JPS6114688B2 - - Google Patents

Info

Publication number
JPS6114688B2
JPS6114688B2 JP12961577A JP12961577A JPS6114688B2 JP S6114688 B2 JPS6114688 B2 JP S6114688B2 JP 12961577 A JP12961577 A JP 12961577A JP 12961577 A JP12961577 A JP 12961577A JP S6114688 B2 JPS6114688 B2 JP S6114688B2
Authority
JP
Japan
Prior art keywords
electrode
surface acoustic
acoustic wave
electrodes
present
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
Application number
JP12961577A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5463651A (en
Inventor
Jun Yamada
Takeshi Hazama
Yoshihiko Noro
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 JP12961577A priority Critical patent/JPS5463651A/ja
Publication of JPS5463651A publication Critical patent/JPS5463651A/ja
Publication of JPS6114688B2 publication Critical patent/JPS6114688B2/ja
Granted 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 elements; 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 elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02881—Means for compensation or elimination of undesirable effects of diffraction of wave beam
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—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 elements; 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)
JP12961577A 1977-10-31 1977-10-31 Elastic surface wave device Granted JPS5463651A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12961577A JPS5463651A (en) 1977-10-31 1977-10-31 Elastic surface wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12961577A JPS5463651A (en) 1977-10-31 1977-10-31 Elastic surface wave device

Publications (2)

Publication Number Publication Date
JPS5463651A JPS5463651A (en) 1979-05-22
JPS6114688B2 true JPS6114688B2 (enrdf_load_stackoverflow) 1986-04-19

Family

ID=15013835

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12961577A Granted JPS5463651A (en) 1977-10-31 1977-10-31 Elastic surface wave device

Country Status (1)

Country Link
JP (1) JPS5463651A (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57199316A (en) * 1981-06-01 1982-12-07 Maruyasu Kogyo Kk Surface acoustic wave filter
JP2664228B2 (ja) * 1988-12-23 1997-10-15 株式会社日立製作所 弾性表面波装置
DE10135871B4 (de) * 2001-07-24 2012-10-25 Epcos Ag Wandler für Oberflächenwellen mit verbesserter Unterdrückung störender Anregung

Also Published As

Publication number Publication date
JPS5463651A (en) 1979-05-22

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