JPS55143814A - Piezoelectric vibrator - Google Patents

Piezoelectric vibrator

Info

Publication number
JPS55143814A
JPS55143814A JP4928079A JP4928079A JPS55143814A JP S55143814 A JPS55143814 A JP S55143814A JP 4928079 A JP4928079 A JP 4928079A JP 4928079 A JP4928079 A JP 4928079A JP S55143814 A JPS55143814 A JP S55143814A
Authority
JP
Japan
Prior art keywords
ratio
line
higher harmonic
vibration
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
JP4928079A
Other languages
Japanese (ja)
Other versions
JPS603245B2 (en
Inventor
Jiro Inoue
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.)
NOTO DENSHI KOGYO KK
Original Assignee
NOTO DENSHI KOGYO KK
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 NOTO DENSHI KOGYO KK filed Critical NOTO DENSHI KOGYO KK
Priority to JP54049280A priority Critical patent/JPS603245B2/en
Priority to US06/140,848 priority patent/US4348609A/en
Priority to DE3014865A priority patent/DE3014865C2/en
Publication of JPS55143814A publication Critical patent/JPS55143814A/en
Publication of JPS603245B2 publication Critical patent/JPS603245B2/en
Expired 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
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
    • 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
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02015—Characteristics of piezoelectric layers, e.g. cutting angles
    • 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
    • H03H9/02007—Details of bulk acoustic wave devices
    • H03H9/02157—Dimensional parameters, e.g. ratio between two dimension parameters, length, width or thickness

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To suppress effectively all higher harmonic by forming the piezoelectric plate of a piezoelectric vibrator into a rectangle and by setting the ratio of the long side to the short side to a specific value. CONSTITUTION:Piezoelectric plate 11 is formed into a rectangle, and the ratio of length (a) of the long side to length (b) of the short side is set to b/a 0.7-0.98. When line A, line B, line C, line D, and line E are shown as frequency 455KHz of fundamental vibration, tertiary higher harmonic 1.2MHz, fifth-degree higher harmonic 2.0MHz, outline vibration 650kHz, and bending vibration 300kHz respectively on the graph where side ratio b/a above is the horizontal axis and ratio dB of the antiresonance resistance to the resonance resistance is the vertical axis, almost all spurious vibration is suppressed effectively for side ratio b/a of approximately 0.7- 0.98. Consequently, all higher harmonic can be suppressed effectively by using the piezoelectric plzte having this side ratio.
JP54049280A 1979-04-20 1979-04-20 piezoelectric vibrator Expired JPS603245B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP54049280A JPS603245B2 (en) 1979-04-20 1979-04-20 piezoelectric vibrator
US06/140,848 US4348609A (en) 1979-04-20 1980-04-16 Piezoelectric vibrator with spurious mode suppression
DE3014865A DE3014865C2 (en) 1979-04-20 1980-04-17 Piezoelectric transducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54049280A JPS603245B2 (en) 1979-04-20 1979-04-20 piezoelectric vibrator

Publications (2)

Publication Number Publication Date
JPS55143814A true JPS55143814A (en) 1980-11-10
JPS603245B2 JPS603245B2 (en) 1985-01-26

Family

ID=12826446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54049280A Expired JPS603245B2 (en) 1979-04-20 1979-04-20 piezoelectric vibrator

Country Status (1)

Country Link
JP (1) JPS603245B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007282823A (en) * 2006-04-17 2007-11-01 Ne:Kk Aptitude test kit
US11128279B2 (en) * 2015-10-30 2021-09-21 Kyocera Corporation Acoustic wave resonator, acoustic wave filter, multiplexer, communication apparatus, and method designing acoustic wave resonator

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA=1965US *
THEJOURNAL OF THE AMERICA=1965US *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007282823A (en) * 2006-04-17 2007-11-01 Ne:Kk Aptitude test kit
US11128279B2 (en) * 2015-10-30 2021-09-21 Kyocera Corporation Acoustic wave resonator, acoustic wave filter, multiplexer, communication apparatus, and method designing acoustic wave resonator

Also Published As

Publication number Publication date
JPS603245B2 (en) 1985-01-26

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