JPS55141814A - Surface acoustic wave element - Google Patents

Surface acoustic wave element

Info

Publication number
JPS55141814A
JPS55141814A JP5014379A JP5014379A JPS55141814A JP S55141814 A JPS55141814 A JP S55141814A JP 5014379 A JP5014379 A JP 5014379A JP 5014379 A JP5014379 A JP 5014379A JP S55141814 A JPS55141814 A JP S55141814A
Authority
JP
Japan
Prior art keywords
acoustic wave
temperature coefficient
surface acoustic
film
piezoelectric
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.)
Granted
Application number
JP5014379A
Other languages
Japanese (ja)
Other versions
JPS5941603B2 (en
Inventor
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 JP5014379A priority Critical patent/JPS5941603B2/en
Publication of JPS55141814A publication Critical patent/JPS55141814A/en
Publication of JPS5941603B2 publication Critical patent/JPS5941603B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
    • H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
    • H03H3/08—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves
    • H03H3/10—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves for obtaining desired frequency or temperature coefficient

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

PURPOSE:To zero the temperature coefficient of the entire elements, by removing a part of the piezoelectric film or adding separate piezoelectric film. CONSTITUTION:The comb type electrodes 1, 2 are formed on the elastic substrate 7' and the piezoelectric substance film 9 is formed on it, to constitute the surface acoustic wave element. Further, if the temperature coefficient of delay time of the piezoelectric film 9 is positive and that of the elastic substrate is negative, the temperature coefficient of delayd time as the entire elements can be zeroed by removing a part of the piezoelectric film 9 of the surface acoustic wave propagation path, or forming piezoelectric substance film 12 having suitable temperature coefficient on the propagation path.
JP5014379A 1979-04-23 1979-04-23 surface acoustic wave device Expired JPS5941603B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5014379A JPS5941603B2 (en) 1979-04-23 1979-04-23 surface acoustic wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5014379A JPS5941603B2 (en) 1979-04-23 1979-04-23 surface acoustic wave device

Publications (2)

Publication Number Publication Date
JPS55141814A true JPS55141814A (en) 1980-11-06
JPS5941603B2 JPS5941603B2 (en) 1984-10-08

Family

ID=12850934

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5014379A Expired JPS5941603B2 (en) 1979-04-23 1979-04-23 surface acoustic wave device

Country Status (1)

Country Link
JP (1) JPS5941603B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4381469A (en) * 1979-07-20 1983-04-26 Murata Manufacturing Company, Ltd. Temperature stable piezoelectric device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4381469A (en) * 1979-07-20 1983-04-26 Murata Manufacturing Company, Ltd. Temperature stable piezoelectric device

Also Published As

Publication number Publication date
JPS5941603B2 (en) 1984-10-08

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