Architecture of nonlinear RF filter-based transmitter
US9374044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2011 |
| Grant date | Jun 21, 2016 |
| Priority date | — |
| Expiry date | Feb 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/21157
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Systems and methods for compensating for a non-linear characteristic of a non-linear filter in a transmit chain of a transmitter using predistortion are disclosed. In one embodiment, a transmitter includes a power amplifier configured to amplify a radio frequency input signal to provide an amplified radio frequency signal, a non-linear filter configured to filter the amplified radio frequency signal to provide an output signal of the transmitter, and a predistorter configured effect predistortion of the amplified radio frequency signal, where the predistortion compensates for a non-linear characteristic of the non-linear filter. In this manner, the output signal is as if the non-linear filter were a linear, or substantially liner, filter. The predistortion applied by the predistorter may be fixed or adaptive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.