JPS5549016A - Elastic surface-wave propagation element - Google Patents
Elastic surface-wave propagation elementInfo
- Publication number
- JPS5549016A JPS5549016A JP12153378A JP12153378A JPS5549016A JP S5549016 A JPS5549016 A JP S5549016A JP 12153378 A JP12153378 A JP 12153378A JP 12153378 A JP12153378 A JP 12153378A JP S5549016 A JPS5549016 A JP S5549016A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- wave propagation
- elastic surface
- confront
- electrode fingers
- 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
- H03H3/00—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators
- H03H3/007—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks
- H03H3/08—Apparatus or processes specially adapted for the manufacture of impedance networks, resonating circuits, resonators for the manufacture of electromechanical resonators or networks for the manufacture of resonators or networks using surface acoustic waves
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
PURPOSE:To make it possible to improve the yield of an element manufacturing process and mass-producibility, by partially covewring a part between electrode fingers in regions, which do not confront each other in an elastic surface-wave propagation direction, with a metal coating. CONSTITUTION:A thin-film elastic surface-wave propagation element is provided additionally with metal film 14 (indicated by slanting dotted lines) and electrode fingers of reed screen type electrodes 11, 11 opposing mutually are formed without an electrode finger clearance in regions which do not confront. Opposiing electrodes 15 and 16 of reed screen type electrodes 11 and 12 are shown by 15 and 16. Adding thin film 14 like this excit an elastic wave there, but since its wavelength differ remarkably from that excited where electrode fingers of electrodes 11 confront mutually in an elastic surface-wave propagation direction, a bad influence is exerted direct to element characteristics. Namely, there is no need to form and position accurately opposite electrodes, so that its yield and mass producibility can remarkably be improved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12153378A JPS5549016A (en) | 1978-10-04 | 1978-10-04 | Elastic surface-wave propagation element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12153378A JPS5549016A (en) | 1978-10-04 | 1978-10-04 | Elastic surface-wave propagation element |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5549016A true JPS5549016A (en) | 1980-04-08 |
Family
ID=14813584
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12153378A Pending JPS5549016A (en) | 1978-10-04 | 1978-10-04 | Elastic surface-wave propagation element |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5549016A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4363990A (en) * | 1979-12-13 | 1982-12-14 | Matsushita Electric Industrial Co., Ltd. | Surface acoustic wave transducer |
JPS61261218A (en) * | 1985-05-10 | 1986-11-19 | バスフ アクチェン ゲゼルシャフト | Manufacture of cobalt-containing ferrimagnetic needle-like crystal iron oxide |
JPS63170222A (en) * | 1986-12-30 | 1988-07-14 | Showa Denko Kk | Production of lepidocrocite |
JPH04114225U (en) * | 1991-03-26 | 1992-10-07 | ミツミ電機株式会社 | surface acoustic wave device |
-
1978
- 1978-10-04 JP JP12153378A patent/JPS5549016A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4363990A (en) * | 1979-12-13 | 1982-12-14 | Matsushita Electric Industrial Co., Ltd. | Surface acoustic wave transducer |
JPS61261218A (en) * | 1985-05-10 | 1986-11-19 | バスフ アクチェン ゲゼルシャフト | Manufacture of cobalt-containing ferrimagnetic needle-like crystal iron oxide |
JPS63170222A (en) * | 1986-12-30 | 1988-07-14 | Showa Denko Kk | Production of lepidocrocite |
JPH0369848B2 (en) * | 1986-12-30 | 1991-11-05 | Showa Denko Kk | |
JPH04114225U (en) * | 1991-03-26 | 1992-10-07 | ミツミ電機株式会社 | surface acoustic wave device |
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