WO2017126147A1 - ループアンテナアレイ - Google Patents
ループアンテナアレイ Download PDFInfo
- Publication number
- WO2017126147A1 WO2017126147A1 PCT/JP2016/074518 JP2016074518W WO2017126147A1 WO 2017126147 A1 WO2017126147 A1 WO 2017126147A1 JP 2016074518 W JP2016074518 W JP 2016074518W WO 2017126147 A1 WO2017126147 A1 WO 2017126147A1
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- WIPO (PCT)
- Prior art keywords
- loop antenna
- loop
- antenna array
- antennas
- loop antennas
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Classifications
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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
- H01Q7/04—Screened antennas
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/06—Arrays of individually energised antenna units similarly polarised and spaced apart
- H01Q21/08—Arrays of individually energised antenna units similarly polarised and spaced apart the units being spaced along or adjacent to a rectilinear path
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
- H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
Definitions
- the present invention relates to a loop antenna array capable of forming a linear and clear communication area boundary.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide a loop antenna array capable of forming a linear and clear boundary of a communication area.
- the loop antenna array of the present invention includes two loop antennas in which currents in opposite directions flow.
- loop antenna array of the present invention since two loop antennas in which currents in opposite directions flow are provided, a linear and clear communication area boundary can be formed.
- the loop antenna array of the present embodiment is a magnetic field antenna.
- a low-frequency (approximately 10 MHz or less) magnetic field has a feature that the interaction with the human body and the surrounding environment is significantly lower than the electric field. Therefore, it is conceivable to use a low-frequency magnetic field as a communication medium as one means for solving the problem. If a “sharp magnetic field distribution” in which the magnetic field intensity rapidly attenuates at the boundary of the communication area can be created, a highly reliable area limited wireless system can be constructed.
- the attenuation factor of the magnetic field is 60 dB / dec and the magnetic field to be formed is shown in FIG.
- the shape of the area becomes a curved surface. For this reason, it is difficult to form a straight and clear boundary of the communication area.
- FIG. 1 is a diagram illustrating an example of a loop antenna array according to the first embodiment.
- FIG. 2 is a diagram showing a magnetic field area formed by the loop antenna array of FIG.
- the loop antenna array includes two loop antennas 1 and 2.
- Each of the loop antennas 1 and 2 has a conductor formed in a loop shape, and is formed, for example, on a substrate (not shown) (same plane).
- the loop antennas 1 and 2 have, for example, the same shape (circle), the area of the area surrounded by the loop antennas is the same, and the number of turns is one.
- the loop antennas 1 and 2 are formed by, for example, a continuous conducting wire LN.
- the + terminal which is one end of the conducting wire LN is connected to the signal terminal of the AC power supply E, and the ⁇ terminal which is the other end of the conducting wire LN is connected to the GND terminal of the AC power supply E.
- the loop antennas 1 and 2 are provided with a + terminal and a ⁇ terminal, that is, not formed by continuous conductors, and the + terminal of the loop antenna 1 and the ⁇ terminal of the loop antenna 2 are connected to the signal terminal of the AC power source E.
- the minus terminal of the loop antenna 1 and the plus terminal of the loop antenna 2 may flow.
- each of the loop antennas 1 and 2 is provided with a + terminal and a ⁇ terminal, and two AC power supplies are provided.
- the + terminal and the ⁇ terminal of the loop antenna 1 are connected to the signal terminal and the GND terminal of one AC power supply, respectively.
- the + terminal and the ⁇ terminal of the loop antenna 2 By connecting the + terminal and the ⁇ terminal of the loop antenna 2 to the signal terminal and the GND terminal of the other AC power supply, respectively, currents in opposite directions may flow.
- the signal terminal of one AC power supply is a positive voltage
- the signal terminal of the other AC power supply may be synchronized so as to be a negative voltage.
- the boundary of the communication area can be flattened compared to the case of a single loop antenna (FIG. 9).
- the direction penetrating the loop antenna from the midpoint PL of the center line segment L connecting the center 1c of the loop antenna 1 and the center 2c of the loop antenna 2 (z direction) It is preferable that (d / 2) ⁇ a, where a (the minimum distance from the midpoint PL to the communication area boundary) is a distance to the communication area boundary that is far away. That is, it is desirable to set the distance between the antennas so as to satisfy d ⁇ 2a.
- the contour line of the magnetic field intensity passing through the point Pa ′ separated from the middle point PL by a predetermined distance d / 2 ( ⁇ a) in the z direction does not intersect the center-to-center straight line segment L. Therefore, by setting d ⁇ 2a, the condition that the contour line of the magnetic field strength passing through the point Pa farther from the midpoint PL than the point Pa ′ can be satisfied without crossing the straight line segment L between the centers.
- the contour line of the magnetic field intensity passing through the point Pa has a portion substantially parallel to the straight line segment L between the centers. That is, the contour lines of the parallel magnetic field strength can be used as a linear and clear boundary of the communication area.
- the amplitude of the magnetic field generated far away by the loop antenna is proportional to the magnitude of the magnetic dipole moment vector m.
- m is given by the following equation.
- I is the current value flowing through the loop antenna
- S is the area of the area surrounded by the loop antenna
- direction of m (vector) is the direction of the right screw with respect to the current rotation direction It is.
- a current flows in the opposite direction.
- the sum of m considering the direction becomes zero.
- the loop antenna array according to the first embodiment can be regarded as a quadrupole obtained by arranging loop antennas having one turn (with an attenuation factor of 60 dB / dec) in the reverse direction.
- the attenuation factor of the magnetic field is 80 dB / dec.
- the first embodiment it is possible to form a magnetic field area (communication area) that is sharper than a loop antenna having one winding.
- the shape of the magnetic field area does not depend on the shape of the loop antenna, and thus the shape is not circular, but may be square, rectangular, elliptical, fan-shaped, triangular, semicircular, helical, or string-wound. However, the shape is not limited to these. The shape may be any shape as long as a magnetic dipole moment vector is formed when a current is passed.
- the number of turns is not limited to one. Further, the N ⁇ S1 ⁇ 2 (number of turns ⁇ area) of the loop antennas 1 and 2 may be made equal and the shapes may be different.
- FIG. 3 is a diagram illustrating an example of a loop antenna array according to the second embodiment.
- FIG. 4 is a diagram showing a magnetic field area formed by the loop antenna array of FIG.
- the loop antenna array of the second embodiment includes a plurality (two) of loop antenna arrays (FIG. 1) of the first embodiment. That is, two loop antennas 1 and 2 are provided. All the loop antennas are arranged on the same plane. For convenience, one loop antenna 1 is called a loop antenna 3, and one loop antenna 2 is called a loop antenna 4.
- the centers of all loop antennas 1 to 4 are arranged on the same straight line LL.
- the loop antennas 1 and 2 constitute one unit loop antenna array A
- the loop antenna 3 4 constitutes another unit loop antenna array B.
- the directions of currents flowing through the loop antenna 3 located on the left side of the drawing are opposite to each other.
- the loop antenna array of the second embodiment includes a plurality of the loop antenna arrays of the first embodiment, and preferably, each loop antenna array has d ⁇ 2a (see FIG. 2).
- the contour line of the magnetic field strength separated from the straight line LL by the distance a has a portion substantially parallel to the same straight line LL. That is, the contour lines of the parallel magnetic field strength can be used as a linear and clear boundary of the communication area.
- the current direction is as described above, for example, if the shape, area, and number of turns of each of the loop antennas 1 to 4 are the same, the sum of m considering the direction becomes zero. .
- the loop antenna array of the second embodiment can be regarded as an octupole obtained by arranging the quadrupoles in the opposite direction, and the attenuation factor of the magnetic field is 100 dB / dec. Become.
- a sharper magnetic field area (communication area) can be formed than in the first embodiment.
- the shape of the loop antenna is not limited to a circle. It may be different for each loop antenna and for each unit loop antenna array. The number of turns is not limited to one.
- the loop antennas 1 and 2 do not have to be formed of continuous conducting wires.
- the loop antennas 2 and 3 may be formed with continuous conducting wires. That is, even if it is a different loop antenna array, the group of adjacent loop antennas may be formed with continuous conducting wires.
- the loop antennas 1 to 4 may be formed of continuous conductive wires.
- FIG. 6 is a diagram illustrating an example of a loop antenna array according to the third embodiment.
