JPS54111256A - Elastic surface wave element - Google Patents

Elastic surface wave element

Info

Publication number
JPS54111256A
JPS54111256A JP1894578A JP1894578A JPS54111256A JP S54111256 A JPS54111256 A JP S54111256A JP 1894578 A JP1894578 A JP 1894578A JP 1894578 A JP1894578 A JP 1894578A JP S54111256 A JPS54111256 A JP S54111256A
Authority
JP
Japan
Prior art keywords
surface wave
elastic surface
transducers
piezo
electric
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
JP1894578A
Other languages
Japanese (ja)
Inventor
Atsushi Kobayashi
Kentaro Setsune
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1894578A priority Critical patent/JPS54111256A/en
Publication of JPS54111256A publication Critical patent/JPS54111256A/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
    • H03H9/02535—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

Landscapes

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

Abstract

PURPOSE:To compensate the irregularity of characteristic by arranging elastic surface wave absorbing materials between I/O piezo-electric transducers. CONSTITUTION:Piezo-electric transducers 2 to 4 are formed on piezo-electric substrate 1, and I/O earth terminals 5, 6 and 7 are provided.Transducer 2 is arranged in the position opposite to transducers 3 and 4, and transducers 3 and 4 are arranged in position different in respect to the elastic surface wave propagation direction, so that the elastic surface wave transmitted from transducer 2 may be taken out as electric signals having a fixed phase difference by transducers 3 and 4. Elastic surface wave absorbing materials 10 such as Si gum is provided to prevent edge face reflection, and adhesive tape 8 of the gum-system adhesive is sticked and is stripped again to be sticked to a slipped position, thereby performing fine adjustment. Further, when a proper jig is used to arranged elastic surface wave absorbing materials, the irregularity at a mass production time can be compensated easily. Meanwhile, the degree of adjustment is determined by the length and the position of the tape which intersects respective surface wave propagation pathes.
JP1894578A 1978-02-20 1978-02-20 Elastic surface wave element Pending JPS54111256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1894578A JPS54111256A (en) 1978-02-20 1978-02-20 Elastic surface wave element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1894578A JPS54111256A (en) 1978-02-20 1978-02-20 Elastic surface wave element

Publications (1)

Publication Number Publication Date
JPS54111256A true JPS54111256A (en) 1979-08-31

Family

ID=11985776

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1894578A Pending JPS54111256A (en) 1978-02-20 1978-02-20 Elastic surface wave element

Country Status (1)

Country Link
JP (1) JPS54111256A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202511A (en) * 1985-03-06 1986-09-08 Japan Radio Co Ltd Surface acoustic wave filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61202511A (en) * 1985-03-06 1986-09-08 Japan Radio Co Ltd Surface acoustic wave filter

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