Patent · US Active

Transmitter I/Q mismatch calibration for low if design systems

US7855666B1 · kind B1 · utility

1Cited by
11References
37Claims
0Family size

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Inventors

Key dates

Filing dateMay 20, 2008
Grant dateDec 21, 2010
Priority date
Expiry dateNov 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.