Apparatus and method for calibration of gain and/or phase imbalance and/or DC offset in a communication system
US7965988B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2009 |
| Grant date | Jun 21, 2011 |
| Priority date | — |
| Expiry date | Oct 7, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/08
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An example of a method for off-line calibration of a radio frequency (RF) communication system may include one or more of the following: enabling an off-line calibration mode for an RF communication system; generating an off-line calibration signal; applying to a frequency converter a first off-line calibration signal corresponding to the generated off-line calibration signal; translating the first off-line calibration signal into a second off-line calibration signal; evaluating one or more calibration adjustment signals associated with the calibration signal to reduce error in the communication system, wherein the one or more calibration adjustment signals may include an offset parameter associated with DC offset and an imbalance parameter associated with at least one of gain and phase imbalances; storing one or more calibration adjustment signals; disabling the off-line calibration mode; applying a communication signal; and adjusting the communication signal based on the stored one or more calibration adjustment signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.