CH225444A - Piezoelectric crystal apparatus. - Google Patents

Piezoelectric crystal apparatus.

Info

Publication number
CH225444A
CH225444A CH225444DA CH225444A CH 225444 A CH225444 A CH 225444A CH 225444D A CH225444D A CH 225444DA CH 225444 A CH225444 A CH 225444A
Authority
CH
Switzerland
Prior art keywords
piezoelectric crystal
crystal apparatus
piezoelectric
crystal
Prior art date
Application number
Other languages
French (fr)
Inventor
Bell Telephone Manufac Anonyme
Original Assignee
Bell Telephone Mfg
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 Bell Telephone Mfg filed Critical Bell Telephone Mfg
Publication of CH225444A publication Critical patent/CH225444A/en

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
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/56—Monolithic crystal filters
    • 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
    • H03H9/02062—Details relating to the vibration mode
    • H03H9/0207—Details relating to the vibration mode the vibration mode being harmonic
    • 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
    • H03H9/02—Details
    • H03H9/05—Holders; Supports
    • H03H9/09—Elastic or damping supports
    • 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
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • H03H9/19—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator consisting of quartz

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)
CH225444D 1939-06-09 1940-06-19 Piezoelectric crystal apparatus. CH225444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US278237A US2306909A (en) 1939-06-09 1939-06-09 Piezoelectric crystal apparatus

Publications (1)

Publication Number Publication Date
CH225444A true CH225444A (en) 1943-01-31

Family

ID=23064215

Family Applications (1)

Application Number Title Priority Date Filing Date
CH225444D CH225444A (en) 1939-06-09 1940-06-19 Piezoelectric crystal apparatus.

Country Status (3)

Country Link
US (1) US2306909A (en)
CH (1) CH225444A (en)
FR (1) FR866095A (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2574257A (en) * 1947-01-11 1951-11-06 Cambridge Thermionic Corp Method for manufacturing piezoelectric crystals free of conflicting modes of vibration
US2799789A (en) * 1949-04-06 1957-07-16 John M Wolfskill Piezoelectric crystal apparatus and method of making the same
US2771561A (en) * 1952-03-17 1956-11-20 Pye Ltd Quartz crystal units
US2886787A (en) * 1953-07-30 1959-05-12 Donald E Johnson Piezoelectric device
US2911484A (en) * 1954-06-28 1959-11-03 Gen Electric Electro-acoustic transducer
US3396327A (en) * 1961-12-27 1968-08-06 Toyotsushinki Kabushiki Kaisha Thickness shear vibration type, crystal electromechanical filter
GB1104383A (en) * 1964-05-30 1968-02-28 Matsushita Electric Ind Co Ltd Piezoelectric ceramic resonator devices
GB1401042A (en) * 1972-05-30 1975-07-16 Suisse Horlogerie Quartz crystal resonator
US3792294A (en) * 1972-10-19 1974-02-12 Bell Telephone Labor Inc Rectangular at-cut crystal plate
US4071797A (en) * 1976-01-20 1978-01-31 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Quartz piezo-electric element vibrating in a coupled mode
DE2703335A1 (en) * 1976-01-29 1977-08-04 Seiko Instr & Electronics PIEZOELECTRIC VIBRATION WITH THICK SHEAR VIBRATION
JPS5291673A (en) * 1976-01-29 1977-08-02 Seiko Instr & Electronics Ltd Thickness sliding vibrator
DE2641571B1 (en) * 1976-09-15 1977-06-08 Siemens Ag THICK SHEAR VIBRATORS USED AS OBSERVE QUARTZ
US4076987A (en) * 1976-12-10 1978-02-28 Societe Suisse Pour L'industrie Horlogere Management Services S.A. Multiple resonator or filter vibrating in a coupled mode
JPS5479581A (en) * 1977-12-07 1979-06-25 Seiko Instr & Electronics Ltd Thickness-width slide crystal vibrator
FR2426338A1 (en) * 1978-05-19 1979-12-14 Seiko Instr & Electronics RECTANGULAR QUARTZ RESONATOR IN AT SECTION
JPS5530284A (en) * 1978-08-25 1980-03-04 Seiko Instr & Electronics Ltd Thickness sliding flection crystal vibrator
JPS5546633A (en) * 1978-09-28 1980-04-01 Seiko Instr & Electronics Ltd Thickness-sliding inflection crystal vibrator
JPS5912584Y2 (en) * 1979-09-11 1984-04-16 東京電波株式会社 crystal temperature sensitive transducer
US4604543A (en) * 1984-11-29 1986-08-05 Hitachi, Ltd. Multi-element ultrasonic transducer
US7077857B1 (en) 2002-02-27 2006-07-18 Crosby Advanced Medical Systems, Inc. Pulse Cam
US9987185B1 (en) 2002-02-27 2018-06-05 CAMS Medical Instruments, Inc. Transducer devices, apparatus, systems and methods of operation
US7883534B1 (en) 2002-02-27 2011-02-08 CAMS Medical Instruments, Inc. Personal tuner
US9463332B2 (en) 2002-02-27 2016-10-11 CAMS Medical Instruments, Inc. Personal tuner with biosensor and bioscanner

Also Published As

Publication number Publication date
FR866095A (en) 1941-06-16
US2306909A (en) 1942-12-29

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