CA1236542A - Systeme de surveillance electronique d'objets avec antennes a microruban - Google Patents

Systeme de surveillance electronique d'objets avec antennes a microruban

Info

Publication number
CA1236542A
CA1236542A CA000459814A CA459814A CA1236542A CA 1236542 A CA1236542 A CA 1236542A CA 000459814 A CA000459814 A CA 000459814A CA 459814 A CA459814 A CA 459814A CA 1236542 A CA1236542 A CA 1236542A
Authority
CA
Canada
Prior art keywords
antenna
substrate
patches
transmitter
ground plane
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
CA000459814A
Other languages
English (en)
Inventor
Harold B. Williams
Philip D. Fancher
Samuel Sensiper
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 CA1236542A publication Critical patent/CA1236542A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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)
  • Automation & Control Theory (AREA)
  • Computer Security & Cryptography (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Burglar Alarm Systems (AREA)
  • Waveguide Aerials (AREA)
CA000459814A 1983-08-02 1984-07-26 Systeme de surveillance electronique d'objets avec antennes a microruban Expired CA1236542A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US51956683A 1983-08-02 1983-08-02
US519,566 1983-08-02

Publications (1)

Publication Number Publication Date
CA1236542A true CA1236542A (fr) 1988-05-10

Family

ID=24068862

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000459814A Expired CA1236542A (fr) 1983-08-02 1984-07-26 Systeme de surveillance electronique d'objets avec antennes a microruban

Country Status (9)

Country Link
EP (1) EP0133317B1 (fr)
JP (1) JPS60100295A (fr)
AT (1) ATE37453T1 (fr)
AU (1) AU573602B2 (fr)
BR (1) BR8403801A (fr)
CA (1) CA1236542A (fr)
DE (1) DE3474224D1 (fr)
MX (1) MX156403A (fr)
NZ (1) NZ209069A (fr)

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
US6005519A (en) * 1996-09-04 1999-12-21 3 Com Corporation Tunable microstrip antenna and method for tuning the same
US8226003B2 (en) 2006-04-27 2012-07-24 Sirit Inc. Adjusting parameters associated with leakage signals
US8248212B2 (en) 2007-05-24 2012-08-21 Sirit Inc. Pipelining processes in a RF reader
US8427316B2 (en) 2008-03-20 2013-04-23 3M Innovative Properties Company Detecting tampered with radio frequency identification tags
US8446256B2 (en) 2008-05-19 2013-05-21 Sirit Technologies Inc. Multiplexing radio frequency signals
US8169312B2 (en) 2009-01-09 2012-05-01 Sirit Inc. Determining speeds of radio frequency tags
US8416079B2 (en) 2009-06-02 2013-04-09 3M Innovative Properties Company Switching radio frequency identification (RFID) tags
US10062025B2 (en) 2012-03-09 2018-08-28 Neology, Inc. Switchable RFID tag
US10367259B2 (en) 2017-01-12 2019-07-30 Arris Enterprises Llc Antenna with enhanced azimuth gain

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO126975B (fr) * 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
US3921177A (en) * 1973-04-17 1975-11-18 Ball Brothers Res Corp Microstrip antenna structures and arrays
GB1604220A (en) * 1978-04-24 1981-12-02 Parmeko Ltd Detection systems
CA1190970A (fr) * 1980-10-09 1985-07-23 Harold B. Williams Systeme antivol a deux frequences
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
EP0133317B1 (fr) 1988-09-21
MX156403A (es) 1988-08-18
ATE37453T1 (de) 1988-10-15
JPS60100295A (ja) 1985-06-04
EP0133317A2 (fr) 1985-02-20
BR8403801A (pt) 1985-07-09
AU3122084A (en) 1985-02-07
DE3474224D1 (en) 1988-10-27
AU573602B2 (en) 1988-06-16
EP0133317A3 (en) 1985-03-27
NZ209069A (en) 1988-03-30

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Legal Events

Date Code Title Description
MKEX Expiry