DE69200869D1 - Antennenvorrichtung für ein Ladendiebstahldetektierungssystem. - Google Patents

Antennenvorrichtung für ein Ladendiebstahldetektierungssystem.

Info

Publication number
DE69200869D1
DE69200869D1 DE69200869T DE69200869T DE69200869D1 DE 69200869 D1 DE69200869 D1 DE 69200869D1 DE 69200869 T DE69200869 T DE 69200869T DE 69200869 T DE69200869 T DE 69200869T DE 69200869 D1 DE69200869 D1 DE 69200869D1
Authority
DE
Germany
Prior art keywords
detection system
antenna device
shoplifting detection
shoplifting
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
Application number
DE69200869T
Other languages
English (en)
Other versions
DE69200869T2 (de
Inventor
Tallienco Wieand Harm Fockens
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.)
Nederlandsche Apparatenfabriek NEDAP NV
Original Assignee
Nederlandsche Apparatenfabriek NEDAP NV
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 Nederlandsche Apparatenfabriek NEDAP NV filed Critical Nederlandsche Apparatenfabriek NEDAP NV
Publication of DE69200869D1 publication Critical patent/DE69200869D1/de
Application granted granted Critical
Publication of DE69200869T2 publication Critical patent/DE69200869T2/de
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
DE1992600869 1991-03-06 1992-03-05 Antennenvorrichtung für ein Ladendiebstahldetektierungssystem. Expired - Fee Related DE69200869T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9100397A NL9100397A (nl) 1991-03-06 1991-03-06 Asymmetrische antenne voor winkeldiefstaldetectiesystemen.

Publications (2)

Publication Number Publication Date
DE69200869D1 true DE69200869D1 (de) 1995-01-26
DE69200869T2 DE69200869T2 (de) 1995-07-06

Family

ID=19858978

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1992600869 Expired - Fee Related DE69200869T2 (de) 1991-03-06 1992-03-05 Antennenvorrichtung für ein Ladendiebstahldetektierungssystem.

Country Status (3)

Country Link
EP (1) EP0502585B1 (de)
DE (1) DE69200869T2 (de)
NL (1) NL9100397A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19503896A1 (de) * 1995-02-07 1996-08-08 Esselte Meto Int Gmbh Einrichtung zur Detektierung eines mit einem elektronischen Sicherungselement versehenen Artikels

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4251808A (en) * 1979-11-15 1981-02-17 Lichtblau G J Shielded balanced loop antennas for electronic security systems
FR2623914A1 (fr) * 1987-11-26 1989-06-02 Ribiere Guy Dispositif electronique de detection d'un marqueur de produits, a la sortie d'un magasin

Also Published As

Publication number Publication date
EP0502585B1 (de) 1994-12-14
NL9100397A (nl) 1992-10-01
DE69200869T2 (de) 1995-07-06
EP0502585A1 (de) 1992-09-09

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee