JPS56123121A - Elastic surface wave device - Google Patents
Elastic surface wave deviceInfo
- Publication number
- JPS56123121A JPS56123121A JP2672880A JP2672880A JPS56123121A JP S56123121 A JPS56123121 A JP S56123121A JP 2672880 A JP2672880 A JP 2672880A JP 2672880 A JP2672880 A JP 2672880A JP S56123121 A JPS56123121 A JP S56123121A
- Authority
- JP
- Japan
- Prior art keywords
- electrodes
- lambda
- comb
- grounded
- elastic surface
- 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
- H03H9/02—Details
- H03H9/02228—Guided bulk acoustic wave devices or Lamb wave devices having interdigital transducers situated in parallel planes on either side of a piezoelectric layer
-
- 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
- H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
- H03H9/14508—Polyphase SAW transducers
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
PURPOSE:To obtain a unidirectional low-loss elastic surface device by providing electrodes, shifting in wavelength by a quarter, on both the surfaces of a thin film made of a piezoelectric material by turns. CONSTITUTION:On the reverse surface of piezoelectric-material thin layer 2 adhered onto substrate 3, comb-shaped electrodes 1 arrayed in parallel at intervals lambda/4 are provided; every other electrode 1 is grounded in common and the others are applied with a 0-phase signal. On the top surface of thin layer 2, comb-shaped electrodes 1 shifting in center distance by lambda/4 from electrodes 1 on the reverse surface are provided; every other electrode 1 is grounded in common, and the others are applied with a signal lagging in phase by 90 degrees. Thus, the unidirectional low-loss device can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2672880A JPS56123121A (en) | 1980-03-05 | 1980-03-05 | Elastic surface wave device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2672880A JPS56123121A (en) | 1980-03-05 | 1980-03-05 | Elastic surface wave device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS56123121A true JPS56123121A (en) | 1981-09-28 |
Family
ID=12201374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2672880A Pending JPS56123121A (en) | 1980-03-05 | 1980-03-05 | Elastic surface wave device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56123121A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5738017A (en) * | 1980-08-18 | 1982-03-02 | Fujitsu General Ltd | Unidirectional saw energizing device |
JPS57155820A (en) * | 1981-03-20 | 1982-09-27 | Fujitsu General Ltd | Unidirectional saw exciter |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54129896A (en) * | 1977-03-26 | 1979-10-08 | Kimio Shibayama | Piezooelectric thin film blind electrode elastic surface wave converter |
-
1980
- 1980-03-05 JP JP2672880A patent/JPS56123121A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54129896A (en) * | 1977-03-26 | 1979-10-08 | Kimio Shibayama | Piezooelectric thin film blind electrode elastic surface wave converter |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5738017A (en) * | 1980-08-18 | 1982-03-02 | Fujitsu General Ltd | Unidirectional saw energizing device |
JPS57155820A (en) * | 1981-03-20 | 1982-09-27 | Fujitsu General Ltd | Unidirectional saw exciter |
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