JPS55143814A - Piezoelectric vibrator - Google Patents
Piezoelectric vibratorInfo
- 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
Links
- 238000005452 bending Methods 0.000 abstract 1
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.
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)
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 |
-
1979
- 1979-04-20 JP JP54049280A patent/JPS603245B2/en not_active Expired
Non-Patent Citations (2)
Title |
---|
THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA=1965US * |
THEJOURNAL OF THE AMERICA=1965US * |
Cited By (2)
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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