BE826514A - Dispositif filtre d'ondes de surfaces acoustiques - Google Patents

Dispositif filtre d'ondes de surfaces acoustiques

Info

Publication number
BE826514A
BE826514A BE2054197A BE2054197A BE826514A BE 826514 A BE826514 A BE 826514A BE 2054197 A BE2054197 A BE 2054197A BE 2054197 A BE2054197 A BE 2054197A BE 826514 A BE826514 A BE 826514A
Authority
BE
Belgium
Prior art keywords
filter device
wave filter
surface wave
acoustic surface
acoustic
Prior art date
Application number
BE2054197A
Other languages
English (en)
French (fr)
Inventor
G F Craven
J S Heeks
G Marshall
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 filed Critical
Publication of BE826514A publication Critical patent/BE826514A/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02685—Grating lines having particular arrangements
    • H03H9/02771—Reflector banks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02685—Grating lines having particular arrangements
    • H03H9/02708—Shifted grating lines
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02795—Multi-strip couplers as track changers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters
    • H03H9/644—Coupled resonator filters having two acoustic tracks
    • H03H9/6443—Coupled resonator filters having two acoustic tracks being acoustically coupled
    • H03H9/6446—Coupled resonator filters having two acoustic tracks being acoustically coupled by floating multistrip couplers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/72—Networks using surface acoustic waves
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H2260/00—Theory relating to impedance networks

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
BE2054197A 1974-03-05 1975-03-11 Dispositif filtre d'ondes de surfaces acoustiques BE826514A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB976774A GB1445782A (en) 1974-03-05 1974-03-05 Surface acoustic wave filter device

Publications (1)

Publication Number Publication Date
BE826514A true BE826514A (fr) 1975-09-11

Family

ID=9878404

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2054197A BE826514A (fr) 1974-03-05 1975-03-11 Dispositif filtre d'ondes de surfaces acoustiques

Country Status (6)

Country Link
US (1) US3965446A (it)
BE (1) BE826514A (it)
DE (1) DE2508379A1 (it)
FR (1) FR2263638A1 (it)
GB (1) GB1445782A (it)
IT (1) IT1033361B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063202A (en) * 1976-05-05 1977-12-13 Rockwell International Corporation Band-pass filter with surface acoustic wave devices
US4155056A (en) * 1977-08-25 1979-05-15 Bell Telephone Laboratories, Incorporated Cascaded grating resonator filters with external input-output couplers
FR2484152A1 (fr) * 1980-06-10 1981-12-11 Feldmann Michel Filtre recursif a ondes elastiques de surface utilisant un resonateur passif
US4694266A (en) * 1986-07-29 1987-09-15 R. F. Monolithic, Inc. Notch filter
JP3487772B2 (ja) 1998-03-11 2004-01-19 富士通株式会社 弾性表面波フィルタ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3836876A (en) * 1971-05-05 1974-09-17 Secr Defence Acoustic surface wave devices
GB1372235A (en) * 1971-05-05 1974-10-30 Secr Defence Acoustic surface wave devices
BE785945A (fr) * 1971-07-06 1973-01-08 Siemens Ag Filtre electrique utilisant le principe des ondes de surface
US3716809A (en) * 1971-08-11 1973-02-13 Us Air Force Acoustic surface wave resonator
FR2235633A5 (it) * 1973-06-29 1975-01-24 Thomson Csf
US3886504A (en) * 1974-05-20 1975-05-27 Texas Instruments Inc Acoustic surface wave resonator devices

Also Published As

Publication number Publication date
IT1033361B (it) 1979-07-10
US3965446A (en) 1976-06-22
GB1445782A (en) 1976-08-11
DE2508379A1 (de) 1975-09-11
FR2263638A1 (it) 1975-10-03

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