NL9100397A - Asymmetrische antenne voor winkeldiefstaldetectiesystemen. - Google Patents

Asymmetrische antenne voor winkeldiefstaldetectiesystemen. Download PDF

Info

Publication number
NL9100397A
NL9100397A NL9100397A NL9100397A NL9100397A NL 9100397 A NL9100397 A NL 9100397A NL 9100397 A NL9100397 A NL 9100397A NL 9100397 A NL9100397 A NL 9100397A NL 9100397 A NL9100397 A NL 9100397A
Authority
NL
Netherlands
Prior art keywords
pipe
antenna
cross connection
height
base
Prior art date
Application number
NL9100397A
Other languages
English (en)
Dutch (nl)
Original Assignee
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 Nedap Nv filed Critical Nedap Nv
Priority to NL9100397A priority Critical patent/NL9100397A/nl
Priority to EP19920200645 priority patent/EP0502585B1/de
Priority to DE1992600869 priority patent/DE69200869T2/de
Publication of NL9100397A publication Critical patent/NL9100397A/nl

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)
NL9100397A 1991-03-06 1991-03-06 Asymmetrische antenne voor winkeldiefstaldetectiesystemen. NL9100397A (nl)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL9100397A NL9100397A (nl) 1991-03-06 1991-03-06 Asymmetrische antenne voor winkeldiefstaldetectiesystemen.
EP19920200645 EP0502585B1 (de) 1991-03-06 1992-03-05 Antennenvorrichtung für ein Ladendiebstahldetektierungssystem
DE1992600869 DE69200869T2 (de) 1991-03-06 1992-03-05 Antennenvorrichtung für ein Ladendiebstahldetektierungssystem.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9100397 1991-03-06
NL9100397A NL9100397A (nl) 1991-03-06 1991-03-06 Asymmetrische antenne voor winkeldiefstaldetectiesystemen.

Publications (1)

Publication Number Publication Date
NL9100397A true NL9100397A (nl) 1992-10-01

Family

ID=19858978

Family Applications (1)

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

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
DE69200869T2 (de) 1995-07-06
DE69200869D1 (de) 1995-01-26
EP0502585A1 (de) 1992-09-09

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Legal Events

Date Code Title Description
A1B A search report has been drawn up
BV The patent application has lapsed