- the loop antenna array of the third embodiment includes a plurality (four) of the loop antenna array (FIG. 1) of the first embodiment. That is, four loop antennas 1 and 2 are provided. All the loop antennas are arranged on the same plane.
- the loop antennas 1 other than one loop antenna 1 are referred to as loop antennas 3, 5, and 7, and the loop antennas 2 other than one loop antenna 2 are referred to as loop antennas 4, 6, and 8.
- the centers of all loop antennas 1 to 4 are arranged on the same straight line (not shown).
- the loop antennas 1 to 4 constitute one unit loop antenna array AB
- the loop antenna 5 8 constitute another unit loop antenna array CD.
- the direction of current flowing in the loop antenna 1 located on one end side (for example, the left side of the drawing) of the same straight line LL and the one end side (for example, in the other unit loop antenna array CD, for example) are opposite to each other.
- the loop antenna array according to the third embodiment includes a plurality of the loop antenna arrays according to the first embodiment.
- each loop antenna array satisfies d / 2 ⁇ a (d ⁇ 2a) ( Therefore, the contour lines of the magnetic field strength separated by the distance a from the same straight line passing through the center of each loop antenna have a portion substantially parallel to the same straight line. That is, the contour lines of the parallel magnetic field strength can be used as a linear and clear boundary of the communication area.
- the direction of current is as described above, for example, if the shape, area, and number of turns of each of the loop antennas 1 to 8 are the same, the sum of m considering the direction becomes zero. .
- the loop antenna array of the third embodiment can be regarded as a 16-pole element obtained by arranging octupoles in the opposite direction, and the attenuation factor of the magnetic field is 120 dB / dec. Become.
- a sharper magnetic field area (communication area) than that of the second embodiment can be formed.
- the shape of the loop antenna is not limited to a circle. It may be different for each loop antenna and for each unit loop antenna array. The number of turns is not limited to one. Further, each set of loop antennas 2 and 3, loop antennas 4 and 5, and loop antennas 6 and 7 may be formed of continuous conductors. That is, even if it is a different loop antenna array, the group of adjacent loop antennas may be formed with continuous conducting wires. Further, the loop antennas 1 to 8 may be formed of continuous conducting wires.
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- Variable-Direction Aerials And Aerial Arrays (AREA)
- Near-Field Transmission Systems (AREA)
Abstract
Description
図1は、第1の実施の形態のループアンテナアレイの一例を示す図である。図2は、図1のループアンテナアレイが形成する磁界エリアを示す図である。
Nはループアンテナの巻数、Iはループアンテナを流れる電流値で、Sはループアンテナに囲まれたエリアの面積であり、m(ベクトル)の方向は、電流の回転方向に対して右ネジの方向である。
図3は、第2の実施の形態のループアンテナアレイの一例を示す図である。図4は、図3のループアンテナアレイが形成する磁界エリアを示す図である。
図6は、第3の実施の形態のループアンテナアレイの一例を示す図である。
A、B、AB、CD 単位ループアンテナアレイ
Claims (9)
- 互いに逆方向の電流が流れる2つのループアンテナを備えることを特徴とするループアンテナアレイ。
