FR858577A - éléments d'impédance à cristaux piézo-électriques - Google Patents

éléments d'impédance à cristaux piézo-électriques

Info

Publication number
FR858577A
FR858577A FR858577DA FR858577A FR 858577 A FR858577 A FR 858577A FR 858577D A FR858577D A FR 858577DA FR 858577 A FR858577 A FR 858577A
Authority
FR
France
Prior art keywords
piezoelectric crystal
impedance elements
crystal impedance
elements
piezoelectric
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 FR858577A publication Critical patent/FR858577A/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
    • H03H9/0023—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
    • 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
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/56—Monolithic crystal filters
    • H03H9/566—Electric coupling means therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/42—Piezoelectric device making

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
FR858577D 1938-09-03 1939-08-02 éléments d'impédance à cristaux piézo-électriques Expired FR858577A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US228355A US2194539A (en) 1938-09-03 1938-09-03 Piezoelectric crystal impedance element

Publications (1)

Publication Number Publication Date
FR858577A true FR858577A (fr) 1940-11-28

Family

ID=22856848

Family Applications (1)

Application Number Title Priority Date Filing Date
FR858577D Expired FR858577A (fr) 1938-09-03 1939-08-02 éléments d'impédance à cristaux piézo-électriques

Country Status (3)

Country Link
US (1) US2194539A (fr)
FR (1) FR858577A (fr)
GB (1) GB530957A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653547A (en) * 1947-03-01 1953-09-29 Borg Warner Hydrodynamic coupling
US2763050A (en) * 1950-01-06 1956-09-18 Bell Telephone Labor Inc Crystal unit inductance adjustment
US3437848A (en) * 1964-09-24 1969-04-08 Telefunken Patent Piezoelectric plate filter
AT320794B (de) * 1970-09-11 1975-02-25 Braun Ag Dt Piezoelektrischer antrieb
US4129799A (en) * 1975-12-24 1978-12-12 Sri International Phase reversal ultrasonic zone plate transducer
US4365182A (en) * 1980-10-14 1982-12-21 The United States Of America As Represented By The Secretary Of The Army Method of fabricating acceleration resistant crystal resonators and acceleration resistant crystal resonators so formed
CH641632B (fr) * 1981-01-15 Asulab Sa Micro-resonateur piezo-electrique.
US5371430A (en) * 1991-02-12 1994-12-06 Fujitsu Limited Piezoelectric transformer producing an output A.C. voltage with reduced distortion
US5294898A (en) * 1992-01-29 1994-03-15 Motorola, Inc. Wide bandwidth bandpass filter comprising parallel connected piezoelectric resonators

Also Published As

Publication number Publication date
GB530957A (en) 1940-12-24
US2194539A (en) 1940-03-26

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