Systems and methods of RF power transmission, modulation, and amplification, including embodiments for amplifier class transitioning
US7423477B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 29, 2007 |
| Grant date | Sep 9, 2008 |
| Priority date | — |
| Expiry date | Jan 29, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3206
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and systems for vector combining power amplification are disclosed herein. In one embodiment, a plurality of signals are individually amplified, then summed to form a desired time-varying complex envelope signal. Phase and/or frequency characteristics of one or more of the signals are controlled to provide the desired phase, frequency, and/or amplitude characteristics of the desired time-varying complex envelope signal. In another embodiment, a time-varying complex envelope signal is decomposed into a plurality of constant envelope constituent signals. The constituent signals are amplified equally or substantially equally, and then summed to construct an amplified version of the original time-varying envelope signal. Embodiments also perform frequency up-conversion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.