FR939913A - Piezoelectric crystal apparatus - Google Patents

Piezoelectric crystal apparatus

Info

Publication number
FR939913A
FR939913A FR939913DA FR939913A FR 939913 A FR939913 A FR 939913A FR 939913D A FR939913D A FR 939913DA FR 939913 A FR939913 A FR 939913A
Authority
FR
France
Prior art keywords
piezoelectric crystal
crystal apparatus
piezoelectric
crystal
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.)
AT&T Corp
Original Assignee
Western Electric Co 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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR939913A publication Critical patent/FR939913A/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
    • 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
    • H03H9/02157—Dimensional parameters, e.g. ratio between two dimension parameters, length, width or thickness

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
FR939913D 1946-04-05 1947-01-23 Piezoelectric crystal apparatus Expired FR939913A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US659678A US2440695A (en) 1946-04-05 1946-04-05 Piezoelectric crystal apparatus

Publications (1)

Publication Number Publication Date
FR939913A true FR939913A (en) 1948-11-29

Family

ID=24646347

Family Applications (1)

Application Number Title Priority Date Filing Date
FR939913D Expired FR939913A (en) 1946-04-05 1947-01-23 Piezoelectric crystal apparatus

Country Status (4)

Country Link
US (1) US2440695A (en)
BE (1) BE471729A (en)
FR (1) FR939913A (en)
GB (1) GB631348A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2460520A (en) * 1946-02-09 1949-02-01 Bell Telephone Labor Inc Piezoelectric crystal apparatus
US2493145A (en) * 1948-04-29 1950-01-03 Brush Dev Co Piezoelectric crystal apparatus
US2931924A (en) * 1958-06-25 1960-04-05 Philip A Simpson Quartz oscillator unit for operation at low temperatures

Also Published As

Publication number Publication date
BE471729A (en)
US2440695A (en) 1948-05-04
GB631348A (en) 1949-11-01

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