NO901387L - Akustisk-elektrisk overflateboelge-transduser. - Google Patents

Akustisk-elektrisk overflateboelge-transduser.

Info

Publication number
NO901387L
NO901387L NO90901387A NO901387A NO901387L NO 901387 L NO901387 L NO 901387L NO 90901387 A NO90901387 A NO 90901387A NO 901387 A NO901387 A NO 901387A NO 901387 L NO901387 L NO 901387L
Authority
NO
Norway
Prior art keywords
acoustic
surface wave
electrical surface
wave transducers
transducers
Prior art date
Application number
NO90901387A
Other languages
English (en)
Other versions
NO901387D0 (no
NO176590B (no
Inventor
Benoit Noel
Jean-Louis Foure
Original Assignee
Dassault Electronique
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 Dassault Electronique filed Critical Dassault Electronique
Publication of NO901387D0 publication Critical patent/NO901387D0/no
Publication of NO901387L publication Critical patent/NO901387L/no
Publication of NO176590B publication Critical patent/NO176590B/no

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
    • H03H9/14555—Chirped 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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
    • H03H9/0285—Means for compensation or elimination of undesirable effects of reflections of triple transit echo
    • 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
    • H03H9/14561—Arched, curved or ring 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
    • H03H9/02—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
    • H03H9/14594—Plan-rotated or plan-tilted 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
    • H03H9/30—Time-delay networks
    • H03H9/42—Time-delay networks using surface acoustic waves
    • H03H9/44—Frequency dependent delay lines, e.g. dispersive delay lines
    • 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
    • H03H9/02992—Details of bus bars, contact pads or other electrical connections for finger electrodes
    • 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
    • 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
    • H03H9/14552—Transducers of particular shape or position comprising split fingers

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
NO901387A 1989-08-10 1990-03-26 Akustisk-elektrisk overflatebölge-transduser NO176590B (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8910784A FR2650919B1 (fr) 1989-08-10 1989-08-10 Dispositif acoustoelectrique a ondes de surface perfectionne

Publications (3)

Publication Number Publication Date
NO901387D0 NO901387D0 (no) 1990-03-26
NO901387L true NO901387L (no) 1991-02-11
NO176590B NO176590B (no) 1995-01-16

Family

ID=9384645

Family Applications (1)

Application Number Title Priority Date Filing Date
NO901387A NO176590B (no) 1989-08-10 1990-03-26 Akustisk-elektrisk overflatebölge-transduser

Country Status (5)

Country Link
US (1) US5142185A (no)
EP (1) EP0412854B1 (no)
DE (1) DE69012482T2 (no)
FR (1) FR2650919B1 (no)
NO (1) NO176590B (no)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19808549B4 (de) * 1998-02-28 2008-07-10 Robert Bosch Gmbh Mikromechanische Kammstruktur sowie Beschleunigungssensor und Antrieb mit dieser Kammstruktur
US6346761B1 (en) * 1999-01-27 2002-02-12 Hitachi Denshi Kabushiki Kaisha Surface acoustic wave device capable of suppressing spurious response due to non-harmonic higher-order modes
JP3863712B2 (ja) * 2000-09-06 2006-12-27 株式会社日立製作所 弾性表面波共振器
JP3384403B2 (ja) * 2001-03-01 2003-03-10 株式会社村田製作所 弾性表面波装置、通信装置
JP2011182220A (ja) * 2010-03-02 2011-09-15 Panasonic Corp 弾性波共振器及びこれを用いた縦結合二重モードフィルタ、ラダー型フィルタ

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800247A (en) * 1971-06-23 1974-03-26 Raytheon Co Surface wave structure
US3845420A (en) * 1973-03-02 1974-10-29 Raytheon Co Surface acoustic wave phase control device
GB1495147A (en) * 1974-08-16 1977-12-14 Secr Defence Surface acoustic wave devices
JPS5333557A (en) * 1976-08-24 1978-03-29 Toshiba Corp Elastic surface wave element
EP0057555B1 (en) * 1981-02-04 1985-11-27 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave device
FR2520171A1 (fr) * 1982-01-15 1983-07-22 Thomson Csf Ligne a retard acoustique dispersive a ondes de surface
GB2145893B (en) * 1983-08-30 1987-01-07 Nat Res Dev Surface acoustic wave device
GB2193060B (en) * 1986-07-16 1991-04-03 Japan Radio Co Ltd Surface elastic wave filter
US4912356A (en) * 1989-05-18 1990-03-27 The United States Of America As Represented By The Secretary Of The Army Saw slanted array correlator (SAC) with separate amplitude compensation channel

Also Published As

Publication number Publication date
DE69012482D1 (de) 1994-10-20
EP0412854A1 (fr) 1991-02-13
US5142185A (en) 1992-08-25
NO901387D0 (no) 1990-03-26
NO176590B (no) 1995-01-16
FR2650919B1 (fr) 1992-01-03
FR2650919A1 (fr) 1991-02-15
DE69012482T2 (de) 1995-02-02
EP0412854B1 (fr) 1994-09-14

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application