Method of and circuit for predistortion for a power amplifier
US9866269B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2016 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | Nov 17, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3233
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A digital predistortion (DPD) system includes an input configured to receive a DPD input signal. The DPD system includes a first predistortion circuit configured to provide a first signal path coupled to the input to generate a first predistortion signal. The first predistortion circuit includes a first infinite impulse response (IIR) filter. A second predistortion circuit is configured to provide a second signal path coupled to the input in parallel with the first signal path to generate a second predistortion signal. The second predistortion circuit includes a second IIR filter. A combiner circuit is configured to combine the first predistortion signal and the second predistortion signal to generate a DPD output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.