- 請求項1記載のループアンテナアレイを複数備え、かつ、前記ループアンテナの総数が2のn乗(nは2以上の整数)であり、かつ、全ての前記ループアンテナの中心が同一直線分上に配置され、かつ、2の(n-1)乗個の前記ループアンテナのまとまりを単位ループアンテナアレイとした場合、一方の単位ループアンテナアレイにおいて前記同一直線分の一方端側に位置するループアンテナに流れる電流の方向と他方の単位ループアンテナアレイにおいて前記一方端側に位置するループアンテナに流れる電流の方向とが互いに逆であることを特徴とするループアンテナアレイ。
- 全ての前記ループアンテナが同一平面上に配置されていることを特徴とする請求項1または2記載のループアンテナアレイ。
- 全ての前記ループアンテナの磁気モーメントの総和がゼロであることを特徴とする請求項1ないし3のいずれかに記載のループアンテナアレイ。
- 前記各ループアンテナアレイの形状が正方形、円形、長方形、楕円形、扇形、三角形、半円形、螺旋形、弦巻線形のいずれかであることを特徴とする請求項1ないし4のいずれかに記載のループアンテナアレイ。
- 全ての前記ループアンテナアレイの形状が同一であることを特徴とする請求項1ないし5のいずれかに記載のループアンテナアレイ。
- 隣り合う2つの前記ループアンテナからなる少なくとも1組のループアンテナにおいて、一方のループアンテナと他方のループアンテナが連続した導線で形成されていることを特徴とする請求項1ないし6のいずれかに記載のループアンテナアレイ。
- 全ての前記ループアンテナが連続した導線で形成されていることを特徴とする請求項1ないし6のいずれかに記載のループアンテナアレイ。
- 請求項1ないし8のいずれかに記載のループアンテナアレイであって、
前記2つのループアンテナの中心間の直線距離は、前記中心間の中点からループアンテナを貫通する方向に離れた通信エリア境界までの距離の2倍未満であることを特徴とするループアンテナアレイ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/764,964 US10340598B2 (en) | 2016-01-22 | 2016-08-23 | Loop antenna array |
EP16886387.6A EP3346553B1 (en) | 2016-01-22 | 2016-08-23 | Loop antenna array |
KR1020187009407A KR101919397B1 (ko) | 2016-01-22 | 2016-08-23 | 루프 안테나 어레이 |
CN201680058447.1A CN108140949B (zh) | 2016-01-22 | 2016-08-23 | 环状天线阵列组 |
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JP2016-010749 | 2016-01-22 | ||
JP2016010749A JP6069548B1 (ja) | 2016-01-22 | 2016-01-22 | ループアンテナアレイ群 |
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WO2017126147A1 true WO2017126147A1 (ja) | 2017-07-27 |
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PCT/JP2016/074518 WO2017126147A1 (ja) | 2016-01-22 | 2016-08-23 | ループアンテナアレイ |
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US (1) | US10340598B2 (ja) |
EP (1) | EP3346553B1 (ja) |
JP (1) | JP6069548B1 (ja) |
KR (1) | KR101919397B1 (ja) |
CN (1) | CN108140949B (ja) |
WO (1) | WO2017126147A1 (ja) |
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Publication number | Priority date | Publication date | Assignee | Title |
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JP6263662B1 (ja) * | 2017-06-19 | 2018-01-17 | 日本電信電話株式会社 | アンテナ回路 |
US11158946B2 (en) | 2017-08-24 | 2021-10-26 | Nippon Telegraph And Telephone Corporation | Dual loop antenna |
USD892091S1 (en) | 2018-09-21 | 2020-08-04 | Smartstripe, Llc | Staggered hollowed disk antenna sheet |
TWI749987B (zh) * | 2021-01-05 | 2021-12-11 | 友達光電股份有限公司 | 天線結構及陣列天線模組 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004328722A (ja) * | 2003-04-07 | 2004-11-18 | Omron Corp | アンテナ装置 |
JP2005102185A (ja) * | 2003-08-29 | 2005-04-14 | Seiko Epson Corp | ループアンテナ装置 |
JP2007174570A (ja) | 2005-12-26 | 2007-07-05 | Nippon Telegr & Teleph Corp <Ntt> | 電極対および通信システム |
JP2013125998A (ja) * | 2011-12-13 | 2013-06-24 | Nippon Telegr & Teleph Corp <Ntt> | ループアンテナ |
JP2014116887A (ja) * | 2012-12-12 | 2014-06-26 | Nippon Telegr & Teleph Corp <Ntt> | 近傍磁界アンテナ |
JP2015508987A (ja) * | 2012-01-26 | 2015-03-23 | ワイトリシティ コーポレーションWitricity Corporation | 減少した場を有する無線エネルギー伝送 |
Family Cites Families (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2235163A (en) * | 1938-12-15 | 1941-03-18 | Rca Corp | Broad band antenna |
