FR2258050A1 - Electromechanical passband filter - has linked slab vibrators with opposed polarity piezoelectric transducers - Google Patents

Electromechanical passband filter - has linked slab vibrators with opposed polarity piezoelectric transducers

Info

Publication number
FR2258050A1
FR2258050A1 FR7324839A FR7324839A FR2258050A1 FR 2258050 A1 FR2258050 A1 FR 2258050A1 FR 7324839 A FR7324839 A FR 7324839A FR 7324839 A FR7324839 A FR 7324839A FR 2258050 A1 FR2258050 A1 FR 2258050A1
Authority
FR
France
Prior art keywords
piezoelectric transducers
electromechanical
vibrators
passband filter
slabs
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
FR7324839A
Other languages
French (fr)
Other versions
FR2258050B1 (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.)
BOSC ROGER FR
Original Assignee
BOSC ROGER FR
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 BOSC ROGER FR filed Critical BOSC ROGER FR
Priority to FR7324839A priority Critical patent/FR2258050A1/en
Publication of FR2258050A1 publication Critical patent/FR2258050A1/en
Application granted granted Critical
Publication of FR2258050B1 publication Critical patent/FR2258050B1/fr
Granted 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
    • H03H9/48—Coupling means therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

The electromechanical passband filter, for e.g. telecommunications, consists of two parallel rectangular metal slabs (3, 31) capable of supporting flexural vibrations. The piezoelectric transducers (4, 41) are mounted on top of the metal slabs. The two slabs are joined by two parallel metal rods (5, 6) that act as torsion vibrators. The rods are located towards the ends of the metal slabs. To improve the filter's cut-off characteristics, a coupling capacitor is connected between the contact electrodes attached to the piezoelectric transducers so that the piezoelectric plates have opposite polarities. The piezoelectric transducers are rectangular and do not occupy the whole of the metal slabs.
FR7324839A 1973-07-06 1973-07-06 Electromechanical passband filter - has linked slab vibrators with opposed polarity piezoelectric transducers Granted FR2258050A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7324839A FR2258050A1 (en) 1973-07-06 1973-07-06 Electromechanical passband filter - has linked slab vibrators with opposed polarity piezoelectric transducers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7324839A FR2258050A1 (en) 1973-07-06 1973-07-06 Electromechanical passband filter - has linked slab vibrators with opposed polarity piezoelectric transducers

Publications (2)

Publication Number Publication Date
FR2258050A1 true FR2258050A1 (en) 1975-08-08
FR2258050B1 FR2258050B1 (en) 1976-05-07

Family

ID=9122176

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7324839A Granted FR2258050A1 (en) 1973-07-06 1973-07-06 Electromechanical passband filter - has linked slab vibrators with opposed polarity piezoelectric transducers

Country Status (1)

Country Link
FR (1) FR2258050A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504326A1 (en) * 1981-04-15 1982-10-22 Amstutz Pierre ELECTROMECHANICAL BAND PASS FILTER WITH COUPLED RESONATORS

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2504326A1 (en) * 1981-04-15 1982-10-22 Amstutz Pierre ELECTROMECHANICAL BAND PASS FILTER WITH COUPLED RESONATORS
EP0064435A1 (en) * 1981-04-15 1982-11-10 Pierre Amstutz Electromechanical band-pass filter with coupled resonators

Also Published As

Publication number Publication date
FR2258050B1 (en) 1976-05-07

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Legal Events

Date Code Title Description
ST Notification of lapse