JP3781042B2 - アンテナ装置 - Google Patents
アンテナ装置 Download PDFInfo
- Publication number
- JP3781042B2 JP3781042B2 JP2004102114A JP2004102114A JP3781042B2 JP 3781042 B2 JP3781042 B2 JP 3781042B2 JP 2004102114 A JP2004102114 A JP 2004102114A JP 2004102114 A JP2004102114 A JP 2004102114A JP 3781042 B2 JP3781042 B2 JP 3781042B2
- Authority
- JP
- Japan
- Prior art keywords
- antenna
- loop
- magnetic flux
- transmission
- receiving antenna
- 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
Links
- 230000004907 flux Effects 0.000 claims abstract description 110
- 230000005540 biological transmission Effects 0.000 claims description 56
- 238000004891 communication Methods 0.000 claims description 21
- 238000001514 detection method Methods 0.000 description 24
- 230000000712 assembly Effects 0.000 description 7
- 238000000429 assembly Methods 0.000 description 7
- 101100084165 Caenorhabditis elegans prdx-2 gene Proteins 0.000 description 6
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
- G06K7/10316—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers
- G06K7/10336—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves using at least one antenna particularly designed for interrogating the wireless record carriers the antenna being of the near field type, inductive coil
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
- G08B13/2468—Antenna in system and the related signal processing
- G08B13/2471—Antenna signal processing by receiver or emitter
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
- G08B13/2465—Aspects related to the EAS system, e.g. system components other than tags
- G08B13/2468—Antenna in system and the related signal processing
- G08B13/2474—Antenna or antenna activator geometry, arrangement or layout
-
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B5/00—Near-field transmission systems, e.g. inductive or capacitive transmission systems
- H04B5/20—Near-field transmission systems, e.g. inductive or capacitive transmission systems characterised by the transmission technique; characterised by the transmission medium
- H04B5/24—Inductive coupling
- H04B5/26—Inductive coupling using coils
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Computer Security & Cryptography (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Theoretical Computer Science (AREA)
- Computer Vision & Pattern Recognition (AREA)
- General Health & Medical Sciences (AREA)
- Artificial Intelligence (AREA)
- Near-Field Transmission Systems (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Details Of Aerials (AREA)
- Burglar Alarm Systems (AREA)
- Support Of Aerials (AREA)
Description
前記送信アンテナには、この送信アンテナに限らず、送信機能と受信機能を備えた送受信アンテナを適用することもできる。
図面はアンテナ装置を示し、図1は入退室の管理を行うアンテナ装置11の実施の形態を示す。
例えば、図3に示すように、送信アンテナ34は、上述の実施の形態と同構成であり、長方形のループを3個直列して配置した第1〜第3ループアンテナ31〜33を有している。このうち、両端部の第1,第3ループアンテナ31,33と、中間部の第2ループアンテナ32とは逆位相の電流が流れる。
まず、図11は、3ループの送信アンテナ111に電流を流した場合の、送信アンテナ111及び受信アンテナ112が配置されている平面における、紙面に対して垂直方向の磁束密度の分布を色の濃淡によって示している。
この図4の例の場合、S41,S42に生じる磁界の方向を同じにし、S43,S44に生じる磁界の方向を同じにすることで、上述の磁界の方向では検出しきれない検出領域を時間的に補完することができる。
送信アンテナに流す電流の位相パターンを、更に他にも用いる場合には、それぞれの場合において、受信アンテナ46に流れる電流が最も少なくなる最適な場合を幅狭部48の形状の調整によって見つけ出す。
このアンテナ装置51は物品52を搭載して搬送するベルトコンベア53の上下面を挟む上下方向に隔たった検出位置に、第1のアンテナ組立体54と第2のアンテナ組立体55を対設して構成したものである。
この発明のデータキャリアは、実施の形態のRFタグ16,56に対応し、
以下同様に、
ループ形状の変形は、幅狭部28,48と幅広部38とに対応するも、
この発明は、上述の実施の形態の構成のみに限定されるものではなく、請求項に示される技術思想に基づいて応用することができ、多くの実施の形態を得ることができる。
12…出入口
13…入退室通路
14,15,47,47’,54,55…アンテナ組立体
16,56…RFタグ
17,57…検出領域
18…人
21,31,41,71a,81a,91a…第1ループアンテナ
22,32,42,71b,81b,91b…第2ループアンテナ
23,33,43,91c…第3ループアンテナ
44…第4ループアンテナ
24,34,45,61,71,81,91,111…送信アンテナ
25,49…送信機
26,36,46,46’,62,72,92,112…受信アンテナ
27…受信機
28,48…幅狭部
38…幅広部
47a,47b…マッチング回路
50…分配器
51…アンテナ装置
52…物品
53…ベルトコンベア
63,73a,73b…電流
S21〜S23,S31〜S33,S41〜S44,S’41〜S’44…磁束通過領域
Claims (1)
- 同一平面上に直線的に隣り合って矩形のループ状に配置された3つのループを備え、これらの直線的に隣り合う中央のループに流れる電流に対して両端のループに流れる電流を逆位相にしたループを少なくとも1つ以上有する送信アンテナと、該送信アンテナと同平面上で沿うように配置され、該送信アンテナのループ形状に対応させた矩形の1ループの受信アンテナとを組合せた1組以上のアンテナ組立体を有し、このアンテナ組立体とデータキャリアとの間で非接触にデータ通信を行うアンテナ装置であって、
前記送信アンテナの各ループと対応する前記受信アンテナの各磁束通過領域に生じる正位相の磁束量と逆位相の磁束量との総和が打ち消し合うように、該送信アンテナの上記中央のループに対応する該受信アンテナのループ形状の略中央部に、磁束量調整用の幅狭部を備えたアンテナ装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004102114A JP3781042B2 (ja) | 2003-04-07 | 2004-03-31 | アンテナ装置 |
US10/817,831 US7046208B2 (en) | 2003-04-07 | 2004-04-06 | Antenna apparatus |
