Fast envelope system calibration
US8611402B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 1, 2012 |
| Grant date | Dec 17, 2013 |
| Priority date | — |
| Expiry date | Apr 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2201/3233
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed is a transceiver for an envelope following system that includes a power amplifier (PA) having a signal input, a signal output, and a power input that receives power from a power management system that modulates a supply voltage provided to the PA in response to an envelope signal. The transceiver includes a calibration subsystem that is adapted to provide a first test signal to the signal input of the PA and to provide a second test signal to the power management system in place of the envelope signal. The calibration subsystem is programmed with calibration methods that sweep the first test signal through a first range and to sweep the second test signal through a second range in order to derive values that make up a pseudo-envelope look-up table (LUT) that is usable by the transceiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.