FR2396456A1 - Perfectionnements aux filtres electromecaniques - Google Patents

Perfectionnements aux filtres electromecaniques

Info

Publication number
FR2396456A1
FR2396456A1 FR7720396A FR7720396A FR2396456A1 FR 2396456 A1 FR2396456 A1 FR 2396456A1 FR 7720396 A FR7720396 A FR 7720396A FR 7720396 A FR7720396 A FR 7720396A FR 2396456 A1 FR2396456 A1 FR 2396456A1
Authority
FR
France
Prior art keywords
resonators
rank
resonator
wave
hand
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.)
Granted
Application number
FR7720396A
Other languages
English (en)
Other versions
FR2396456B1 (fr
Inventor
Philippe Marie Allemandou
Didier Marcel Beaudet
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.)
Societe Anonyme de Telecommunications SAT
Original Assignee
Societe Anonyme de Telecommunications SAT
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 Societe Anonyme de Telecommunications SAT filed Critical Societe Anonyme de Telecommunications SAT
Priority to FR7720396A priority Critical patent/FR2396456A1/fr
Priority to US05/918,797 priority patent/US4184132A/en
Priority to DE2828465A priority patent/DE2828465C2/de
Publication of FR2396456A1 publication Critical patent/FR2396456A1/fr
Application granted granted Critical
Publication of FR2396456B1 publication Critical patent/FR2396456B1/fr
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46Filters
    • H03H9/48Coupling means therefor
    • H03H9/50Mechanical coupling means

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

Filtre électromécanique passe-bande, comprenant un ensemble mécanique vibrant en mode longitudinal monté entre deux transducteurs électromécaniques, ledit ensemble comprenant une pluralité de résonateurs demi-onde montés en cascade et des coupleurs reliant les résonateurs consécutifs, les résonateurs étant répartis en deux groupes dont l'un comprend les résonateurs de rang impair et l'autre les résonateurs de rang pair, le filtre comprenant en outre au moins un coupleur de pontage reliant un résonateur de rang k à un résonateur de rang k + (2p + 1) (p entier positif non nul). Ledit coupleur de pontage a ses extrémités fixées à une certaine distance des faces terminales des résonateurs, au moins le coupleur de pontage, d'une part, ou les coupleurs situés entre le résonateur de rang k et celui de rang k + (2p + 1) d'autre part, ayant une longueur respectivement différente de trois-quarts d'onde ou différente d'un quart-d'onde.
FR7720396A 1977-07-01 1977-07-01 Perfectionnements aux filtres electromecaniques Granted FR2396456A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7720396A FR2396456A1 (fr) 1977-07-01 1977-07-01 Perfectionnements aux filtres electromecaniques
US05/918,797 US4184132A (en) 1977-07-01 1978-06-26 Electromechanical filters
DE2828465A DE2828465C2 (de) 1977-07-01 1978-06-29 Elektromechanisches Bandpaßfilter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7720396A FR2396456A1 (fr) 1977-07-01 1977-07-01 Perfectionnements aux filtres electromecaniques

Publications (2)

Publication Number Publication Date
FR2396456A1 true FR2396456A1 (fr) 1979-01-26
FR2396456B1 FR2396456B1 (fr) 1982-01-08

Family

ID=9192898

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7720396A Granted FR2396456A1 (fr) 1977-07-01 1977-07-01 Perfectionnements aux filtres electromecaniques

Country Status (3)

Country Link
US (1) US4184132A (fr)
DE (1) DE2828465C2 (fr)
FR (1) FR2396456A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1257993B (de) * 1961-02-28 1968-01-04 Telefunken Patent Mechanisches Frequenzfilter
DE2142332C2 (de) * 1971-08-24 1983-07-14 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Mechanisches Filter und Verfahren zur Herstellung des Filters
DE2453122A1 (de) * 1974-11-08 1976-05-20 Siemens Ag Filter fuer elektrische schwingungen
FR2304217A1 (fr) * 1975-03-13 1976-10-08 Cit Alcatel Filtre mecanique
FR2350732A1 (fr) * 1976-05-05 1977-12-02 Telecommunications Sa Perfectionnements aux filtres electromecaniques passe-bande

Also Published As

Publication number Publication date
FR2396456B1 (fr) 1982-01-08
DE2828465A1 (de) 1979-01-11
US4184132A (en) 1980-01-15
DE2828465C2 (de) 1984-07-12

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Legal Events

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ST Notification of lapse