Surface wave filter filtering delay transfer function
US5475348A · kind A · utility
36Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1994 |
| Grant date | Dec 12, 1995 |
| Priority date | — |
| Expiry date | Apr 18, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H9/02905
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
It consists of several channels (V1, V2) in parallel, which exhibit an inter-transducer gap difference (2.sub.1 -4.sub.1 ; 2.sub.2 -4.sub.2) equal to an even multiple of the half-wavelength (.lambda.) at the central frequency, from one channel to the next, so as to cancel the delay line transfer function which corresponds to the direct path between transducers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.