Amplifier linearization using non-standard feedback
US9024690B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2011 |
| Grant date | May 5, 2015 |
| Priority date | — |
| Expiry date | Jul 11, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/462
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplification unit is provided. The amplification unit, comprises a first amplifier, a second amplifier, a first sensor, a first predistortion component, and a signal combiner. The first amplifier amplifies a first signal to produce a second signal. The first sensor produces a third signal based on the second signal. The second amplifier turns on and to amplifies a fourth signal to produce a fifth signal when the amplitude of the fourth signal exceeds a threshold amplitude and turns off when the amplitude of the fourth signal is less than the threshold amplitude. The first predistortion component produces the first signal based on a first input signal, based on the third signal, and based on an on-off state of the second amplifier. The signal combiner produces an output of the amplification unit based on the second signal and the fifth signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.