Integrated power amplifiers for use in wireless communication devices
US7961048B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 20, 2009 |
| Grant date | Jun 14, 2011 |
| Priority date | — |
| Expiry date | Nov 20, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/604
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An integrated power amplifier can include a carrier amplifier, where the carrier amplifier is connected to a first quarter wave transformer at the input of the carrier amplifier. In addition, the power amplifier can further include at least one peaking amplifier connected in parallel with the carrier amplifier; a first differential combining structure, where the first combining structure includes a first plurality of quarter wave transformers that are configured to combine respective first differential outputs of the carrier amplifier in phase to generate a first single-ended output signal, and a second differential combining structure, where the second combining structures includes a second plurality of quarter wave transformers that are configured to combine respective second differential outputs of the at least one peaking amplifier in phase to generate a second single-ended output signal, where the first single-ended output signal and the second single-ended output signal are combinable in-phase to provide an overall output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.