Wide band low loss acoustic wave device
US4114119A · kind A · utility
8Cited by
7References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1976 |
| Grant date | Sep 12, 1978 |
| Priority date | — |
| Expiry date | May 24, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02716
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustic wave device having substantially all of the surface wave energy produced at an input transducer coupled to the output utilization means. Plural reflecting means upon the surface of a piezoelectric substrate reflect surface waves produced by the input transducer in plural directions. The passband characteristics of the device are determined by the interaction of the transfer properties of each of the reflecters as well as those of the input and output transducers. Devices are described having extremely low insertion loss and wide bandwidth with low sidelobes and steep passband skirts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.