Doherty amplifier with drain bias supply modulation
US7619468B1 · kind B1 · utility
22Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2008 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Sep 30, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/321
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An enhanced Doherty-configured amplifier that features separate and independent bias voltage sources for the main and auxiliary amplifiers. The bias voltage sources may be controllable and variable to alter the performance of the amplifier according to the input signal or system requirements. The enhanced amplifier includes a signal preparation unit to divide and shape the input signal in order to compensate for non-linearities in the combined output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.