CA925967A - Crystal filter - Google Patents

Crystal filter

Info

Publication number
CA925967A
CA925967A CA107363A CA107363A CA925967A CA 925967 A CA925967 A CA 925967A CA 107363 A CA107363 A CA 107363A CA 107363 A CA107363 A CA 107363A CA 925967 A CA925967 A CA 925967A
Authority
CA
Canada
Prior art keywords
crystal filter
crystal
filter
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
CA107363A
Other languages
English (en)
Other versions
CA107363S (en
Inventor
R. Braun Arthur
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of CA925967A publication Critical patent/CA925967A/en
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 devices; 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
CA107363A 1970-08-12 1971-03-10 Crystal filter Expired CA925967A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6320470A 1970-08-12 1970-08-12

Publications (1)

Publication Number Publication Date
CA925967A true CA925967A (en) 1973-05-08

Family

ID=22047661

Family Applications (1)

Application Number Title Priority Date Filing Date
CA107363A Expired CA925967A (en) 1970-08-12 1971-03-10 Crystal filter

Country Status (10)

Country Link
US (1) US3656180A (es)
JP (1) JPS5116093B1 (es)
BE (1) BE771051A (es)
CA (1) CA925967A (es)
DE (1) DE2139218C3 (es)
ES (1) ES394607A1 (es)
FR (1) FR2104192A5 (es)
GB (1) GB1363918A (es)
NL (1) NL162523C (es)
SE (1) SE361800B (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3739304A (en) * 1971-09-27 1973-06-12 Bell Telephone Labor Inc Resonator interconnections in monolithic crystal filters
JPS5329265B2 (es) * 1972-09-20 1978-08-19
US3947784A (en) * 1974-09-19 1976-03-30 Motorola, Inc. Dual-coupled monolithic crystal element for modifying response of filter
US3944951A (en) * 1974-11-21 1976-03-16 Bell Telephone Laboratories, Incorporated Monolithic crystal filter
US4484158A (en) * 1982-07-07 1984-11-20 General Electric Company Monolithic crystal filter and method of manufacturing same
US4604543A (en) * 1984-11-29 1986-08-05 Hitachi, Ltd. Multi-element ultrasonic transducer
GB0014963D0 (en) * 2000-06-20 2000-08-09 Koninkl Philips Electronics Nv A bulk acoustic wave device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2198684A (en) * 1938-09-20 1940-04-30 Bell Telephone Labor Inc Wave filter
US2373431A (en) * 1943-03-30 1945-04-10 Bell Telephone Labor Inc Electric wave filter
US3185943A (en) * 1956-04-23 1965-05-25 Toyotsushinki Kabushiki Kaisha One-piece mechanical filter having portions forming plural resonators and coupling means
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
FR1430874A (fr) * 1963-12-12 1966-03-11 Commissariat Energie Atomique Magnétomètre à résonances magnétiques
US3334307A (en) * 1966-11-14 1967-08-01 Zenith Radio Corp Multi-electrode acoustic amplifier with unitary transducing and translating medium

Also Published As

Publication number Publication date
BE771051A (fr) 1971-12-16
DE2139218B2 (es) 1974-05-09
NL162523B (nl) 1979-12-17
SE361800B (es) 1973-11-12
FR2104192A5 (es) 1972-04-14
JPS5116093B1 (es) 1976-05-21
GB1363918A (en) 1974-08-21
DE2139218C3 (de) 1974-12-19
ES394607A1 (es) 1975-04-01
DE2139218A1 (de) 1972-02-17
AU3202771A (en) 1973-02-08
NL7111061A (es) 1972-02-15
US3656180A (en) 1972-04-11
NL162523C (nl) 1980-05-16

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