US4260990A (en) * | 1979-11-08 | 1981-04-07 | Lichtblau G J | Asymmetrical antennas for use in electronic security systems |
US4751516A (en) * | 1985-01-10 | 1988-06-14 | Lichtblau G J | Antenna system for magnetic and resonant circuit detection |
US4866455A (en) * | 1985-01-10 | 1989-09-12 | Lichtblau G J | Antenna system for magnetic and resonant circuit detection |
US5218371A (en) | 1990-08-14 | 1993-06-08 | Sensormatic Electronics Corporation | Antenna array for enhanced field falloff |
US5694139A (en) * | 1994-06-28 | 1997-12-02 | Sony Corporation | Short-distance communication antenna and methods of manufacturing and using the short-distance communication antenna |
JP3528367B2 (ja) * | 1995-09-30 | 2004-05-17 | ソニーケミカル株式会社 | リーダ・ライタ用アンテナ |
JPH10209737A (ja) | 1996-11-22 | 1998-08-07 | Teruya:Kk | ループアンテナおよび認証装置 |
US5914692A (en) | 1997-01-14 | 1999-06-22 | Checkpoint Systems, Inc. | Multiple loop antenna with crossover element having a pair of spaced, parallel conductors for electrically connecting the multiple loops |
US6570541B2 (en) * | 1998-05-18 | 2003-05-27 | Db Tag, Inc. | Systems and methods for wirelessly projecting power using multiple in-phase current loops |
US6388628B1 (en) * | 1998-05-18 | 2002-05-14 | Db Tag, Inc. | Systems and methods for wirelessly projecting power using in-phase current loops |
US6960984B1 (en) * | 1999-12-08 | 2005-11-01 | University Of North Carolina | Methods and systems for reactively compensating magnetic current loops |
DE60038218T2 (de) * | 2000-02-21 | 2009-02-26 | Naamloze Vennootschap Nederlandsche Apparatenfabriek Nedap | Antennenkonfiguration eines elektromagnetischen Detektierungssystems und ein derartiges System mit einer solchen Antennenkonfiguration |
CA2314449A1 (en) * | 2000-07-25 | 2002-01-25 | Superpass Company Inc. | High gain printed loop antennas |
JP3498716B2 (ja) * | 2001-02-09 | 2004-02-16 | オムロン株式会社 | アンテナ装置 |
JP3587185B2 (ja) * | 2001-09-28 | 2004-11-10 | オムロン株式会社 | 誘導無線アンテナ、およびこれを用いた非接触データ通信装置 |
AU2003283644A1 (en) * | 2002-12-04 | 2004-06-23 | Koninklijke Philips Electronics N.V. | Method for improving the perceived resolution of a colour matrix display |
CN100583554C (zh) * | 2003-08-29 | 2010-01-20 | 精工爱普生株式会社 | 环形天线装置 |
US7417599B2 (en) * | 2004-02-20 | 2008-08-26 | 3M Innovative Properties Company | Multi-loop antenna for radio frequency identification (RFID) communication |
JP2006173415A (ja) * | 2004-12-16 | 2006-06-29 | Keio Gijuku | 電子回路 |
JP2007028472A (ja) | 2005-07-21 | 2007-02-01 | Matsushita Electric Ind Co Ltd | アンテナ装置 |
WO2007058619A1 (en) | 2005-11-19 | 2007-05-24 | Agency For Science, Technology And Research | Antenna for radio frequency identification system |
US7603837B2 (en) * | 2006-01-13 | 2009-10-20 | Cnh America Llc | Header height control system and apparatus |
GB0724704D0 (en) * | 2007-12-19 | 2008-01-30 | Rhodes Mark | Antenna formed of multiple planar arrayed loops |
US7714791B2 (en) * | 2008-07-02 | 2010-05-11 | Raytheon Company | Antenna with improved illumination efficiency |
JP5307241B2 (ja) * | 2009-06-16 | 2013-10-02 | 株式会社ビー・アンド・プラス | 双方向伝送用コイルおよびこれを用いた双方向伝送装置 |
JP5484843B2 (ja) * | 2009-09-24 | 2014-05-07 | パナソニック株式会社 | 非接触充電システム |
