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)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Glass Compositions (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 (fr)
FR (1) FR822488A (fr)
GB (1) GB479987A (fr)
NL (1) NL51121C (fr)

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

Similar Documents

Publication Publication Date Title
GB479987A (en) Piezo-electric crystal devices
GB479637A (en) Improvements in or relating to piezoelectric crystals
GB539047A (en) Improvements in piezo-electric thickness-mode crystals
GB491277A (en) Improvements in or relating to piezo electric crystal elements
ES354924A1 (es) Dispositivo resonador de cristal.
GB464894A (en) Improvements in or relating to piezo-electric crystals
GB553050A (en) Piezoelectric crystal elements
GB1271679A (en) Quartz crystals for piezoelectric devices
GB436407A (en) Improvements in or relating to piezo-electric oscillating crystals
FR49457E (fr) Systèmes de transmission d'ondes à fréquence très élevée
GB548157A (en) Piezoelectric crystal apparatus
GB410429A (en) Improvements in or relating to piezo-electric devices
GB549594A (en) Piezoelectric crystal apparatus
GB607500A (en) Improvements in and relating to piezoelectric apparatus
GB475482A (en) Improvements relating to piezo-electric crystals
GB809424A (en) Improvements in or relating to overtone quartz crystals having low temperature coefficient
GB404185A (en) Improvements in piezo-electric oscillators or resonators
FR840537A (fr) Dispositif destiné à la réception d'oscillations à fréquence variable et à accord asservi
GB552835A (en) Piezoelectric crystal apparatus
GB394097A (en) Improvements in piezo-electric oscillators or resonators of tourmaline
CA359774A (fr) Appareil a couper en biais et a enrouler
GB289471A (en) Improvements relating to piezo-electric crystals
AU106681B2 (en) Improvements in or relating to high frequency resonant line apparatus and circuits arrangements incorporating the same
AU127086B2 (en) Improvements in or relating tothe manufacture of quartz crystal assemblies
GB1299056A (en) Piezoelectric extensional mode quartz crystal plate