FR861340A - Electric transmission networks - Google Patents

Electric transmission networks

Info

Publication number
FR861340A
FR861340A FR861340DA FR861340A FR 861340 A FR861340 A FR 861340A FR 861340D A FR861340D A FR 861340DA FR 861340 A FR861340 A FR 861340A
Authority
FR
France
Prior art keywords
electric transmission
transmission networks
networks
electric
transmission
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
French (fr)
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 FR861340A publication Critical patent/FR861340A/en
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
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0095—Balance-unbalance or balance-balance networks using bulk acoustic wave devices
    • 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
    • H03H9/542—Filters comprising resonators of piezoelectric or electrostrictive material including passive elements

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Filters And Equalizers (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
FR861340D 1938-11-05 1939-11-04 Electric transmission networks Expired FR861340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US238991A US2216937A (en) 1938-11-05 1938-11-05 Wave filter

Publications (1)

Publication Number Publication Date
FR861340A true FR861340A (en) 1941-02-06

Family

ID=22900166

Family Applications (1)

Application Number Title Priority Date Filing Date
FR861340D Expired FR861340A (en) 1938-11-05 1939-11-04 Electric transmission networks

Country Status (3)

Country Link
US (1) US2216937A (en)
FR (1) FR861340A (en)
GB (1) GB533171A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE485845A (en) * 1947-11-21
US2929031A (en) * 1957-02-06 1960-03-15 Hermes Electronics Co Intermediate band width crystal filter
US2990525A (en) * 1957-12-12 1961-06-27 Bell Telephone Labor Inc Wave filter
JP3389911B2 (en) * 2000-02-07 2003-03-24 株式会社村田製作所 Surface acoustic wave filter, duplexer and communication device
JP2002152008A (en) * 2000-11-06 2002-05-24 Alps Electric Co Ltd Lattice type filter
WO2004066490A2 (en) * 2003-01-20 2004-08-05 Koninklijke Philips Electronics N.V. Resonator filter structure having equal resonance frequencies
FR2973970B1 (en) 2011-04-07 2013-04-12 Commissariat Energie Atomique DEVICE USING A FILTER BASED ON RESONATORS

Also Published As

Publication number Publication date
US2216937A (en) 1940-10-08
GB533171A (en) 1941-02-07

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