US8772976B2 (en) * | 2011-03-30 | 2014-07-08 | Intel Corporation | Reconfigurable coil techniques |
KR101880258B1 (ko) * | 2011-09-09 | 2018-07-19 | 위트리시티 코포레이션 | 무선 에너지 전송 시스템에서의 이물질 검출 |
US20150090789A1 (en) * | 2012-01-05 | 2015-04-02 | Hid Global Gmbh | Calculated compensated magnetic antennas for different frequencies |
EP2828951B1 (en) * | 2012-03-20 | 2020-05-27 | Auckland UniServices Limited | Winding arrangements in wireless power transfer systems |
ITTO20120477A1 (it) * | 2012-05-31 | 2013-12-01 | St Microelectronics Srl | Rete di dispositivi elettronici fissati ad un supporto flessibile e relativo metodo di comunicazione |
KR102034718B1 (ko) * | 2012-07-06 | 2019-10-22 | 삼성전자주식회사 | 리튬공지전지용 음극 및 이를 포함하는 리튬공기전지 |
CN109995149A (zh) * | 2012-10-19 | 2019-07-09 | 韦特里西提公司 | 无线能量传输系统中的外来物检测 |
KR101542525B1 (ko) * | 2013-02-14 | 2015-08-06 | 주식회사 아모텍 | 무선통신 안테나 모듈 및 이를 구비하는 휴대 단말 |
JP6030991B2 (ja) | 2013-04-17 | 2016-11-24 | 日本電信電話株式会社 | 逆相二重ループアンテナ |
JP2015070587A (ja) * | 2013-10-01 | 2015-04-13 | セイコーエプソン株式会社 | アンテナ及び電子装置 |
EP3061176B1 (en) * | 2013-10-24 | 2020-11-11 | Harald Merkel | Method and arrangement for wireless energy transfer |
US9450303B2 (en) * | 2013-11-18 | 2016-09-20 | Inpaq Technology Co., Ltd. | Antenna structure |
US9276616B2 (en) * | 2014-01-10 | 2016-03-01 | Qualcomm Technologies International, Ltd. | Integrated circuit chip inductor configuration |
DE102014003409A1 (de) * | 2014-03-13 | 2015-09-17 | Checkpoint Systems, Inc. | RFID-Lesegerät und Antennenvorrichtung |
JP6369623B2 (ja) * | 2015-02-24 | 2018-08-08 | 株式会社村田製作所 | アンテナ装置およびrfidシステム |
JP6392715B2 (ja) * | 2015-08-17 | 2018-09-19 | 日本電信電話株式会社 | ループアンテナアレイ群 |
JP6059837B1 (ja) * | 2016-03-22 | 2017-01-11 | 日本電信電話株式会社 | アンテナ制御装置、アンテナ制御プログラムおよびアンテナ制御システム |
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2016
- 2016-01-22 JP JP2016010749A patent/JP6069548B1/ja active Active
- 2016-08-23 EP EP16886387.6A patent/EP3346553B1/en active Active
- 2016-08-23 CN CN201680058447.1A patent/CN108140949B/zh active Active
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2004328722A (ja) * | 2003-04-07 | 2004-11-18 | Omron Corp | アンテナ装置 |
JP2005102185A (ja) * | 2003-08-29 | 2005-04-14 | Seiko Epson Corp | ループアンテナ装置 |
JP2007174570A (ja) | 2005-12-26 | 2007-07-05 | Nippon Telegr & Teleph Corp <Ntt> | 電極対および通信システム |
JP2013125998A (ja) * | 2011-12-13 | 2013-06-24 | Nippon Telegr & Teleph Corp <Ntt> | ループアンテナ |
JP2015508987A (ja) * | 2012-01-26 | 2015-03-23 | ワイトリシティ コーポレーションWitricity Corporation | 減少した場を有する無線エネルギー伝送 |
JP2014116887A (ja) * | 2012-12-12 | 2014-06-26 | Nippon Telegr & Teleph Corp <Ntt> | 近傍磁界アンテナ |
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US10340598B2 (en) | 2019-07-02 |
EP3346553A4 (en) | 2019-05-01 |
KR101919397B1 (ko) | 2018-11-16 |
CN108140949A (zh) | 2018-06-08 |
CN108140949B (zh) | 2019-06-25 |
EP3346553A1 (en) | 2018-07-11 |
EP3346553B1 (en) | 2020-10-14 |
US20180287257A1 (en) | 2018-10-04 |
JP6069548B1 (ja) | 2017-02-01 |
JP2017130883A (ja) | 2017-07-27 |
KR20180039738A (ko) | 2018-04-18 |
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