FR948664A - Filtre d'ondes électriques - Google Patents

Filtre d'ondes électriques

Info

Publication number
FR948664A
FR948664A FR948664DA FR948664A FR 948664 A FR948664 A FR 948664A FR 948664D A FR948664D A FR 948664DA FR 948664 A FR948664 A FR 948664A
Authority
FR
France
Prior art keywords
wave filter
electric wave
electric
filter
wave
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
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.)
AT&T Inc
Original Assignee
Western Electric Co Inc
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 Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR948664A publication Critical patent/FR948664A/fr
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 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)
FR948664D 1943-03-30 1947-06-30 Filtre d'ondes électriques Expired FR948664A (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
FR948664A true FR948664A (fr) 1949-08-08

Family

ID=23910550

Family Applications (1)

Application Number Title Priority Date Filing Date
FR948664D Expired FR948664A (fr) 1943-03-30 1947-06-30 Filtre d'ondes électriques

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
WO2014172617A1 (fr) * 2013-04-18 2014-10-23 Cornell University Actionneur piézoélectrique monolithique, platine et procédé de fabrication associé

Also Published As

Publication number Publication date
CH272696A (fr) 1950-12-31
US2373431A (en) 1945-04-10
GB631772A (en) 1949-11-09

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