Digitally tuned, integrated RF filters with enhanced linearity for multi-band radio applications
US7649407B2 · kind B2 · utility
6Cited by
17References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2007 |
| Grant date | Jan 19, 2010 |
| Priority date | — |
| Expiry date | Nov 29, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2250/00
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An integrated, multi-band radio frequency (RF) filter is capable of modifying a filter response thereof in response to control information. Switching elements within the filter can be changed between on and off conditions to modify the filter response. In one implementation, the integrated, multi-band filter is integrated on a front end module chip to be used within a multi-radio wireless device. In at least one embodiment, linearity enhancement circuitry is provided within a multi-band filter to improve linearity and reduce insertion loss.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.