JPS57186818A - Surface acoustic wave dispersion type delay line - Google Patents
Surface acoustic wave dispersion type delay lineInfo
- Publication number
- JPS57186818A JPS57186818A JP7252081A JP7252081A JPS57186818A JP S57186818 A JPS57186818 A JP S57186818A JP 7252081 A JP7252081 A JP 7252081A JP 7252081 A JP7252081 A JP 7252081A JP S57186818 A JPS57186818 A JP S57186818A
- Authority
- JP
- Japan
- Prior art keywords
- reflection
- transducer
- reflected
- dispersion type
- right angles
- 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
- H03H9/30—Time-delay networks
- H03H9/42—Time-delay networks using surface acoustic waves
- H03H9/44—Frequency dependent delay lines, e.g. dispersive delay lines
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
PURPOSE:To obtain the satisfactory dispersion type delay characteristics, by using 4 reflection lattices for reflecting 2 reed screen type electrodes and a surface wave in the direction of right angles. CONSTITUTION:A surface wave radiated from an input transducer 22 is reflected in the direction of right angles by a reflection lattice 26, is further reflected in the direction of right angles by a reflection surface 27, and reaches an output transducer 23. Subsequently, when intervals of reflection elements constituting the reflection lattice are decreased gradually as they go away from the transducer 22, not only the frequency but also the delay time are increased. In the same way, the surface wave radiated from the transducer 22 is reflected in the direction of 180 deg. by reflected lattices 24, 25, and reaches the transducer 23, but in this case, on the contrary, intervals of reflection elements constituting the reflection lattice are increased gradually as they go away from the transducer 22, and the frequency is increased and the delay time is decreased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7252081A JPS57186818A (en) | 1981-05-14 | 1981-05-14 | Surface acoustic wave dispersion type delay line |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7252081A JPS57186818A (en) | 1981-05-14 | 1981-05-14 | Surface acoustic wave dispersion type delay line |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57186818A true JPS57186818A (en) | 1982-11-17 |
Family
ID=13491683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7252081A Pending JPS57186818A (en) | 1981-05-14 | 1981-05-14 | Surface acoustic wave dispersion type delay line |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57186818A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01153732U (en) * | 1988-04-18 | 1989-10-23 | ||
JPH02189015A (en) * | 1989-01-17 | 1990-07-25 | Clarion Co Ltd | Surface acoustic wave device |
-
1981
- 1981-05-14 JP JP7252081A patent/JPS57186818A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01153732U (en) * | 1988-04-18 | 1989-10-23 | ||
JPH02189015A (en) * | 1989-01-17 | 1990-07-25 | Clarion Co Ltd | Surface acoustic wave device |
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LENTINE | Analysis of non-periodic surface acoustic wave transducers and reflectors[M. S. Thesis] |