Asymmetric multilevel backoff amplifier with radio-frequency splitter
US9768732B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2016 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Nov 17, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/045
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A radio frequency (RF) amplification system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. The system may include a single digital-to-RF modulator and a power divider to drive multiple power amplifiers. A power combiner may also be provided to combine outputs of the power amplifiers. In at least one implementation, amplitude adjustment of the RF input signals of the one or more power amplifiers may be used to provide transmit power control and/or power backoff.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.