ATE444T1 - PIEZOELECTRIC RESONATOR. - Google Patents

PIEZOELECTRIC RESONATOR.

Info

Publication number
ATE444T1
ATE444T1 AT79103785T AT79103785T ATE444T1 AT E444 T1 ATE444 T1 AT E444T1 AT 79103785 T AT79103785 T AT 79103785T AT 79103785 T AT79103785 T AT 79103785T AT E444 T1 ATE444 T1 AT E444T1
Authority
AT
Austria
Prior art keywords
wafer
piezoelectric resonator
metal
electroded
resonators
Prior art date
Application number
AT79103785T
Other languages
German (de)
Inventor
Werner Mattuschka
Original Assignee
Siemens Aktiengesellschaft Berlin Und Muenchen
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 Siemens Aktiengesellschaft Berlin Und Muenchen filed Critical Siemens Aktiengesellschaft Berlin Und Muenchen
Application granted granted Critical
Publication of ATE444T1 publication Critical patent/ATE444T1/en

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
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
    • H03H9/132—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials characterized by a particular shape
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/02—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks
    • H03H3/04—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of piezoelectric or electrostrictive resonators or networks for obtaining desired frequency or temperature coefficient

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

A wafer of piezoelectric material is provided with electrodes on opposite surfaces thereof. Frequency fine tuning of such resonators is accomplished by relatively thin film of metal applied over the surface of at least one electrode and the adjacent non-electroded wafer material. The metal film is of such small maximum thickness that it functions as a quasi-insulator and is extremely stable over prolonged operating conditions so that the resonator parameters remain constant.
AT79103785T 1978-10-20 1979-10-03 PIEZOELECTRIC RESONATOR. ATE444T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19782845807 DE2845807A1 (en) 1978-10-20 1978-10-20 PIEZOELECTRIC RESONATOR
EP79103785A EP0010227B1 (en) 1978-10-20 1979-10-03 Piezoelectric resonator

Publications (1)

Publication Number Publication Date
ATE444T1 true ATE444T1 (en) 1981-12-15

Family

ID=6052713

Family Applications (1)

Application Number Title Priority Date Filing Date
AT79103785T ATE444T1 (en) 1978-10-20 1979-10-03 PIEZOELECTRIC RESONATOR.

Country Status (5)

Country Link
US (1) US4326142A (en)
EP (1) EP0010227B1 (en)
JP (1) JPS5556715A (en)
AT (1) ATE444T1 (en)
DE (2) DE2845807A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0459631B1 (en) * 1990-04-27 1998-08-12 Seiko Epson Corporation AT-cut crystal oscillating element and method of making the same
JPH1098350A (en) * 1996-07-31 1998-04-14 Daishinku Co Piezoelectric vibrating device
US6249074B1 (en) * 1997-08-22 2001-06-19 Cts Corporation Piezoelectric resonator using sacrificial layer and method of tuning same
US6566979B2 (en) * 2001-03-05 2003-05-20 Agilent Technologies, Inc. Method of providing differential frequency adjusts in a thin film bulk acoustic resonator (FBAR) filter and apparatus embodying the method

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635199A (en) * 1948-01-08 1953-04-14 John M Wolfskill Piezoelectric crystal apparatus
US2699508A (en) * 1951-12-21 1955-01-11 Selectronics Inc Method of mounting and construction of mounting for low frequency piezoelectric crystals
GB1104383A (en) * 1964-05-30 1968-02-28 Matsushita Electric Ind Co Ltd Piezoelectric ceramic resonator devices
US3401276A (en) * 1965-04-19 1968-09-10 Clevite Corp Piezoelectric resonators
US3363119A (en) * 1965-04-19 1968-01-09 Clevite Corp Piezoelectric resonator and method of making same
CA1106960A (en) * 1976-02-17 1981-08-11 Virgil E. Bottom Method of adjusting the frequency of a crystal resonator
DE2823540C2 (en) * 1977-06-08 1985-04-18 Kinseki Ltd., Tokio/Tokyo Piezoelectric multiple resonator
GB2013975B (en) * 1977-12-12 1982-05-19 Gen Electric Co Ltd Thickness shear mode piezoelectric devices

Also Published As

Publication number Publication date
US4326142A (en) 1982-04-20
EP0010227A1 (en) 1980-04-30
DE2961462D1 (en) 1982-01-28
EP0010227B1 (en) 1981-11-25
DE2845807A1 (en) 1980-04-24
JPS5556715A (en) 1980-04-25

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Legal Events

Date Code Title Description
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