CH272696A - Filtre d'ondes piézoélectrique à bande passante étroite. - Google Patents

Filtre d'ondes piézoélectrique à bande passante étroite.

Info

Publication number
CH272696A
CH272696A CH272696DA CH272696A CH 272696 A CH272696 A CH 272696A CH 272696D A CH272696D A CH 272696DA CH 272696 A CH272696 A CH 272696A
Authority
CH
Switzerland
Prior art keywords
wave filter
narrow bandwidth
piezoelectric wave
bandwidth piezoelectric
narrow
Prior art date
Application number
Other languages
English (en)
Inventor
Incorporated Western E Company
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of CH272696A publication Critical patent/CH272696A/fr

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/60—Electric coupling means therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/05—Holders or supports
    • H03H9/10—Mounting in enclosures
    • H03H9/1007—Mounting in enclosures for bulk acoustic wave [BAW] devices
    • H03H9/1014—Mounting in enclosures for bulk acoustic wave [BAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the BAW device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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 elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/56—Monolithic crystal filters
    • H03H9/566—Electric coupling means therefor

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)
CH272696D 1943-03-30 1947-06-09 Filtre d'ondes piézoélectrique à bande passante étroite. CH272696A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US481089A US2373431A (en) 1943-03-30 1943-03-30 Electric wave filter

Publications (1)

Publication Number Publication Date
CH272696A true CH272696A (fr) 1950-12-31

Family

ID=23910550

Family Applications (1)

Application Number Title Priority Date Filing Date
CH272696D CH272696A (fr) 1943-03-30 1947-06-09 Filtre d'ondes piézoélectrique à bande passante étroite.

Country Status (4)

Country Link
US (1) US2373431A (fr)
CH (1) CH272696A (fr)
FR (1) FR948664A (fr)
GB (1) GB631772A (fr)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524781A (en) * 1945-06-18 1950-10-10 Standard Telephones Cables Ltd Filter
US2988714A (en) * 1957-09-12 1961-06-13 Gen Electric Piezoelectric filter network
US2965861A (en) * 1957-09-18 1960-12-20 Collins Radio Co Thickness-shear-mode mechanical filter
NL239635A (fr) * 1958-05-30
US2943278A (en) * 1958-11-17 1960-06-28 Oskar E Mattiat Piezoelectric filter transformer
US3018451A (en) * 1958-12-04 1962-01-23 Mattiat Oskar Piezoelectric resonator with oppositely poled ring and spot
DE1209336B (de) * 1960-12-01 1966-01-20 Bosch Arma Corp Als randfreie Kreisscheibe ausgebildeter Biegeschwingungswandler zur Erzeugung von Schallschwingungen
US3396327A (en) * 1961-12-27 1968-08-06 Toyotsushinki Kabushiki Kaisha Thickness shear vibration type, crystal electromechanical filter
US3437848A (en) * 1964-09-24 1969-04-08 Telefunken Patent Piezoelectric plate filter
US3585537A (en) * 1969-02-10 1971-06-15 Bell Telephone Labor Inc Electric wave filters
US3633134A (en) * 1969-10-10 1972-01-04 Motorola Inc Crystal band pass filter circuit
US3656180A (en) * 1970-08-12 1972-04-11 Bell Telephone Labor Inc Crystal filter
DE2045152C3 (de) * 1970-09-11 1975-02-06 Braun Ag, 6000 Frankfurt Schwingmotor mit bilaminaren Biegeschwingern für elektrisch angetriebene Trockenrasierapparate
US3739304A (en) * 1971-09-27 1973-06-12 Bell Telephone Labor Inc Resonator interconnections in monolithic crystal filters
JPS4944648A (fr) * 1972-08-31 1974-04-26
US3792294A (en) * 1972-10-19 1974-02-12 Bell Telephone Labor Inc Rectangular at-cut crystal plate
JPS5249618Y2 (fr) * 1972-10-21 1977-11-11
JPS539917B2 (fr) * 1973-05-02 1978-04-10 Suwa Seikosha Kk
US3944951A (en) * 1974-11-21 1976-03-16 Bell Telephone Laboratories, Incorporated Monolithic crystal filter
US10158063B2 (en) * 2013-04-18 2018-12-18 Cornell University Monolithic PZT actuator, stage, and method for making

Also Published As

Publication number Publication date
FR948664A (fr) 1949-08-08
US2373431A (en) 1945-04-10
GB631772A (en) 1949-11-09

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