Duplex filtering
US6724278B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 2001 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Nov 13, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/52
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An arrangement for multi-standard duplex filtering for mobile terminals in a telecommunications system. The arrangement includes a substrate on which a first array of filter elements and a second array of filter elements are formed. The filter elements have different frequency bands in accordance with mobile telecommunications standards. The first array filters an incoming signal received from an antenna and provides an output at port in accordance with a matched frequency band of one of the standards. The second array filters a signal to be applied to port in accordance with a matched frequency band of one of the standards prior to transmission through antenna. The filter elements may comprise surface acoustic wave devices formed on a single substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.