AR007445A1 - Un transmisor para una disposicion de vigilancia electronica de articulos, aparato de interconexion del trasmisor con antenas, metodo de energizacionselectiva de las antenas, y multiplexor de antena - Google Patents

Un transmisor para una disposicion de vigilancia electronica de articulos, aparato de interconexion del trasmisor con antenas, metodo de energizacionselectiva de las antenas, y multiplexor de antena

Info

Publication number
AR007445A1
AR007445A1 ARP970102739A ARP970102739A AR007445A1 AR 007445 A1 AR007445 A1 AR 007445A1 AR P970102739 A ARP970102739 A AR P970102739A AR P970102739 A ARP970102739 A AR P970102739A AR 007445 A1 AR007445 A1 AR 007445A1
Authority
AR
Argentina
Prior art keywords
transmitter
winding
antenna
antennas
electronic article
Prior art date
Application number
ARP970102739A
Other languages
English (en)
Original Assignee
Sensormatic Electronics Corp
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 Sensormatic Electronics Corp filed Critical Sensormatic Electronics Corp
Publication of AR007445A1 publication Critical patent/AR007445A1/es

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
    • G08B13/2477—Antenna or antenna activator circuit
    • 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
    • G08B13/2488—Timing issues, e.g. synchronising measures to avoid signal collision, with multiple emitters or a single emitter and receiver

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Near-Field Transmission Systems (AREA)
  • Burglar Alarm Systems (AREA)
  • Electronic Switches (AREA)

Abstract

Un transmisor para una disposición de vigilancia electrónica de artículos, aparato de interconexión del transmisor con antenas, método deenergización selectiva de las antenas, y multiplexor de antena. El transmisor tiene un primer y unsegundo terminales y cada una de las antenas incluye unabobina de antena. La disposición de multiplexación incluye un transformador reductor que tiene un bobinado primario conectado a los terminales primero ysegundo del transmisor, y también tiene un segundo bobinado. Un primer bobinado está posicionado para acoplarse inductivamente con la bobina deantena de una primera antena y un segundo bobinado está posicionado para acoplarse inductivamente con la bobina de antena de unasegunda antena.La disposición de multiplexación también incluye un primer conmutador y un cableado que forma una conexión de lazo en serie que incluye un primerbobinado, el segundo bobinado, el primer conmutador y el bobinado secundario del transformador. El primer conmutador está dispuesto para selectivamenteabrir el circuito de la conexión de lazo en serie. También incluido en la disposición de multiplexación se dispone un segundo conmutador conectado alsegundo bobinado para selectivamente cortocircuitar el segundo bobinado y un tercer conmutador conectado al primer bobinado para selectivamentecortocircuitar el primer bobinado. El primer, el segundo y el tercer conmutador pueden ser implementados utilizando transistores de efecto de campo MOSFETque están completamente aislados del transmisor.
ARP970102739A 1996-06-20 1997-06-20 Un transmisor para una disposicion de vigilancia electronica de articulos, aparato de interconexion del trasmisor con antenas, metodo de energizacionselectiva de las antenas, y multiplexor de antena AR007445A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/667,811 US5786763A (en) 1996-06-20 1996-06-20 Antenna multiplexer with isolation of switching elements

Publications (1)

Publication Number Publication Date
AR007445A1 true AR007445A1 (es) 1999-10-27

Family

ID=24679746

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP970102739A AR007445A1 (es) 1996-06-20 1997-06-20 Un transmisor para una disposicion de vigilancia electronica de articulos, aparato de interconexion del trasmisor con antenas, metodo de energizacionselectiva de las antenas, y multiplexor de antena

Country Status (9)

Country Link
US (1) US5786763A (es)
EP (1) EP0906604B1 (es)
JP (1) JP3881030B2 (es)
AR (1) AR007445A1 (es)
AU (1) AU721169B2 (es)
BR (1) BR9710853A (es)
CA (1) CA2256746C (es)
DE (1) DE69730427T2 (es)
WO (1) WO1997049075A1 (es)

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Also Published As

Publication number Publication date
EP0906604A1 (en) 1999-04-07
DE69730427D1 (de) 2004-09-30
AU721169B2 (en) 2000-06-22
BR9710853A (pt) 1999-08-17
EP0906604B1 (en) 2004-08-25
JP2000513122A (ja) 2000-10-03
EP0906604A4 (en) 2000-07-26
JP3881030B2 (ja) 2007-02-14
AU3477897A (en) 1998-01-07
DE69730427T2 (de) 2005-01-13
WO1997049075A1 (en) 1997-12-24
CA2256746C (en) 2003-12-02
CA2256746A1 (en) 1997-12-24
US5786763A (en) 1998-07-28

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