JPS5745710A - Surface acoustic wave filter - Google Patents

Surface acoustic wave filter

Info

Publication number
JPS5745710A
JPS5745710A JP12058280A JP12058280A JPS5745710A JP S5745710 A JPS5745710 A JP S5745710A JP 12058280 A JP12058280 A JP 12058280A JP 12058280 A JP12058280 A JP 12058280A JP S5745710 A JPS5745710 A JP S5745710A
Authority
JP
Japan
Prior art keywords
acoustic wave
wave filter
surface acoustic
electrodes
plane
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
JP12058280A
Other languages
Japanese (ja)
Inventor
Junji Inui
Hideki Omori
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP12058280A priority Critical patent/JPS5745710A/en
Publication of JPS5745710A publication Critical patent/JPS5745710A/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
    • H03H9/02921—Measures for preventing electric discharge due to pyroelectricity

Landscapes

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

Abstract

PURPOSE:To prevent the deterioration of insulation resistance between electrodes and to increase the manufacturing yield and to achieve cost down, by taking the electrode forming plane of a substrate of a surface acoustic wave filter as a minus plane of the polarization component of itself. CONSTITUTION:A substrate 7 is formed through mirror-polish of a plane having minus component of a polarized component 11 of an LiNbO3 wafer, and electrodes 8, 9 are formed on the mirror polished surface. Thus formed surface acoustic wave filter is decreased in the frequency of insulation break-down between electrodes, and the rate of deficient insulation can almost be zeroed.
JP12058280A 1980-09-02 1980-09-02 Surface acoustic wave filter Pending JPS5745710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12058280A JPS5745710A (en) 1980-09-02 1980-09-02 Surface acoustic wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12058280A JPS5745710A (en) 1980-09-02 1980-09-02 Surface acoustic wave filter

Publications (1)

Publication Number Publication Date
JPS5745710A true JPS5745710A (en) 1982-03-15

Family

ID=14789840

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12058280A Pending JPS5745710A (en) 1980-09-02 1980-09-02 Surface acoustic wave filter

Country Status (1)

Country Link
JP (1) JPS5745710A (en)

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