BE818398A - Filtre mettant a profit des ondes de surface acoustiques - Google Patents

Filtre mettant a profit des ondes de surface acoustiques

Info

Publication number
BE818398A
BE818398A BE147211A BE147211A BE818398A BE 818398 A BE818398 A BE 818398A BE 147211 A BE147211 A BE 147211A BE 147211 A BE147211 A BE 147211A BE 818398 A BE818398 A BE 818398A
Authority
BE
Belgium
Prior art keywords
taking advantage
surface waves
acoustic surface
filter taking
filter
Prior art date
Application number
BE147211A
Other languages
English (en)
French (fr)
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 BE818398A publication Critical patent/BE818398A/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
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14517—Means for weighting
    • H03H9/1452—Means for weighting by finger overlap length, apodisation

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
BE147211A 1973-08-03 1974-08-01 Filtre mettant a profit des ondes de surface acoustiques BE818398A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3694073A GB1396856A (en) 1973-08-03 1973-08-03 Acoustic surface-wave devices

Publications (1)

Publication Number Publication Date
BE818398A true BE818398A (fr) 1975-02-03

Family

ID=10392430

Family Applications (1)

Application Number Title Priority Date Filing Date
BE147211A BE818398A (fr) 1973-08-03 1974-08-01 Filtre mettant a profit des ondes de surface acoustiques

Country Status (10)

Country Link
US (1) US3968460A (de)
JP (1) JPS5615612B2 (de)
BE (1) BE818398A (de)
CA (1) CA1020269A (de)
DE (1) DE2435835C2 (de)
ES (1) ES428850A1 (de)
FR (1) FR2239815B1 (de)
GB (1) GB1396856A (de)
IT (1) IT1016742B (de)
SE (1) SE392376B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103262343A (zh) * 2010-12-17 2013-08-21 诺基亚公司 包括驱动器的应变可调型天线

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2319245A1 (fr) * 1975-07-24 1977-02-18 Thomson Csf Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur
DE3021013A1 (de) * 1980-06-03 1981-12-17 Franz Prof. Dr.-Ing. Wien Seifert Interdigitalwandler fuer oberflaechenwellen-(saw)einrichtung und volumenwellen-(ssb)einrichtung
DE3209948A1 (de) * 1982-03-18 1983-09-22 Siemens AG, 1000 Berlin und 8000 München Verbesserung an einem pulskompressionsfilter nach art einer dispersiven verzoegerungsleitung
DE3121516A1 (de) * 1981-05-29 1983-01-05 Siemens AG, 1000 Berlin und 8000 München Pulskompressionsfilter nach art einer dispersiven verzoegerungsleitung
DE4019004A1 (de) * 1990-06-13 1991-12-19 Siemens Ag Interdigitalwandler mit fingerbreiten-wichtung fuer oberflaechenwellenanordnungen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3699364A (en) * 1971-06-04 1972-10-17 Hughes Aircraft Co Acoustic surface wave device having improved transducer structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103262343A (zh) * 2010-12-17 2013-08-21 诺基亚公司 包括驱动器的应变可调型天线

Also Published As

Publication number Publication date
JPS5046061A (de) 1975-04-24
CA1020269A (en) 1977-11-01
ES428850A1 (es) 1976-09-01
IT1016742B (it) 1977-06-20
US3968460A (en) 1976-07-06
FR2239815A1 (de) 1975-02-28
DE2435835A1 (de) 1975-03-13
GB1396856A (en) 1975-06-11
SE392376B (sv) 1977-03-21
JPS5615612B2 (de) 1981-04-11
AU7196574A (en) 1976-02-05
DE2435835C2 (de) 1984-02-16
SE7409840L (de) 1975-02-04
FR2239815B1 (de) 1978-04-28

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