RF power amplifier system with impedance modulation
US8018277B2 · kind B2 · utility
24Cited by
33References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2010 |
| Grant date | Sep 13, 2011 |
| Priority date | — |
| Expiry date | Aug 20, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3231
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifier controller circuit controls an adjustable impedance matching network at the output of a power amplifier to vary its load line to improve the efficiency of the RF PA. The PA controller circuit comprises an amplitude control loop that determines an amplitude correction signal. The amplitude loop is configured to control or correct for distortion from the adjustable matching network based upon the amplitude correction signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.