GB1466958A – Piezoelectric devices
– Google Patents
GB1466958A – Piezoelectric devices
– Google Patents
Piezoelectric devices
Info
Publication number
GB1466958A
GB1466958A
GB1736074A
GB1736074A
GB1466958A
GB 1466958 A
GB1466958 A
GB 1466958A
GB 1736074 A
GB1736074 A
GB 1736074A
GB 1736074 A
GB1736074 A
GB 1736074A
GB 1466958 A
GB1466958 A
GB 1466958A
Authority
GB
United Kingdom
Prior art keywords
piezoelectric
poisson
april
thickness
ratio
Prior art date
1973-04-19
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.)
Expired
Application number
GB1736074A
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.)
1973-04-19
Filing date
1974-04-19
Publication date
1977-03-16
1974-04-19
Application filed by Matsushita Electric Industrial Co Ltd
filed
Critical
Matsushita Electric Industrial Co Ltd
1977-03-16
Publication of GB1466958A
publication
Critical
patent/GB1466958A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
239000000463
material
Substances
0.000
abstract
2
239000000654
additive
Substances
0.000
abstract
1
239000000919
ceramic
Substances
0.000
abstract
1
NKZSPGSOXYXWQA-UHFFFAOYSA-N
dioxido(oxo)titanium;lead(2+)
Chemical compound
[Pb+2].[O-][Ti]([O-])=O
NKZSPGSOXYXWQA-UHFFFAOYSA-N
0.000
abstract
1
230000014509
gene expression
Effects
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
H03H9/177—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator of the energy-trap type
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
H03H9/02062—Details relating to the vibration mode
H03H9/0207—Details relating to the vibration mode the vibration mode being harmonic
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
H03H9/46—Filters
H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
H03H9/56—Monolithic crystal filters
H03H9/562—Monolithic crystal filters comprising a ceramic piezoelectric layer
Abstract
1466958 Piezoelectric resonators MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 19 April 1974 [19 April 1973] 17360/74 Heading H1E A piezoelectric resonator using the energytrapping principle comprises a plate 10 of piezoelectric material having a restricted (resonant) area defined by electrodes 13, 14, 15 this area being thinner or thicker than the rest of the plate according to whether one of the following expressions is negative or positive, viz. for the thickness-extensional mode, and for the thickness-shear mode, where p and q are the members of the odd harmonic overtones and k=[2(1 – #)/(1 – 2#)]¢ where # is Poisson’s ratio. Preferably a material having a Poisson’s ratio less than one third is chosen, e.g. lead titanate ceramic with suitable additives.
GB1736074A
1973-04-19
1974-04-19
Piezoelectric devices
Expired
GB1466958A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US35264673A
1973-04-19
1973-04-19
Publications (1)
Publication Number
Publication Date
GB1466958A
true
GB1466958A
(en)
1977-03-16
Family
ID=23385928
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1736074A
Expired
GB1466958A
(en)
1973-04-19
1974-04-19
Piezoelectric devices
Country Status (6)
Country
Link
CA
(1)
CA1001752A
(en)
DE
(1)
DE2416085C3
(en)
FR
(1)
FR2226782B1
(en)
GB
(1)
GB1466958A
(en)
IT
(1)
IT1005988B
(en)
NL
(1)
NL7405281A
(en)
Family Cites Families (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US2249933A
(en)
*
1938-09-24
1941-07-22
Telefunken Gmbh
Piezoelectric plate
US3363119A
(en)
*
1965-04-19
1968-01-09
Clevite Corp
Piezoelectric resonator and method of making same
US3384768A
(en)
*
1967-09-29
1968-05-21
Clevite Corp
Piezoelectric resonator
US3576453A
(en)
*
1969-05-02
1971-04-27
Bell Telephone Labor Inc
Monolithic electric wave filters
1974
1974-04-01
DE
DE2416085A
patent/DE2416085C3/en
not_active
Expired
1974-04-09
CA
CA197,191A
patent/CA1001752A/en
not_active
Expired
1974-04-18
FR
FR7413583A
patent/FR2226782B1/fr
not_active
Expired
1974-04-18
NL
NL7405281A
patent/NL7405281A/xx
not_active
Application Discontinuation
1974-04-18
IT
IT50457/74A
patent/IT1005988B/en
active
1974-04-19
GB
GB1736074A
patent/GB1466958A/en
not_active
Expired
Also Published As
Publication number
Publication date
DE2416085A1
(en)
1974-10-31
DE2416085C3
(en)
1981-11-05
DE2416085B2
(en)
1980-10-23
FR2226782B1
(en)
1978-06-16
FR2226782A1
(en)
1974-11-15
CA1001752A
(en)
1976-12-14
NL7405281A
(en)
1974-10-22
IT1005988B
(en)
1976-09-30
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Legal Events
Date
Code
Title
Description
1977-07-27
PS
Patent sealed
1994-05-18
PE20
Patent expired after termination of 20 years
Effective date:
19940418
