CA958086A - Ligne a retard ultrasonique continument variable - Google Patents

Ligne a retard ultrasonique continument variable

Info

Publication number
CA958086A
CA958086A CA156,251*7A CA156251A CA958086A CA 958086 A CA958086 A CA 958086A CA 156251 A CA156251 A CA 156251A CA 958086 A CA958086 A CA 958086A
Authority
CA
Canada
Prior art keywords
ultrasonique
continument
ligne
retard
variable
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
CA156,251*7A
Other languages
English (en)
Other versions
CA156251S (en
Inventor
Andre Defebvre
Jean-Francois Pouliquen
Gerard Leman
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.)
ETAT FRANCAIS DIRECTION DES RECHERCHES ET MOYENS D'ESSAIS
Original Assignee
ETAT FRANCAIS DIRECTION DES RECHERCHES ET MOYENS D'ESSAIS
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 ETAT FRANCAIS DIRECTION DES RECHERCHES ET MOYENS D'ESSAIS filed Critical ETAT FRANCAIS DIRECTION DES RECHERCHES ET MOYENS D'ESSAIS
Application granted granted Critical
Publication of CA958086A publication Critical patent/CA958086A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/30—Time-delay networks
    • H03H9/42—Time-delay networks using surface acoustic waves
    • H03H9/423—Time-delay networks using surface acoustic waves with adjustable delay time

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
CA156,251*7A 1971-11-10 1972-11-09 Ligne a retard ultrasonique continument variable Expired CA958086A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7140292A FR2170291A5 (de) 1971-11-10 1971-11-10
FR7238716A FR2205253A6 (de) 1971-11-10 1972-10-31

Publications (1)

Publication Number Publication Date
CA958086A true CA958086A (en) 1974-11-19

Family

ID=26216712

Family Applications (1)

Application Number Title Priority Date Filing Date
CA156,251*7A Expired CA958086A (en) 1971-11-10 1972-11-09 Ligne a retard ultrasonique continument variable

Country Status (7)

Country Link
US (1) US3787786A (de)
CA (1) CA958086A (de)
DE (1) DE2254903A1 (de)
FR (2) FR2170291A5 (de)
GB (1) GB1412264A (de)
NL (1) NL7215205A (de)
SE (1) SE389246B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037175A (en) * 1974-01-02 1977-07-19 University Of Illinois Foundation Variable delay device
FR2266395B1 (de) * 1974-03-26 1980-10-31 Thomson Csf
US9099982B2 (en) * 2012-01-25 2015-08-04 International Business Machines Corporation Method of manufacturing switching filters and design structures

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103640A (en) * 1961-06-19 1963-09-10 Lab For Electronics Inc Variable ultrasonic delay line
US3360749A (en) * 1964-12-09 1967-12-26 Bell Telephone Labor Inc Elastic wave delay device
US3436688A (en) * 1966-05-24 1969-04-01 Lab For Electronics Inc Variable delay line with movable electrode
US3676721A (en) * 1970-08-28 1972-07-11 Iit Res Inst Composite surface-wave transducer

Also Published As

Publication number Publication date
GB1412264A (en) 1975-10-29
DE2254903A1 (de) 1973-05-17
FR2170291A5 (de) 1973-09-14
FR2205253A6 (de) 1974-05-24
NL7215205A (de) 1973-05-14
SE389246B (sv) 1976-10-25
US3787786A (en) 1974-01-22

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