glassy metals containing nanocrystallites, e.g. obtained by annealing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/153—Amorphous metallic alloys, e.g. glassy metals
- H01F1/15358—Making agglomerates therefrom, e.g. by pressing
- H01F1/15366—Making agglomerates therefrom, e.g. by pressing using a binder
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
- H01F27/361—Electric or magnetic shields or screens made of combinations of electrically conductive material and ferromagnetic material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/32—Non-reciprocal transmission devices
- H01P1/36—Isolators
- H01P1/365—Resonance absorption isolators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/2291—Supports; Mounting means by structural association with other equipment or articles used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
- H01Q17/008—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems with a particular shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
Description
導電性基板と、
基板に結合させたアンテナと、
基板上に配置され、アンテナに電気的に接続された集積回路と、
アンテナと基板との間に配置された、本開示による磁気遮断材と、
を備える電子デバイスを提供する。
a)導電性軟質磁性材料の層を結合させた基材を準備するステップと、
b)導電性軟質磁性材料の層に間隙を形成して、導電性軟質磁性の複数の島を画定するステップと、
c)導電性軟質磁性の複数の島のうちの少なくともいくつかの上に隣接する導電性軟質磁性の島から自らを電気的に絶縁するのに十分な外側絶縁酸化層を形成するステップと、を含み
間隙は、外部磁界によって導電性軟質磁性材料の層内で誘導される渦電流を少なくとも部分的に抑制する、磁気遮断材を製造する方法を提供する。
第1の実施形態では、本開示は、導電性軟質磁性材料の層を結合させた基材を備え、導電性軟質磁性材料の層は、間隙(例えば、間隙の相互連結した網)によって互いに分離させた、導電性軟質磁性の複数の島を含み、導電性軟質磁性の複数の島のうちの少なくともいくつかは、隣接する導電性軟質磁性の島から自らを電気的に絶縁する外側絶縁酸化層を有し、間隙は、外部磁界によって導電性軟質磁性材料の層内で誘導される電気的な渦電流を少なくとも部分的に抑制する、磁気遮断材を提供する。
基板と、
基板に結合させたアンテナと、
基板上に配置され、アンテナに電気的に接続された集積回路と、
アンテナと基板との間に配置された、第1の実施形態に記載の磁気遮断材と、
を備える電子デバイスを提供する。
a)導電性軟質磁性材料の層を結合させた基材を準備するステップと、
b)導電性軟質磁性材料の層に間隙(例えば、相互連結した網の間隙)を形成して、導電性軟質磁性の複数の島を画定するステップと、
c)導電性軟質磁性の複数の島のうちの少なくともいくつかの上に隣接する導電性軟質磁性の島から自らを電気的に絶縁するのに十分な外側絶縁酸化層を形成するステップと、を含み、
間隙は、外部磁界によって導電性軟質磁性材料の層内で誘導される渦電流を少なくとも部分的に抑制する、磁気遮断材を製造する方法を提供する。
アモルファスVITROPERM800薄帯を、製造元の指示に従って500℃〜550℃でアニールして、アニールしたナノ結晶導電性軟質磁性薄帯の薄帯を準備した。アニールしたVP800薄帯を、粘着性キャリアライナ上に配置し、伸張させながらロールクラッシャに通すことによって割り、粘着性キャリアライナ上に導電性軟質磁性の島の層が配置された細かく割れた薄帯CR1を得た。
硝酸を使用してCR1をエッチングして、導電性軟質磁性の島のうちの少なくともいくつかの上に、隣接する導電性軟質磁性の島から自らを絶縁するのに十分な外側絶縁酸化層を準備した。エタノール溶液中の様々な濃度の硝酸及び異なる処理時間を評価した。指定された必要な時間だけエッチング液にサンプルを浸漬し、洗浄し、次いで60℃のオーブンで2分乾燥させた。結果を以下の表1に示す。
