Transmitter I/Q mismatch calibration for low IF design systems
US7382297B1 · kind B1 · utility
17Cited by
3References
53Claims
0Family size
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Key dates
| Filing date | Aug 11, 2006 |
| Grant date | Jun 3, 2008 |
| Priority date | — |
| Expiry date | Aug 11, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/364
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A calibration module includes a first input that receives a reference signal, a second input that receives a crosstalk signal, and first and second absolute value modules that generate first and second magnitude signals based on the reference signal and the crosstalk 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 reference signal and the crosstalk signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.