Transmitter I/Q mismatch calibration for low if design systems
US7855666B1 · kind B1 · utility
1Cited by
11References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 2008 |
| Grant date | Dec 21, 2010 |
| Priority date | — |
| Expiry date | Nov 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/364
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A calibration module includes an absolute value module that generates first and second magnitude signals based on a first signal and a second signal, respectively. A first module generates an amplitude correction signal for a quadrature-amplitude modulated (QAM) signal based on the first and second magnitude signals. A second module generates a phase correction signal for the QAM signal based on the first signal and the second signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.