FR948664A - Filtre d'ondes électriques - Google Patents

Filtre d'ondes électriques

Info

Publication number: FR948664A
Authority: FR; France
Prior art keywords: wave filter; electric wave; electric; filter; wave
Prior art date: 1943-03-30
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

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 Corp

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.)

1943-03-30

Filing date

1947-06-30

Publication date

1949-08-08

1947-06-30 Application filed by Western Electric Co Inc filed Critical Western Electric Co Inc

1949-08-08 Application granted granted Critical

1949-08-08 Publication of FR948664A publication Critical patent/FR948664A/fr

Status Expired legal-status Critical Current

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

1943
- 1943-03-30 US US481089A patent/US2373431A/en not_active Expired - Lifetime
1947
- 1947-06-09 CH CH272696D patent/CH272696A/fr unknown
- 1947-06-30 FR FR948664D patent/FR948664A/fr not_active Expired
- 1947-08-07 GB GB21775/47A patent/GB631772A/en not_active Expired

Also Published As

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

Publication	Publication Date	Title
FR948664A (fr)	1949-08-08	Filtre d'ondes électriques
FR939393A (fr)	1948-11-12	Perfectionnements aux filtres d'ondes électriques
FR1102055A (fr)	1955-10-17	Filtre d'ondes sélectif
FR939013A (fr)	1948-11-02	Boîtiers pour cristaux piézoélectriques
FR893649A (fr)	1944-08-08	Filtre pour gazogène
FR949926A (fr)	1949-09-13	Perfectionnements aux filtres d'ondes
FR948264A (fr)	1949-07-27	Filtre d'ondes
FR938529A (fr)	1948-10-18	Cristaux piézoélectriques
FR982405A (fr)	1951-06-11	Filtres d'ondes guidées
FR945651A (fr)	1949-05-11	Filtres d'ondes électriques
FR949524A (fr)	1949-09-01	Filtre à liquides
FR55753E (fr)	1952-09-05	Filtre épurateur pour gazogène
FR908725A (fr)	1946-04-17	Perfectionnements aux générateurs d'ondes modulées en fréquence
FR891643A (fr)	1944-03-13	Filtre épurateur pour gazogène
FR927268A (fr)	1947-10-24	Atténuateurs d'ondes électromagnétiques
FR939890A (fr)	1948-11-26	Filtre à air perfectionné
FR990710A (fr)	1951-09-25	Filtre pour gazogènes
FR907678A (fr)	1946-03-19	Filtre
FR912142A (fr)	1946-07-31	Filtre
FR982406A (fr)	1951-06-11	Transformateur d'ondes guidées
FR908312A (fr)	1946-04-05	Filtre passe-bande pour ondes ultra-courtes
FR52805E (fr)	1945-08-10	Filtre enveloppé hermétiquement
FR52929E (fr)	1945-08-24	Filtre enveloppé hermétiquement
FR904790A (fr)	1945-11-15	Robinet d'arrêt
FR992543A (fr)	1951-10-19	Filtre de sécurité