JPS5466792A - Surface acoustic wave element - Google Patents

Surface acoustic wave element

Info

Publication number
JPS5466792A
JPS5466792A JP13306977A JP13306977A JPS5466792A JP S5466792 A JPS5466792 A JP S5466792A JP 13306977 A JP13306977 A JP 13306977A JP 13306977 A JP13306977 A JP 13306977A JP S5466792 A JPS5466792 A JP S5466792A
Authority
JP
Japan
Prior art keywords
surface acoustic
acoustic wave
substrate
temperature coefficient
wave
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
JP13306977A
Other languages
Japanese (ja)
Inventor
Masao Mashita
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13306977A priority Critical patent/JPS5466792A/en
Publication of JPS5466792A publication Critical patent/JPS5466792A/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
    • H03H9/02834—Means for compensation or elimination of undesirable effects of temperature influence
    • 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
    • H03H9/02543—Characteristics of substrate, e.g. cutting angles
    • H03H9/02574—Characteristics of substrate, e.g. cutting angles of combined substrates, multilayered substrates, piezoelectrical layers on not-piezoelectrical substrate
    • 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 obtain the element greater in coupling coefficient and of zero temperature coefficient, by providing the temperature coefficient of opposite polarity of the propagation time of surface acoustic wave on the substrate provided on the crystal substrate, the piezoelectric film less than the wave length of surface accoustic wave in thickness and the means generating the surface accoustic waves. CONSTITUTION:The crystal substrate 5 and the piezoelectric film, e.g, ZnO film 6, in which the temperature coefficient of the propagation time for the surface acoustic wave for the substrate 5 placed on the substrate is of opposite polarity and the thickness is less than the wave length of the surface acoustic waves, for example, 0.19lambda, and the means generating the surface acoustic wave, comb type electrode on the film 6, are provided, achieving greater coupling coefficient and zero temperature coefficient.
JP13306977A 1977-11-08 1977-11-08 Surface acoustic wave element Pending JPS5466792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13306977A JPS5466792A (en) 1977-11-08 1977-11-08 Surface acoustic wave element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13306977A JPS5466792A (en) 1977-11-08 1977-11-08 Surface acoustic wave element

Publications (1)

Publication Number Publication Date
JPS5466792A true JPS5466792A (en) 1979-05-29

Family

ID=15096103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13306977A Pending JPS5466792A (en) 1977-11-08 1977-11-08 Surface acoustic wave element

Country Status (1)

Country Link
JP (1) JPS5466792A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6972508B2 (en) 2000-04-28 2005-12-06 Murata Manufacturing Co., Ltd. Surface acoustic wave device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6972508B2 (en) 2000-04-28 2005-12-06 Murata Manufacturing Co., Ltd. Surface acoustic wave device

Similar Documents

Publication Publication Date Title
JPS56116317A (en) Material for elastic surface wave
JPS5466792A (en) Surface acoustic wave element
JPS55159612A (en) Elastic surface wave element
HK48282A (en) Piezo-electric vibrator
FR2357865A1 (en) Bench mark system using elastic surface waves - comprises substrate on which waves are propagated in perpendicular directions to be picked up by transducer probe
JPS53123051A (en) Filter for surface slip wave
JPS5232650A (en) Surface elastic wave element
JPS5224485A (en) Quartz vibrator
JPS5768925A (en) Piezoelectric device
JPS5686598A (en) Manufacture for ultrasonic wave transducer
JPS5713802A (en) Elastic surface wave oscillator
JPS55141814A (en) Surface acoustic wave element
JPS53132246A (en) Elastic surface wave filter
JPS5568725A (en) Elastic surface wave filter
JPS5438790A (en) Piezoelectric material for elastic surface wave element
JPS55151810A (en) Elastic surface wave filter
JPS5475290A (en) Linbo3 substrate for elastic surface wave
JPS5534513A (en) Elastic surface wave device using one-directional transducer
JPS57155825A (en) Surface wave device
JPS5647118A (en) Surface elastic wave filter of band-passing type
JPS57142017A (en) Surface acoustic wave device
JPS5419391A (en) Crystal vibrator
JPS51114846A (en) Acoustic surface wave device
JPS5332692A (en) Short side piezoelectric vibrator
JPS53116796A (en) Lithium tantalate vibrator