JPS5263046A - Ladder type piezo-electric filter - Google Patents
Ladder type piezo-electric filterInfo
- 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
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
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezo-electric 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
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.
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)
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 |
-
1975
- 1975-11-19 JP JP13804575A patent/JPS5263046A/en active Pending
Cited By (4)
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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