JPS5419634A - Elastic surface wave transducer - Google Patents

Elastic surface wave transducer

Info

Publication number
JPS5419634A
JPS5419634A JP8424477A JP8424477A JPS5419634A JP S5419634 A JPS5419634 A JP S5419634A JP 8424477 A JP8424477 A JP 8424477A JP 8424477 A JP8424477 A JP 8424477A JP S5419634 A JPS5419634 A JP S5419634A
Authority
JP
Japan
Prior art keywords
surface wave
elastic surface
wave transducer
discontinity
auido
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.)
Pending
Application number
JP8424477A
Other languages
Japanese (ja)
Inventor
Kentaro Hanma
Takeshi Hazama
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP8424477A priority Critical patent/JPS5419634A/en
Publication of JPS5419634A publication Critical patent/JPS5419634A/en
Pending 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
    • H03H9/14552—Transducers of particular shape or position comprising split fingers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

PURPOSE:To suppress triple transit echo, by zeroing the reflection based on the discontinity of auido impedance, through the arrangement of fingers of an inter digital transducer with a given distance.
JP8424477A 1977-07-15 1977-07-15 Elastic surface wave transducer Pending JPS5419634A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8424477A JPS5419634A (en) 1977-07-15 1977-07-15 Elastic surface wave transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8424477A JPS5419634A (en) 1977-07-15 1977-07-15 Elastic surface wave transducer

Publications (1)

Publication Number Publication Date
JPS5419634A true JPS5419634A (en) 1979-02-14

Family

ID=13825040

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8424477A Pending JPS5419634A (en) 1977-07-15 1977-07-15 Elastic surface wave transducer

Country Status (1)

Country Link
JP (1) JPS5419634A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56107871A (en) * 1980-01-23 1981-08-27 Sumitomo Metal Ind Ltd Steel belt edge working machine
JPS58120461A (en) * 1982-01-12 1983-07-18 Aichi Steel Works Ltd Method and apparatus for grinding end face of steel material
JPS60201711A (en) * 1984-03-27 1985-10-12 Toshiba Corp Surface acoustic wave device
JPS62106751U (en) * 1985-12-26 1987-07-08
JPS6427306A (en) * 1987-04-15 1989-01-30 Hitachi Ltd Surface acoustic wave filter
US5023605A (en) * 1988-11-25 1991-06-11 Gte Laboratories, Inc. Patterned transducer apparatus for correcting spurious signals in said devices
JPH03294162A (en) * 1990-04-09 1991-12-25 Nippon Steel Corp Manufacture of steel plate with little burr
JP2013183224A (en) * 2012-02-29 2013-09-12 Kyocera Crystal Device Corp Surface acoustic wave element
JP2015523828A (en) * 2012-08-01 2015-08-13 エプコス アクチエンゲゼルシャフトＥｐｃｏｓ Ａｇ Electroacoustic transducer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56107871A (en) * 1980-01-23 1981-08-27 Sumitomo Metal Ind Ltd Steel belt edge working machine
JPS58120461A (en) * 1982-01-12 1983-07-18 Aichi Steel Works Ltd Method and apparatus for grinding end face of steel material
JPS60201711A (en) * 1984-03-27 1985-10-12 Toshiba Corp Surface acoustic wave device
JPS62106751U (en) * 1985-12-26 1987-07-08
JPS6427306A (en) * 1987-04-15 1989-01-30 Hitachi Ltd Surface acoustic wave filter
US5023605A (en) * 1988-11-25 1991-06-11 Gte Laboratories, Inc. Patterned transducer apparatus for correcting spurious signals in said devices
JPH03294162A (en) * 1990-04-09 1991-12-25 Nippon Steel Corp Manufacture of steel plate with little burr
JP2013183224A (en) * 2012-02-29 2013-09-12 Kyocera Crystal Device Corp Surface acoustic wave element
JP2015523828A (en) * 2012-08-01 2015-08-13 エプコス アクチエンゲゼルシャフトＥｐｃｏｓ Ａｇ Electroacoustic transducer
US9590589B2 (en) 2012-08-01 2017-03-07 Epcos Ag Electroacoustic transducer having a piezoelectric substrate with electrode fingers divided into four groups

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