CA2120183A1 - Antenna lattice for electronic article surveillance system - Google Patents

Antenna lattice for electronic article surveillance system

Info

Publication number
CA2120183A1
CA2120183A1 CA002120183A CA2120183A CA2120183A1 CA 2120183 A1 CA2120183 A1 CA 2120183A1 CA 002120183 A CA002120183 A CA 002120183A CA 2120183 A CA2120183 A CA 2120183A CA 2120183 A1 CA2120183 A1 CA 2120183A1
Authority
CA
Canada
Prior art keywords
segments
surveillance system
electronic article
article surveillance
lattice
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.)
Granted
Application number
CA002120183A
Other languages
French (fr)
Other versions
CA2120183C (en
Inventor
John E. Nelson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of CA2120183A1 publication Critical patent/CA2120183A1/en
Application granted granted Critical
Publication of CA2120183C publication Critical patent/CA2120183C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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

Abstract

An antenna lattice for use in a magnetically based electronic article surveillance system. The lattice includes a field-producing coil assembly which includes a pair of trapezoidal-shaped segments, each having a diagonally extending lower portion, the segments being juxtaposed in a minor image so that the diagonal portions are opposite each other. The segments are connected so that vertical components of the currents in the diagonal sections at least partially cancel. Preferably, top horizontal sections of each segment are located at different levels, thereby extending the upper coverage, and a detector coil preferably also juxtaposed extends above the top horizontal section of the field-producing coil to further extend the range of detection.
CA002120183A 1993-04-29 1994-03-29 Antenna lattice for electronic article surveillance system Expired - Fee Related CA2120183C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/055689 1993-04-29
US08/055,689 US5440296A (en) 1993-04-29 1993-04-29 Coil assembly for electronic article surveillance system

Publications (2)

Publication Number Publication Date
CA2120183A1 true CA2120183A1 (en) 1994-10-30
CA2120183C CA2120183C (en) 2002-02-26

Family

ID=21999538

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002120183A Expired - Fee Related CA2120183C (en) 1993-04-29 1994-03-29 Antenna lattice for electronic article surveillance system

Country Status (5)

Country Link
US (1) US5440296A (en)
EP (1) EP0622766B1 (en)
JP (1) JP3565897B2 (en)
CA (1) CA2120183C (en)
DE (1) DE69414751T2 (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU672556B2 (en) * 1994-04-18 1996-10-03 Delaval Holding Ab Antenna arrangement
ES2145909T3 (en) * 1994-04-18 2000-07-16 Alfa Laval Agri Ab ANTENNA ARRANGEMENT.
CN1185865A (en) * 1995-05-30 1998-06-24 传感电子公司 EAS system antenna configuration for providing improved interrogation field distribution
USD421402S (en) * 1997-09-05 2000-03-07 Checkpoint Systems, Inc. Antenna for an alarm system
US6094137A (en) * 1998-04-22 2000-07-25 Rasch; Arnan R. Book binding, machine, and method for incorporating electronic article surveillance marker into a book
US6061552A (en) * 1998-04-28 2000-05-09 Sensormatic Electronics Corporation EAS pedestal and method for making the same
JP3996293B2 (en) * 1999-03-01 2007-10-24 高千穂交易株式会社 Article monitoring apparatus and article monitoring system
FR2806213B1 (en) * 2000-03-07 2003-09-05 Valeo Electronique ANTENNA, VEHICLE COMMUNICATION SYSTEM, AND VEHICLE HAVING SUCH ANTENNA
ITAR20000040A1 (en) * 2000-09-08 2002-03-08 Alessandro Manneschi TRANSPONDER READER TRANSDUCER FOR PASSAGE CONTROL
WO2002031789A1 (en) * 2000-10-10 2002-04-18 Escort Memory Systems Modular rfid antenna system
JP3498716B2 (en) * 2001-02-09 2004-02-16 オムロン株式会社 Antenna device
ATE434293T1 (en) * 2001-05-04 2009-07-15 Nxp Bv COMMUNICATION DEVICE WITH COIL CONFIGURATION FOR COMMUNICATION WITH STATIONARY DATA CARRIERS
US6836216B2 (en) * 2002-05-09 2004-12-28 Electronic Article Surveillance Technologies, Ltd. Electronic article surveillance system
JP3964782B2 (en) * 2002-12-26 2007-08-22 株式会社日立国際電気 Tag information management device, tag information management antenna
US7233246B2 (en) * 2004-04-14 2007-06-19 Smartguard, Llc Hard cover product with spine-disposed concealed security device
US7183918B1 (en) * 2004-04-14 2007-02-27 Smartguard, Llc Intermediate cover board with concealed security device for hard cover product
US7557717B2 (en) * 2004-04-14 2009-07-07 Smartguard, Llc Hard cover product with concealed security device
US7411499B2 (en) * 2004-04-14 2008-08-12 Smartguard, Llc Hard cover product with concealed security device
US8072330B1 (en) 2004-04-14 2011-12-06 Smartguard, Llc Hard cover product with concealed printed security device
JP2009094865A (en) * 2007-10-10 2009-04-30 Univ Of Electro-Communications Television and liquid crystal television
KR101261686B1 (en) * 2007-11-28 2013-05-06 퀄컴 인코포레이티드 Wireless power range increase using parasitic antennas
US20110148636A1 (en) * 2009-12-17 2011-06-23 3M Innovative Properties Company Detection system
US9424724B2 (en) 2013-08-02 2016-08-23 Bibliotheca Rfid Library Systems Ag Single turn magnetic drive loop for electronic article surveillance
WO2015028343A1 (en) * 2013-08-30 2015-03-05 Koninklijke Philips N.V. Coil arrangement of a mpi system or apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665449A (en) * 1969-07-11 1972-05-23 Minnesota Mining & Mfg Method and apparatus for detecting at a distance the status and identity of objects
US3697996A (en) * 1969-07-11 1972-10-10 Minnesota Mining & Mfg Electromagnetic field producing apparatus and method for sequentially producing a plurality of fields
US4326198A (en) * 1976-08-18 1982-04-20 Knogo Corporation Method and apparatus for the promotion of selected harmonic response signals in an article detection system
US4135183A (en) * 1977-05-24 1979-01-16 Minnesota Mining And Manufacturing Company Antipilferage system utilizing "figure-8" shaped field producing and detector coils
US4135184A (en) * 1977-08-31 1979-01-16 Knogo Corporation Electronic theft detection system for monitoring wide passageways
US4274090A (en) * 1980-02-19 1981-06-16 Knogo Corporation Detection of articles in adjacent passageways
US4309697A (en) * 1980-10-02 1982-01-05 Sensormatic Electronics Corporation Magnetic surveillance system with odd-even harmonic and phase discrimination
GB2133660B (en) * 1982-11-09 1986-07-30 Tag Radionics Ltd Transponder detection systems
US4623877A (en) * 1983-06-30 1986-11-18 Knogo Corporation Method and apparatus for detection of targets in an interrogation zone
US4994939A (en) * 1989-11-15 1991-02-19 Minnesota Mining And Manufacturing Company Universal lattice for magnetic-electronic article surveillance system

Also Published As

Publication number Publication date
DE69414751T2 (en) 1999-07-29
US5440296A (en) 1995-08-08
JP3565897B2 (en) 2004-09-15
DE69414751D1 (en) 1999-01-07
JPH06334418A (en) 1994-12-02
EP0622766B1 (en) 1998-11-25
EP0622766A1 (en) 1994-11-02
CA2120183C (en) 2002-02-26

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20130402