GB631348A - Improvements in piezoelectric crystal elements and apparatus - Google Patents

Improvements in piezoelectric crystal elements and apparatus

Info

Publication number
GB631348A
GB631348A GB7804/47A GB780447A GB631348A GB 631348 A GB631348 A GB 631348A GB 7804/47 A GB7804/47 A GB 7804/47A GB 780447 A GB780447 A GB 780447A GB 631348 A GB631348 A GB 631348A
Authority
GB
United Kingdom
Prior art keywords
axis
plates
piezoelectric crystal
crystal elements
parallel
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
GB7804/47A
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.)
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
Publication of GB631348A publication Critical patent/GB631348A/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 elements; 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 elements; 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)
GB7804/47A 1946-04-05 1947-03-21 Improvements in piezoelectric crystal elements and apparatus Expired GB631348A (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
GB631348A true GB631348A (en) 1949-11-01

Family

ID=24646347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7804/47A Expired GB631348A (en) 1946-04-05 1947-03-21 Improvements in piezoelectric crystal elements and apparatus

Country Status (4)

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

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
US2440695A (en) 1948-05-04
BE471729A (enrdf_load_stackoverflow)
FR939913A (fr) 1948-11-29

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