CH493166A - Crystal filter - Google Patents

Crystal filter

Info

Publication number
CH493166A
CH493166A CH615569A CH615569A CH493166A CH 493166 A CH493166 A CH 493166A CH 615569 A CH615569 A CH 615569A CH 615569 A CH615569 A CH 615569A CH 493166 A CH493166 A CH 493166A
Authority
CH
Switzerland
Prior art keywords
crystal filter
crystal
filter
Prior art date
Application number
CH615569A
Other languages
German (de)
Inventor
Verne Smith Warren La
Allen Sykes Roger
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 CH493166A publication Critical patent/CH493166A/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
CH615569A 1968-04-24 1969-04-23 Crystal filter CH493166A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US72367768A 1968-04-24 1968-04-24

Publications (1)

Publication Number Publication Date
CH493166A true CH493166A (en) 1970-06-30

Family

ID=24907224

Family Applications (1)

Application Number Title Priority Date Filing Date
CH615569A CH493166A (en) 1968-04-24 1969-04-23 Crystal filter

Country Status (8)

Country Link
US (1) US3599124A (en)
BE (1) BE731938A (en)
CH (1) CH493166A (en)
ES (1) ES366488A1 (en)
FR (1) FR2006841A1 (en)
GB (1) GB1266565A (en)
NL (1) NL6906268A (en)
SE (1) SE362759B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4329666A (en) * 1980-08-11 1982-05-11 Motorola, Inc. Two-pole monolithic crystal filter
US4825467A (en) * 1986-11-25 1989-04-25 International Telesystems, Inc. Restricted access television transmission system
US4980598A (en) * 1989-12-21 1990-12-25 Lucas Schaevitz Inc. Monolithic resonator for a vibrating beam accelerometer
JP2741087B2 (en) * 1990-01-12 1998-04-15 日本特殊陶業株式会社 Frequency adjustment method of stripline filter
US6205315B1 (en) * 1999-11-24 2001-03-20 Xerox Corporation Tuned transducer, and methods and systems for tuning a transducer
US6943484B2 (en) * 2001-12-06 2005-09-13 University Of Pittsburgh Tunable piezoelectric micro-mechanical resonator

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3344368A (en) * 1967-09-26 Fettweis bandpass filter
US3396327A (en) * 1961-12-27 1968-08-06 Toyotsushinki Kabushiki Kaisha Thickness shear vibration type, crystal electromechanical filter
US3222622A (en) * 1962-08-14 1965-12-07 Clevite Corp Wave filter comprising piezoelectric wafer electroded to define a plurality of resonant regions independently operable without significant electro-mechanical interaction
US3437848A (en) * 1964-09-24 1969-04-08 Telefunken Patent Piezoelectric plate filter
US3401283A (en) * 1965-04-19 1968-09-10 Clevite Corp Piezoelectric resonator
US3363119A (en) * 1965-04-19 1968-01-09 Clevite Corp Piezoelectric resonator and method of making same
US3334307A (en) * 1966-11-14 1967-08-01 Zenith Radio Corp Multi-electrode acoustic amplifier with unitary transducing and translating medium
US3384768A (en) * 1967-09-29 1968-05-21 Clevite Corp Piezoelectric resonator

Also Published As

Publication number Publication date
NL6906268A (en) 1969-10-28
ES366488A1 (en) 1971-03-16
DE1919024A1 (en) 1969-12-04
GB1266565A (en) 1972-03-15
US3599124A (en) 1971-08-10
BE731938A (en) 1969-10-01
SE362759B (en) 1973-12-17
DE1919024B2 (en) 1973-02-01
FR2006841A1 (en) 1970-01-02

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Legal Events

Date Code Title Description
PL Patent ceased