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JPS5711521A - Elastic surface wave resonator - Google Patents

Elastic surface wave resonator

Info

Publication number
JPS5711521A
JPS5711521A JP8514680A JP8514680A JPS5711521A JP S5711521 A JPS5711521 A JP S5711521A JP 8514680 A JP8514680 A JP 8514680A JP 8514680 A JP8514680 A JP 8514680A JP S5711521 A JPS5711521 A JP S5711521A
Authority
JP
Japan
Prior art keywords
electrode
electrodes
surface waves
constitution
surface 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
JP8514680A
Other languages
Japanese (ja)
Inventor
Teruo Kurokawa
Nobuki Yamaji
Kiyobumi Yamashita
Yoshihiko Yasuhara
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 JP8514680A priority Critical patent/JPS5711521A/en
Publication of JPS5711521A publication Critical patent/JPS5711521A/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 elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/14561—Arched, curved or ring shaped transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/14547—Fan shaped; Tilted; Shifted; Slanted; Tapered; Arched; Stepped finger transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/25—Constructional features of resonators using surface acoustic waves

Landscapes

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

Abstract

PURPOSE:To allow convergence without phase shift for the surface waves from an exciting electrode, by forming the shape of reflection electrodes provided on a major plane of a piezoelectric substrate for an RF converter for a VTR so that the surface waves can effectively be reflected. CONSTITUTION:A signal voltage in a prescribed frequency applied between terminals 121 and 122 of an exciting electrode 12 formed on one major plane of a piezoelectric substrate 11 such as LiTaO3, is reflected with reflection electrodes 13, 14 at the both sides through the use of surface waves of the substrate 11 and fed back to the electrode 12 again for direct oscillation in a prescribed frequency. The electrodes 13, 14 with this constitution are formed as a shape which can reflect the surface waves from the electrode 12 effectively, e.g., parabola, and the width L1 of the electrode 12 is formed smaller than the width L2 of the electrodes 13, 14 substantially. Further, the electrodes 13, 14 are formed gradually smaller from the opposing sides like reflection electrodes 23, 24. With this constitution, the surface waves from the electrode 12 are fed back to the electrode 12 efficiently without phase shift.
JP8514680A 1980-06-25 1980-06-25 Elastic surface wave resonator Pending JPS5711521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8514680A JPS5711521A (en) 1980-06-25 1980-06-25 Elastic surface wave resonator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8514680A JPS5711521A (en) 1980-06-25 1980-06-25 Elastic surface wave resonator

Publications (1)

Publication Number Publication Date
JPS5711521A true JPS5711521A (en) 1982-01-21

Family

ID=13850513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8514680A Pending JPS5711521A (en) 1980-06-25 1980-06-25 Elastic surface wave resonator

Country Status (1)

Country Link
JP (1) JPS5711521A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59200519A (en) * 1983-04-28 1984-11-13 Toshiba Corp Surface acoustic wave resonator
JPS6147526U (en) * 1984-08-29 1986-03-29 株式会社大真空 surface acoustic wave device
JP2007097117A (en) * 2005-03-28 2007-04-12 Kyocera Corp Surface acoustic wave resonator, surface acoustic wave filter, surface acoustic wave duplexer, and communication apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4932236A (en) * 1972-07-21 1974-03-23
JPS5115987A (en) * 1974-07-31 1976-02-07 Hagiwara Denki Kk ONKYODENKIKYOSHINSHI

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4932236A (en) * 1972-07-21 1974-03-23
JPS5115987A (en) * 1974-07-31 1976-02-07 Hagiwara Denki Kk ONKYODENKIKYOSHINSHI

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59200519A (en) * 1983-04-28 1984-11-13 Toshiba Corp Surface acoustic wave resonator
JPS6147526U (en) * 1984-08-29 1986-03-29 株式会社大真空 surface acoustic wave device
JP2007097117A (en) * 2005-03-28 2007-04-12 Kyocera Corp Surface acoustic wave resonator, surface acoustic wave filter, surface acoustic wave duplexer, and communication apparatus

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