CH501340A - Crystal filter - Google Patents

Crystal filter

Info

Publication number
CH501340A
CH501340A CH1598269A CH1598269A CH501340A CH 501340 A CH501340 A CH 501340A CH 1598269 A CH1598269 A CH 1598269A CH 1598269 A CH1598269 A CH 1598269A CH 501340 A CH501340 A CH 501340A
Authority
CH
Switzerland
Prior art keywords
crystal filter
crystal
filter
Prior art date
Application number
CH1598269A
Other languages
German (de)
Inventor
Ernest Fair Irvin
Charles Thompson Edwin
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of CH501340A publication Critical patent/CH501340A/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
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
    • H03H9/56—Monolithic crystal filters
    • H03H9/566—Electric coupling means therefor
    • 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
    • H03H2003/0414—Resonance frequency
CH1598269A 1968-10-30 1969-10-27 Crystal filter CH501340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77184368A 1968-10-30 1968-10-30

Publications (1)

Publication Number Publication Date
CH501340A true CH501340A (en) 1970-12-31

Family

ID=25093109

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1598269A CH501340A (en) 1968-10-30 1969-10-27 Crystal filter

Country Status (8)

Country Link
US (1) US3573672A (en)
BE (1) BE740969A (en)
CH (1) CH501340A (en)
DE (1) DE1953826C2 (en)
FR (1) FR2021887A1 (en)
GB (1) GB1287002A (en)
NL (1) NL155693B (en)
SE (1) SE365083B (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614483A (en) * 1970-06-24 1971-10-19 Clevite Corp Width flexural resonator and coupled mode filter
US3697788A (en) * 1970-09-30 1972-10-10 Motorola Inc Piezoelectric resonating device
US3732510A (en) * 1970-10-12 1973-05-08 Bell Telephone Labor Inc Multisection precision-tuned monolithic crystal filters
US3676805A (en) * 1970-10-12 1972-07-11 Bell Telephone Labor Inc Monolithic crystal filter with auxiliary filter shorting tabs
JPS5329265B2 (en) * 1972-09-20 1978-08-19
US4112147A (en) * 1977-05-13 1978-09-05 Western Electric Company, Inc. Method of manufacturing a monolithic crystal filter
US4218631A (en) * 1977-06-08 1980-08-19 Kinsekisha Laboratory, Ltd. Electrode structure for thickness mode piezoelectric vibrating elements
US4329666A (en) * 1980-08-11 1982-05-11 Motorola, Inc. Two-pole monolithic crystal filter
US4627379A (en) * 1984-11-29 1986-12-09 General Electric Company Shutter apparatus for fine-tuning a coupled-dual resonator crystal
US4676993A (en) * 1984-11-29 1987-06-30 General Electric Company Method and apparatus for selectively fine-tuning a coupled-dual resonator crystal and crystal manufactured thereby
US4833430A (en) * 1984-11-29 1989-05-23 General Electric Company Coupled-dual resonator crystal
US4839618A (en) * 1987-05-26 1989-06-13 General Electric Company Monolithic crystal filter with wide bandwidth and method of making same
EP0535219A4 (en) * 1991-04-22 1993-10-13 Motorola, Inc. Surface mountable piezoelectric device with in situ finish plate mask
DE69416129T2 (en) * 1994-10-10 1999-07-01 Endress Hauser Gmbh Co A method for operating an ultrasonic transducer and circuit arrangement for performing the method
JPH1098350A (en) * 1996-07-31 1998-04-14 Daishinku Co Piezoelectric vibrating device
US6020797A (en) * 1998-08-21 2000-02-01 Cts Corporation Electrode connection configuration and method for a multi-pole monolithic crystal filter
JP2008206139A (en) * 2007-01-25 2008-09-04 Matsushita Electric Ind Co Ltd Dual mode piezoelectric filter, method of manufacturing the filter, high frequency circuit component and communication device using the filter
JP2008245243A (en) * 2007-02-26 2008-10-09 Epson Toyocom Corp Contour resonator and adjustment method therefor
FR2966306B1 (en) 2010-10-15 2013-06-14 Commissariat Energie Atomique BAW FILTER WITH SIDE COUPLING USING PHONONIC CRYSTALS

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2345491A (en) * 1941-11-25 1944-03-28 Bell Telephone Labor Inc Wave transmission network
US2859346A (en) * 1954-07-28 1958-11-04 Motorola Inc Crystal oscillator
US2956184A (en) * 1954-11-01 1960-10-11 Honeywell Regulator Co Transducer
NL277292A (en) * 1961-06-20
US3271704A (en) * 1963-03-25 1966-09-06 Bell Telephone Labor Inc Ultrasonic delay device
US3382381A (en) * 1965-05-27 1968-05-07 Piezo Technology Inc Tab plateback
FR1523518A (en) * 1966-04-11 1968-05-03 Western Electric Co Acoustic device used to transmit energy between two energy circuits

Also Published As

Publication number Publication date
DE1953826A1 (en) 1970-05-21
NL155693B (en) 1978-01-16
GB1287002A (en) 1972-08-31
FR2021887A1 (en) 1970-07-24
NL6916084A (en) 1970-05-04
BE740969A (en) 1970-04-01
DE1953826C2 (en) 1985-02-14
US3573672A (en) 1971-04-06
SE365083B (en) 1974-03-11

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Legal Events

Date Code Title Description
PL Patent ceased