FR2138957B1 - - Google Patents

Info

Publication number
FR2138957B1
FR2138957B1 FR727218435A FR7218435A FR2138957B1 FR 2138957 B1 FR2138957 B1 FR 2138957B1 FR 727218435 A FR727218435 A FR 727218435A FR 7218435 A FR7218435 A FR 7218435A FR 2138957 B1 FR2138957 B1 FR 2138957B1
Authority
FR
France
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
FR727218435A
Other versions
FR2138957A1 (fr
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken 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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of FR2138957A1 publication Critical patent/FR2138957A1/fr
Application granted granted Critical
Publication of FR2138957B1 publication Critical patent/FR2138957B1/fr
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
    • H03H9/02—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)
FR727218435A 1971-05-24 1972-05-24 Expired FR2138957B1 (fr)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2138957A1 FR2138957A1 (fr) 1973-01-05
FR2138957B1 true FR2138957B1 (fr) 1973-07-13

Family

ID=10080983

Family Applications (1)

Application Number Title Priority Date Filing Date
FR727218435A Expired FR2138957B1 (fr) 1971-05-24 1972-05-24

Country Status (12)

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

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 (fr) * 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 (fr) * 1979-04-27 1980-11-12
JPS56132807A (en) * 1980-03-24 1981-10-17 Hitachi Ltd Surface wave circuit equipment
JPS5745376U (fr) * 1980-08-27 1982-03-12
WO1982001790A1 (fr) * 1980-11-17 1982-05-27 Lewis Meirion F Ameliorations aux procedes de production de dispositifs comprenant des regions metallisees sur des substrats dielectriques
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
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
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
EP2239846B1 (fr) * 2006-03-17 2016-02-10 Murata Manufacturing Co., Ltd. Résonateur d'onde acoustique
EP2963818B1 (fr) * 2006-11-08 2023-06-28 Skyworks Filter Solutions Japan Co., Ltd. Résonateur à ondes acoustiques de surface

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
SE380412B (sv) 1975-11-03
AU461183B2 (en) 1975-05-15
DE2224497A1 (de) 1972-11-30
NL7206879A (fr) 1972-11-28
DE2224497C3 (de) 1980-09-25
IT958930B (it) 1973-10-30
CA965186A (en) 1975-03-25
FR2138957A1 (fr) 1973-01-05
JPS5320181B1 (fr) 1978-06-24
US3768032A (en) 1973-10-23
GB1355418A (en) 1974-06-05
AU4254472A (en) 1973-11-29
BE783831A (fr) 1972-11-23
ES403041A1 (es) 1975-04-16
DE2224497B2 (de) 1979-11-29

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Legal Events

Date Code Title Description
ST Notification of lapse