JPS5549019A - Composite resonator - Google Patents

Composite resonator

Info

Publication number
JPS5549019A
JPS5549019A JP12237878A JP12237878A JPS5549019A JP S5549019 A JPS5549019 A JP S5549019A JP 12237878 A JP12237878 A JP 12237878A JP 12237878 A JP12237878 A JP 12237878A JP S5549019 A JPS5549019 A JP S5549019A
Authority
JP
Japan
Prior art keywords
elastic wave
resonance
wave
converted
elastic
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
JP12237878A
Other languages
Japanese (ja)
Inventor
Nobuaki Furuya
Yukihiro Kino
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 JP12237878A priority Critical patent/JPS5549019A/en
Publication of JPS5549019A publication Critical patent/JPS5549019A/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
    • H03H9/02614—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)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To provide resonance of only needed frequencies even in a frequency band more than hundreds MHz by coupling thickness vibrating resonators by a surface elastic wave. CONSTITUTION:High-frequency electric inputs from terminals 5 and 6 are converted into elastic wave 15 by a transducer composed of piezoelectric body 3 and electrodes 2 and 4 and the wave radiated into elastic body 1 is reflected on the top surface of elastic body 1 to obtain elastic wave 16 and further reflected by the reverse surface of it to obtain elastic wave 15, thereby causing thickness resonance through repetitive operations mentioned above. On the top surface of a resonator, periodic grooves 7 and 8 are made and when elastic wave 15 reaches groove 7, part of it is converted into surface elastic wave 17. Although the sectional shape of groove 7 is not limited to a triangle in this case, period P should agree with the wave-length of surface elastic wave 17 to be converted. In this way, elastic wave 15 is selectively converted into surface elastic wave 17 only at the time of resonance of aimed resonance frequency (fN) among many resonance frequencies.
JP12237878A 1978-10-03 1978-10-03 Composite resonator Pending JPS5549019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12237878A JPS5549019A (en) 1978-10-03 1978-10-03 Composite resonator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12237878A JPS5549019A (en) 1978-10-03 1978-10-03 Composite resonator

Publications (1)

Publication Number Publication Date
JPS5549019A true JPS5549019A (en) 1980-04-08

Family

ID=14834343

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12237878A Pending JPS5549019A (en) 1978-10-03 1978-10-03 Composite resonator

Country Status (1)

Country Link
JP (1) JPS5549019A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006329187A (en) * 2005-05-23 2006-12-07 Snecma Calibration method for mass of component attached around rotor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678304A (en) * 1969-11-25 1972-07-18 Reginald Frederick Humphryes Acoustic wave device for converting bulk mode waves to surface waves and vice versa

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678304A (en) * 1969-11-25 1972-07-18 Reginald Frederick Humphryes Acoustic wave device for converting bulk mode waves to surface waves and vice versa

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006329187A (en) * 2005-05-23 2006-12-07 Snecma Calibration method for mass of component attached around rotor

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