Miniature delay line having low direct coupling
US4301431A · kind A · utility
0Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 25, 1980 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Mar 25, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/36
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a miniaturized delay line constituted by a single crystal through which an ultrasonic beam passes and by two electroacoustic transducers, the direct coupling between the input and the output of the delay line is attenuated by means of a molded shielding element of araldite loaded with silver. The molded element is placed around the output transducer as well as the lead which connects the transducer to one of the connector-pins of the base of the casing containing the delay line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.