System and method of carrier reinjection in a feedforward amplifier
US7173484B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2003 |
| Grant date | Feb 6, 2007 |
| Priority date | — |
| Expiry date | Dec 18, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0441
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A dual loop feedforward power amplifier. A dual loop feedforward power amplifier, comprising an input that provides a multicarrier signal; a first feedforward power amplifier; and a second feedforward power amplifier, wherein the first feedforward power amplifier serves as a main amplifier gain block in the second feedforward power amplifier, wherein the first feedforward power amplifier comprises a carrier cancellation loop and a first error amplifier loop, and wherein the second feedforward power amplifier comprises a third loop and a fourth loop that cancel small signal distortions that are not reduced by the first feedforward amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.