Technique for mass production of coded surface acoustic wave devices
US5133990A · kind A · utility
1Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1990 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Apr 5, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24802
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A technique of providing numerous distinct conductive patterns on a piezoelectric substrate is accomplished using only two masking apparatus. One masking apparatus defines a common portion or structure for each of the patterns. The second masking apparatus defines numerous distinct patterns, each corresponding to a different alignment position with respect to the common structure already formed on the substrate. One application for this technique is in economic production of coded SAW devices which may serve as coding or decoding devices, filters, or correlators, each of the SAW devices having a different individual code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.