DE69302052D1 - Elektromagnetisches Detektor System - Google Patents

Elektromagnetisches Detektor System

Info

Publication number
DE69302052D1
DE69302052D1 DE69302052T DE69302052T DE69302052D1 DE 69302052 D1 DE69302052 D1 DE 69302052D1 DE 69302052 T DE69302052 T DE 69302052T DE 69302052 T DE69302052 T DE 69302052T DE 69302052 D1 DE69302052 D1 DE 69302052D1
Authority
DE
Germany
Prior art keywords
loop antenna
series
frequency
source circuit
circuit
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
DE69302052T
Other languages
English (en)
Other versions
DE69302052T2 (de
Inventor
Paulus Rebers
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 DE69302052D1 publication Critical patent/DE69302052D1/de
Application granted granted Critical
Publication of DE69302052T2 publication Critical patent/DE69302052T2/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
    • G08B13/2405—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 characterised by the tag technology used
    • G08B13/2422—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 characterised by the tag technology used using acoustic or microwave tags
    • 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
    • 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
    • G06K7/10346—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 far field type, e.g. HF types or dipoles
    • 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
    • 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
    • G08B13/2477—Antenna or antenna activator circuit

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Computer Security & Cryptography (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Health & Medical Sciences (AREA)
  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
DE69302052T 1992-07-15 1993-07-14 Elektromagnetisches Detektor System Expired - Fee Related DE69302052T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL9201270A NL9201270A (nl) 1992-07-15 1992-07-15 Antiwinkeldiefstal-antenne met draaiveld.

Publications (2)

Publication Number Publication Date
DE69302052D1 true DE69302052D1 (de) 1996-05-09
DE69302052T2 DE69302052T2 (de) 1996-12-12

Family

ID=19861063

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69302052T Expired - Fee Related DE69302052T2 (de) 1992-07-15 1993-07-14 Elektromagnetisches Detektor System

Country Status (5)

Country Link
EP (1) EP0579332B1 (de)
AT (1) ATE136388T1 (de)
CA (1) CA2100614A1 (de)
DE (1) DE69302052T2 (de)
NL (1) NL9201270A (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1001125C2 (nl) * 1995-09-04 1997-03-05 Nedap Nv Verbeterd draaiveldnetwerk.
FR2780220A1 (fr) 1998-06-22 1999-12-24 Sgs Thomson Microelectronics Transmission de donnees numeriques sur une ligne d'alimentation alternative
FR2780221B1 (fr) 1998-06-22 2000-09-29 Sgs Thomson Microelectronics Emission d'une consigne de fonctionnement par une ligne d'alimentation alternative
NL1011673C2 (nl) * 1999-03-25 2000-09-27 Nedap Nv Draaiveld ontvanger voor magnetisch identificatiesysteem.
FR2792136B1 (fr) 1999-04-07 2001-11-16 St Microelectronics Sa Transmission en duplex dans un systeme de transpondeurs electromagnetiques
FR2792134B1 (fr) 1999-04-07 2001-06-22 St Microelectronics Sa Detection de distance entre un transpondeur electromagnetique et une borne
FR2792130B1 (fr) * 1999-04-07 2001-11-16 St Microelectronics Sa Transpondeur electromagnetique a fonctionnement en couplage tres proche
FR2792135B1 (fr) 1999-04-07 2001-11-02 St Microelectronics Sa Fonctionnement en complage tres proche d'un systeme a transpondeur electromagnetique
US6650226B1 (en) 1999-04-07 2003-11-18 Stmicroelectronics S.A. Detection, by an electromagnetic transponder reader, of the distance separating it from a transponder
FR2792132B1 (fr) 1999-04-07 2001-11-02 St Microelectronics Sa Borne de lecture d'un transpondeur electromagnetique fonctionnant en couplage tres proche
FR2796781A1 (fr) 1999-07-20 2001-01-26 St Microelectronics Sa Dimensionnement d'un systeme a transpondeur electromagnetique pour un fonctionnement en hyperproximite
FR2808942B1 (fr) 2000-05-12 2002-08-16 St Microelectronics Sa Validation de la presence d'un transpondeur electromagnetique dans le champ d'un lecteur a demodulation de phase
FR2808945B1 (fr) 2000-05-12 2002-08-16 St Microelectronics Sa Evaluation du nombre de transpondeurs electromagnetiques dans le champ d'un lecteur
FR2808946A1 (fr) 2000-05-12 2001-11-16 St Microelectronics Sa Validation de la presence d'un transpondeur electromagnetique dans le champ d'un lecteur
FR2809251B1 (fr) 2000-05-17 2003-08-15 St Microelectronics Sa Dispositif de production d'un champ electromagnetique pour transpondeur
FR2809235A1 (fr) 2000-05-17 2001-11-23 St Microelectronics Sa Antenne de generation d'un champ electromagnetique pour transpondeur
FR2812986B1 (fr) 2000-08-09 2002-10-31 St Microelectronics Sa Detection d'une signature electrique d'un transpondeur electromagnetique
US20030169169A1 (en) 2000-08-17 2003-09-11 Luc Wuidart Antenna generating an electromagnetic field for transponder
GB0328359D0 (en) * 2003-12-06 2004-01-14 Telegesis Uk Ltd Radio frequency antenna
US8933790B2 (en) 2007-06-08 2015-01-13 Checkpoint Systems, Inc. Phase coupler for rotating fields
EP2469652A1 (de) 2007-06-08 2012-06-27 Checkpoint Systems, Inc. Dynamisches Detektionssystem und -verfahren zur elektronischen Warenüberwachung
JP6263662B1 (ja) 2017-06-19 2018-01-17 日本電信電話株式会社 アンテナ回路
GB2580117A (en) 2018-12-21 2020-07-15 Bombardier Primove Gmbh An antenna arrangement and a method of operating an antenna arrangement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3045703A1 (de) * 1980-12-04 1982-07-22 Elan-Schaltelemente Kurt Maecker Gmbh, 4040 Neuss Einrichtung zur erkennung und deaktivierung eines an einer ware befestigten sicherungsstreifens
GB2180123B (en) * 1984-12-21 1989-01-18 Senezco Limited Transponder systems
NL9002120A (nl) * 1990-09-28 1992-04-16 Nedap Nv Pulsdeactivator.

Also Published As

Publication number Publication date
CA2100614A1 (en) 1994-01-16
DE69302052T2 (de) 1996-12-12
EP0579332A1 (de) 1994-01-19
NL9201270A (nl) 1994-02-01
EP0579332B1 (de) 1996-04-03
ATE136388T1 (de) 1996-04-15

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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