GB479987A - Piezo-electric crystal devices - Google Patents

Piezo-electric crystal devices

Info

Publication number
GB479987A
GB479987A GB11684/37A GB1168437A GB479987A GB 479987 A GB479987 A GB 479987A GB 11684/37 A GB11684/37 A GB 11684/37A GB 1168437 A GB1168437 A GB 1168437A GB 479987 A GB479987 A GB 479987A
Authority
GB
United Kingdom
Prior art keywords
frequency
ratio
piezo
axis
width
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
GB11684/37A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB479987A publication Critical patent/GB479987A/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
    • H03H9/02023—Characteristics of piezoelectric layers, e.g. cutting angles consisting of quartz
    • 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)
  • Light Guides In General And Applications Therefor (AREA)
  • Glass Compositions (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
GB11684/37A 1936-06-12 1937-04-23 Piezo-electric crystal devices Expired GB479987A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US479987XA 1936-06-12 1936-06-12

Publications (1)

Publication Number Publication Date
GB479987A true GB479987A (en) 1938-02-15

Family

ID=21952214

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11684/37A Expired GB479987A (en) 1936-06-12 1937-04-23 Piezo-electric crystal devices

Country Status (4)

Country Link
DE (1) DE903351C (fi)
FR (1) FR822488A (fi)
GB (1) GB479987A (fi)
NL (1) NL51121C (fi)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410827A (en) * 1980-04-24 1983-10-18 Kabushiki Kaisha Suwa Seikosha Mode coupled notched tuning fork type quartz crystal resonator
GB2117968A (en) * 1982-03-16 1983-10-19 Seiko Instr & Electronics Gt-cut piezo-electric resonator
US4711047A (en) * 1985-01-24 1987-12-08 The State Of Israel, Ministry Of Defence, Israel Military Industries Signal flare cartridge

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051283B2 (ja) * 1975-09-10 1985-11-13 株式会社精工舎 Ｇｔカツト水晶振動子の周波数温度特性調整法
FR2363825A1 (fr) * 1976-09-07 1978-03-31 Seikosha Kk Oscillateur a quartz, et procede pour sa fabrication
US4447753A (en) * 1981-03-25 1984-05-08 Seiko Instruments & Electronics Ltd. Miniature GT-cut quartz resonator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4410827A (en) * 1980-04-24 1983-10-18 Kabushiki Kaisha Suwa Seikosha Mode coupled notched tuning fork type quartz crystal resonator
GB2117968A (en) * 1982-03-16 1983-10-19 Seiko Instr & Electronics Gt-cut piezo-electric resonator
US4711047A (en) * 1985-01-24 1987-12-08 The State Of Israel, Ministry Of Defence, Israel Military Industries Signal flare cartridge

Also Published As

Publication number Publication date
NL51121C (fi) 1941-10-15
FR822488A (fr) 1937-12-30
DE903351C (de) 1954-02-04

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