JPS5417647A - Elastic surface wave element - Google Patents
Elastic surface wave elementInfo
- Publication number
- JPS5417647A JPS5417647A JP8200477A JP8200477A JPS5417647A JP S5417647 A JPS5417647 A JP S5417647A JP 8200477 A JP8200477 A JP 8200477A JP 8200477 A JP8200477 A JP 8200477A JP S5417647 A JPS5417647 A JP S5417647A
- Authority
- JP
- Japan
- Prior art keywords
- surface wave
- elastic surface
- wave element
- relation
- suppressing
- 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
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
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
-
- 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
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14544—Transducers of particular shape or position
- H03H9/14552—Transducers of particular shape or position comprising split fingers
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
PURPOSE:To eliminate the need of an impedance converter circuit for circuit connection, by suppressing a triple transit echo by fixing a relation between the width and interval of electrode fingers in relation to the wavelength of an elastic surface wave.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8200477A JPS5944802B2 (en) | 1977-07-11 | 1977-07-11 | surface acoustic wave device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8200477A JPS5944802B2 (en) | 1977-07-11 | 1977-07-11 | surface acoustic wave device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5417647A true JPS5417647A (en) | 1979-02-09 |
JPS5944802B2 JPS5944802B2 (en) | 1984-11-01 |
Family
ID=13762372
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8200477A Expired JPS5944802B2 (en) | 1977-07-11 | 1977-07-11 | surface acoustic wave device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5944802B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60201711A (en) * | 1984-03-27 | 1985-10-12 | Toshiba Corp | Surface acoustic wave device |
US4742319A (en) * | 1986-06-21 | 1988-05-03 | Alps Electric Co., Ltd. | Surface-acoustic-wave resonator |
US6075426A (en) * | 1998-05-14 | 2000-06-13 | Fujitsu Limited | Surface acoustic wave device with an angle α related to specific piezoelectric substrates |
EP1143612A1 (en) * | 1999-10-18 | 2001-10-10 | Kabushiki Kaisha Toshiba | Surface acoustic wave device |
US6469598B2 (en) * | 2001-03-12 | 2002-10-22 | Matsushita Electric Industrial Co., Ltd. | SAW filter with unidirectional transducer and communication apparatus using the same |
US6710683B2 (en) * | 2001-04-27 | 2004-03-23 | Matsushita Electric Industrial Co., Ltd. | Surface acoustic wave filter and communications apparatus using the same |
-
1977
- 1977-07-11 JP JP8200477A patent/JPS5944802B2/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60201711A (en) * | 1984-03-27 | 1985-10-12 | Toshiba Corp | Surface acoustic wave device |
US4742319A (en) * | 1986-06-21 | 1988-05-03 | Alps Electric Co., Ltd. | Surface-acoustic-wave resonator |
US6075426A (en) * | 1998-05-14 | 2000-06-13 | Fujitsu Limited | Surface acoustic wave device with an angle α related to specific piezoelectric substrates |
EP1143612A1 (en) * | 1999-10-18 | 2001-10-10 | Kabushiki Kaisha Toshiba | Surface acoustic wave device |
EP1143612A4 (en) * | 1999-10-18 | 2004-10-27 | Toshiba Kk | Surface acoustic wave device |
US6469598B2 (en) * | 2001-03-12 | 2002-10-22 | Matsushita Electric Industrial Co., Ltd. | SAW filter with unidirectional transducer and communication apparatus using the same |
US6710683B2 (en) * | 2001-04-27 | 2004-03-23 | Matsushita Electric Industrial Co., Ltd. | Surface acoustic wave filter and communications apparatus using the same |
Also Published As
Publication number | Publication date |
---|---|
JPS5944802B2 (en) | 1984-11-01 |
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