近距離無線通信(NFC)における重要な性能特性は、図3に示すような、遮断材によって金属板から遮蔽され、電力供給されるアンテナと、受動的な応答アンテナとの間の最大読み取り距離である。以下の手順では、3A Logics NFCから入手したNFCリーダキットを使用して、読み取り距離測定を行った。このリーダキットは、ISO/IEC14443AとISO15693との両方のデジタル信号処理プロトコルに準拠し得るように構成されている。ISO/IEC14443Aデジタル信号処理プロトコルは、短い読み取り距離にわたる高速データ伝送速度を特徴とする。
Claims (4)
- 導電性軟質磁性材料の層を結合させた基材を備えた磁気遮断材であって、
導電性軟質磁性材料の前記層は、間隙によって互いに分離された導電性軟質磁性の複数の島を含み、
前記導電性軟質磁性の複数の島のうちの少なくともいくつかは、隣接する導電性軟質磁性の島から自らを電気的に絶縁する外側絶縁酸化層を有し、
前記間隙は空隙であり、外部磁界によって導電性軟質磁性材料の前記層内で誘導される電気的な渦電流を少なくとも部分的に抑制する、磁気遮断材。 - 前記外側絶縁酸化層は、鉄を含有する無機酸化層を含む、請求項1に記載の磁気遮断材。
- 遠隔で生成された磁界と誘導結合するように適合された電子デバイスであって、
基板と、
前記基板に結合させたアンテナと、
前記基板上に配置され、前記アンテナに電気的に接続された集積回路と、
前記アンテナと前記基板との間に配置された、請求項1に記載の磁気遮断材と、
を備える、電子デバイス。 - 磁気遮断材を製造する方法であって、
a)導電性軟質磁性材料の層を結合させた基材を準備するステップと、
b)導電性軟質磁性材料の前記層に間隙を形成して、導電性軟質磁性の複数の島を画定するステップと、
c)前記導電性軟質磁性の複数の島のうちの少なくともいくつかの上に、隣接する導電性軟質磁性の島から自らを電気的に絶縁するのに十分な外側絶縁酸化層を形成するステップと、を含み、
前記間隙は空隙であり、外部磁界によって導電性軟質磁性材料の前記層内で誘導される渦電流を少なくとも部分的に抑制する、磁気遮断材を製造する方法。
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US201562264382P | 2015-12-08 | 2015-12-08 | |
US62/264,382 | 2015-12-08 | ||
PCT/US2016/063241 WO2017099993A1 (en) | 2015-12-08 | 2016-11-22 | Magnetic isolator, method of making the same, and device containing the same |
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JP2018538697A5 JP2018538697A5 (ja) | 2020-01-09 |
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-
2016
- 2016-11-22 EP EP16873582.7A patent/EP3387701A4/en not_active Withdrawn
- 2016-11-22 US US15/780,682 patent/US10734725B2/en active Active
- 2016-11-22 CN CN201680071388.1A patent/CN108370085B/zh not_active Expired - Fee Related
- 2016-11-22 KR KR1020187016088A patent/KR20180082512A/ko not_active Application Discontinuation
- 2016-11-22 JP JP2018529638A patent/JP6954908B2/ja active Active
- 2016-11-22 WO PCT/US2016/063241 patent/WO2017099993A1/en active Application Filing
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2020
- 2020-07-30 US US16/947,378 patent/US20200358192A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
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KR20180082512A (ko) | 2018-07-18 |
EP3387701A1 (en) | 2018-10-17 |
WO2017099993A1 (en) | 2017-06-15 |
US20200358192A1 (en) | 2020-11-12 |
CN108370085A (zh) | 2018-08-03 |
JP2018538697A (ja) | 2018-12-27 |
EP3387701A4 (en) | 2019-06-19 |
US20180375210A1 (en) | 2018-12-27 |
US10734725B2 (en) | 2020-08-04 |
CN108370085B (zh) | 2020-10-20 |
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