BE420034A - - Google Patents

Info

Publication number
BE420034A
BE420034A BE420034DA BE420034A BE 420034 A BE420034 A BE 420034A BE 420034D A BE420034D A BE 420034DA BE 420034 A BE420034 A BE 420034A
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 BE420034A publication Critical patent/BE420034A/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
    • 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 piezo-electric or electrostrictive material
    • H03H9/542—Filters comprising resonators of piezo-electric 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 piezo-electric or electrostrictive material
    • H03H9/56—Monolithic crystal filters
BE420034D 1936-02-21 BE420034A (ja)

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
BE420034A true BE420034A (ja)

Family

ID=22059823

Family Applications (1)

Application Number Title Priority Date Filing Date
BE420034D BE420034A (ja) 1936-02-21

Country Status (6)

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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE759014C (de) * 1939-08-30 1953-03-23 Siemens & Halske A G Piezoelektrischer UEbertragerkristall
DE767884C (de) * 1941-04-03 1954-05-31 Telefunken Gmbh Filter, Phasendrehglied od. dgl. der elektrischen Nachrichtentechnik
DE763329C (de) * 1941-04-29 1954-10-18 Siemens & Halske A G Biegungsschwingungen ausfuehrender Quarzkristall
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 (ja) * 1976-10-22 1983-11-17 セイコーインスツルメンツ株式会社 音叉型水晶振動子
JPS55112017A (en) * 1979-02-20 1980-08-29 Seiko Epson Corp Electrode of tuning fork type crystal oscillator
EP0096653B1 (en) * 1982-06-04 1989-04-12 Statek Corparation Extensional mode piezoelectric microresonator
JP3858639B2 (ja) * 2000-08-31 2006-12-20 株式会社村田製作所 圧電共振子および電子機器

Also Published As

Publication number Publication date
GB479979A (en) 1938-02-15
US2185599A (en) 1940-01-02
CH202081A (de) 1938-12-31
FR820481A (fr) 1937-11-12
NL62574C (ja)

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