JPS5469363A - Ultrasonic wave transducer - Google Patents
Ultrasonic wave transducerInfo
- Publication number
- JPS5469363A JPS5469363A JP13687777A JP13687777A JPS5469363A JP S5469363 A JPS5469363 A JP S5469363A JP 13687777 A JP13687777 A JP 13687777A JP 13687777 A JP13687777 A JP 13687777A JP S5469363 A JPS5469363 A JP S5469363A
- Authority
- JP
- Japan
- Prior art keywords
- rhm
- waves
- electrodes
- reed screen
- screen electrodes
- 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
- H03H9/02637—Details concerning reflective or coupling arrays
-
- 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
- H03H9/02889—Means for compensation or elimination of undesirable effects of influence of mass loading
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
PURPOSE:to reduce spurious extremely, increase efficiency and stabilize the device by connecting the surface electrode formed according to reed screen electrodes with one of the reed screen electrodes. CONSTITUTION:A pair of reed screen electrodes 3 and 4 are set on one surface 2 of thin plate type piezo-electric material 1 interdigitally and surface electrode 6 is set on the other surface 5; electrodes 6 and 4 are connected and used as an electrode for earthing. Generally, rhm waves exist in regions A and B with small d (thickness of propagation) against requested frequency f and have different characteristics from Rayleigh's wave (surface elastic wave). The rhm waves are generated in the media with thin thickness less than 5lambda and there is region B where speed is changed sharply and region A with the constant speed. By using the characteristics of rhm waves, only rhm waves of zero objective mode are excited and transferred effectively and excitment and transfer of other modes are supressed, so that a transduser with extremely low spurious is available.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52136877A JPS5910610B2 (en) | 1977-11-15 | 1977-11-15 | ultrasonic transducer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52136877A JPS5910610B2 (en) | 1977-11-15 | 1977-11-15 | ultrasonic transducer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5469363A true JPS5469363A (en) | 1979-06-04 |
JPS5910610B2 JPS5910610B2 (en) | 1984-03-10 |
Family
ID=15185612
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52136877A Expired JPS5910610B2 (en) | 1977-11-15 | 1977-11-15 | ultrasonic transducer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5910610B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008516490A (en) * | 2004-10-11 | 2008-05-15 | エプコス アクチエンゲゼルシャフト | Element operating by acoustic wave and method of manufacturing the element |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513151A (en) * | 1974-06-26 | 1976-01-12 | Tokyo Shibaura Electric Co | DANSEI HYOMENHASOCHI |
-
1977
- 1977-11-15 JP JP52136877A patent/JPS5910610B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS513151A (en) * | 1974-06-26 | 1976-01-12 | Tokyo Shibaura Electric Co | DANSEI HYOMENHASOCHI |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008516490A (en) * | 2004-10-11 | 2008-05-15 | エプコス アクチエンゲゼルシャフト | Element operating by acoustic wave and method of manufacturing the element |
US8471652B2 (en) | 2004-10-11 | 2013-06-25 | Epcos Ag | Component that operates using acoustic waves and method for producing said component |
Also Published As
Publication number | Publication date |
---|---|
JPS5910610B2 (en) | 1984-03-10 |
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