EP04252067A EP1467435B1 (en) | 2003-04-07 | 2004-04-07 | Loop antenna apparatus |
AT04252067T ATE354184T1 (de) | 2003-04-07 | 2004-04-07 | Schleifenantennenanordnung |
DE602004004689T DE602004004689T2 (de) | 2003-04-07 | 2004-04-07 | Schleifenantennenanordnung |
CNB2004100335745A CN100367565C (zh) | 2003-04-07 | 2004-04-07 | 天线装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003102503 | 2003-04-07 | ||
JP2004102114A JP3781042B2 (ja) | 2003-04-07 | 2004-03-31 | アンテナ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004328722A JP2004328722A (ja) | 2004-11-18 |
JP3781042B2 true JP3781042B2 (ja) | 2006-05-31 |
Family
ID=32871242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004102114A Expired - Fee Related JP3781042B2 (ja) | 2003-04-07 | 2004-03-31 | アンテナ装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7046208B2 (ja) |
EP (1) | EP1467435B1 (ja) |
JP (1) | JP3781042B2 (ja) |
CN (1) | CN100367565C (ja) |
AT (1) | ATE354184T1 (ja) |
DE (1) | DE602004004689T2 (ja) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US7432855B2 (en) * | 2004-06-03 | 2008-10-07 | Farrokh Mohamadi | RFID reader and active tag |
EP1717727A1 (en) * | 2005-04-18 | 2006-11-02 | IEE INTERNATIONAL ELECTRONICS & ENGINEERING S.A. | RFID transceiver unit |
WO2008062514A1 (fr) * | 2006-11-21 | 2008-05-29 | Pioneer Corporation | Appareil de communication |
US8422973B2 (en) | 2009-06-16 | 2013-04-16 | B & Plus K.K. | Bidirectional transmission coil and bidirectional transmission system using the same |
US20120244802A1 (en) * | 2011-03-24 | 2012-09-27 | Lei Feng | On chip inductor |
EP2511977A1 (fr) * | 2011-04-15 | 2012-10-17 | Gemalto SA | Agencement d'antennes émettrice et réceptrice de champ électromagnétique |
KR20140040551A (ko) * | 2012-09-26 | 2014-04-03 | 한국전자통신연구원 | 루프 안테나 |
USD749062S1 (en) | 2013-01-02 | 2016-02-09 | Callas Enterprises Llc | Combined floor mat and EAS antenna |
JP6160288B2 (ja) * | 2013-03-04 | 2017-07-12 | 船井電機株式会社 | 給電装置 |
DE102013005428B4 (de) * | 2013-03-28 | 2015-03-05 | Sew-Eurodrive Gmbh & Co Kg | System, umfassend einen Transponder und ein relativ zum Transponder bewegbares Mobilteil |
WO2016157226A1 (en) * | 2015-04-02 | 2016-10-06 | Parma Gianluca | Rfid and/or rfid/em anti-theft radio frequency detection device |
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 |
JP6069548B1 (ja) * | 2016-01-22 | 2017-02-01 | 日本電信電話株式会社 | ループアンテナアレイ群 |
EP3432420B1 (en) * | 2016-03-15 | 2022-10-26 | Nippon Telegraph and Telephone Corporation | Loop antenna array |
CN218867387U (zh) * | 2018-12-28 | 2023-04-14 | 株式会社村田制作所 | 天线装置 |
FR3100665B1 (fr) * | 2019-09-10 | 2021-09-24 | Biolog Id | Dispositif de communication sans fil, installation de stockage et procédé de communication |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4260990A (en) * | 1979-11-08 | 1981-04-07 | Lichtblau G J | Asymmetrical antennas for use in electronic security systems |
US4866455A (en) * | 1985-01-10 | 1989-09-12 | Lichtblau G J | Antenna system for magnetic and resonant circuit detection |
US5061941A (en) | 1990-02-01 | 1991-10-29 | Checkpoint Systems, Inc. | Composite antenna for electronic article surveillance systems |
NL9400076A (nl) | 1994-01-17 | 1995-09-01 | Nedap Nv | Diefstaldetectie- en identificatiesysteem. |
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 |
US6166706A (en) * | 1998-11-04 | 2000-12-26 | Checkpoint Systems, Inc. | Rotating field antenna with a magnetically coupled quadrature loop |
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 |
-
2004
- 2004-03-31 JP JP2004102114A patent/JP3781042B2/ja not_active Expired - Fee Related
- 2004-04-06 US US10/817,831 patent/US7046208B2/en not_active Expired - Fee Related
- 2004-04-07 AT AT04252067T patent/ATE354184T1/de not_active IP Right Cessation
- 2004-04-07 EP EP04252067A patent/EP1467435B1/en not_active Expired - Lifetime
- 2004-04-07 CN CNB2004100335745A patent/CN100367565C/zh not_active Expired - Fee Related
- 2004-04-07 DE DE602004004689T patent/DE602004004689T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2004328722A (ja) | 2004-11-18 |
DE602004004689D1 (de) | 2007-03-29 |
US20040196205A1 (en) | 2004-10-07 |
CN1536714A (zh) | 2004-10-13 |
EP1467435A1 (en) | 2004-10-13 |
ATE354184T1 (de) | 2007-03-15 |
EP1467435B1 (en) | 2007-02-14 |
CN100367565C (zh) | 2008-02-06 |
US7046208B2 (en) | 2006-05-16 |
DE602004004689T2 (de) | 2007-10-31 |
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