JPS56149111A - Elastic surface wave device - Google Patents

Elastic surface wave device

Info

Publication number
JPS56149111A
JPS56149111A JP5227380A JP5227380A JPS56149111A JP S56149111 A JPS56149111 A JP S56149111A JP 5227380 A JP5227380 A JP 5227380A JP 5227380 A JP5227380 A JP 5227380A JP S56149111 A JPS56149111 A JP S56149111A
Authority
JP
Japan
Prior art keywords
surface wave
insulator
elastic surface
wave device
circumference
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
JP5227380A
Other languages
Japanese (ja)
Inventor
Yoshifumi Toda
Noboru Wakatsuki
Toshiyuki Morita
Hideaki Ito
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 JP5227380A priority Critical patent/JPS56149111A/en
Publication of JPS56149111A publication Critical patent/JPS56149111A/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
    • H03H9/05—Holders; Supports
    • H03H9/058—Holders; Supports for surface acoustic wave devices
    • H03H9/0585—Holders; Supports for surface acoustic wave devices consisting of an adhesive layer
    • 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

Abstract

PURPOSE:To prevent the discharge of an elastic surface wave element at end surfaces, by providing an insulator between the circumference of the element and the bottom plate of a metallic case. CONSTITUTION:The circumference of elastic surface wave element 18 mounted on bottom plate 17 of metallic case 16 is covered with insulator 19. As this insulator 19, resin having excellent electric insulating property is favorably used and epoxy resin, silicone resin, etc., for example, are suitable. When Eb>>Ea where the dielectric strength of the insulator is Eb and that of air is Ea, the discharge of the element at end surfaces is prevented.
JP5227380A 1980-04-22 1980-04-22 Elastic surface wave device Pending JPS56149111A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5227380A JPS56149111A (en) 1980-04-22 1980-04-22 Elastic surface wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5227380A JPS56149111A (en) 1980-04-22 1980-04-22 Elastic surface wave device

Publications (1)

Publication Number Publication Date
JPS56149111A true JPS56149111A (en) 1981-11-18

Family

ID=12910169

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5227380A Pending JPS56149111A (en) 1980-04-22 1980-04-22 Elastic surface wave device

Country Status (1)

Country Link
JP (1) JPS56149111A (en)

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