Apparatus and methods for envelope tracking systems with automatic mode selection
US10110169B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2017 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Sep 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/555
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Apparatus and methods for envelope tracking systems with automatic mode selection are provided herein. In certain configurations, a power amplifier system includes a power amplifier that amplifies a radio frequency signal and that receives power from a power amplifier supply voltage. The power amplifier system further includes an envelope tracker that generates the power amplifier supply voltage based on an envelope signal corresponding to an envelope of the radio frequency signal. The envelope tracker includes a signal bandwidth detection circuit that processes the envelope signal to generate a detected bandwidth signal, and a mode control circuit that controls a mode of the error amplifier based on the detected signal bandwidth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.