Constant-gain power amplifier
US8461928B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 2011 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Jan 25, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/007
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method includes amplifying a non-constant-envelope input signal using a main amplifier having a first gain that varies depending on a supply voltage of the main amplifier. A constant-envelope signal is amplified using a reference amplifier having a second gain that varies depending on the supply voltage of the reference amplifier. Both the main amplifier and the reference amplifier are operated using a same variable supply voltage whose amplitude varies over time. A gain control signal is produced so as to compensate for changes in the second gain of the reference amplifier that are caused by the variable supply voltage. The gain control signal is applied in compensating for variations in the first gain of the main amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.