JPS57157614A - Piezoelectric resonator using width and length vibration and filter - Google Patents

Piezoelectric resonator using width and length vibration and filter

Info

Publication number
JPS57157614A
JPS57157614A JP4164281A JP4164281A JPS57157614A JP S57157614 A JPS57157614 A JP S57157614A JP 4164281 A JP4164281 A JP 4164281A JP 4164281 A JP4164281 A JP 4164281A JP S57157614 A JPS57157614 A JP S57157614A
Authority
JP
Japan
Prior art keywords
width
electrode
plate
nonpolarized
frequency
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
JP4164281A
Other languages
Japanese (ja)
Other versions
JPH0140529B2 (en
Inventor
Hiroshi Shimizu
Hiroshi Watanabe
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP4164281A priority Critical patent/JPS57157614A/en
Publication of JPS57157614A publication Critical patent/JPS57157614A/en
Publication of JPH0140529B2 publication Critical patent/JPH0140529B2/ja
Granted 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
    • 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
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
    • H03H9/132—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials characterized by a particular shape
    • 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

PURPOSE:To facilitate the lead-out of a lead electrode, by setting the driving electrode to both faces of the center polarized region of a piezoelectric porcelain plate having nonpolarized both ends in the length direction of the porcelain. CONSTITUTION:A strip type driving electrode 2 is set to both faces of the central polarized part of a piezoelectric porcelain plate 1 having nonpolarized both ends in the length direction of the plate 1. Thus the width 2H1 of the electrode 2 is reduced. The width/length vibration propagating a thin piezoelectric porcelain plate having a finite width shows the high range cutoff type decentralizing properties, and the energy can be enclosed by setting a higher curoff frequency at a region where a frequency rising type electrode, i.e., a driving electrode than its peripheral area. Furthermore the cutoff frequency of the width/length vibration increases by decreasing the ratio between the width of the electrode 2 and the width of the plate 1. And this cutoff frequency can be increased more than that of the nonpolarized mode.
JP4164281A 1981-03-24 1981-03-24 Piezoelectric resonator using width and length vibration and filter Granted JPS57157614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4164281A JPS57157614A (en) 1981-03-24 1981-03-24 Piezoelectric resonator using width and length vibration and filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4164281A JPS57157614A (en) 1981-03-24 1981-03-24 Piezoelectric resonator using width and length vibration and filter

Publications (2)

Publication Number Publication Date
JPS57157614A true JPS57157614A (en) 1982-09-29
JPH0140529B2 JPH0140529B2 (en) 1989-08-29

Family

ID=12613981

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4164281A Granted JPS57157614A (en) 1981-03-24 1981-03-24 Piezoelectric resonator using width and length vibration and filter

Country Status (1)

Country Link
JP (1) JPS57157614A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6058708A (en) * 1983-09-09 1985-04-04 Murata Mfg Co Ltd Piezoelectric element
US6002308A (en) * 1997-04-01 1999-12-14 Murata Manufacturing Co., Ltd. Piezoelectric filter with a capacitor on a substrate having an unpolarized portion

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6058708A (en) * 1983-09-09 1985-04-04 Murata Mfg Co Ltd Piezoelectric element
JPH0568129B2 (en) * 1983-09-09 1993-09-28 Murata Manufacturing Co
US6002308A (en) * 1997-04-01 1999-12-14 Murata Manufacturing Co., Ltd. Piezoelectric filter with a capacitor on a substrate having an unpolarized portion

Also Published As

Publication number Publication date
JPH0140529B2 (en) 1989-08-29

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