IT958930B - Dispositivo ad onde acustiche super ficiali particolarmente per linee di ritardo e per dispositivi a selettivita di frequenza - Google Patents

Dispositivo ad onde acustiche super ficiali particolarmente per linee di ritardo e per dispositivi a selettivita di frequenza

Info

Publication number
IT958930B
IT958930B IT68608/72A IT6860872A IT958930B IT 958930 B IT958930 B IT 958930B IT 68608/72 A IT68608/72 A IT 68608/72A IT 6860872 A IT6860872 A IT 6860872A IT 958930 B IT958930 B IT 958930B
Authority
IT
Italy
Prior art keywords
acoustic waves
delay lines
frequency selectivity
device particularly
waves device
Prior art date
Application number
IT68608/72A
Other languages
English (en)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Application granted granted Critical
Publication of IT958930B publication Critical patent/IT958930B/it

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
    • H03H9/14544—Transducers of particular shape or position
    • 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
    • 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)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
IT68608/72A 1971-05-24 1972-05-20 Dispositivo ad onde acustiche super ficiali particolarmente per linee di ritardo e per dispositivi a selettivita di frequenza IT958930B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1664171 1971-05-24

Publications (1)

Publication Number Publication Date
IT958930B true IT958930B (it) 1973-10-30

Family

ID=10080983

Family Applications (1)

Application Number Title Priority Date Filing Date
IT68608/72A IT958930B (it) 1971-05-24 1972-05-20 Dispositivo ad onde acustiche super ficiali particolarmente per linee di ritardo e per dispositivi a selettivita di frequenza

Country Status (12)

Country Link
US (1) US3768032A (it)
JP (1) JPS5320181B1 (it)
AU (1) AU461183B2 (it)
BE (1) BE783831A (it)
CA (1) CA965186A (it)
DE (1) DE2224497C3 (it)
ES (1) ES403041A1 (it)
FR (1) FR2138957B1 (it)
GB (1) GB1355418A (it)
IT (1) IT958930B (it)
NL (1) NL7206879A (it)
SE (1) SE380412B (it)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906432A (en) * 1972-07-20 1975-09-16 Ibm Grating guides for acoustic surface waves
JPS5418910B2 (it) * 1973-08-31 1979-07-11
GB1514923A (en) * 1974-07-02 1978-06-21 Plessey Co Ltd Acoustic surface wave filters
DE2618210C3 (de) * 1976-04-26 1980-03-13 Siemens Ag, 1000 Berlin Und 8000 Muenchen Wandlerelektroden für Filter oder Verzögerungsleitungen nach dem Oberflächenwellenprinzip
JPS55157480U (it) * 1979-04-27 1980-11-12
JPS56132807A (en) * 1980-03-24 1981-10-17 Hitachi Ltd Surface wave circuit equipment
JPS5745376U (it) * 1980-08-27 1982-03-12
JPH0559609B1 (it) * 1980-11-17 1993-08-31 British Tech Group
JPS596612A (ja) * 1982-07-05 1984-01-13 Hitachi Ltd 弾性表面波装置
GB2157522B (en) * 1984-04-09 1987-08-19 Philips Electronic Associated Electrical filter comprising an acoustic surface wave device, and method of manufacturing such a filter
CN100539228C (zh) * 2005-12-06 2009-09-09 精工爱普生株式会社 压电层压体、表面声波元件、压电谐振器及压电传动装置
JP4735840B2 (ja) 2005-12-06 2011-07-27 セイコーエプソン株式会社 圧電体積層体、表面弾性波素子、薄膜圧電共振子および圧電アクチュエータ
CN101405938B (zh) * 2006-03-17 2011-07-27 株式会社村田制作所 弹性波谐振器
EP2091146B1 (en) * 2006-11-08 2015-07-22 Skyworks Panasonic Filter Solutions Japan Co., Ltd. Surface acoustic wave resonator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3289114A (en) * 1963-12-24 1966-11-29 Bell Telephone Labor Inc Tapped ultrasonic delay line and uses therefor
US3696312A (en) * 1970-06-30 1972-10-03 Ibm Cyclotron resonance devices controllable by electric fields

Also Published As

Publication number Publication date
NL7206879A (it) 1972-11-28
US3768032A (en) 1973-10-23
DE2224497B2 (de) 1979-11-29
GB1355418A (en) 1974-06-05
DE2224497C3 (de) 1980-09-25
SE380412B (sv) 1975-11-03
DE2224497A1 (de) 1972-11-30
BE783831A (fr) 1972-11-23
AU461183B2 (en) 1975-05-15
CA965186A (en) 1975-03-25
FR2138957B1 (it) 1973-07-13
FR2138957A1 (it) 1973-01-05
AU4254472A (en) 1973-11-29
ES403041A1 (es) 1975-04-16
JPS5320181B1 (it) 1978-06-24

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