FR860997A - Piezoelectric systems - Google Patents

Piezoelectric systems

Info

Publication number
FR860997A
FR860997A FR860997DA FR860997A FR 860997 A FR860997 A FR 860997A FR 860997D A FR860997D A FR 860997DA FR 860997 A FR860997 A FR 860997A
Authority
FR
France
Prior art keywords
piezoelectric systems
piezoelectric
systems
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
Other languages
French (fr)
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR860997A publication Critical patent/FR860997A/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
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02015—Characteristics of piezoelectric layers, e.g. cutting angles

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
FR860997D 1938-10-19 1939-10-18 Piezoelectric systems Expired FR860997A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US235745A US2178146A (en) 1938-10-19 1938-10-19 Piezoelectric element

Publications (1)

Publication Number Publication Date
FR860997A true FR860997A (en) 1941-01-29

Family

ID=22886746

Family Applications (1)

Application Number Title Priority Date Filing Date
FR860997D Expired FR860997A (en) 1938-10-19 1939-10-18 Piezoelectric systems

Country Status (4)

Country Link
US (1) US2178146A (en)
CH (1) CH236116A (en)
FR (1) FR860997A (en)
GB (1) GB532925A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2450010A (en) * 1943-08-09 1948-09-28 Bell Telephone Labor Inc Piezoelectric crystal apparatus

Also Published As

Publication number Publication date
CH236116A (en) 1945-01-15
US2178146A (en) 1939-10-31
GB532925A (en) 1941-02-03

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