Offset-frequency loop-back calibration
US7657232B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2006 |
| Grant date | Feb 2, 2010 |
| Priority date | — |
| Expiry date | Jul 22, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0433
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Embodiments of methods and means for calibrating a linearization characteristic within an RF transceiver system are provided. Such embodiments generally include extracting a portion of an output signal and frequency shifting or translating that signal by a predetermined value. The frequency shifted signal is then summed or otherwise introduced into a receiver signal pathway where it is analyzed by digital signal processing or other means to determine if linearization distortion is present. Linearization calibration of a power amplifier, a low-noise amplifier and/or other functionality within the system can then be performed in an automatic, reliable and ongoing manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.