FR772135A - Perfectionnements aux filtres d'ondes électriques - Google Patents

Perfectionnements aux filtres d'ondes électriques

Info

Publication number
FR772135A
FR772135A FR772135DA FR772135A FR 772135 A FR772135 A FR 772135A FR 772135D A FR772135D A FR 772135DA FR 772135 A FR772135 A FR 772135A
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 FR772135A publication Critical patent/FR772135A/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
    • H03H9/542—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
    • H03H9/0023—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output
    • H03H9/0095—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using bulk acoustic wave devices

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
FR772135D 1933-06-23 1934-03-26 Perfectionnements aux filtres d'ondes électriques Expired FR772135A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US677244A US2037171A (en) 1933-06-23 1933-06-23 Wave filter

Publications (1)

Publication Number Publication Date
FR772135A true FR772135A (fr) 1934-10-23

Family

ID=24717919

Family Applications (1)

Application Number Title Priority Date Filing Date
FR772135D Expired FR772135A (fr) 1933-06-23 1934-03-26 Perfectionnements aux filtres d'ondes électriques

Country Status (3)

Country Link
US (1) US2037171A (fr)
DE (1) DE687088C (fr)
FR (1) FR772135A (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438392A (en) * 1944-05-06 1948-03-23 Rca Corp Oscillation generation control
NL77931C (fr) * 1946-04-12
US2980872A (en) * 1958-06-13 1961-04-18 Hughes Aircraft Co Bandpass filters
US3396327A (en) * 1961-12-27 1968-08-06 Toyotsushinki Kabushiki Kaisha Thickness shear vibration type, crystal electromechanical filter
EP2533422A3 (fr) 2010-01-28 2013-07-17 Murata Manufacturing Co., Ltd. Filtre accordable
KR101719325B1 (ko) * 2010-07-19 2017-03-23 삼성전자주식회사 Ｂａｗｒ을 이용한 밸런스 구조의 ｒｆ 듀플렉서 및 ｒｆ 필터

Also Published As

Publication number Publication date
US2037171A (en) 1936-04-14
DE687088C (de) 1940-01-22

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