JPS55115711A - Bending vibrator - Google Patents

Bending vibrator

Info

Publication number
JPS55115711A
JPS55115711A JP2359579A JP2359579A JPS55115711A JP S55115711 A JPS55115711 A JP S55115711A JP 2359579 A JP2359579 A JP 2359579A JP 2359579 A JP2359579 A JP 2359579A JP S55115711 A JPS55115711 A JP S55115711A
Authority
JP
Japan
Prior art keywords
alpo4
phi
theta
psi
temperature
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
JP2359579A
Other languages
Japanese (ja)
Inventor
Hirofumi Kawashima
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP2359579A priority Critical patent/JPS55115711A/en
Publication of JPS55115711A publication Critical patent/JPS55115711A/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
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/21—Crystal tuning forks

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To increase the frequency-temperature characteristics, by limiting the cut-out angle of AlPO4. CONSTITUTION:The diapason type bending oscillation unit using AlPO4 can realize greater electro-mechanical coupling coefficient. Taking the rotation angles with the crystal axes X, Y, Z, as theta, phi, psi and taking the width and length as W, L, the resonant frequency (f) can be determined. By obtaining differentiation characteristics by temperature (t) for (f), the temperature coefficient alpha can be obtained as shown in equation-(2). With the theoretical analysis as to theta, phi and psi, as 0 deg.-20 deg. for theta, 80 deg.-100 deg. for phi and 0 deg.-10 deg. for psi, the primary temperature coefficient alpha at the bending mode of AlPO4 can be minimized.
JP2359579A 1979-03-01 1979-03-01 Bending vibrator Pending JPS55115711A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2359579A JPS55115711A (en) 1979-03-01 1979-03-01 Bending vibrator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2359579A JPS55115711A (en) 1979-03-01 1979-03-01 Bending vibrator

Publications (1)

Publication Number Publication Date
JPS55115711A true JPS55115711A (en) 1980-09-05

Family

ID=12114936

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2359579A Pending JPS55115711A (en) 1979-03-01 1979-03-01 Bending vibrator

Country Status (1)

Country Link
JP (1) JPS55115711A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4992694A (en) * 1988-11-25 1991-02-12 AVL Gesellschaft fur Verbrennungskraftmaschinen und Messtechnik m.b.H. Prof.Dr.Dr.h.c. Hans List Piezoelectric crystal element on the basis of GAPO4
JPH07154194A (en) * 1993-07-20 1995-06-16 Avl Ges Verbrennungskraftmas & Messtech Mbh Piezoelectric crystal element
US5777419A (en) * 1995-08-15 1998-07-07 Motorola Inc. Surface acoustic wave device with minimized bulk scattering

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4992694A (en) * 1988-11-25 1991-02-12 AVL Gesellschaft fur Verbrennungskraftmaschinen und Messtechnik m.b.H. Prof.Dr.Dr.h.c. Hans List Piezoelectric crystal element on the basis of GAPO4
JPH07154194A (en) * 1993-07-20 1995-06-16 Avl Ges Verbrennungskraftmas & Messtech Mbh Piezoelectric crystal element
US5777419A (en) * 1995-08-15 1998-07-07 Motorola Inc. Surface acoustic wave device with minimized bulk scattering

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