JPS55105427A - Surface wave device - Google Patents

Surface wave device

Info

Publication number
JPS55105427A
JPS55105427A JP1314279A JP1314279A JPS55105427A JP S55105427 A JPS55105427 A JP S55105427A JP 1314279 A JP1314279 A JP 1314279A JP 1314279 A JP1314279 A JP 1314279A JP S55105427 A JPS55105427 A JP S55105427A
Authority
JP
Japan
Prior art keywords
groove
grooves
substrate
surface wave
input
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
JP1314279A
Other languages
Japanese (ja)
Inventor
Kiyoharu Shibata
Kazuyuki Onoe
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.)
Kyoto Ceramic Co Ltd
Kyocera Corp
Original Assignee
Kyoto Ceramic Co Ltd
Kyocera Corp
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 Kyoto Ceramic Co Ltd, Kyocera Corp filed Critical Kyoto Ceramic Co Ltd
Priority to JP1314279A priority Critical patent/JPS55105427A/en
Publication of JPS55105427A publication Critical patent/JPS55105427A/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
    • H03H9/02614—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves
    • H03H9/02622—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the surface, including back surface

Landscapes

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

Abstract

PURPOSE:To enhance the attenuation characteristics by providing the groove crossing to the longer direction of the substrate right under the surface wave propagation region. CONSTITUTION:Groove 8 is provided right under surface wave propagation region 7 covering from input electrode 2 through output electrode 3. Thus the bulk wave can be eliminated. To ensure more elimination effect, the plural number of grooves can be provided. The depth of the groove is decided in relation to the thickness of the substrate. Groove 8 is set most effectively at the center of the input and output electrodes in view of the propagation of the bulk wave. And the 2nd and 3rd grooves are provided preferably at the center between groove 8 and the input and output electrodes each. The depth of the grooves must be decided in consideration of the strength of the substrate.
JP1314279A 1979-02-06 1979-02-06 Surface wave device Pending JPS55105427A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1314279A JPS55105427A (en) 1979-02-06 1979-02-06 Surface wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1314279A JPS55105427A (en) 1979-02-06 1979-02-06 Surface wave device

Publications (1)

Publication Number Publication Date
JPS55105427A true JPS55105427A (en) 1980-08-13

Family

ID=11824900

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1314279A Pending JPS55105427A (en) 1979-02-06 1979-02-06 Surface wave device

Country Status (1)

Country Link
JP (1) JPS55105427A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62201527U (en) * 1986-06-12 1987-12-22
JPH01209811A (en) * 1988-02-18 1989-08-23 Toshiba Corp Surface acoustic wave filter and its manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62201527U (en) * 1986-06-12 1987-12-22
JPH01209811A (en) * 1988-02-18 1989-08-23 Toshiba Corp Surface acoustic wave filter and its manufacture

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