ATE169776T1 - Antennenvorrichtung - Google Patents

Antennenvorrichtung

Info

Publication number
ATE169776T1
ATE169776T1 AT94810334T AT94810334T ATE169776T1 AT E169776 T1 ATE169776 T1 AT E169776T1 AT 94810334 T AT94810334 T AT 94810334T AT 94810334 T AT94810334 T AT 94810334T AT E169776 T1 ATE169776 T1 AT E169776T1
Authority
AT
Austria
Prior art keywords
electrically
loop
partial
antenna device
antenna
Prior art date
Application number
AT94810334T
Other languages
English (en)
Inventor
Philipp Mueller
Original Assignee
Actron Entwicklungs Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Actron Entwicklungs Ag filed Critical Actron Entwicklungs Ag
Application granted granted Critical
Publication of ATE169776T1 publication Critical patent/ATE169776T1/de

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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
    • G08B13/2477—Antenna or antenna activator circuit
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Automation & Control Theory (AREA)
  • Electromagnetism (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Details Of Aerials (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Support Of Aerials (AREA)
AT94810334T 1993-07-13 1994-06-06 Antennenvorrichtung ATE169776T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH209493 1993-07-13

Publications (1)

Publication Number Publication Date
ATE169776T1 true ATE169776T1 (de) 1998-08-15

Family

ID=4225752

Family Applications (1)

Application Number Title Priority Date Filing Date
AT94810334T ATE169776T1 (de) 1993-07-13 1994-06-06 Antennenvorrichtung

Country Status (6)

Country Link
US (1) US5663738A (de)
EP (1) EP0634807B1 (de)
JP (1) JP3606603B2 (de)
AT (1) ATE169776T1 (de)
DE (1) DE59406653D1 (de)
ES (1) ES2122209T3 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5825335A (en) * 1995-10-23 1998-10-20 Kubota Corporation Sheet antenna apparatus
JPH10303635A (ja) * 1997-04-25 1998-11-13 Matsushita Electric Ind Co Ltd ループアンテナ回路
US5963173A (en) * 1997-12-05 1999-10-05 Sensormatic Electronics Corporation Antenna and transmitter arrangement for EAS system
FR2784524B1 (fr) * 1998-10-12 2006-07-07 Dassault Electronique Antenne perfectionnee, notamment pour un lecteur de badge sans contact
US6166706A (en) * 1998-11-04 2000-12-26 Checkpoint Systems, Inc. Rotating field antenna with a magnetically coupled quadrature loop
US6025807A (en) * 1999-03-12 2000-02-15 Lucent Technologies, Inc. Orientation independent loop antenna
JP3498716B2 (ja) * 2001-02-09 2004-02-16 オムロン株式会社 アンテナ装置
TWI296062B (en) * 2001-12-28 2008-04-21 Sanyo Electric Co Liquid crystal display device
CA2389791C (en) * 2002-06-20 2004-10-19 James Stanley Podger Multiloop antenna elements
CN100583554C (zh) * 2003-08-29 2010-01-20 精工爱普生株式会社 环形天线装置
ATE391975T1 (de) * 2004-04-28 2008-04-15 Checkpoint Systems Inc Elektronisches artikelverfolgungssystem für ein kaufhausregal mit einer schleifenantenne
WO2006008705A1 (en) * 2004-07-16 2006-01-26 Koninklijke Philips Electronics N.V. Antenna for communication with a multitude of transponders
JP4890097B2 (ja) * 2006-05-19 2012-03-07 日本信号株式会社 磁束発生装置及び物品管理収納装置
US20090135080A1 (en) * 2007-11-28 2009-05-28 Stichting Astron Magnetc radiator arranged with decoupling means
JP2012143061A (ja) * 2010-12-28 2012-07-26 Central Japan Railway Co ２重ループ構造

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2597518A (en) * 1949-10-17 1952-05-20 Motorola Inc Vehicle detecting system
US4016553A (en) * 1975-06-27 1977-04-05 Knogo Corporation Article detection system with near field electromagnetic wave control
US4135183A (en) * 1977-05-24 1979-01-16 Minnesota Mining And Manufacturing Company Antipilferage system utilizing "figure-8" shaped field producing and detector coils
US4243980A (en) * 1978-02-17 1981-01-06 Lichtblau G J Antenna system for electronic security installations
US4260990A (en) * 1979-11-08 1981-04-07 Lichtblau G J Asymmetrical antennas for use in electronic security systems
US4251808A (en) * 1979-11-15 1981-02-17 Lichtblau G J Shielded balanced loop antennas for electronic security systems
GB2180123B (en) * 1984-12-21 1989-01-18 Senezco Limited Transponder systems
US4633250A (en) * 1985-01-07 1986-12-30 Allied Corporation Coplanar antenna for proximate surveillance 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
US4720701A (en) * 1986-01-02 1988-01-19 Lichtblau G J System with enhanced signal detection and discrimination with saturable magnetic marker
US4859991A (en) * 1987-08-28 1989-08-22 Sensormatic Electronics Corporation Electronic article surveillance system employing time domain and/or frequency domain analysis and computerized operation
US4872018A (en) * 1987-08-31 1989-10-03 Monarch Marking Systems, Inc. Multiple loop antenna
US4999641A (en) * 1989-09-01 1991-03-12 Monarch Marking Systems, Inc. Magnetic antenna system having independently controllable electrical field shielding and magnetic field balance
US5061941A (en) * 1990-02-01 1991-10-29 Checkpoint Systems, Inc. Composite antenna for electronic article surveillance systems
GB9004431D0 (en) * 1990-02-28 1990-04-25 Scient Generics Ltd Detection system for security systems

Also Published As

Publication number Publication date
EP0634807B1 (de) 1998-08-12
JP3606603B2 (ja) 2005-01-05
DE59406653D1 (de) 1998-09-17
US5663738A (en) 1997-09-02
EP0634807A1 (de) 1995-01-18
JPH07154130A (ja) 1995-06-16
ES2122209T3 (es) 1998-12-16

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