FR2601824B1 - Filtre d'onde elastique de surface - Google Patents

Filtre d'onde elastique de surface

Info

Publication number
FR2601824B1
FR2601824B1 FR878710021A FR8710021A FR2601824B1 FR 2601824 B1 FR2601824 B1 FR 2601824B1 FR 878710021 A FR878710021 A FR 878710021A FR 8710021 A FR8710021 A FR 8710021A FR 2601824 B1 FR2601824 B1 FR 2601824B1
Authority
FR
France
Prior art keywords
wave filter
elastic wave
surface elastic
filter
wave
Prior art date
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 - Lifetime
Application number
FR878710021A
Other languages
English (en)
Other versions
FR2601824A1 (fr
Inventor
Hiromi Yatsuda
Yoshihiko Takeuchi
Toichi Kohda
Shokichiro Yoshikawa
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.)
Japan Radio Co Ltd
Nihon Musen KK
Original Assignee
Japan Radio Co Ltd
Nihon Musen KK
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
Priority claimed from JP16746086A external-priority patent/JPS6324708A/ja
Priority claimed from JP18079886A external-priority patent/JPH07118625B2/ja
Application filed by Japan Radio Co Ltd, Nihon Musen KK filed Critical Japan Radio Co Ltd
Publication of FR2601824A1 publication Critical patent/FR2601824A1/fr
Application granted granted Critical
Publication of FR2601824B1 publication Critical patent/FR2601824B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H03H9/02535—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 devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02645—Waffle-iron or dot arrays
    • 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
    • H03H9/14547—Fan shaped; Tilted; Shifted; Slanted; Tapered; Arched; Stepped finger transducers
    • 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
    • H03H9/14558—Slanted, tapered or fan shaped transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • 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
    • H03H9/14526—Finger withdrawal

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
FR878710021A 1986-07-16 1987-07-16 Filtre d'onde elastique de surface Expired - Lifetime FR2601824B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16746086A JPS6324708A (ja) 1986-07-16 1986-07-16 弾性表面波フイルタ
JP18079886A JPH07118625B2 (ja) 1986-07-30 1986-07-30 斜め電極指弾性表面波フイルタ

Publications (2)

Publication Number Publication Date
FR2601824A1 FR2601824A1 (fr) 1988-01-22
FR2601824B1 true FR2601824B1 (fr) 1991-01-11

Family

ID=26491501

Family Applications (1)

Application Number Title Priority Date Filing Date
FR878710021A Expired - Lifetime FR2601824B1 (fr) 1986-07-16 1987-07-16 Filtre d'onde elastique de surface

Country Status (5)

