BE874349A - Dispositif mettant a profit des ondes acoustiques - Google Patents

Dispositif mettant a profit des ondes acoustiques

Info

Publication number
BE874349A
BE874349A BE0/193613A BE193613A BE874349A BE 874349 A BE874349 A BE 874349A BE 0/193613 A BE0/193613 A BE 0/193613A BE 193613 A BE193613 A BE 193613A BE 874349 A BE874349 A BE 874349A
Authority
BE
Belgium
Prior art keywords
acoustic waves
taking advantage
device taking
acoustic
waves
Prior art date
Application number
BE0/193613A
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
Publication of BE874349A publication Critical patent/BE874349A/fr

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
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6433—Coupled resonator filters

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
BE0/193613A 1978-02-23 1979-02-21 Dispositif mettant a profit des ondes acoustiques BE874349A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB726378 1978-02-23

Publications (1)

Publication Number Publication Date
BE874349A true BE874349A (fr) 1979-08-21

Family

ID=9829752

Family Applications (1)

Application Number Title Priority Date Filing Date
BE0/193613A BE874349A (fr) 1978-02-23 1979-02-21 Dispositif mettant a profit des ondes acoustiques

Country Status (8)

Country Link
US (1) US4247836A (fr)
JP (1) JPS5948565B2 (fr)
BE (1) BE874349A (fr)
CA (1) CA1132211A (fr)
DE (1) DE2906893A1 (fr)
FR (1) FR2418574B1 (fr)
GB (1) GB2018079B (fr)
SE (1) SE429488B (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117992B (en) * 1982-03-24 1985-09-18 Philips Electronic Associated Parallel-series acoustic wave device arrangement
US4609891A (en) * 1985-10-16 1986-09-02 Sperry Corporation Staggered SAW resonator for differential detection
DE3853513T2 (de) * 1987-11-20 1995-11-23 Oki Electric Ind Co Ltd Akustische Oberflächenwellenanordnung.
JPH03293808A (ja) * 1990-04-11 1991-12-25 Fujitsu Ltd 弾性表面波素子の製造方法
US5296824A (en) * 1991-12-02 1994-03-22 Motorola, Inc. Low loss wide bandwidth parallel channel acoustic filter
DE4214122C2 (de) * 1992-04-29 2001-02-22 Siemens Ag Zweispur-Oberflächenwellenanordnung mit verbesserter Selektionseigenschaft
JPH05315886A (ja) * 1992-05-14 1993-11-26 Matsushita Electric Ind Co Ltd 弾性表面波フィルタ
USD350407S (en) 1992-06-01 1994-09-06 John Manufacturing Limited Rechargeable emergency night light
USD358108S (en) 1993-04-15 1995-05-09 John Manufacturing Limited Infra-red sensor light
USD434512S (en) 1997-11-17 2000-11-28 John Manufacturing Limited Rechargeable emergency light
USD407510S (en) 1998-06-17 1999-03-30 John Manufacturing Limited Combined rechargeable emergency light and night light
JP3963862B2 (ja) 2003-05-20 2007-08-22 富士通メディアデバイス株式会社 弾性表面波フィルタ及びそれを有する分波器
WO2009025057A1 (fr) * 2007-08-23 2009-02-26 Fujitsu Limited Filtre de branchement, module comprenant le filtre de branchement, dispositif de communication
KR101276944B1 (ko) * 2008-12-26 2013-06-19 다이요 유덴 가부시키가이샤 분파기 및 전자 장치
JP5183459B2 (ja) * 2008-12-26 2013-04-17 太陽誘電株式会社 分波器、分波器用基板および電子装置
WO2015191719A1 (fr) * 2014-06-10 2015-12-17 Massachusetts Institute Of Technology Résonateurs mems couplés non libérés et filtres de transmission
CN111010142B (zh) * 2019-12-17 2023-03-10 成都频岢微电子有限公司 一种环形无反射栅低插损声表滤波器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3810257A (en) * 1973-02-01 1974-05-07 Texas Instruments Inc Acoustic surface wave transducer configuration for reducing triple transit signals
GB1451326A (en) * 1973-02-16 1976-09-29 Nat Res Dev Acoustic wave devices
DE2312057A1 (de) * 1973-03-10 1974-09-12 Philips Patentverwaltung Akustisches oberflaechenwellenkammsperrfilter
US3886504A (en) * 1974-05-20 1975-05-27 Texas Instruments Inc Acoustic surface wave resonator devices
FR2274171A1 (fr) * 1974-06-10 1976-01-02 Philips Nv Filtre mettant a profit des ondes de surface acoustiques

Also Published As

Publication number Publication date
SE429488B (sv) 1983-09-05
GB2018079B (en) 1982-08-18
SE7901465L (sv) 1979-08-24
DE2906893A1 (de) 1979-08-30
JPS54123892A (en) 1979-09-26
JPS5948565B2 (ja) 1984-11-27
FR2418574B1 (fr) 1987-11-13
FR2418574A1 (fr) 1979-09-21
GB2018079A (en) 1979-10-10
US4247836A (en) 1981-01-27
CA1132211A (fr) 1982-09-21

Similar Documents

Publication Publication Date Title
FR2325243A1 (fr) Dispositif mettant a profit des ondes de surfaces acoustiques
BE874349A (fr) Dispositif mettant a profit des ondes acoustiques
BE860540A (fr) Ensemble a transducteur et appareil l'utilisant
IT1098946B (it) Dispositivo per il fissaggio di un trasduttore acustico ad un contenitore
ES492684A0 (es) Un dispositivo transductor acustico
IT1088489B (it) Trasduttore sonico elettrostatico
FR2523382B1 (fr) Dispositif a onde acoustique de surface
BE832007A (fr) Filtre mettant a profit des ondes de surface acoustiques
BE876086A (fr) Dispositif piezo-electrique
BE878906A (fr) Resonateur pour ondes acoustiques
BE860227A (fr) Dispositif engendrant des ondes de surface acoustiques
BE863590A (fr) Resonateur d'ondes de surface acoustiques
FR2282191A1 (fr) Dispositif a ondes acoustiques superficielles
DK238579A (da) Klokketone-lydsystem med piezoelektrisk transducer
IT1099337B (it) Dispositivo per esplorazione e visulaizzazione mediante onde ultrasoniche
BE871010A (fr) Resonateur pour ondes acoustiques
OA06008A (fr) Procédé et dispositif pour l'étude accoustique d'un sondage.
FR2483143B1 (fr) Dispositif convoluteur piezoelectrique a ondes elastiques
FR2345854A1 (fr) Dispositif a ondes de surface elastiques
BE842537A (fr) Dispositif a ondes acoustiques de surface
FR2466139B1 (fr) Dispositif reflecteur d'ondes acoustiques superficielles
FR2345046A1 (fr) Ensemble a transducteurs pour systeme sonore
FR2342537A1 (fr) Dispositif d'onde acoustique de surface
FR2450003B1 (fr) Dispositif a ondes acoustiques de surface et procede de fabrication
FR2344180A1 (fr) Dispositif magnetostrictif a ondes elastiques de surface

Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: N.V. PHILIPS GLOEILAMPENFABRIEKEN

Effective date: 19870228