Unilateral surface wave transducer
US5264751A · kind A · utility
17Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1992 |
| Grant date | Nov 23, 1993 |
| Priority date | — |
| Expiry date | Sep 30, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/14505
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a transducer for surface waves, an alternating succession of transmitter cells and reflector cells is used. The transmitter cells transmit surface waves in phase opposition, leftwards and rightwards. The reflector cells have a reflection coefficient that is in phase opposition between the left-hand side and the right-hand side. The waves transmitted by the transmitter cells interfere with the waves reflected by the reflector cells, destructively in one direction and constructively in the other direction. This enables the making of transducers with spacings equal to .lambda./4 and .lambda./6 only.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.