Country Link
US (1) US4878036A (fr)
CA (1) CA1271817A (fr)
DE (1) DE3723545C2 (fr)
FR (1) FR2601824B1 (fr)
GB (1) GB2193060B (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2206257B (en) * 1987-05-26 1991-08-14 Clarion Co Ltd Surface acoustic wave device
JP2601543B2 (ja) * 1989-04-25 1997-04-16 日本無線株式会社 弾性表面波フィルタ
FR2650919B1 (fr) * 1989-08-10 1992-01-03 Dassault Electronique Dispositif acoustoelectrique a ondes de surface perfectionne
US5051645A (en) * 1990-01-30 1991-09-24 Johnson Service Company Acoustic wave H2 O phase-change sensor capable of self-cleaning and distinguishing air, water, dew, frost and ice
DE4227340C2 (de) * 1991-08-22 1995-09-21 Hitachi Ltd Oberflächenwellen-Bauelement
US5289073A (en) * 1992-11-09 1994-02-22 The United States Of America As Represented By The Secretary Of The Army Unidirectional surface acoustic wave transducer
US6023122A (en) * 1999-04-15 2000-02-08 Nortel Networks Corporation Surface wave devices with tapered transducers
JP2003501934A (ja) 1999-06-03 2003-01-14 テレ フィルター ツヴァイクニーダーラッスング デア ドーヴァー ジャーマニー ゲゼルシャフト ミット ベシュレンクテル ハフツング 音響表面波フィルタ
DE19943072B4 (de) * 1999-06-03 2004-05-13 Leibniz-Institut für Festkörper- und Werkstoffforschung e.V. Akustisches Oberflächenwellenfilter
US6791236B1 (en) 2000-10-11 2004-09-14 Yuri Abramov Method utilizing the saw velocity dispersion effect for weighting by shaping the electrode fingers of a saw interdigital transducer and apparatus produced thereby
US6856214B2 (en) * 2002-12-10 2005-02-15 Nortel Networks Limited Surface wave devices with low passband ripple
US6847272B2 (en) * 2003-02-28 2005-01-25 Northrop Grumman Corporation Weighted SAW reflector using distributed acoustic reflective dots
DE10314153A1 (de) * 2003-03-28 2004-10-07 Epcos Ag Oberflächenwellen-Anordnung zur breitbandigen Signalübertragung
JP2005150918A (ja) * 2003-11-12 2005-06-09 Murata Mfg Co Ltd 弾性表面波フィルタ
JP5042763B2 (ja) * 2007-09-28 2012-10-03 日本電波工業株式会社 弾性波フィルタ
JP4694609B2 (ja) * 2008-10-24 2011-06-08 日本電波工業株式会社 弾性波フィルタ
DE102017003855A1 (de) 2017-04-20 2018-10-25 Frank Grundmann Vorrichtung zur Erhöhung der Stabilität am unteren Erdungsring bei Elektrofiltern
DE102017007787A1 (de) 2017-08-17 2019-02-21 Frank Grundmann Vorrichtung zur Erleichterung der Ausrichtung von Elektroden bei Nass- Elektrofiltern
CN111165886B (zh) * 2020-02-26 2024-07-05 云南中烟工业有限责任公司 一种可变频声表面波电子烟

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1372052A (en) * 1971-01-05 1974-10-30 Mullard Ltd Electromechanical frequency selective devices
US3946342A (en) * 1973-08-10 1976-03-23 Texas Instruments Incorporated Weighting surface wave filters by withdrawing electrodes
DE2431620A1 (de) * 1974-07-02 1976-01-22 Fraunhofer Ges Forschung Schallwandler fuer akustische oberflaechenwellen
DE2435751A1 (de) * 1974-07-25 1976-02-12 Licentia Gmbh Akustisches oberflaechenwellenfilter
GB1512790A (en) * 1975-08-22 1978-06-01 Mullard Ltd Acoustic surface wave devices
US4055820A (en) * 1975-12-05 1977-10-25 Sperry Rand Corporation Reflective dot array for acoustic wave processing
GB1583295A (en) * 1977-04-07 1981-01-21 Woodhead R W Cases for throwing darts
US4134087A (en) * 1977-04-08 1979-01-09 Hughes Aircraft Company Amplitude weighted surface acoustic wave device
US4130813A (en) * 1977-05-23 1978-12-19 Raytheon Company Surface wave device having enhanced reflectivity gratings
JPS54844A (en) * 1977-06-03 1979-01-06 Matsushita Electric Ind Co Ltd Elastic surface wave filter
US4155056A (en) * 1977-08-25 1979-05-15 Bell Telephone Laboratories, Incorporated Cascaded grating resonator filters with external input-output couplers
FR2466139B1 (fr) * 1979-09-20 1988-03-04 Nat Res Dev Dispositif reflecteur d'ondes acoustiques superficielles
GB2060305B (en) * 1979-09-20 1983-05-25 Secr Defence Acoustic wave device including a reflective array
GB2108800B (en) * 1981-10-14 1985-03-20 Gen Electric Co Plc Surface acoustic wave devices
JPH0642618B2 (ja) * 1984-02-28 1994-06-01 日本無線株式会社 弾性表面波フィルタ
US4635008A (en) * 1985-11-19 1987-01-06 Sperry Corporation Dispersive SAW filter with tapered transducers

Also Published As

Publication number Publication date
GB2193060A (en) 1988-01-27
US4878036A (en) 1989-10-31
DE3723545C2 (de) 1996-10-10
GB2193060B (en) 1991-04-03
FR2601824A1 (fr) 1988-01-22
CA1271817A (fr) 1990-07-17
DE3723545A1 (de) 1988-03-03
GB8716588D0 (en) 1987-08-19

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