CA1233540A - Electronic article surveillance system having low profile antennas - Google Patents

Electronic article surveillance system having low profile antennas

Info

Publication number
CA1233540A
CA1233540A CA000459813A CA459813A CA1233540A CA 1233540 A CA1233540 A CA 1233540A CA 000459813 A CA000459813 A CA 000459813A CA 459813 A CA459813 A CA 459813A CA 1233540 A CA1233540 A CA 1233540A
Authority
CA
Canada
Prior art keywords
patch
ground plane
antenna
transmitter
patches
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
Application number
CA000459813A
Other languages
English (en)
French (fr)
Inventor
Samuel Sensiper
Philip D. Fancher
Harold B. Williams
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.)
Zeneca Inc
Original Assignee
ICI Americas Inc
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 ICI Americas Inc filed Critical ICI Americas Inc
Application granted granted Critical
Publication of CA1233540A publication Critical patent/CA1233540A/en
Expired 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Burglar Alarm Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
CA000459813A 1983-08-01 1984-07-26 Electronic article surveillance system having low profile antennas Expired CA1233540A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51939583A 1983-08-01 1983-08-01
US519,395 1983-08-01

Publications (1)

Publication Number Publication Date
CA1233540A true CA1233540A (en) 1988-03-01

Family

ID=24068144

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000459813A Expired CA1233540A (en) 1983-08-01 1984-07-26 Electronic article surveillance system having low profile antennas

Country Status (9)

Country Link
EP (1) EP0135049B1 (ja)
JP (1) JPS60100071A (ja)
AR (1) AR241390A1 (ja)
AT (1) ATE35063T1 (ja)
AU (1) AU573749B2 (ja)
BR (1) BR8403774A (ja)
CA (1) CA1233540A (ja)
DE (1) DE3472019D1 (ja)
NZ (1) NZ209068A (ja)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4647910A (en) * 1985-09-17 1987-03-03 Allied Corporation Selector for AC magnetic inductive field receiver coils
DE4436975B4 (de) * 1994-10-15 2007-10-25 Meto International Gmbh Verfahren zur elektronischen Artikelüberwachung
US7127255B2 (en) 2002-10-01 2006-10-24 Trango Systems, Inc. Wireless point to multipoint system
EP1671264A1 (en) * 2003-09-29 2006-06-21 Koninklijke Philips Electronics N.V. System, station, device and method for obtaining quantities
JP2006020083A (ja) * 2004-07-01 2006-01-19 Omron Corp タグ通信用アンテナ、タグ通信装置、タグ通信システム、タグ通信装置のスキャン調整方法、およびスキャン調整プログラム
EP1684247A1 (de) * 2005-01-20 2006-07-26 Inventio Ag Warendiebstahlsicherung, Verfahren zur Installation einer solchen Warendiebstahlsicherung sowie Verfahren zur Sicherung von Waren gegen Diebstahl
US7576655B2 (en) 2005-03-29 2009-08-18 Accu-Sort Systems, Inc. RFID conveyor system and method
US8854212B2 (en) 2009-03-30 2014-10-07 Datalogic Automation, Inc. Radio frequency identification tag identification system
US10367259B2 (en) 2017-01-12 2019-07-30 Arris Enterprises Llc Antenna with enhanced azimuth gain
CN115275643A (zh) * 2022-08-29 2022-11-01 重庆大学 一种具有可定制波束倾角的微带天线及其设计方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO126975B (ja) * 1967-03-30 1973-04-16 John Welsh
US3680136A (en) * 1971-10-20 1972-07-25 Us Navy Current sheet antenna
US3895368A (en) * 1972-08-09 1975-07-15 Sensormatic Electronics Corp Surveillance system and method utilizing both electrostatic and electromagnetic fields
US4366484A (en) * 1978-12-29 1982-12-28 Ball Corporation Temperature compensated radio frequency antenna and methods related thereto
US4386357A (en) * 1981-05-21 1983-05-31 Martin Marietta Corporation Patch antenna having tuning means for improved performance

Also Published As

Publication number Publication date
AU573749B2 (en) 1988-06-23
BR8403774A (pt) 1985-07-02
AU3121984A (en) 1985-02-07
DE3472019D1 (en) 1988-07-14
EP0135049B1 (en) 1988-06-08
EP0135049A1 (en) 1985-03-27
NZ209068A (en) 1988-03-30
JPS60100071A (ja) 1985-06-03
AR241390A1 (es) 1992-06-30
ATE35063T1 (de) 1988-06-15

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Legal Events

Date Code Title Description
MKEX Expiry