FR861831A - Filtres d'ondes électriques - Google Patents

Filtres d'ondes électriques

Info

Publication number
FR861831A
FR861831A FR861831DA FR861831A FR 861831 A FR861831 A FR 861831A FR 861831D A FR861831D A FR 861831DA FR 861831 A FR861831 A FR 861831A
Authority
FR
France
Prior art keywords
electric wave
wave filters
filters
electric
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR861831A publication Critical patent/FR861831A/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 devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/545—Filters comprising resonators of piezoelectric or electrostrictive material including active elements

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Filters And Equalizers (AREA)
FR861831D 1939-08-08 1939-08-08 Filtres d'ondes électriques Expired FR861831A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR861831T 1939-08-08

Publications (1)

Publication Number Publication Date
FR861831A true FR861831A (fr) 1941-02-18

Family

ID=9342393

Family Applications (1)

Application Number Title Priority Date Filing Date
FR861831D Expired FR861831A (fr) 1939-08-08 1939-08-08 Filtres d'ondes électriques

Country Status (3)

Country Link
US (1) US2640879A (fr)
FR (1) FR861831A (fr)
GB (1) GB537803A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179906A (en) * 1965-04-20 By-pass netwoems when
FR861831A (fr) * 1939-08-08 1941-02-18 Materiel Telephonique Filtres d'ondes électriques
US3437848A (en) * 1964-09-24 1969-04-08 Telefunken Patent Piezoelectric plate filter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1438828A (en) * 1920-03-29 1922-12-12 Harry W Houck Method and apparatus for selectively transferring electrical oscillatory energy
US1732710A (en) * 1923-09-20 1929-10-22 Westinghouse Electric & Mfg Co Wireless receiving system
FR796611A (fr) * 1935-01-07 1936-04-11 Materiel Telephonique Perfectionnements aux filtres d'ondes électriques
US2204702A (en) * 1936-04-29 1940-06-18 Rca Corp Piezoelectric crystal filter with inductive shunt
US2248776A (en) * 1938-07-28 1941-07-08 Bell Telephone Labor Inc Wave filter
FR861831A (fr) * 1939-08-08 1941-02-18 Materiel Telephonique Filtres d'ondes électriques

Also Published As

Publication number Publication date
GB537803A (en) 1941-07-07
US2640879A (en) 1953-06-02

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