BE471729A - - Google Patents

Info

Publication number
BE471729A
BE471729A BE471729DA BE471729A BE 471729 A BE471729 A BE 471729A BE 471729D A BE471729D A BE 471729DA BE 471729 A BE471729 A BE 471729A
Authority
BE
Belgium
Application number
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.)
Publication of BE471729A publication Critical patent/BE471729A/xx

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)
BE471729D 1946-04-05 BE471729A (xx)

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
BE471729A true BE471729A (xx)

Family

ID=24646347

Family Applications (1)

Application Number Title Priority Date Filing Date
BE471729D BE471729A (xx) 1946-04-05

Country Status (4)

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

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
FR939913A (fr) 1948-11-29
GB631348A (en) 1949-11-01
US2440695A (en) 1948-05-04

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