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JPS5263046A - Ladder type piezo-electric filter - Google Patents

Ladder type piezo-electric filter

Info

Publication number
JPS5263046A
JPS5263046A JP13804575A JP13804575A JPS5263046A JP S5263046 A JPS5263046 A JP S5263046A JP 13804575 A JP13804575 A JP 13804575A JP 13804575 A JP13804575 A JP 13804575A JP S5263046 A JPS5263046 A JP S5263046A
Authority
JP
Japan
Prior art keywords
ladder type
electric filter
type piezo
piezo
series
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
JP13804575A
Other languages
Japanese (ja)
Inventor
Hiroki Honda
Hirohiko Izumi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13804575A priority Critical patent/JPS5263046A/en
Publication of JPS5263046A publication Critical patent/JPS5263046A/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 elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58—Multiple crystal filters
    • H03H9/60—Electric coupling means therefor
    • H03H9/605—Electric coupling means therefor consisting of a ladder configuration

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 facilitate fabrication and improve accuracy by making the plane sizes of piezoelectric resonators in series and parallel connection identical and providing a means satisfying the formula.
JP13804575A 1975-11-19 1975-11-19 Ladder type piezo-electric filter Pending JPS5263046A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13804575A JPS5263046A (en) 1975-11-19 1975-11-19 Ladder type piezo-electric filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13804575A JPS5263046A (en) 1975-11-19 1975-11-19 Ladder type piezo-electric filter

Publications (1)

Publication Number Publication Date
JPS5263046A true JPS5263046A (en) 1977-05-25

Family

ID=15212709

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13804575A Pending JPS5263046A (en) 1975-11-19 1975-11-19 Ladder type piezo-electric filter

Country Status (1)

Country Link
JP (1) JPS5263046A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03285415A (en) * 1990-03-30 1991-12-16 Ngk Spark Plug Co Ltd Ladder-shaped filter
US5077544A (en) * 1988-06-13 1991-12-31 Ngk Spark Plug Co., Ltd. Ladder-type piezoelectric filter having higher input and output Qm values
US6366182B1 (en) * 1998-06-26 2002-04-02 Murata Manufacturing Co., Ltd. Ladder-type piezoelectric filter having a substantially square resonator with the four corners cut

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5077544A (en) * 1988-06-13 1991-12-31 Ngk Spark Plug Co., Ltd. Ladder-type piezoelectric filter having higher input and output Qm values
JPH03285415A (en) * 1990-03-30 1991-12-16 Ngk Spark Plug Co Ltd Ladder-shaped filter
US6366182B1 (en) * 1998-06-26 2002-04-02 Murata Manufacturing Co., Ltd. Ladder-type piezoelectric filter having a substantially square resonator with the four corners cut
US6580340B2 (en) * 1998-06-26 2003-06-17 Murata Manufacturing Co., Ltd. Ladder-type piezoelectric filter using resonators with nodal cuts and made from materials with equal frequency constants

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