FR820481A - Piezoelectric devices - Google Patents

Piezoelectric devices

Info

Publication number
FR820481A
FR820481A FR820481DA FR820481A FR 820481 A FR820481 A FR 820481A FR 820481D A FR820481D A FR 820481DA FR 820481 A FR820481 A FR 820481A
Authority
FR
France
Prior art keywords
piezoelectric devices
piezoelectric
devices
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR820481A publication Critical patent/FR820481A/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
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0095—Balance-unbalance or balance-balance networks using bulk acoustic wave devices
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/21—Crystal tuning forks
    • H03H9/215—Crystal tuning forks 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
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/542—Filters comprising resonators of piezoelectric or electrostrictive material including passive elements
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/56—Monolithic crystal filters

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
FR820481D 1936-02-21 1937-02-20 Piezoelectric devices Expired FR820481A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US65022A US2185599A (en) 1936-02-21 1936-02-21 Piezoelectric apparatus

Publications (1)

Publication Number Publication Date
FR820481A true FR820481A (en) 1937-11-12

Family

ID=22059823

Family Applications (1)

Application Number Title Priority Date Filing Date
FR820481D Expired FR820481A (en) 1936-02-21 1937-02-20 Piezoelectric devices

Country Status (6)

Country Link
US (1) US2185599A (en)
BE (1) BE420034A (en)
CH (1) CH202081A (en)
FR (1) FR820481A (en)
GB (1) GB479979A (en)
NL (1) NL62574C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767884C (en) * 1941-04-03 1954-05-31 Telefunken Gmbh Filters, phase rotator or the like of electrical communications engineering

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE759014C (en) * 1939-08-30 1953-03-23 Siemens & Halske A G Piezoelectric transmitter crystal
DE763329C (en) * 1941-04-29 1954-10-18 Siemens & Halske A G Quartz crystal executing bending vibrations
US2666196A (en) * 1949-06-07 1954-01-12 Bell Telephone Labor Inc Frequency station calling system using bifurcated piezoelectric elements
US2988728A (en) * 1953-07-06 1961-06-13 United Geophysical Corp Piezoelectric hydrophone
US2990525A (en) * 1957-12-12 1961-06-27 Bell Telephone Labor Inc Wave filter
US3582836A (en) * 1969-07-01 1971-06-01 Damon Eng Inc Monolithic crystal filters
JPS5851687B2 (en) * 1976-10-22 1983-11-17 セイコーインスツルメンツ株式会社 Tuning fork crystal oscillator
JPS55112017A (en) * 1979-02-20 1980-08-29 Seiko Epson Corp Electrode of tuning fork type crystal oscillator
DE3379623D1 (en) * 1982-06-04 1989-05-18 Statek Corp Extensional mode piezoelectric microresonator
JP3858639B2 (en) * 2000-08-31 2006-12-20 株式会社村田製作所 Piezoelectric resonator and electronic device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767884C (en) * 1941-04-03 1954-05-31 Telefunken Gmbh Filters, phase rotator or the like of electrical communications engineering

Also Published As

Publication number Publication date
US2185599A (en) 1940-01-02
NL62574C (en)
BE420034A (en)
GB479979A (en) 1938-02-15
CH202081A (en) 1938-12-31

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