Power amplifier (PA) efficiency with low current DC to DC converter
US7091790B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2004 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Jul 20, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/191
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A novel method and apparatus is disclosed for reducing power dissipation of RF power amplifiers when a reduced output power level is required. The mechanism has the specific purpose of optimizing the collector terminal voltage on portions of the amplifier's RF chain for maintaining linearity while minimizing power consumption. The apparatus permits a smaller DC to DC converter to be used than in prior art, such that it is implemented in the same semiconductor die or module. Furthermore, the invention eliminates the amplification and phase continuity issues that arise from switched state power amplifiers and envelope-following approaches.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.