CA2002179C - Dispositifs a ondes acoustiques de surface - Google Patents

Dispositifs a ondes acoustiques de surface Download PDF

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Publication number
CA2002179C
CA2002179C CA 2002179 CA2002179A CA2002179C CA 2002179 C CA2002179 C CA 2002179C CA 2002179 CA2002179 CA 2002179 CA 2002179 A CA2002179 A CA 2002179A CA 2002179 C CA2002179 C CA 2002179C
Authority
CA
Canada
Prior art keywords
transponder
acoustic wave
surface acoustic
fingers
transducer
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 - Fee Related
Application number
CA 2002179
Other languages
English (en)
Other versions
CA2002179A1 (fr
Inventor
Richard Vaughan
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2002179A1 publication Critical patent/CA2002179A1/fr
Application granted granted Critical
Publication of CA2002179C publication Critical patent/CA2002179C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
    • G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
    • G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
    • G06K19/0672—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with resonating marks
    • G06K19/0675—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with resonating marks the resonating marks being of the surface acoustic wave [SAW] kind
    • 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
    • G01S13/75—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors
    • G01S13/751—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal
    • G01S13/755—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems using transponders powered from received waves, e.g. using passive transponders, or using passive reflectors wherein the responder or reflector radiates a coded signal using delay lines, e.g. acoustic delay lines
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/08—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
CA 2002179 1988-11-04 1989-11-03 Dispositifs a ondes acoustiques de surface Expired - Fee Related CA2002179C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPJ1305 1988-11-04
AUPJ130588 1988-11-04

Publications (2)

Publication Number Publication Date
CA2002179A1 CA2002179A1 (fr) 1990-05-04
CA2002179C true CA2002179C (fr) 2000-05-23

Family

ID=3773485

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2002179 Expired - Fee Related CA2002179C (fr) 1988-11-04 1989-11-03 Dispositifs a ondes acoustiques de surface

Country Status (3)

Country Link
CA (1) CA2002179C (fr)
NZ (1) NZ231251A (fr)
WO (1) WO1990005409A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6966493B2 (en) * 2001-12-18 2005-11-22 Rf Saw Components, Incorporated Surface acoustic wave identification tag having enhanced data content and methods of operation and manufacture thereof
WO2005029698A2 (fr) 2003-09-15 2005-03-31 Rf Saw Components, Incorporated Procede de discrimination d'etiquettes d'identification a ondes acoustiques de surface
FR3030154B1 (fr) * 2014-12-10 2018-11-23 Sasu Frec'n'sys Dispositif de capteur a ondes elastiques de surface a reponse electrique stable
FR3108192A1 (fr) * 2020-03-12 2021-09-17 Saint-Gobain Glass France Vitrage comprenant un element vitre comportant un dispositif de communication configure pour fonctionner par radio-frequences et par ondes acoustiques de surface

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3870975A (en) * 1974-03-22 1975-03-11 Hazeltine Corp Surface wave transducer with reduced reflection coefficient
JPS5566118A (en) * 1978-11-13 1980-05-19 Matsushita Electric Ind Co Ltd Elastic surface wave device
JPS5937605B2 (ja) * 1979-09-25 1984-09-11 富士通株式会社 弾性表面波素子
JPS56164614A (en) * 1980-05-21 1981-12-17 Japan Radio Co Ltd Elastic surface wave device
US4410823A (en) * 1981-11-13 1983-10-18 Zenith Radio Corporation Surface acoustic wave device employing reflectors
JPS60186109A (ja) * 1984-03-06 1985-09-21 Toshiba Corp 弾性表面波共振子
US4535265A (en) * 1984-05-17 1985-08-13 Kabushiki Kaisha Toshiba Surface acoustic wave transducer with internal acoustic reflection
AU564844B2 (en) * 1984-10-09 1987-08-27 X-Cyte Inc. Saw transponder
AU565454B2 (en) * 1984-10-09 1987-09-17 X-Cyte Inc. Saw transponder
US4616197A (en) * 1985-12-05 1986-10-07 R. F. Monolithics, Inc. Resonator

Also Published As

Publication number Publication date
NZ231251A (en) 1993-03-26
CA2002179A1 (fr) 1990-05-04
WO1990005409A1 (fr) 1990-05-17

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