FR869044A - éléments électro-mécaniques vibrants - Google Patents

éléments électro-mécaniques vibrants

Info

Publication number
FR869044A
FR869044A FR869044DA FR869044A FR 869044 A FR869044 A FR 869044A FR 869044D A FR869044D A FR 869044DA FR 869044 A FR869044 A FR 869044A
Authority
FR
France
Prior art keywords
electro
vibrating elements
mechanical vibrating
mechanical
elements
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
English (en)
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 FR869044A publication Critical patent/FR869044A/fr
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 elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02062—Details relating to the vibration mode
    • H03H9/0207—Details relating to the vibration mode the vibration mode being harmonic
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/56—Monolithic crystal filters

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
FR869044D 1939-09-30 1941-01-07 éléments électro-mécaniques vibrants Expired FR869044A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US297259A US2240309A (en) 1939-09-30 1939-09-30 Piezoelectric crystal apparatus

Publications (1)

Publication Number Publication Date
FR869044A true FR869044A (fr) 1942-01-22

Family

ID=23145538

Family Applications (1)

Application Number Title Priority Date Filing Date
FR869044D Expired FR869044A (fr) 1939-09-30 1941-01-07 éléments électro-mécaniques vibrants

Country Status (2)

Country Link
US (1) US2240309A (fr)
FR (1) FR869044A (fr)

Also Published As

Publication number Publication date
US2240309A (en) 1941-04-29

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