ZA79542B - Antenna system for electronic security installations - Google Patents

Antenna system for electronic security installations

Info

Publication number
ZA79542B
ZA79542B ZA79542A ZA79542A ZA79542B ZA 79542 B ZA79542 B ZA 79542B ZA 79542 A ZA79542 A ZA 79542A ZA 79542 A ZA79542 A ZA 79542A ZA 79542 B ZA79542 B ZA 79542B
Authority
ZA
South Africa
Prior art keywords
antenna system
electronic security
security installations
installations
electronic
Prior art date
Application number
ZA79542A
Other languages
English (en)
Inventor
G Lichtblau
Original Assignee
G Lichtblau
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 G Lichtblau filed Critical G Lichtblau
Publication of ZA79542B publication Critical patent/ZA79542B/xx

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
    • G08B13/2471—Antenna signal processing by receiver or emitter
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/767—Responders; Transponders
    • 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
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Burglar Alarm Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Alarm Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Near-Field Transmission Systems (AREA)
ZA79542A 1978-02-17 1979-02-08 Antenna system for electronic security installations ZA79542B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/878,753 US4243980A (en) 1978-02-17 1978-02-17 Antenna system for electronic security installations

Publications (1)

Publication Number Publication Date
ZA79542B true ZA79542B (en) 1980-03-26

Family

ID=25372764

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA79542A ZA79542B (en) 1978-02-17 1979-02-08 Antenna system for electronic security installations

Country Status (13)

Country Link
US (1) US4243980A (sv)
JP (2) JPS54115099A (sv)
AU (1) AU531513B2 (sv)
CA (1) CA1138990A (sv)
DE (1) DE2904978A1 (sv)
DK (1) DK156857C (sv)
ES (1) ES477673A1 (sv)
FR (1) FR2427697A1 (sv)
GB (1) GB2014796B (sv)
IT (1) IT1118373B (sv)
MX (1) MX147098A (sv)
SE (1) SE439850B (sv)
ZA (1) ZA79542B (sv)

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DE4200082A1 (de) * 1992-01-03 1993-07-08 Minnesota Mining & Mfg Vorrichtung und verfahren zum erkennen eines magnetisierbaren markierungselementes
GB9220411D0 (en) * 1992-09-28 1992-11-11 Texas Instruments Holland Noise cancelling in antennae and the like
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US5387900A (en) * 1992-11-19 1995-02-07 Sensormatic Electronics Corporation EAS system with improved processing of antenna signals
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ATE169776T1 (de) * 1993-07-13 1998-08-15 Actron Entwicklungs Ag Antennenvorrichtung
NL9400076A (nl) * 1994-01-17 1995-09-01 Nedap Nv Diefstaldetectie- en identificatiesysteem.
US5694139A (en) * 1994-06-28 1997-12-02 Sony Corporation Short-distance communication antenna and methods of manufacturing and using the short-distance communication antenna
CN1185865A (zh) * 1995-05-30 1998-06-24 传感电子公司 用于改进询问场分布的eas系统天线结构
US5653192A (en) * 1996-03-06 1997-08-05 Alfa Laval Agri Inc. Livestock identification apparatus
AU2546597A (en) * 1996-04-10 1997-10-29 Sentry Technology Corporation Electronic article surveillance system
US5914692A (en) * 1997-01-14 1999-06-22 Checkpoint Systems, Inc. Multiple loop antenna with crossover element having a pair of spaced, parallel conductors for electrically connecting the multiple loops
US5963173A (en) * 1997-12-05 1999-10-05 Sensormatic Electronics Corporation Antenna and transmitter arrangement for EAS system
US6388628B1 (en) 1998-05-18 2002-05-14 Db Tag, Inc. Systems and methods for wirelessly projecting power using in-phase current loops
US6570541B2 (en) 1998-05-18 2003-05-27 Db Tag, Inc. Systems and methods for wirelessly projecting power using multiple in-phase current loops
FR2781088B1 (fr) * 1998-07-08 2000-10-20 Roland Wehrlen Dispositif d'antennes passives dephasees adaptables exterieurement ou interieurement pour telephones h.f portables pour la protection electromagnetique h.f des utilisateurs
JP2000151257A (ja) * 1998-11-12 2000-05-30 Sofueru:Kk 電磁波送受信用アンテナ構造
DE59915137D1 (de) * 1999-12-16 2010-04-08 Infineon Technologies Ag Spulenanordnung für induktive kontaktlose Karten- und ID-Systeme
JP3498716B2 (ja) 2001-02-09 2004-02-16 オムロン株式会社 アンテナ装置
GB2376801B (en) * 2001-06-22 2005-10-19 * Motorola Israel Limited R F Radiators and Transmitters
JP2004227185A (ja) * 2003-01-21 2004-08-12 Toshiba Corp アンテナユニットとカード処理システム
US7026939B2 (en) * 2003-02-10 2006-04-11 Phase Iv Engineering, Inc. Livestock data acquisition and collection
US7019651B2 (en) * 2003-06-16 2006-03-28 Sensormatic Electronics Corporation EAS and RFID systems incorporating field canceling core antennas
JP4032014B2 (ja) * 2003-07-18 2008-01-16 リンテック株式会社 磁界検出用アンテナ、同アンテナを用いる検知タグ検出用ゲート
US7417599B2 (en) * 2004-02-20 2008-08-26 3M Innovative Properties Company Multi-loop antenna for radio frequency identification (RFID) communication
JP2006025363A (ja) * 2004-07-09 2006-01-26 Nippon Signal Co Ltd:The リーダライタ用アンテナ及び物品管理システム
US7591415B2 (en) * 2004-09-28 2009-09-22 3M Innovative Properties Company Passport reader for processing a passport having an RFID element
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US20100066614A1 (en) * 2006-11-21 2010-03-18 Pioneer Corporation Communicating apparatus
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US8933790B2 (en) * 2007-06-08 2015-01-13 Checkpoint Systems, Inc. Phase coupler for rotating fields
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RU2630894C2 (ru) * 2015-03-16 2017-09-14 Валерий Николаевич Фролов Способ радиолокационного обнаружения для технических средств охраны

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US3810147A (en) * 1971-12-30 1974-05-07 G Lichtblau Electronic security system
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Also Published As

Publication number Publication date
JPS59118084U (ja) 1984-08-09
CA1138990A (en) 1983-01-04
US4243980A (en) 1981-01-06
AU4400879A (en) 1979-08-23
MX147098A (es) 1982-10-05
JPS6037675Y2 (ja) 1985-11-09
GB2014796A (en) 1979-08-30
GB2014796B (en) 1982-08-04
DK156857C (da) 1990-02-26
DE2904978C2 (sv) 1988-03-03
AU531513B2 (en) 1983-08-25
FR2427697B1 (sv) 1985-02-08
DK156857B (da) 1989-10-09
FR2427697A1 (fr) 1979-12-28
DK66779A (da) 1979-08-18
IT7967350A0 (it) 1979-02-16
IT1118373B (it) 1986-02-24
SE439850B (sv) 1985-07-01
DE2904978A1 (de) 1979-08-23
ES477673A1 (es) 1980-04-01
SE7901420L (sv) 1979-08-18
JPS54115099A (en) 1979-09-07

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