Dispersion compensated acoustic surface waveguides using diffused substrates
US4330768A · kind A · utility
6Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1980 |
| Grant date | May 18, 1982 |
| Priority date | — |
| Expiry date | Oct 2, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/6403
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustical wave (SAW) waveguide device which compensates for dispersion by utilizing diffused substrates. Various embodiments have in-diffused or out-diffused core regions in which the ray is channeled that are topped by a thin metallic film overlay. Partially surrounding each core region are cladding portions which are also selectively in-diffused or out-diffused and may be covered by the metal overlay. By varying the amounts of in-diffusion or out-diffusion for the particular application, the effects of dispersion are minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.