BE758421A - Filtre passe-bande a cristal polylithique, presentant des frequences polaires d'attenuation dans la bande d'arret inferieure - Google Patents

Filtre passe-bande a cristal polylithique, presentant des frequences polaires d'attenuation dans la bande d'arret inferieure

Info

Publication number
BE758421A
BE758421A BE758421DA BE758421A BE 758421 A BE758421 A BE 758421A BE 758421D A BE758421D A BE 758421DA BE 758421 A BE758421 A BE 758421A
Authority
BE
Belgium
Prior art keywords
band
polylithic
mitigation
pass filter
lower stop
Prior art date
Application number
Other languages
English (en)
French (fr)
Inventor
H J Orchard
D F Sheahan
Original Assignee
Automatic Elect Lab
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.)
Publication date
Publication of BE758421A publication Critical patent/BE758421A/xx

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
    • H03H9/58—Multiple crystal filters
    • H03H9/60—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)
BE758421D 1969-11-06 Filtre passe-bande a cristal polylithique, presentant des frequences polaires d'attenuation dans la bande d'arret inferieure BE758421A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87452269A 1969-11-06 1969-11-06

Publications (1)

Publication Number Publication Date
BE758421A true BE758421A (fr) 1971-05-04

Family

ID=25363985

Family Applications (1)

Application Number Title Priority Date Filing Date
BE758421D BE758421A (fr) 1969-11-06 Filtre passe-bande a cristal polylithique, presentant des frequences polaires d'attenuation dans la bande d'arret inferieure

Country Status (6)

Country Link
US (1) US3676806A (de)
JP (1) JPS5142907B1 (de)
BE (1) BE758421A (de)
CA (1) CA918259A (de)
DE (1) DE2054135B2 (de)
GB (1) GB1328275A (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4944648A (de) * 1972-08-31 1974-04-26
US3983518A (en) * 1975-04-24 1976-09-28 De Statt Der Nederlanden, Te Dezen Vertegenwoordigd Door De Directeur-Generaal Der Posterijen, Telegrafie En Telefonie Filter chain
US4045753A (en) * 1975-05-09 1977-08-30 Toko, Inc. Ceramic filter
US4246554A (en) * 1978-12-11 1981-01-20 E-Systems, Inc. Inductorless monolithic crystal filter network
US4825467A (en) * 1986-11-25 1989-04-25 International Telesystems, Inc. Restricted access television transmission system
US5856728A (en) * 1997-02-28 1999-01-05 Motorola Inc. Power transformer circuit with resonator

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923900A (en) * 1960-02-02 Poschenrieder
US2248776A (en) * 1938-07-28 1941-07-08 Bell Telephone Labor Inc Wave filter
US2271870A (en) * 1939-11-10 1942-02-03 Bell Telephone Labor Inc Wave transmission network
US2859416A (en) * 1955-07-18 1958-11-04 Motorola Inc Filter
US2990525A (en) * 1957-12-12 1961-06-27 Bell Telephone Labor Inc Wave 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
US3401276A (en) * 1965-04-19 1968-09-10 Clevite Corp Piezoelectric resonators
US3416104A (en) * 1965-05-05 1968-12-10 Filtech Corp Band-pass crystal filters
US3518573A (en) * 1968-09-03 1970-06-30 Bell Telephone Labor Inc Oscillator with multiresonator crystal feedback and load coupling
US3517350A (en) * 1969-07-07 1970-06-23 Bell Telephone Labor Inc Energy translating device

Also Published As

Publication number Publication date
CA918259A (en) 1973-01-02
DE2054135B2 (de) 1972-12-07
US3676806A (en) 1972-07-11
DE2054135A1 (de) 1971-05-19
JPS5142907B1 (de) 1976-11-18
GB1328275A (en) 1973-08-30

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