AR002136A1 - Conjunto de antena para una disposicion electronica de vigilancia de articulos. - Google Patents

Conjunto de antena para una disposicion electronica de vigilancia de articulos.

Info

Publication number
AR002136A1
AR002136A1 ARP960102781A AR10278196A AR002136A1 AR 002136 A1 AR002136 A1 AR 002136A1 AR P960102781 A ARP960102781 A AR P960102781A AR 10278196 A AR10278196 A AR 10278196A AR 002136 A1 AR002136 A1 AR 002136A1
Authority
AR
Argentina
Prior art keywords
loops
phase
antenna assembly
electronic article
article surveillance
Prior art date
Application number
ARP960102781A
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 AR002136A1 publication Critical patent/AR002136A1/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
    • G08B13/2468—Antenna in system and the related signal processing
    • G08B13/2471—Antenna signal processing by receiver or emitter
    • 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

Un conjunto de antena, para una disposición electrónica de vigilancia de artículos, donde se utilizan antenas receptoras y transmisoras de cuadraturapara mejorar la distribución de campo. Un conjunto de antena transmisora incluye lazos de antena coplanares adyacentes primero y segundo (60, 62, Fig.2)y un circuito de excitación (46 Fig. 2) para generar respectivas corrientes alternas en los lazos primero y segundo de manera tal que las respectivascorrientes alternas estén desfasadasen 90°. En un conjunto de recepción respectivas senales recibidas desde dos lazos de antena coplanares adyacentesestán respectivamente desfasados en +45° y -45°, y las senales desplazadas en fase resultantes son sumadas. Un conjunto de antena transmisora con cancelaciónalejada de campo incluye cuatro lazos operados en fases de 0°, 90°, 180° y 270° respectivamente. Los cuatro lazos pueden ser coplanares, estando cualquiera delos segmentos verticales agrupados horizontalmente desplazadosunos de otros. Alternativamente, los lazos de 0° y 180° pueden también estar dispuestos en unplano común que está cercano a y que es paralelo con otro plano en el cual están dispuestos los lazos de 90° y 270°.
ARP960102781A 1995-05-30 1996-05-29 Conjunto de antena para una disposicion electronica de vigilancia de articulos. AR002136A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US45296895A 1995-05-30 1995-05-30

Publications (1)

Publication Number Publication Date
AR002136A1 true AR002136A1 (es) 1998-01-07

Family

ID=23798701

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP960102781A AR002136A1 (es) 1995-05-30 1996-05-29 Conjunto de antena para una disposicion electronica de vigilancia de articulos.

Country Status (10)

Country Link
US (2) US6081238A (es)
EP (1) EP0829108B1 (es)
JP (1) JP3966556B2 (es)
CN (1) CN1185865A (es)
AR (1) AR002136A1 (es)
AU (1) AU702622B2 (es)
BR (1) BR9609286A (es)
DE (1) DE69636999T2 (es)
ES (1) ES2284172T3 (es)
WO (1) WO1996038877A1 (es)

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Also Published As

Publication number Publication date
EP0829108A4 (en) 2001-03-14
US6081238A (en) 2000-06-27
EP0829108A1 (en) 1998-03-18
AU702622B2 (en) 1999-02-25
JP3966556B2 (ja) 2007-08-29
DE69636999D1 (de) 2007-05-10
WO1996038877A1 (en) 1996-12-05
CN1185865A (zh) 1998-06-24
US6020856A (en) 2000-02-01
BR9609286A (pt) 1999-05-11
JPH11506279A (ja) 1999-06-02
DE69636999T2 (de) 2007-12-13
ES2284172T3 (es) 2007-11-01
EP0829108B1 (en) 2007-03-28
AU5871596A (en) 1996-12-18

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