Surface acoustic wave duplexer and portable communication device using the same
US6765456B2 · kind B2 · utility
11Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2001 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Dec 17, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/19
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A surface acoustic wave duplexer includes a piezoelectric substrate; a transmitting filter formed on the piezoelectric substrate; a receiving filter formed on the piezoelectric substrate; a transmitting (Tx) branching line formed on the piezoelectric substrate; and a receiving (Rx) branching line formed on the piezoelectric substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.